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
Mount Vernon reaches its highest average temperatures in July, measuring 80.2°F (26.8°C) at the peak and 64.4°F (18°C) at the lowest.Humidity
In Mount Vernon, the average relative humidity in July is 84%.Rainfall
In July, the rain falls for 17.6 days. Throughout July, 3.31" (84mm) of precipitation is accumulated. In Mount Vernon, during the entire year, the rain falls for 147.9 days and collects up to 31.57" (802mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In Mount Vernon, the average length of the day in July is 14h and 52min.On the first day of July, sunrise is at 5:34 am and sunset at 8:44 pm. On the last day of the month, sunrise is at 5:59 am and sunset at 8:24 pm CDT.
Sunshine
The months with the most sunshine are July and August, with an average of 9.8h of sunshine.UV index
The month with the highest UV index in Mount Vernon is July, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 6 during July translates into the following directions:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the hottest?
What is the average July temperature?
What is the average humidity in July?
How much does it rain in July?
When it does not snow?
What is the average length of the day in July?
When are sunrise and sunset in July in Mount Vernon?
What is the month with the most sunshine?
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, IA
- Average high temperature in July: 80.2°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (26.2°F).
- Average low temperature in July: 64.4°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (14.2°F).
Average pressure in July
Mount Vernon, IA
- Average pressure in July: 29.96"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in July
Mount Vernon, IA
- Average wind speed in July: 7mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in July
Mount Vernon, IA
- Average humidity in July: 84%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (73%).
Average rainfall in July
Mount Vernon, IA
- Average rainfall in July: 3.31"
The wettest month (with the highest rainfall) is May (5").
The driest month (with the least rainfall) is January (1.34").
Average rainfall days in July
Mount Vernon, IA
- Average rainfall days in July: 17.6 days
The month with the highest number of rainy days is May (19 days).
The months with the least rainy days are January and February (5.2 days).
Average snowfall in July
Mount Vernon, IA
- Average snowfall in July: 0"
The month with the highest snowfall is January (5.79").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in July
Mount Vernon, IA
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (12.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Mount Vernon, IA
- Average daylight in July: 14h and 5min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in July: 9h and 5min
The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in July
Mount Vernon, IA
- Average sunshine days in July: 9.6 days
The month with the most sunshine days is November (17 days).
The month with the least sunshine days is June (8.1 days).
Average UV index in July
Mount Vernon, IA
- Average UV index in July: 6
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in July
Mount Vernon, IA
- Average cloud cover in July: 33
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are August and September (Cloud cover 31).
Average visibility in July
Mount Vernon, IA
- Average visibility in July: 5mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Mount Vernon, Iowa, USA
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