Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average snowfall in July
- Average snowfall days in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
Weather in July
Temperature
July's arrival is noted with a slight increase in the average high-temperature, moving from a refreshing 66°F (18.9°C) in June to a warm 73.9°F (23.3°C). During July nights, Preston documents a marked contrast from daily highs, with an average temperature of 46.9°F (8.3°C).Humidity
With an average relative humidity of 71%, July is the least humid month.Rainfall
The months with the least rainfall are July and August Rain falls for 7.9 days and accumulates 0.59" (15mm) of rain.Snowfall
May through October are months without snowfall.Daylight
In Preston, the average length of the day in July is 15h and 31min.On the first day of July, sunrise is at 5:14 am and sunset at 9:08 pm. On the last day of the month, sunrise is at 5:45 am and sunset at 8:42 pm PDT.
Sunshine
In Preston, the average sunshine in July is 10.4h.UV index
The month with the highest UV index is July, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 5 in July converts into the following recommendations:
Preventative actions are necessary - Recommendations to ward off sunburn are given. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are July temperatures?
What is the least humid month?
What is the average humidity in July?
What is the driest month?
How many days does it rain in July?
When it does not snow?
How many hours of daylight does Preston have in July?
When are sunrise and sunset in July?
How many hours of sunshine does Preston have in July?
When is the highest UV index?
What is the UV index intensity in July?
Average temperature in July
Preston, WA
- Average high temperature in July: 73.9°F
The warmest month (with the highest average high temperature) is August (74.8°F).
The month with the lowest average high temperature is December (39.7°F).
- Average low temperature in July: 46.9°F
The month with the highest average low temperature is August (48.7°F).
The coldest month (with the lowest average low temperature) is December (29.8°F).
Average pressure in July
Preston, WA
- Average pressure in July: 30.02"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is August (29.99"Hg).
Average wind speed in July
Preston, WA
- Average wind speed in July: 3.4mph
The windiest month (with the highest average wind speed) is January (5.1mph).
The calmest month (with the lowest average wind speed) is August (3.3mph).
Average humidity in July
Preston, WA
- Average humidity in July: 71%
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is July (71%).
Average rainfall in July
Preston, WA
- Average rainfall in July: 0.59"
The wettest month (with the highest rainfall) is January (6.1").
The driest months (with the least rainfall) are July and August (0.59").
Average rainfall days in July
Preston, WA
- Average rainfall days in July: 7.9 days
The month with the highest number of rainy days is March (20.5 days).
The month with the least rainy days is August (6.4 days).
Average snowfall in July
Preston, WA
- Average snowfall in July: 0"
The month with the highest snowfall is February (3.94").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in July
Preston, WA
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is February (5.4 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
Preston, WA
- Average daylight in July: 15h and 3min
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 2min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are January and December (Average sunshine: 3h and 54min).
Average sunshine days in July
Preston, WA
- Average sunshine days in July: 20.3 days
The month with the most sunshine days is August (21.9 days).
The month with the least sunshine days is February (7.8 days).
Average UV index in July
Preston, WA
- Average UV index in July: 5
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in July
Preston, WA
- Average cloud cover in July: 30
The months with the most cloud cover are January, February, March and December (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in July
Preston, WA
- Average visibility in July: 5mi
The months with the highest visibility are May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, November and December (4mi).
Preston, Washington, USA
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