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 is the warmest month of the year, registering average temperatures as high as 81.7°F (27.6°C) and as low as 48.4°F (9.1°C).Heat index
July's heat index is computed to be 82.4°F (28°C). Exhaustion becomes probable with enduring exposure and activity, potentially causing heat cramps.Be informed that the heat index values are oriented around shady conditions and gentle breezes. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
Humidity
In Mount Vernon, the average relative humidity in July is 43%.Rainfall
July is the month with the least rainfall. Rain falls for 3.8 days and accumulates 0.24" (6mm) of precipitation.Snowfall
In Mount Vernon, snow does not fall in June through August.Daylight
The average length of the day in July in Mount Vernon is 15h and 8min.On the first day of the month, sunrise is at 5:16 am and sunset at 8:44 pm. On the last day of July, sunrise is at 5:43 am and sunset at 8:22 pm PDT.
Sunshine
In Mount Vernon, the average sunshine in July is 12h.UV index
The month with the highest UV index is July, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.Note: The daily high UV index of 6 during July translates into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the hottest?
What is the temperature in July?
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?
What is the average length of the day in July in Mount Vernon?
When is the sunrise / sunset in July?
How long on average sun shines in July?
What is the month with the highest UV index?
What is the UV index reading in July?
Average temperature in July
Mount Vernon, OR
- Average high temperature in July: 81.7°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is December (33.4°F).
- Average low temperature in July: 48.4°F
The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is December (19.6°F).
Average pressure in July
Mount Vernon, OR
- Average pressure in July: 29.95"Hg
The month with the highest atmospheric pressure is January (30.22"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).
Average wind speed in July
Mount Vernon, OR
- Average wind speed in July: 5.3mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest months (with the lowest average wind speed) are August and September (5mph).
Average humidity in July
Mount Vernon, OR
- Average humidity in July: 43%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is August (42%).
Average rainfall in July
Mount Vernon, OR
- Average rainfall in July: 0.24"
The wettest month (with the highest rainfall) is February (2.28").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in July
Mount Vernon, OR
- Average rainfall days in July: 3.8 days
The month with the highest number of rainy days is March (17.3 days).
The month with the least rainy days is August (3.3 days).
Average snowfall in July
Mount Vernon, OR
- Average snowfall in July: 0"
The month with the highest snowfall is February (10.31").
The months with the least snowfall are June, July and August (0").
Average snowfall days in July
Mount Vernon, OR
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is December (14.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in July /
Average sunshine in July
Mount Vernon, OR
- Average daylight in July: 15h and 1min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in July: 12h and 0min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The months with the least sunshine are January and February (Average sunshine: 5h and 12min).
Average sunshine days in July
Mount Vernon, OR
- Average sunshine days in July: 24.9 days
The month with the most sunshine days is July (24.9 days).
The month with the least sunshine days is February (9 days).
Average UV index in July
Mount Vernon, OR
- Average UV index in July: 6
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in July
Mount Vernon, OR
- Average cloud cover in July: 9
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 9).
Average visibility in July
Mount Vernon, OR
- Average visibility in July: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
Mount Vernon, Oregon, USA
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