July weather forecastWest Lake Sammamish, WA
July
Weather in July
July in West Lake Sammamish, Washington, is a moderately hot summer month, with temperature in the range of an average high of 76.1°F (24.5°C) and an average low of 50.7°F (10.4°C).Temperature
As July begins, there's a slight increase in the average high-temperature, moving from a pleasant 69.3°F (20.7°C) in June to a moderately hot 76.1°F (24.5°C). Nighttime temperatures exhibit a substantial dip from daytime highs during July, averaging at a fresh 50.7°F (10.4°C).Humidity
With an average relative humidity of 70%, July is the least humid month.Rainfall
July and August are months with the least rain in West Lake Sammamish when the rain falls for 6.7 days and typically aggregates up to 0.35" (9mm) of rain.Snowfall
In West Lake Sammamish, snow does not fall in May through October.Daylight
In West Lake Sammamish, the average length of the day in July is 15h and 31min.On the first day of the month, sunrise is at 5:15 am and sunset at 9:09 pm. On the last day of July, sunrise is at 5:45 am and sunset at 8:43 pm PDT.
Sunshine
The average sunshine in July is 10.5h.UV index
The months with the highest UV index are June and July, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index, 5 in July, converts into the following recommendations:
Ensure safety - Recommendations to avert sunburn are presented. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
West Lake Sammamish, WA
- Average high temperature in July: 76.1°F
The warmest month (with the highest average high temperature) is August (76.5°F).
The month with the lowest average high temperature is December (42.3°F).
- Average low temperature in July: 50.7°F
The month with the highest average low temperature is August (52.2°F).
The coldest month (with the lowest average low temperature) is December (33.6°F).
Average pressure in July
West Lake Sammamish, 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
West Lake Sammamish, WA
- Average wind speed in July: 3.5mph
The windiest month (with the highest average wind speed) is January (5mph).
The calmest month (with the lowest average wind speed) is August (3.4mph).
Average humidity in July
West Lake Sammamish, WA
- Average humidity in July: 70%
The months with the highest relative humidity are January, February and December (85%).
The month with the lowest relative humidity is July (70%).
Average rainfall in July
West Lake Sammamish, WA
- Average rainfall in July: 0.35"
The wettest month (with the highest rainfall) is December (1.85").
The driest months (with the least rainfall) are July and August (0.35").
Average rainfall days in July
West Lake Sammamish, WA
- Average rainfall days in July: 6.7 days
The month with the highest number of rainy days is March (14.8 days).
The month with the least rainy days is August (5.2 days).
Average snowfall in July
West Lake Sammamish, WA
- Average snowfall in July: 0"
The month with the highest snowfall is February (1.38").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in July
West Lake Sammamish, WA
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is February (3.2 days).
The months with the least snowfall days are May, June, July, August and October (0 days).
Average daylight in July /
Average sunshine in July
West Lake Sammamish, 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 30min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 4h and 12min).
Average sunshine days in July
West Lake Sammamish, WA
- Average sunshine days in July: 22.3 days
The month with the most sunshine days is August (24 days).
The month with the least sunshine days is November (13.5 days).
Average UV index in July
West Lake Sammamish, 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
West Lake Sammamish, WA
- Average cloud cover in July: 28
The month with the most cloud cover is December (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in July
West Lake Sammamish, WA
- Average visibility in July: 6mi
The months with the highest visibility are June, July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, May, October, November and December (5mi).
