July weather forecastMattoon, WI
July
Weather in July
July in Mattoon, Wisconsin, is a moderately hot summer month, with an average temperature varying between 59°F (15°C) and 79.3°F (26.3°C).Temperature
The month of July, characterized by an average high of 79.3°F (26.3°C) and a low of 59°F (15°C), is recognized as the warmest.Humidity
In Mattoon, the average relative humidity in July is 78%.Rainfall
In July, the rain falls for 14.5 days. Throughout July, 2.4" (61mm) of precipitation is accumulated. In Mattoon, Wisconsin, during the entire year, the rain falls for 126.9 days and collects up to 23.03" (585mm) of precipitation.Snowfall
In Mattoon, snow does not fall in June through September.Daylight
In July, the average length of the day in Mattoon is 15h and 13min.On the first day of July, sunrise is at 5:13 am and sunset at 8:46 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 8:23 pm CDT.
Sunshine
July has the most sunshine of the year in Mattoon, with an average of 10.1h of sunshine.UV index
June through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The average daily UV index of 5 in July transforms into the following instructions:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Mattoon, WI
- Average high temperature in July: 79.3°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (22.3°F).
- Average low temperature in July: 59°F
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (11.5°F).
Average pressure in July
Mattoon, WI
- Average pressure in July: 29.95"Hg
The months with the highest atmospheric pressure are February and March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in July
Mattoon, WI
- Average wind speed in July: 6.9mph
The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).
Average humidity in July
Mattoon, WI
- Average humidity in July: 78%
The months with the highest relative humidity are January and February (88%).
The months with the lowest relative humidity are April and May (75%).
Average rainfall in July
Mattoon, WI
- Average rainfall in July: 2.4"
The wettest month (with the highest rainfall) is May (3.19").
The driest months (with the least rainfall) are January and February (1.02").
Average rainfall days in July
Mattoon, WI
- Average rainfall days in July: 14.5 days
The month with the highest number of rainy days is May (15.1 days).
The months with the least rainy days are January and February (4.3 days).
Average snowfall in July
Mattoon, WI
- Average snowfall in July: 0"
The month with the highest snowfall is January (5.28").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in July
Mattoon, WI
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (15.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Mattoon, WI
- Average daylight in July: 15h and 12min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in July: 10h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 30min).
Average sunshine days in July
Mattoon, WI
- Average sunshine days in July: 13.7 days
The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is April (12.7 days).
Average UV index in July
Mattoon, WI
- Average UV index in July: 5
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in July
Mattoon, WI
- Average cloud cover in July: 33
The months with the most cloud cover are January and February (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in July
Mattoon, WI
- Average visibility in July: 6mi
The months with the highest visibility are March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are January, February, August and September (5mi).





