Sun Valley weather by month

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

Temperature in Sun Valley (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
-2°C maximum daytime temperature in January in Sun Valley-2
1°C maximum daytime temperature in February in Sun Valley1
4°C maximum daytime temperature in March in Sun Valley4
10°C maximum daytime temperature in April in Sun Valley10
16°C maximum daytime temperature in May in Sun Valley16
20°C maximum daytime temperature in June in Sun Valley20
26°C maximum daytime temperature in July in Sun Valley26
25°C maximum daytime temperature in August in Sun Valley25
20°C maximum daytime temperature in September in Sun Valley20
13°C maximum daytime temperature in October in Sun Valley13
4°C maximum daytime temperature in November in Sun Valley4
-1°C maximum daytime temperature in December in Sun Valley-1
Min temperature (night-time)
-14°C minimum night-time temperature in January in Sun Valley-14
-12°C minimum night-time temperature in February in Sun Valley-12
-9°C minimum night-time temperature in March in Sun Valley-9
-5°C minimum night-time temperature in April in Sun Valley-5
-1°C minimum night-time temperature in May in Sun Valley-1
3°C minimum night-time temperature in June in Sun Valley3
6°C minimum night-time temperature in July in Sun Valley6
5°C minimum night-time temperature in August in Sun Valley5
1°C minimum night-time temperature in September in Sun Valley1
-4°C minimum night-time temperature in October in Sun Valley-4
-9°C minimum night-time temperature in November in Sun Valley-9
-13°C minimum night-time temperature in December in Sun Valley-13
Heat & Humidity
No heat & humidity in January in Sun Valley0
No heat & humidity in February in Sun Valley0
No heat & humidity in March in Sun Valley0
No heat & humidity in April in Sun Valley0
No heat & humidity in May in Sun Valley0
No heat & humidity in June in Sun Valley0
No heat & humidity in July in Sun Valley0
No heat & humidity in August in Sun Valley0
No heat & humidity in September in Sun Valley0
No heat & humidity in October in Sun Valley0
No heat & humidity in November in Sun Valley0
No heat & humidity in December in Sun Valley0

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

Sunshine & Daylight in Sun Valley

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
9 hours of daylight per day in January in Sun Valley9
11 hours of daylight per day in February in Sun Valley11
12 hours of daylight per day in March in Sun Valley12
13 hours of daylight per day in April in Sun Valley13
15 hours of daylight per day in May in Sun Valley15
15 hours of daylight per day in June in Sun Valley15
15 hours of daylight per day in July in Sun Valley15
14 hours of daylight per day in August in Sun Valley14
12 hours of daylight per day in September in Sun Valley12
11 hours of daylight per day in October in Sun Valley11
10 hours of daylight per day in November in Sun Valley10
9 hours of daylight per day in December in Sun Valley9
UV Index (Maximum)
UV (maximum) index 2 (Low) in January in Sun Valley2
UV (maximum) index 2 (Low) in February in Sun Valley2
UV (maximum) index 4 (Moderate) in March in Sun Valley4
UV (maximum) index 6 (High) in April in Sun Valley6
UV (maximum) index 8 (Very High) in May in Sun Valley8
UV (maximum) index 9 (Very High) in June in Sun Valley9
UV (maximum) index 10 (Very High) in July in Sun Valley10
UV (maximum) index 9 (Very High) in August in Sun Valley9
UV (maximum) index 6 (High) in September in Sun Valley6
UV (maximum) index 4 (Moderate) in October in Sun Valley4
UV (maximum) index 2 (Low) in November in Sun Valley2
UV (maximum) index 1 (Low) in December in Sun Valley1

Rainfall in Sun Valley

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
13 days with some rainfall in January in Sun Valley13
11 days with some rainfall in February in Sun Valley11
13 days with some rainfall in March in Sun Valley13
11 days with some rainfall in April in Sun Valley11
11 days with some rainfall in May in Sun Valley11
9 days with some rainfall in June in Sun Valley9
7 days with some rainfall in July in Sun Valley7
8 days with some rainfall in August in Sun Valley8
8 days with some rainfall in September in Sun Valley8
7 days with some rainfall in October in Sun Valley7
11 days with some rainfall in November in Sun Valley11
13 days with some rainfall in December in Sun Valley13
Average monthly rainfall (mm)
67 mm monthly rainfall in January in Sun Valley67
50 mm monthly rainfall in February in Sun Valley50
44 mm monthly rainfall in March in Sun Valley44
33 mm monthly rainfall in April in Sun Valley33
43 mm monthly rainfall in May in Sun Valley43
42 mm monthly rainfall in June in Sun Valley42
21 mm monthly rainfall in July in Sun Valley21
27 mm monthly rainfall in August in Sun Valley27
26 mm monthly rainfall in September in Sun Valley26
29 mm monthly rainfall in October in Sun Valley29
48 mm monthly rainfall in November in Sun Valley48
67 mm monthly rainfall in December in Sun Valley67

More about Sun Valley

Sun Valley by month

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

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The climate guide for Idaho (Sun Valley) 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 Sun Valley?

Sun Valley has a cold climate with warm dry summers.

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

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More about the USA

Compare Sun Valley with the USA

Below the Sun Valley chart shows average maximum daytime temperature for Sun Valley, Idaho, USA and the USA (Washington).

Maximum daytime temperature (°C)

Sun Valley, Idaho, USA
USA (Washington)
5
1
7
4
13
10
19
16
24
20
29
26
31
25
30
20
26
13
20
4
14
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
-2
-1

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

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