July weather forecastIssaquah, WA
July
Weather in July
The heart of summer, July, sees Issaquah basking in warm weather. July celebrates the highest average temperature of the year at 76.1°F (24.5°C), encouraging a stream of sun enthusiasts. With minimum recorded rainfall, 0.24" (6mm), and the peak of UV index at 5, it's definitely a month for sunblock. Despite being the hottest month, the wind speed witnesses a small reduction from June. No snowfall, reduced cloud cover of only 29%, and an average of 24.9 days of sunshine encapsulate why July is the optimum time for beach outings and barbecues.Temperature
In Issaquah, the average high-temperature in July slightly increases from a pleasant 69.4°F (20.8°C) in June to a warm 76.1°F (24.5°C). During July, Issaquah perceives a consistent contrast from the daytime highs, with an average low-temperature of 50°F (10°C).Humidity
With an average relative humidity of 69%, July is the least humid month.Rainfall
July is the month with the least rainfall. Rain falls for 4.9 days and accumulates 0.24" (6mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in July in Issaquah is 15h and 31min.On the first day of July, sunrise is at 5:15 am and sunset at 9:09 pm. On the last day of the month, sunrise is at 5:45 am and sunset at 8:43 pm PDT.
Sunshine
In July, the average sunshine is 10.3h.UV index
With an average maximum UV index of 5, July is the month with the highest UV index. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: In July, the average maximum UV index of 5 translates into the following recommendations:
Preventative actions are necessary - Recommendations to ward off sunburn are given. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Issaquah, WA
- Average high temperature in July: 76.1°F
The warmest month (with the highest average high temperature) is August (77°F).
The month with the lowest average high temperature is December (42.3°F).
- Average low temperature in July: 50°F
The month with the highest average low temperature is August (51.4°F).
The coldest months (with the lowest average low temperature) are February and December (33.4°F).
Average pressure in July
Issaquah, WA
- Average pressure in July: 30.03"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in July
Issaquah, WA
- Average wind speed in July: 3.5mph
The windiest month (with the highest average wind speed) is January (5.1mph).
The calmest month (with the lowest average wind speed) is August (3.4mph).
Average humidity in July
Issaquah, WA
- Average humidity in July: 69%
The months with the highest relative humidity are January and February (85%).
The month with the lowest relative humidity is July (69%).
Average rainfall in July
Issaquah, WA
- Average rainfall in July: 0.24"
The wettest month (with the highest rainfall) is December (2.01").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in July
Issaquah, WA
- Average rainfall days in July: 4.9 days
The month with the highest number of rainy days is March (14.8 days).
The month with the least rainy days is August (4.3 days).
Average snowfall in July
Issaquah, WA
- Average snowfall in July: 0"
The month with the highest snowfall is February (0.94").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in July
Issaquah, WA
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is February (2.5 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
Issaquah, WA
- Average daylight in July: 15h and 30min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in July: 10h and 18min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 4h and 0min).
Average sunshine days in July
Issaquah, WA
- Average sunshine days in July: 24.9 days
The month with the most sunshine days is August (25 days).
The month with the least sunshine days is February (12.9 days).
Average UV index in July
Issaquah, WA
- Average UV index in July: 5
The month with the highest UV index is 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
Issaquah, WA
- Average cloud cover in July: 29
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 27).
Average visibility in July
Issaquah, WA
- Average visibility in July: 6mi
The months with the highest visibility are July and August (6mi).
The months with the lowest visibility are January, February and December (4mi).
