July weather forecastGrand Coulee, WA
July
Weather in July
July, the same as June, is a moderately hot summer month in Grand Coulee, Washington, with an average temperature fluctuating between 84.9°F (29.4°C) and 59.7°F (15.4°C).Temperature
With average high temperatures of 84.9°F (29.4°C) and lows of 59.7°F (15.4°C), July is the warmest month.Humidity
In Grand Coulee, the average relative humidity in July is 37%.Rainfall
July and August are months with the least rain when the rain falls for 4.2 days and typically aggregates up to 0.2" (5mm) of rain.Snowfall
May through August are months without snowfall.Daylight
In July, the average length of the day is 15h and 34min.On the first day of July, sunrise is at 5:01 am and sunset at 8:58 pm. On the last day of the month, sunrise is at 5:32 am and sunset at 8:32 pm PDT.
Sunshine
In July, the average sunshine is 11.9h.UV index
The month with the highest UV index is July, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.Note: During July, 7 as the daily maximum UV index converts into the following advice:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Grand Coulee, WA
- Average high temperature in July: 84.9°F
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is December (31.6°F).
- Average low temperature in July: 59.7°F
The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is December (21.4°F).
Average pressure in July
Grand Coulee, WA
- Average pressure in July: 29.93"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in July
Grand Coulee, WA
- Average wind speed in July: 6mph
The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is January (4.9mph).
Average humidity in July
Grand Coulee, WA
- Average humidity in July: 37%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (36%).
Average rainfall in July
Grand Coulee, WA
- Average rainfall in July: 0.2"
The wettest months (with the highest rainfall) are May and December (1.18").
The driest months (with the least rainfall) are July and August (0.2").
Average rainfall days in July
Grand Coulee, WA
- Average rainfall days in July: 4.2 days
The month with the highest number of rainy days is March (12.1 days).
The month with the least rainy days is August (3.2 days).
Average snowfall in July
Grand Coulee, WA
- Average snowfall in July: 0"
The month with the highest snowfall is January (4.41").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days in July
Grand Coulee, WA
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is December (10.5 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in July /
Average sunshine in July
Grand Coulee, WA
- Average daylight in July: 15h and 36min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in July: 11h and 54min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in July
Grand Coulee, WA
- Average sunshine days in July: 25.5 days
The month with the most sunshine days is August (25.8 days).
The month with the least sunshine days is March (14.7 days).
Average UV index in July
Grand Coulee, WA
- Average UV index in July: 7
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in July
Grand Coulee, WA
- Average cloud cover in July: 12
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in July
Grand Coulee, WA
- Average visibility in July: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (4mi).
