Ketchikan weather by month

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

Temperature in Ketchikan (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
2°C maximum daytime temperature in January in Ketchikan2
4°C maximum daytime temperature in February in Ketchikan4
5°C maximum daytime temperature in March in Ketchikan5
8°C maximum daytime temperature in April in Ketchikan8
12°C maximum daytime temperature in May in Ketchikan12
15°C maximum daytime temperature in June in Ketchikan15
17°C maximum daytime temperature in July in Ketchikan17
17°C maximum daytime temperature in August in Ketchikan17
14°C maximum daytime temperature in September in Ketchikan14
9°C maximum daytime temperature in October in Ketchikan9
5°C maximum daytime temperature in November in Ketchikan5
3°C maximum daytime temperature in December in Ketchikan3
Min temperature (night-time)
-3°C minimum night-time temperature in January in Ketchikan-3
-2°C minimum night-time temperature in February in Ketchikan-2
-1°C minimum night-time temperature in March in Ketchikan-1
1°C minimum night-time temperature in April in Ketchikan1
4°C minimum night-time temperature in May in Ketchikan4
7°C minimum night-time temperature in June in Ketchikan7
9°C minimum night-time temperature in July in Ketchikan9
9°C minimum night-time temperature in August in Ketchikan9
7°C minimum night-time temperature in September in Ketchikan7
4°C minimum night-time temperature in October in Ketchikan4
-1°C minimum night-time temperature in November in Ketchikan-1
-2°C minimum night-time temperature in December in Ketchikan-2
Heat & Humidity
No heat & humidity in January in Ketchikan0
No heat & humidity in February in Ketchikan0
No heat & humidity in March in Ketchikan0
No heat & humidity in April in Ketchikan0
No heat & humidity in May in Ketchikan0
No heat & humidity in June in Ketchikan0
No heat & humidity in July in Ketchikan0
No heat & humidity in August in Ketchikan0
No heat & humidity in September in Ketchikan0
No heat & humidity in October in Ketchikan0
No heat & humidity in November in Ketchikan0
No heat & humidity in December in Ketchikan0
Sea temperature
6°C sea temperature in January in Ketchikan6
5°C sea temperature in February in Ketchikan5
5°C sea temperature in March in Ketchikan5
7°C sea temperature in April in Ketchikan7
9°C sea temperature in May in Ketchikan9
12°C sea temperature in June in Ketchikan12
14°C sea temperature in July in Ketchikan14
14°C sea temperature in August in Ketchikan14
12°C sea temperature in September in Ketchikan12
9°C sea temperature in October in Ketchikan9
8°C sea temperature in November in Ketchikan8
7°C sea temperature in December in Ketchikan7

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

Sunshine & Daylight in Ketchikan

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
8 hours of daylight per day in January in Ketchikan8
10 hours of daylight per day in February in Ketchikan10
12 hours of daylight per day in March in Ketchikan12
14 hours of daylight per day in April in Ketchikan14
16 hours of daylight per day in May in Ketchikan16
17 hours of daylight per day in June in Ketchikan17
17 hours of daylight per day in July in Ketchikan17
15 hours of daylight per day in August in Ketchikan15
13 hours of daylight per day in September in Ketchikan13
10 hours of daylight per day in October in Ketchikan10
8 hours of daylight per day in November in Ketchikan8
7 hours of daylight per day in December in Ketchikan7
UV Index (Maximum)
No UV (maximum) index in January in Ketchikan0
UV (maximum) index 1 (Low) in February in Ketchikan1
UV (maximum) index 2 (Low) in March in Ketchikan2
UV (maximum) index 3 (Moderate) in April in Ketchikan3
UV (maximum) index 5 (Moderate) in May in Ketchikan5
UV (maximum) index 5 (Moderate) in June in Ketchikan5
UV (maximum) index 6 (High) in July in Ketchikan6
UV (maximum) index 5 (Moderate) in August in Ketchikan5
UV (maximum) index 3 (Moderate) in September in Ketchikan3
UV (maximum) index 1 (Low) in October in Ketchikan1
UV (maximum) index 1 (Low) in November in Ketchikan1
No UV (maximum) index in December in Ketchikan0

Rainfall in Ketchikan

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
19 days with some rainfall in January in Ketchikan19
17 days with some rainfall in February in Ketchikan17
18 days with some rainfall in March in Ketchikan18
17 days with some rainfall in April in Ketchikan17
16 days with some rainfall in May in Ketchikan16
15 days with some rainfall in June in Ketchikan15
14 days with some rainfall in July in Ketchikan14
15 days with some rainfall in August in Ketchikan15
18 days with some rainfall in September in Ketchikan18
23 days with some rainfall in October in Ketchikan23
20 days with some rainfall in November in Ketchikan20
21 days with some rainfall in December in Ketchikan21
Average monthly rainfall (mm)
284 mm monthly rainfall in January in Ketchikan284
267 mm monthly rainfall in February in Ketchikan267
237 mm monthly rainfall in March in Ketchikan237
236 mm monthly rainfall in April in Ketchikan236
188 mm monthly rainfall in May in Ketchikan188
157 mm monthly rainfall in June in Ketchikan157
154 mm monthly rainfall in July in Ketchikan154
222 mm monthly rainfall in August in Ketchikan222
279 mm monthly rainfall in September in Ketchikan279
480 mm monthly rainfall in October in Ketchikan480
358 mm monthly rainfall in November in Ketchikan358
341 mm monthly rainfall in December in Ketchikan341

More about Ketchikan

Ketchikan by month

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

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The climate guide for Alaska (Ketchikan) 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 Ketchikan?

Ketchikan has a temperate climate with warm summers and some rainfall in all months.

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

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More about the USA

Compare Ketchikan with the UK

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

Maximum daytime temperature (°C)

Ketchikan, Alaska, USA
UK (London)
2
7
4
7
5
10
8
13
12
17
15
20
17
22
17
22
14
19
9
15
5
10
3
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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

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