Juneau weather by month

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

Temperature in Juneau (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
-3°C maximum daytime temperature in January in Juneau-3
0°C maximum daytime temperature in February in Juneau0
2°C maximum daytime temperature in March in Juneau2
7°C maximum daytime temperature in April in Juneau7
11°C maximum daytime temperature in May in Juneau11
14°C maximum daytime temperature in June in Juneau14
16°C maximum daytime temperature in July in Juneau16
15°C maximum daytime temperature in August in Juneau15
12°C maximum daytime temperature in September in Juneau12
7°C maximum daytime temperature in October in Juneau7
1°C maximum daytime temperature in November in Juneau1
-1°C maximum daytime temperature in December in Juneau-1
Min temperature (night-time)
-9°C minimum night-time temperature in January in Juneau-9
-7°C minimum night-time temperature in February in Juneau-7
-5°C minimum night-time temperature in March in Juneau-5
-2°C minimum night-time temperature in April in Juneau-2
2°C minimum night-time temperature in May in Juneau2
5°C minimum night-time temperature in June in Juneau5
7°C minimum night-time temperature in July in Juneau7
6°C minimum night-time temperature in August in Juneau6
4°C minimum night-time temperature in September in Juneau4
1°C minimum night-time temperature in October in Juneau1
-4°C minimum night-time temperature in November in Juneau-4
-7°C minimum night-time temperature in December in Juneau-7
Heat & Humidity
No heat & humidity in January in Juneau0
No heat & humidity in February in Juneau0
No heat & humidity in March in Juneau0
No heat & humidity in April in Juneau0
No heat & humidity in May in Juneau0
No heat & humidity in June in Juneau0
No heat & humidity in July in Juneau0
No heat & humidity in August in Juneau0
No heat & humidity in September in Juneau0
No heat & humidity in October in Juneau0
No heat & humidity in November in Juneau0
No heat & humidity in December in Juneau0
Sea temperature
4°C sea temperature in January in Juneau4
4°C sea temperature in February in Juneau4
4°C sea temperature in March in Juneau4
5°C sea temperature in April in Juneau5
7°C sea temperature in May in Juneau7
10°C sea temperature in June in Juneau10
12°C sea temperature in July in Juneau12
13°C sea temperature in August in Juneau13
10°C sea temperature in September in Juneau10
8°C sea temperature in October in Juneau8
6°C sea temperature in November in Juneau6
5°C sea temperature in December in Juneau5

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

Sunshine & Daylight in Juneau

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
7 hours of daylight per day in January in Juneau7
9 hours of daylight per day in February in Juneau9
12 hours of daylight per day in March in Juneau12
15 hours of daylight per day in April in Juneau15
17 hours of daylight per day in May in Juneau17
18 hours of daylight per day in June in Juneau18
17 hours of daylight per day in July in Juneau17
15 hours of daylight per day in August in Juneau15
13 hours of daylight per day in September in Juneau13
10 hours of daylight per day in October in Juneau10
8 hours of daylight per day in November in Juneau8
7 hours of daylight per day in December in Juneau7
UV Index (Maximum)
No UV (maximum) index in January in Juneau0
UV (maximum) index 1 (Low) in February in Juneau1
UV (maximum) index 2 (Low) in March in Juneau2
UV (maximum) index 3 (Moderate) in April in Juneau3
UV (maximum) index 4 (Moderate) in May in Juneau4
UV (maximum) index 5 (Moderate) in June in Juneau5
UV (maximum) index 5 (Moderate) in July in Juneau5
UV (maximum) index 4 (Moderate) in August in Juneau4
UV (maximum) index 3 (Moderate) in September in Juneau3
UV (maximum) index 1 (Low) in October in Juneau1
No UV (maximum) index in November in Juneau0
No UV (maximum) index in December in Juneau0

Rainfall in Juneau

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
17 days with some rainfall in January in Juneau17
15 days with some rainfall in February in Juneau15
16 days with some rainfall in March in Juneau16
15 days with some rainfall in April in Juneau15
15 days with some rainfall in May in Juneau15
15 days with some rainfall in June in Juneau15
15 days with some rainfall in July in Juneau15
17 days with some rainfall in August in Juneau17
19 days with some rainfall in September in Juneau19
22 days with some rainfall in October in Juneau22
18 days with some rainfall in November in Juneau18
19 days with some rainfall in December in Juneau19
Average monthly rainfall (mm)
147 mm monthly rainfall in January in Juneau147
123 mm monthly rainfall in February in Juneau123
113 mm monthly rainfall in March in Juneau113
90 mm monthly rainfall in April in Juneau90
101 mm monthly rainfall in May in Juneau101
92 mm monthly rainfall in June in Juneau92
117 mm monthly rainfall in July in Juneau117
157 mm monthly rainfall in August in Juneau157
210 mm monthly rainfall in September in Juneau210
253 mm monthly rainfall in October in Juneau253
169 mm monthly rainfall in November in Juneau169
155 mm monthly rainfall in December in Juneau155

More about Juneau

Juneau by month

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

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The climate guide for Alaska (Juneau) 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 Juneau?

Juneau has a cold climate with cool summers and some rainfall in all months.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about the USA

Compare Juneau with the USA

Below the Juneau chart shows average maximum daytime temperature for Juneau, Alaska, USA and the USA (Washington).

Maximum daytime temperature (°C)

Juneau, Alaska, USA
USA (Washington)
5
0
7
2
13
7
19
11
24
14
29
16
31
15
30
12
26
7
20
1
14
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
-3
-1

Metric (°C / mm)  |  Imperial (°F / inches)

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