August weather forecastMonticello, WI
August
Weather in August
The last month of the summer, August, is also a moderately hot month in Monticello, Wisconsin, with temperature in the range of an average high of 77.5°F (25.3°C) and an average low of 59.7°F (15.4°C).Temperature
The average high-temperature is a still moderately hot 77.5°F (25.3°C) in August, hardly different from the 79°F (26.1°C) recorded in July. Monticello encounters a steady low-temperature average of 59.7°F (15.4°C) throughout the month of August.Humidity
In Monticello, the average relative humidity in August is 82%.Rainfall
In Monticello, in August, it is raining for 13.6 days, with typically 1.38" (35mm) of accumulated precipitation. In Monticello, during the entire year, the rain falls for 124.7 days and collects up to 15.16" (385mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Monticello, the average length of the day in August is 13h and 52min.On the first day of the month, sunrise is at 5:50 am and sunset at 8:18 pm. On the last day of August, in Monticello, sunrise is at 6:22 am and sunset at 7:34 pm CDT.
Sunshine
In Monticello, the average sunshine in August is 9.7h.UV index
The average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The daily high UV index of 5 in August translates into this advice:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Monticello, WI
- Average high temperature in August: 77.5°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (24.4°F).
- Average low temperature in August: 59.7°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).
Average pressure in August
Monticello, WI
- Average pressure in August: 29.97"Hg
The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in August
Monticello, WI
- Average wind speed in August: 6.6mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in August
Monticello, WI
- Average humidity in August: 82%
The month with the highest relative humidity is January (89%).
The months with the lowest relative humidity are April and October (77%).
Average rainfall in August
Monticello, WI
- Average rainfall in August: 1.38"
The wettest month (with the highest rainfall) is June (2.32").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in August
Monticello, WI
- Average rainfall days in August: 13.6 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (3.5 days).
Average snowfall in August
Monticello, WI
- Average snowfall in August: 0"
The months with the highest snowfall are January and February (2.52").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Monticello, WI
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (13 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Monticello, WI
- Average daylight in August: 13h and 54min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in August: 9h and 42min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in August
Monticello, WI
- Average sunshine days in August: 15.4 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in August
Monticello, WI
- Average UV index in August: 5
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in August
Monticello, WI
- Average cloud cover in August: 34
The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are August and September (Cloud cover 34).
Average visibility in August
Monticello, WI
- Average visibility in August: 5mi
The months with the highest visibility are February, March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, July, August and September (5mi).
