Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
With August's arrival, Mount Vernon's weather records an average high-temperature of a still warm 79.3°F (26.3°C), marking little difference from July's 80.2°F (26.8°C). Mount Vernon, during August, witnesses an average low-temperature of 61.7°F (16.5°C).Humidity
In August, the average relative humidity in Mount Vernon, Iowa, is 80%.Rainfall
In Mount Vernon, during August, the rain falls for 14 days and regularly aggregates up to 2.09" (53mm) of precipitation. Throughout the year, there are 147.9 rainfall days, and 31.57" (802mm) of precipitation is accumulated.Snowfall
In Mount Vernon, snow does not fall in May through September.Daylight
In August, the average length of the day in Mount Vernon, Iowa, is 13h and 49min.On the first day of August, sunrise is at 6:00 am and sunset at 8:23 pm. On the last day of the month, sunrise is at 6:31 am and sunset at 7:40 pm CDT.
Sunshine
July and August, with an average of 9.8h of sunshine, are months with the most sunshine in Mount Vernon.UV index
The average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: A daily maximum UV index of 5 in August translates into the following instructions:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Frequently asked questions
What are August temperatures in Mount Vernon?
What is the average humidity in August in Mount Vernon?
How much does it rain in Mount Vernon in August?
When it does not snow in Mount Vernon?
How many hours of daylight does Mount Vernon have in August?
When is the sunrise / sunset in August in Mount Vernon?
What are the months with the most sunshine in Mount Vernon?
How long on average sun shines in August in Mount Vernon?
What is the UV index intensity in August in Mount Vernon?
Average temperature in August
Mount Vernon, IA
- Average high temperature in August: 79.3°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 August: 61.7°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 August
Mount Vernon, IA
- Average pressure in August: 29.97"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 August
Mount Vernon, IA
- Average wind speed in August: 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 August
Mount Vernon, IA
- Average humidity in August: 80%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (73%).
Average rainfall in August
Mount Vernon, IA
- Average rainfall in August: 2.09"
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 August
Mount Vernon, IA
- Average rainfall days in August: 14 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 August
Mount Vernon, IA
- Average snowfall in August: 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 August
Mount Vernon, IA
- Average snowfall days in August: 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 August /
Average sunshine in August
Mount Vernon, IA
- Average daylight in August: 13h 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 August: 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 August
Mount Vernon, IA
- Average sunshine days in August: 13.8 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 August
Mount Vernon, IA
- Average UV index in August: 5
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 August
Mount Vernon, IA
- Average cloud cover in August: 31
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 August
Mount Vernon, IA
- Average visibility in August: 6mi
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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