Harrisburg weather by month

Check out Harrisburg weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature in Harrisburg (°F)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
36°F maximum daytime temperature in January in Harrisburg36
39°F maximum daytime temperature in February in Harrisburg39
50°F maximum daytime temperature in March in Harrisburg50
63°F maximum daytime temperature in April in Harrisburg63
72°F maximum daytime temperature in May in Harrisburg72
81°F maximum daytime temperature in June in Harrisburg81
86°F maximum daytime temperature in July in Harrisburg86
84°F maximum daytime temperature in August in Harrisburg84
75°F maximum daytime temperature in September in Harrisburg75
64°F maximum daytime temperature in October in Harrisburg64
52°F maximum daytime temperature in November in Harrisburg52
41°F maximum daytime temperature in December in Harrisburg41
Min temperature (night-time)
19°F minimum night-time temperature in January in Harrisburg19
23°F minimum night-time temperature in February in Harrisburg23
30°F minimum night-time temperature in March in Harrisburg30
39°F minimum night-time temperature in April in Harrisburg39
50°F minimum night-time temperature in May in Harrisburg50
59°F minimum night-time temperature in June in Harrisburg59
64°F minimum night-time temperature in July in Harrisburg64
63°F minimum night-time temperature in August in Harrisburg63
55°F minimum night-time temperature in September in Harrisburg55
43°F minimum night-time temperature in October in Harrisburg43
36°F minimum night-time temperature in November in Harrisburg36
25°F minimum night-time temperature in December in Harrisburg25
Heat & Humidity
No heat & humidity in January in Harrisburg0
No heat & humidity in February in Harrisburg0
No heat & humidity in March in Harrisburg0
No heat & humidity in April in Harrisburg0
No heat & humidity in May in Harrisburg0
Low heat & humidity in June in HarrisburgL
High heat & humidity in July in HarrisburgH
Moderate heat & humidity in August in HarrisburgM
No heat & humidity in September in Harrisburg0
No heat & humidity in October in Harrisburg0
No heat & humidity in November in Harrisburg0
No heat & humidity in December in Harrisburg0

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & Daylight in Harrisburg

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
10 hours of daylight per day in January in Harrisburg10
11 hours of daylight per day in February in Harrisburg11
12 hours of daylight per day in March in Harrisburg12
13 hours of daylight per day in April in Harrisburg13
14 hours of daylight per day in May in Harrisburg14
15 hours of daylight per day in June in Harrisburg15
15 hours of daylight per day in July in Harrisburg15
14 hours of daylight per day in August in Harrisburg14
12 hours of daylight per day in September in Harrisburg12
11 hours of daylight per day in October in Harrisburg11
10 hours of daylight per day in November in Harrisburg10
9 hours of daylight per day in December in Harrisburg9
UV Index (Maximum)
UV (maximum) index 2 (Low) in January in Harrisburg2
UV (maximum) index 3 (Moderate) in February in Harrisburg3
UV (maximum) index 4 (Moderate) in March in Harrisburg4
UV (maximum) index 6 (High) in April in Harrisburg6
UV (maximum) index 8 (Very High) in May in Harrisburg8
UV (maximum) index 9 (Very High) in June in Harrisburg9
UV (maximum) index 9 (Very High) in July in Harrisburg9
UV (maximum) index 8 (Very High) in August in Harrisburg8
UV (maximum) index 6 (High) in September in Harrisburg6
UV (maximum) index 4 (Moderate) in October in Harrisburg4
UV (maximum) index 2 (Low) in November in Harrisburg2
UV (maximum) index 2 (Low) in December in Harrisburg2

Rainfall in Harrisburg

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
11 days with some rainfall in January in Harrisburg11
10 days with some rainfall in February in Harrisburg10
11 days with some rainfall in March in Harrisburg11
12 days with some rainfall in April in Harrisburg12
12 days with some rainfall in May in Harrisburg12
11 days with some rainfall in June in Harrisburg11
11 days with some rainfall in July in Harrisburg11
10 days with some rainfall in August in Harrisburg10
9 days with some rainfall in September in Harrisburg9
9 days with some rainfall in October in Harrisburg9
11 days with some rainfall in November in Harrisburg11
11 days with some rainfall in December in Harrisburg11
Average monthly rainfall (inches)
2.8 inches monthly rainfall in January in Harrisburg2.8
2.9 inches monthly rainfall in February in Harrisburg2.9
3.5 inches monthly rainfall in March in Harrisburg3.5
3.3 inches monthly rainfall in April in Harrisburg3.3
4.1 inches monthly rainfall in May in Harrisburg4.1
3.8 inches monthly rainfall in June in Harrisburg3.8
3.5 inches monthly rainfall in July in Harrisburg3.5
3.3 inches monthly rainfall in August in Harrisburg3.3
3.5 inches monthly rainfall in September in Harrisburg3.5
2.8 inches monthly rainfall in October in Harrisburg2.8
3.5 inches monthly rainfall in November in Harrisburg3.5
3.3 inches monthly rainfall in December in Harrisburg3.3

More about Harrisburg

Harrisburg by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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The climate guide for Pennsylvania (Harrisburg) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in Harrisburg?

Harrisburg has a cold climate with hot summers and some rainfall in all months.

Harrisburg weather in January

Expect daytime maximum temperatures of 36°F in Harrisburg, Pennsylvania in January based on long-term weather averages. There are 5 hours of sunshine per day on average with 11 days with some rainfall and typically 2.8 inches of rainfall in the month, which might fall as snow.

  • 36°F maximum daytime temperature in January in Harrisburg36
    36°F max day temperature
  • 5 hours of sunshine per day
  • 11 days with some rainfall in January in Harrisburg11
    11 days with some rainfall
  • 19°F minimum night-time temperature in January in Harrisburg19
    19°F min night temperature
  • 10 hours of daylight per day in January in Harrisburg10
    10 hours of daylight per day
  • No heat & humidity in January in Harrisburg0
    No heat & humidity
  • 2.8 inches monthly rainfall in January in Harrisburg2.8
    2.8 inches of monthly rainfall
  • UV (maximum) index 2 (Low) in January in Harrisburg2
    2 (Low) UV index

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Harrisburg weather in February

Expect daytime maximum temperatures of 39°F in Harrisburg, Pennsylvania in February based on long-term weather averages. There are 6 hours of sunshine per day on average with 10 days with some rainfall and typically 2.9 inches of rainfall in the month, which might fall as snow.

  • 39°F maximum daytime temperature in February in Harrisburg39
    39°F max day temperature
  • 6 hours of sunshine per day
  • 10 days with some rainfall in February in Harrisburg10
    10 days with some rainfall
  • 23°F minimum night-time temperature in February in Harrisburg23
    23°F min night temperature
  • 11 hours of daylight per day in February in Harrisburg11
    11 hours of daylight per day
  • No heat & humidity in February in Harrisburg0
    No heat & humidity
  • 2.9 inches monthly rainfall in February in Harrisburg2.9
    2.9 inches of monthly rainfall
  • UV (maximum) index 3 (Moderate) in February in Harrisburg3
    3 (Moderate) UV index

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Harrisburg weather in March

Expect daytime maximum temperatures of 50°F in Harrisburg, Pennsylvania in March based on long-term weather averages. There are 7 hours of sunshine per day on average with 11 days with some rainfall and typically 3.5 inches of rainfall in the month.

  • 50°F maximum daytime temperature in March in Harrisburg50
    50°F max day temperature
  • 7 hours of sunshine per day
  • 11 days with some rainfall in March in Harrisburg11
    11 days with some rainfall
  • 30°F minimum night-time temperature in March in Harrisburg30
    30°F min night temperature
  • 12 hours of daylight per day in March in Harrisburg12
    12 hours of daylight per day
  • No heat & humidity in March in Harrisburg0
    No heat & humidity
  • 3.5 inches monthly rainfall in March in Harrisburg3.5
    3.5 inches of monthly rainfall
  • UV (maximum) index 4 (Moderate) in March in Harrisburg4
    4 (Moderate) UV index

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Harrisburg weather in April

Expect daytime maximum temperatures of 63°F in Harrisburg, Pennsylvania in April based on long-term weather averages. There are 8 hours of sunshine per day on average with 12 days with some rainfall and typically 3.3 inches of rainfall in the month.

  • 63°F maximum daytime temperature in April in Harrisburg63
    63°F max day temperature
  • 8 hours of sunshine per day
  • 12 days with some rainfall in April in Harrisburg12
    12 days with some rainfall
  • 39°F minimum night-time temperature in April in Harrisburg39
    39°F min night temperature
  • 13 hours of daylight per day in April in Harrisburg13
    13 hours of daylight per day
  • No heat & humidity in April in Harrisburg0
    No heat & humidity
  • 3.3 inches monthly rainfall in April in Harrisburg3.3
    3.3 inches of monthly rainfall
  • UV (maximum) index 6 (High) in April in Harrisburg6
    6 (High) UV index

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Harrisburg weather in May

Expect daytime maximum temperatures of 72°F in Harrisburg, Pennsylvania in May based on long-term weather averages. There are 9 hours of sunshine per day on average with 12 days with some rainfall and typically 4.1 inches of rainfall in the month.

  • 72°F maximum daytime temperature in May in Harrisburg72
    72°F max day temperature
  • 9 hours of sunshine per day
  • 12 days with some rainfall in May in Harrisburg12
    12 days with some rainfall
  • 50°F minimum night-time temperature in May in Harrisburg50
    50°F min night temperature
  • 14 hours of daylight per day in May in Harrisburg14
    14 hours of daylight per day
  • No heat & humidity in May in Harrisburg0
    No heat & humidity
  • 4.1 inches monthly rainfall in May in Harrisburg4.1
    4.1 inches of monthly rainfall
  • UV (maximum) index 8 (Very High) in May in Harrisburg8
    8 (Very High) UV index

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Harrisburg weather in June

Expect daytime maximum temperatures of 81°F in Harrisburg, Pennsylvania in June based on long-term weather averages. There are 10 hours of sunshine per day on average with 11 days with some rainfall and typically 3.8 inches of rainfall in the month.

  • 81°F maximum daytime temperature in June in Harrisburg81
    81°F max day temperature
  • 10 hours of sunshine per day
  • 11 days with some rainfall in June in Harrisburg11
    11 days with some rainfall
  • 59°F minimum night-time temperature in June in Harrisburg59
    59°F min night temperature
  • 15 hours of daylight per day in June in Harrisburg15
    15 hours of daylight per day
  • Low heat & humidity in June in HarrisburgL
    Low heat & humidity
  • 3.8 inches monthly rainfall in June in Harrisburg3.8
    3.8 inches of monthly rainfall
  • UV (maximum) index 9 (Very High) in June in Harrisburg9
    9 (Very High) UV index

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Harrisburg weather in July

Expect daytime maximum temperatures of 86°F in Harrisburg, Pennsylvania in July and high heat and humidity based on long-term weather averages. There are 10 hours of sunshine per day on average with 11 days with some rainfall and typically 3.5 inches of rainfall in the month.

  • 86°F maximum daytime temperature in July in Harrisburg86
    86°F max day temperature
  • 10 hours of sunshine per day
  • 11 days with some rainfall in July in Harrisburg11
    11 days with some rainfall
  • 64°F minimum night-time temperature in July in Harrisburg64
    64°F min night temperature
  • 15 hours of daylight per day in July in Harrisburg15
    15 hours of daylight per day
  • High heat & humidity in July in HarrisburgH
    High heat & humidity
  • 3.5 inches monthly rainfall in July in Harrisburg3.5
    3.5 inches of monthly rainfall
  • UV (maximum) index 9 (Very High) in July in Harrisburg9
    9 (Very High) UV index

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Harrisburg weather in August

Expect daytime maximum temperatures of 84°F in Harrisburg, Pennsylvania in August based on long-term weather averages. There are 9 hours of sunshine per day on average with 10 days with some rainfall and typically 3.3 inches of rainfall in the month.

  • 84°F maximum daytime temperature in August in Harrisburg84
    84°F max day temperature
  • 9 hours of sunshine per day
  • 10 days with some rainfall in August in Harrisburg10
    10 days with some rainfall
  • 63°F minimum night-time temperature in August in Harrisburg63
    63°F min night temperature
  • 14 hours of daylight per day in August in Harrisburg14
    14 hours of daylight per day
  • Moderate heat & humidity in August in HarrisburgM
    Moderate heat & humidity
  • 3.3 inches monthly rainfall in August in Harrisburg3.3
    3.3 inches of monthly rainfall
  • UV (maximum) index 8 (Very High) in August in Harrisburg8
    8 (Very High) UV index

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Harrisburg weather in September

Expect daytime maximum temperatures of 75°F in Harrisburg, Pennsylvania in September based on long-term weather averages. There are 7 hours of sunshine per day on average with typically 3.5 inches of rainfall in the month.

  • 75°F maximum daytime temperature in September in Harrisburg75
    75°F max day temperature
  • 7 hours of sunshine per day
  • 9 days with some rainfall in September in Harrisburg9
    9 days with some rainfall
  • 55°F minimum night-time temperature in September in Harrisburg55
    55°F min night temperature
  • 12 hours of daylight per day in September in Harrisburg12
    12 hours of daylight per day
  • No heat & humidity in September in Harrisburg0
    No heat & humidity
  • 3.5 inches monthly rainfall in September in Harrisburg3.5
    3.5 inches of monthly rainfall
  • UV (maximum) index 6 (High) in September in Harrisburg6
    6 (High) UV index

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Harrisburg weather in October

Expect daytime maximum temperatures of 64°F in Harrisburg, Pennsylvania in October based on long-term weather averages. There are 6 hours of sunshine per day on average with typically 2.8 inches of rainfall in the month.

  • 64°F maximum daytime temperature in October in Harrisburg64
    64°F max day temperature
  • 6 hours of sunshine per day
  • 9 days with some rainfall in October in Harrisburg9
    9 days with some rainfall
  • 43°F minimum night-time temperature in October in Harrisburg43
    43°F min night temperature
  • 11 hours of daylight per day in October in Harrisburg11
    11 hours of daylight per day
  • No heat & humidity in October in Harrisburg0
    No heat & humidity
  • 2.8 inches monthly rainfall in October in Harrisburg2.8
    2.8 inches of monthly rainfall
  • UV (maximum) index 4 (Moderate) in October in Harrisburg4
    4 (Moderate) UV index

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Harrisburg weather in November

Expect daytime maximum temperatures of 52°F in Harrisburg, Pennsylvania in November based on long-term weather averages. There are 5 hours of sunshine per day on average with 11 days with some rainfall and typically 3.5 inches of rainfall in the month.

  • 52°F maximum daytime temperature in November in Harrisburg52
    52°F max day temperature
  • 5 hours of sunshine per day
  • 11 days with some rainfall in November in Harrisburg11
    11 days with some rainfall
  • 36°F minimum night-time temperature in November in Harrisburg36
    36°F min night temperature
  • 10 hours of daylight per day in November in Harrisburg10
    10 hours of daylight per day
  • No heat & humidity in November in Harrisburg0
    No heat & humidity
  • 3.5 inches monthly rainfall in November in Harrisburg3.5
    3.5 inches of monthly rainfall
  • UV (maximum) index 2 (Low) in November in Harrisburg2
    2 (Low) UV index

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Harrisburg weather in December

Expect daytime maximum temperatures of 41°F in Harrisburg, Pennsylvania in December based on long-term weather averages. There are 4 hours of sunshine per day on average with 11 days with some rainfall and typically 3.3 inches of rainfall in the month, which might fall as snow.

  • 41°F maximum daytime temperature in December in Harrisburg41
    41°F max day temperature
  • 4 hours of sunshine per day
  • 11 days with some rainfall in December in Harrisburg11
    11 days with some rainfall
  • 25°F minimum night-time temperature in December in Harrisburg25
    25°F min night temperature
  • 9 hours of daylight per day in December in Harrisburg9
    9 hours of daylight per day
  • No heat & humidity in December in Harrisburg0
    No heat & humidity
  • 3.3 inches monthly rainfall in December in Harrisburg3.3
    3.3 inches of monthly rainfall
  • UV (maximum) index 2 (Low) in December in Harrisburg2
    2 (Low) UV index

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More about Harrisburg

Harrisburg by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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The climate guide for Pennsylvania (Harrisburg) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C)  |  Imperial (°F)

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Compare Harrisburg with the UK

Below the Harrisburg chart shows average maximum daytime temperature for Harrisburg, Pennsylvania, USA and the UK (London).

Maximum daytime temperature (°F)

Harrisburg, Pennsylvania, USA
UK (London)
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C)  |  Imperial (°F)

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