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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, the same as December, is a wintry winter month in Mascoutah, Illinois, with an average temperature varying between 37.8°F (3.2°C) and 24.8°F (-4°C). January is the coldest month, exhibiting average temperatures of 37.8°F (3.2°C) at the peak and 24.8°F (-4°C) at the base. Weather in January »
Weather in February
February, the last month of the winter in Mascoutah, is also a wintry month, with an average temperature fluctuating between 42.3°F (5.7°C) and 27.9°F (-2.3°C). The beginning of February reveals an average high-temperature of a still icy 42.3°F (5.7°C), showing minimal deviation from the previous month. Weather in February »
Weather in March
March, the first month of the spring in Mascoutah, is a cool month, with an average temperature varying between 54.5°F (12.5°C) and 37.9°F (3.3°C). The start of March signals an increase in the average high-temperature, moving from a cold 42.3°F (5.7°C) in February to a cool 54.5°F (12.5°C). Weather in March »
Weather in April
April is an enjoyable spring month in Mascoutah, Illinois, with temperature in the range of an average high of 65.1°F (18.4°C) and an average low of 47.8°F (8.8°C). In April, the meteorological conditions change with the average high-temperature moving from a fresh 54.5°F (12.5°C) in March to an enjoyable 65.1°F (18.4°C). Weather in April »
Weather in May
May, the last month of the spring in Mascoutah, is a warm month, with an average temperature fluctuating between 57.7°F (14.3°C) and 74.8°F (23.8°C). May's onset brings a temperature rise, moving from a comfortable 65.1°F (18.4°C) in April to a moderately hot 74.8°F (23.8°C). Weather in May »
Weather in June
The first month of the summer, June, is also a moderately hot month in Mascoutah, Illinois, with an average temperature fluctuating between 83.7°F (28.7°C) and 66.6°F (19.2°C). Mascoutah's transition into June is marked by a minor temperature shift, moving from 74.8°F (23.8°C) in May to a still moderately hot 83.7°F (28.7°C). Weather in June »
Weather in July
July, like June, in Mascoutah, Illinois, is a moderately hot summer month, with an average temperature varying between 85.6°F (29.8°C) and 68°F (20°C). In Mascoutah, July is the month with the highest recorded average temperatures, measuring a high of 85.6°F (29.8°C) and a low of 68°F (20°C). The heat index for July is calculated to be a fiery hot 98.6°F (37°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Mascoutah, Illinois, with an average temperature varying between 84.2°F (29°C) and 65.8°F (18.8°C). August's commencement is accompanied by an average high-temperature of a still warm 84.2°F (29°C), diverging marginally from July's 85.6°F (29.8°C). Weather in August »
Weather in September
September, the first month of the autumn in Mascoutah, is also a moderately hot month, with an average temperature fluctuating between 79.2°F (26.2°C) and 59.9°F (15.5°C). Mascoutah experiences a subtle adjustment in high-temperatures to a still moderately hot 79.2°F (26.2°C) with the onset of September, maintaining near parity with August's 84.2°F (29°C). Weather in September »
Weather in October
October, the same as September, is another refreshing autumn month in Mascoutah, Illinois, with an average temperature fluctuating between 48.9°F (9.4°C) and 66.4°F (19.1°C). The arrival of October corresponds with a shift in temperature, down from a moderately hot 79.2°F (26.2°C) in September to a refreshing 66.4°F (19.1°C). Weather in October »
Weather in November
November, the last month of the autumn in Mascoutah, is another cool month, with an average temperature ranging between min 37.8°F (3.2°C) and max 53.2°F (11.8°C). With November's arrival, Mascoutah's weather changes as the average high-temperature falls from an enjoyable 66.4°F (19.1°C) in October to a cool 53.2°F (11.8°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in Mascoutah, Illinois, with an average temperature fluctuating between 30.2°F (-1°C) and 42.4°F (5.8°C). During Mascoutah's transition into December, the average high-temperature lessens, moving from a fresh 53.2°F (11.8°C) in November to a wintry 42.4°F (5.8°C). Weather in December »
Updated: Aug 9, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
Mascoutah notes the coldest temperatures in January, with a average high of 37.8°F (3.2°C) and a low of 24.8°F (-4°C).
How much does it rain?
In Mascoutah, Illinois, during the entire year, the rain falls for 110.1 days and collects up to 11.1" (282mm) of precipitation.
When does it snow?
January through March, November and December are months with snowfall.
When does it snow the most?
The month with the most snowfall is January, when snow falls for 4.7 days and typically aggregates up to 0.51" (13mm) of snow.
How much does it snow in Mascoutah?
In Mascoutah, Illinois, during the entire year, snow falls for 13.8 days and aggregates up to 1.38" (35mm) of snow.
What is the month with the least sunshine?
The month with the least sunshine is January, with an average of 4.5h of sunshine.
What is the month with the lowest UV index?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
What is the driest month?
February is the month with the least rainfall. Rain falls for 5.3 days and accumulates 0.47" (12mm) of precipitation.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
When it does not snow?
In Mascoutah, snow does not fall in April through October.
What are the most humid months?
The months with the highest humidity are May, July and August, with an average relative humidity of 79%.
What is the wettest month?
The month with the most rainfall is May, when the rain falls for 12.7 days and typically aggregates up to 1.5" (38mm) of precipitation.
What are the months with the highest UV index?
May through August, with an average maximum UV index of 6, are months with the highest UV index.
When are the longest days?
The month with the longest days is June, with an average of 14h and 48min of daylight.
What are the months with the most sunshine?
The months with the most sunshine are June and July, with an average of 10.4h of sunshine.
What are the warmest months in Mascoutah?
With average high temperatures of 85.6°F (29.8°C) and lows of 68°F (20°C), July is the warmest month in Mascoutah.
What is the least humid month in Mascoutah?
With an average relative humidity of 70%, October is the least humid month.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 30min of daylight.
Average temperature
Mascoutah, IL
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37.8°F).
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure
Mascoutah, IL
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.94"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Mascoutah, IL
- Average wind speed in January:
9.5mph - Average wind speed in February:
9.4mph - Average wind speed in March:
9.3mph - Average wind speed in April:
9.1mph - Average wind speed in May:
7.5mph - Average wind speed in June:
6.6mph
- Average wind speed in July:
5.6mph - Average wind speed in August:
5.7mph - Average wind speed in September:
6.2mph - Average wind speed in October:
8mph - Average wind speed in November:
8.6mph - Average wind speed in December:
8.8mph
The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).
Average humidity
Mascoutah, IL
The months with the highest relative humidity are May, July and August (79%).
The month with the lowest relative humidity is October (70%).
Average rainfall
Mascoutah, IL
- Average rainfall in January:
0.71" - Average rainfall in February:
0.47" - Average rainfall in March:
0.71" - Average rainfall in April:
1.1" - Average rainfall in May:
1.5" - Average rainfall in June:
1.14"
- Average rainfall in July:
1.34" - Average rainfall in August:
1.26" - Average rainfall in September:
0.63" - Average rainfall in October:
1.02" - Average rainfall in November:
0.59" - Average rainfall in December:
0.63"
The wettest month (with the highest rainfall) is May (1.5").
The driest month (with the least rainfall) is February (0.47").
Average rainfall days
Mascoutah, IL
- Average rainfall days in January:
4.8 days - Average rainfall days in February:
5.3 days - Average rainfall days in March:
9.7 days - Average rainfall days in April:
12.3 days - Average rainfall days in May:
12.7 days - Average rainfall days in June:
10.9 days
- Average rainfall days in July:
13.2 days - Average rainfall days in August:
11 days - Average rainfall days in September:
9.6 days - Average rainfall days in October:
8.4 days - Average rainfall days in November:
6.9 days - Average rainfall days in December:
5.3 days
The month with the highest number of rainy days is July (13.2 days).
The month with the least rainy days is January (4.8 days).
Average snowfall
Mascoutah, IL
The month with the highest snowfall is January (0.51").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Mascoutah, IL
- Average snowfall days in January:
4.7 days - Average snowfall days in February:
4 days - Average snowfall days in March:
1.4 days - Average snowfall days in April:
0.1 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.7 days - Average snowfall days in December:
2.9 days
The month with the highest number of snowfall days is January (4.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Mascoutah, IL
- Average daylight in January:
9h and 5min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 2min - Average daylight in June:
14h and 5min
- Average daylight in July:
14h and 3min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 1min - Average daylight in December:
9h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January:
4h and 3min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 3min - Average sunshine in May:
9h and 2min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
10h and 1min - Average sunshine in September:
9h and 2min - Average sunshine in October:
6h and 2min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 4min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days
Mascoutah, IL
- Average sunshine days in January:
23.2 days - Average sunshine days in February:
19.6 days - Average sunshine days in March:
18.4 days - Average sunshine days in April:
16.2 days - Average sunshine days in May:
15.6 days - Average sunshine days in June:
16.5 days
- Average sunshine days in July:
15.4 days - Average sunshine days in August:
18 days - Average sunshine days in September:
18.5 days - Average sunshine days in October:
22 days - Average sunshine days in November:
21.9 days - Average sunshine days in December:
22.9 days
The month with the most sunshine days is January (23.2 days).
The month with the least sunshine days is July (15.4 days).
Average UV index
Mascoutah, IL
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Mascoutah, IL
The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are June and August (Cloud cover 28).
Average visibility
Mascoutah, IL
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Mascoutah, Illinois, USA
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