July weather forecastCuster, WA
July
Weather in July
July in Custer, Washington, is an agreeable summer month, with an average temperature varying between 53.4°F (11.9°C) and 69.8°F (21°C).Temperature
Transitioning into July, Custer experiences an average high-temperature of an agreeable 69.8°F (21°C), marking a minor shift from the preceding month. Custer usually reports an average low-temperature of 53.4°F (11.9°C) during the month of July.Humidity
July is the least humid month in Custer, with an average relative humidity of 74%.Rainfall
July is the month with the least rainfall. Rain falls for 7.3 days and accumulates 0.67" (17mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In July, the average length of the day is 15h and 42min.On the first day of the month, sunrise is at 5:11 am and sunset at 9:17 pm. On the last day of July, sunrise is at 5:43 am and sunset at 8:50 pm PDT.
Sunshine
The months with the most sunshine are July and August, with an average of 10.4h of sunshine.UV index
The months with the highest UV index in Custer, Washington, are June and July, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 5 during July leads to these advisories:
Take precautions - Protection against skin and eye damage is obliged. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Custer, WA
- Average high temperature in July: 69.8°F
The warmest month (with the highest average high temperature) is August (70°F).
The month with the lowest average high temperature is December (41.9°F).
- Average low temperature in July: 53.4°F
The month with the highest average low temperature is August (54.9°F).
The coldest month (with the lowest average low temperature) is February (35.8°F).
Average pressure in July
Custer, WA
- Average pressure in July: 30.04"Hg
The month with the highest atmospheric pressure is January (30.07"Hg).
The month with the lowest atmospheric pressure is March (30"Hg).
Average wind speed in July
Custer, WA
- Average wind speed in July: 4.3mph
The windiest months (with the highest average wind speed) are November and December (6.3mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity in July
Custer, WA
- Average humidity in July: 74%
The months with the highest relative humidity are January and November (83%).
The month with the lowest relative humidity is July (74%).
Average rainfall in July
Custer, WA
- Average rainfall in July: 0.67"
The wettest month (with the highest rainfall) is November (7.13").
The driest month (with the least rainfall) is July (0.67").
Average rainfall days in July
Custer, WA
- Average rainfall days in July: 7.3 days
The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (6.1 days).
Average snowfall in July
Custer, WA
- Average snowfall in July: 0"
The month with the highest snowfall is February (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in July
Custer, WA
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is February (3.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in July /
Average sunshine in July
Custer, WA
- Average daylight in July: 15h and 42min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in July: 10h and 24min
The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The months with the least sunshine are January and December (Average sunshine: 3h and 54min).
Average sunshine days in July
Custer, WA
- Average sunshine days in July: 22.3 days
The month with the most sunshine days is August (23.2 days).
The month with the least sunshine days is November (8.8 days).
Average UV index in July
Custer, WA
- Average UV index in July: 5
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in July
Custer, WA
- Average cloud cover in July: 27
The months with the most cloud cover are January and December (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in July
Custer, WA
- Average visibility in July: 6mi
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).





