July weather forecastSun Valley, ID

July
Weather in July
July ranks as the warmest month in Sun Valley, not only a change from June but a total departure from the city's wintry image. Temperatures peak this month with the maximum reaching a comfortable 74.1°F (23.4°C) and minimum at 50.5°F (10.3°C). With the city basking under its longest daylight hours and high sunshine percentages, the outdoors beckon irresistibly. Moreover, the dry, mild conditions offer the ideal setting for enjoying a variety of summer activities. Experiencing July's weather in Sun Valley means immersing in the city's sunniest and most vibrant phase.Temperature
Sun Valley's warmest month, July, generally records average temperatures ranging from a high of 74.1°F (23.4°C) to a low of 50.5°F (10.3°C).Humidity
In Sun Valley, the average relative humidity in July is 38%.Rainfall
The month with the least rainfall is July, when the rain falls for 5.9 days and typically collects 0.43" (11mm) of precipitation.Snowfall
July and August are months without snowfall in Sun Valley.Daylight
The average length of the day in July is 15h and 4min.On the first day of July in Sun Valley, sunrise is at 6:00 am and sunset at 9:22 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 9:01 pm MDT.
Sunshine
With an average of 12h of sunshine, July has the most sunshine of the year in Sun Valley.UV index
June and July, with an average maximum UV index of 5, are months with the highest UV index. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: In July, a regular UV index of 5 translates into these guidelines:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Sun Valley, ID
- Average high temperature in July: 74.1°F
The warmest month (with the highest average high temperature) is July (74.1°F).
The month with the lowest average high temperature is December (25°F).
- Average low temperature in July: 50.5°F
The months with the highest average low temperature are July and August (50.5°F).
The coldest month (with the lowest average low temperature) is January (8.4°F).
Average pressure in July
Sun Valley, ID
- Average pressure in July: 29.92"Hg
The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in July
Sun Valley, ID
- Average wind speed in July: 6.3mph
The windiest month (with the highest average wind speed) is July (6.3mph).
The calmest month (with the lowest average wind speed) is January (4.5mph).
Average humidity in July
Sun Valley, ID
- Average humidity in July: 38%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is August (37%).
Average rainfall in July
Sun Valley, ID
- Average rainfall in July: 0.43"
The wettest month (with the highest rainfall) is March (2.01").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in July
Sun Valley, ID
- Average rainfall days in July: 5.9 days
The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is July (5.9 days).
Average snowfall in July
Sun Valley, ID
- Average snowfall in July: 0"
The month with the highest snowfall is February (15").
The months with the least snowfall are July and August (0").
Average snowfall days in July
Sun Valley, ID
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is March (16 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in July /
Average sunshine in July
Sun Valley, ID
- Average daylight in July: 15h and 6min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in July: 12h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 42min).
Average sunshine days in July
Sun Valley, ID
- Average sunshine days in July: 20.8 days
The month with the most sunshine days is July (20.8 days).
The month with the least sunshine days is April (11.1 days).
Average UV index in July
Sun Valley, ID
- Average UV index in July: 5
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in July
Sun Valley, ID
- Average cloud cover in July: 10
The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 10).
Average visibility in July
Sun Valley, ID
- Average visibility in July: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).





