July weather forecastSammamish, WA
July
Weather in July
July is renowned for hosting the highest temperatures in Sammamish, marking the peak of summer with an average peak of 76.1°F (24.5°C). This summertime heat is partly offset by the lowest levels of humidity found throughout the year, standing at 70%. Coupled with this, the city enjoys the longest sunlight hours in a day, touching 15.5 hours. The rather high UV index of 5 warrants generous application of sunblock for locals and visitors alike. Notably, an eco resort with water sports could be an attractive proposition in this weather.Temperature
Sammamish's weather shows a minor temperature rise with the arrival of July, moving from a pleasant 69.3°F (20.7°C) in June to a moderately hot 76.1°F (24.5°C). Sammamish experiences a significant contrast between daily highs and an average nighttime temperature of 50.7°F (10.4°C) during July.Humidity
With an average relative humidity of 70%, July is the least humid month in Sammamish.Rainfall
The months with the least rainfall are July and August Rain falls for 6.7 days and accumulates 0.35" (9mm) of rain.Snowfall
In Sammamish, snow does not fall in May through October.Daylight
In July, the average length of the day in Sammamish, Washington, is 15h and 31min.On the first day of July, sunrise is at 5:14 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 Sammamish, Washington, 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 medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In July, the average maximum UV index of 5 translates into the following recommendations:
Heed the precautions - It is counselled to guard against solar damage. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
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
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
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
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
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
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
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
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
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
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
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
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
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).
