Climate and monthly weather forecastSun Valley, CA
Climate and monthly weather forecast
Weather in January
January, the same as December, is another comfortable winter month in Sun Valley, California, with an average temperature varying between 63.5°F (17.5°C) and 47.5°F (8.6°C). Sun Valley's January average high-temperature settles at a still enjoyable 63.5°F (17.5°C), showing a near match with the preceding month. Weather in January »Weather in February
February, the last month of the winter in Sun Valley, is another refreshing month, with an average temperature varying between 63.3°F (17.4°C) and 46.8°F (8.2°C). Sun Valley observes a minor difference in average high-temperatures between January's 63.5°F (17.5°C) and February's 63.3°F (17.4°C). Weather in February »Weather in March
The first month of the spring, March, is still a refreshing month in Sun Valley, California, with an average temperature fluctuating between 48.6°F (9.2°C) and 66.6°F (19.2°C). March is marked by an average high-temperature of a still refreshing 66.6°F (19.2°C), almost identical to the preceding month. Weather in March »Weather in April
April is an agreeable spring month in Sun Valley, California, with an average temperature ranging between max 70.7°F (21.5°C) and min 50.7°F (10.4°C). April's commencement is accompanied by an average high-temperature of an agreeable 70.7°F (21.5°C), diverging marginally from March's 66.6°F (19.2°C). Weather in April »Weather in May
The last month of the spring, May, is a warm month in Sun Valley, California, with an average temperature varying between 73.8°F (23.2°C) and 54.3°F (12.4°C). Sun Valley's entry into May measures an average high-temperature of a moderately hot 73.8°F (23.2°C), closely parallel to the preceding month. Weather in May »Weather in June
June, the first month of the summer in Sun Valley, is also a moderately hot month, with an average temperature fluctuating between 58.3°F (14.6°C) and 79.5°F (26.4°C). A soft shift in the average high-temperature is noticeable in June, transitioning from 73.8°F (23.2°C) in May to a still moderately hot 79.5°F (26.4°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Sun Valley, California, with temperature in the range of an average high of 84.7°F (29.3°C) and an average low of 63.5°F (17.5°C). The arrival of July coincides with an average high-temperature of a still moderately hot 84.7°F (29.3°C), indicating a minimal shift from June's 79.5°F (26.4°C). Weather in July »Weather in August
The last month of the summer, August, is a hot month in Sun Valley, California, with temperature in the range of an average high of 86.5°F (30.3°C) and an average low of 64.8°F (18.2°C). Sun Valley's August weather, marked by an average high temperature of 86.5°F (30.3°C) and an average low temperature of 64.8°F (18.2°C), is the warmest in the year. The heat index value for August is evaluated at a hot 89.6°F (32°C). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Sun Valley, California, with temperature in the range of an average high of 83.3°F (28.5°C) and an average low of 63.1°F (17.3°C). The onset of September manifests an average high-temperature of a warm 83.3°F (28.5°C), demonstrating a minor variation from the preceding month. Weather in September »Weather in October
October, like September, in Sun Valley, California, is another warm autumn month, with an average temperature varying between 77°F (25°C) and 58.1°F (14.5°C). The commencement of October includes a gentle temperature shift, with the average high-temperature dropping a bit from a moderately hot 83.3°F (28.5°C) in September to a still warm 77°F (25°C). Weather in October »Weather in November
The last month of the autumn, November, is also an agreeable month in Sun Valley, California, with an average temperature ranging between max 69.4°F (20.8°C) and min 52.7°F (11.5°C). With November's onset, the weather reveals a slight temperature decrease, transitioning from a moderately hot 77°F (25°C) in October to an agreeable 69.4°F (20.8°C). Weather in November »Weather in December
The first month of the winter, December, is still a comfortable month in Sun Valley, California, with an average temperature ranging between min 46.2°F (7.9°C) and max 61.7°F (16.5°C). With its high average temperature of 61.7°F (16.5°C) and a low of 46.2°F (7.9°C), December is regarded as the coldest month. Weather in December »Updated: Jul 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Sun Valley, during the entire year, the rain falls for 40.1 days and collects up to 5.87" (149mm) of precipitation.
The months with the least sunshine are January, February and December, with an average of 6.9h of sunshine.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.
June is the most humid month, with an average relative humidity of 59%.
June is the month with the least rainfall. Rain falls for 1 days and accumulates 0.04" (1mm) of precipitation.
With an average of 14h and 24min of daylight, June has the longest days of the year.
The months with the most sunshine are June through August, with an average of 12.1h of sunshine.
June through September, with an average maximum UV index of 6, are months with the highest UV index.
The highest temperatures are recorded in August, with averages reaching a high of 86.5°F (30.3°C) and a low of 64.8°F (18.2°C).
November is the least humid month, with an average relative humidity of 48%.
The month of December, characterized by an average high of 61.7°F (16.5°C) and a low of 46.2°F (7.9°C), is recognized as the coldest in Sun Valley.
December is the month with the most rainfall in Sun Valley. Rain falls for 4.6 days and accumulates 1.18" (30mm) of precipitation.
With an average of 9h and 54min of daylight, December has the shortest days of the year.
The month with the lowest UV index is December, with an average maximum UV index of 3.
Average temperature
Sun Valley, CA
The warmest month (with the highest average high temperature) is August (86.5°F).
The month with the lowest average high temperature is December (61.7°F).
The month with the highest average low temperature is August (64.8°F).
The coldest month (with the lowest average low temperature) is December (46.2°F).
Average pressure
Sun Valley, CA
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.05"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
29.97"Hg - Average pressure in May:
29.93"Hg - Average pressure in June:
29.88"Hg
- Average pressure in July:
29.91"Hg - Average pressure in August:
29.9"Hg - Average pressure in September:
29.89"Hg - Average pressure in October:
29.95"Hg - Average pressure in November:
30.03"Hg - Average pressure in December:
30.08"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed
Sun Valley, CA
- Average wind speed in January:
5.7mph - Average wind speed in February:
5.4mph - Average wind speed in March:
5.5mph - Average wind speed in April:
5.9mph - Average wind speed in May:
5.5mph - Average wind speed in June:
5.1mph
- Average wind speed in July:
4.9mph - Average wind speed in August:
4.5mph - Average wind speed in September:
4.4mph - Average wind speed in October:
4.8mph - Average wind speed in November:
5.2mph - Average wind speed in December:
5.6mph
The windiest month (with the highest average wind speed) is April (5.9mph).
The calmest month (with the lowest average wind speed) is September (4.4mph).
Average humidity
Sun Valley, CA
The month with the highest relative humidity is June (59%).
The month with the lowest relative humidity is November (48%).
Average rainfall
Sun Valley, CA
- Average rainfall in January:
0.94" - Average rainfall in February:
0.94" - Average rainfall in March:
0.87" - Average rainfall in April:
0.43" - Average rainfall in May:
0.16" - Average rainfall in June:
0.04"
- Average rainfall in July:
0.24" - Average rainfall in August:
0.12" - Average rainfall in September:
0.16" - Average rainfall in October:
0.16" - Average rainfall in November:
0.63" - Average rainfall in December:
1.18"
The wettest month (with the highest rainfall) is December (1.18").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days
Sun Valley, CA
- Average rainfall days in January:
4.1 days - Average rainfall days in February:
4.5 days - Average rainfall days in March:
5.2 days - Average rainfall days in April:
4.1 days - Average rainfall days in May:
2.9 days - Average rainfall days in June:
1 days
- Average rainfall days in July:
3.3 days - Average rainfall days in August:
1.7 days - Average rainfall days in September:
2.7 days - Average rainfall days in October:
2.5 days - Average rainfall days in November:
3.5 days - Average rainfall days in December:
4.6 days
The month with the highest number of rainy days is March (5.2 days).
The month with the least rainy days is June (1 days).
Average daylight / Average sunshine
Sun Valley, CA
- Average daylight in January:
10h and 12min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 6min - Average daylight in May:
14h and 0min - Average daylight in June:
14h and 24min
- Average daylight in July:
14h and 12min - Average daylight in August:
13h and 24min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 24min - Average daylight in December:
9h and 54min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in January:
6h and 54min - Average sunshine in February:
6h and 54min - Average sunshine in March:
9h and 0min - Average sunshine in April:
11h and 18min - Average sunshine in May:
11h and 42min - Average sunshine in June:
12h and 6min
- Average sunshine in July:
12h and 6min - Average sunshine in August:
12h and 6min - Average sunshine in September:
10h and 48min - Average sunshine in October:
8h and 30min - Average sunshine in November:
7h and 18min - Average sunshine in December:
6h and 54min
The months with the most sunshine are June, July and August (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 54min).
Average sunshine days
Sun Valley, CA
- Average sunshine days in January:
25.9 days - Average sunshine days in February:
22.9 days - Average sunshine days in March:
25.6 days - Average sunshine days in April:
25.8 days - Average sunshine days in May:
26.1 days - Average sunshine days in June:
26.3 days
- Average sunshine days in July:
24.9 days - Average sunshine days in August:
26.3 days - Average sunshine days in September:
25 days - Average sunshine days in October:
27.1 days - Average sunshine days in November:
26.1 days - Average sunshine days in December:
25.5 days
The month with the most sunshine days is October (27.1 days).
The month with the least sunshine days is February (22.9 days).
Average UV index
Sun Valley, CA
The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover
Sun Valley, CA
The months with the most cloud cover are March and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 4).
Average visibility
Sun Valley, CA
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
