July weather forecastSunnyside, WA
July
Weather in July
July is a hot summer month in Sunnyside, Washington, with an average temperature ranging between min 60.8°F (16°C) and max 87.1°F (30.6°C).Temperature
The warmest period tends to be July, when average temperatures fluctuate between a high of 87.1°F (30.6°C) and a low of 60.8°F (16°C).Humidity
July and August, with an average relative humidity of 38%, are the least humid months.Rainfall
July is the month with the least rainfall. Rain falls for 4.1 days and accumulates 0.24" (6mm) of precipitation.Snowfall
April through August and October are months without snowfall.Daylight
In Sunnyside, the average length of the day in July is 15h and 22min.On the first day of July, sunrise is at 5:12 am and sunset at 8:55 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 8:31 pm PDT.
Sunshine
July and August, with an average of 12h of sunshine, are months with the most sunshine.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In July, the UV index of 6 transforms into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Sunnyside, WA
- Average high temperature in July: 87.1°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is December (36.1°F).
- Average low temperature in July: 60.8°F
The month with the highest average low temperature is August (61.5°F).
The coldest month (with the lowest average low temperature) is December (25.3°F).
Average pressure in July
Sunnyside, WA
- Average pressure in July: 29.94"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).
Average wind speed in July
Sunnyside, WA
- Average wind speed in July: 6.8mph
The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is December (5mph).
Average humidity in July
Sunnyside, WA
- Average humidity in July: 38%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are July and August (38%).
Average rainfall in July
Sunnyside, WA
- Average rainfall in July: 0.24"
The wettest month (with the highest rainfall) is May (1.1").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in July
Sunnyside, WA
- Average rainfall days in July: 4.1 days
The month with the highest number of rainy days is March (13.3 days).
The month with the least rainy days is July (4.1 days).
Average snowfall in July
Sunnyside, WA
- Average snowfall in July: 0"
The month with the highest snowfall is December (2.24").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days in July
Sunnyside, WA
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is December (5 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average daylight in July /
Average sunshine in July
Sunnyside, WA
- Average daylight in July: 15h and 24min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in July: 12h and 0min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in July
Sunnyside, WA
- Average sunshine days in July: 26.2 days
The month with the most sunshine days is July (26.2 days).
The month with the least sunshine days is March (15.4 days).
Average UV index in July
Sunnyside, WA
- Average UV index in July: 6
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in July
Sunnyside, WA
- Average cloud cover in July: 10
The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 10).
Average visibility in July
Sunnyside, WA
- Average visibility in July: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).





