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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, in Mannon, Illinois, is a freezing cold winter month, with an average temperature ranging between max 28.8°F (-1.8°C) and min 16.9°F (-8.4°C). January, characterized by an average high temperature of 28.8°F (-1.8°C) and a low temperature of 16.9°F (-8.4°C), is generally the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is a wintry month in Mannon, Illinois, with temperature in the range of an average low of 20.7°F (-6.3°C) and an average high of 33.6°F (0.9°C). Mannon transitions into February recording an average high-temperature of an icy 33.6°F (0.9°C), closely aligning with the preceding month's temperature. Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Mannon, Illinois, with an average temperature varying between 32.5°F (0.3°C) and 47.7°F (8.7°C). The commencement of March sees a shift in the average high-temperature, moving from a wintry 33.6°F (0.9°C) in February to a frosty 47.7°F (8.7°C). Weather in March »
Weather in April
April is a mild spring month in Mannon, Illinois, with an average temperature varying between 59.5°F (15.3°C) and 42.8°F (6°C). April's arrival signals an increase in average high-temperatures, moving from March's frosty 47.7°F (8.7°C) to a mild 59.5°F (15.3°C). Weather in April »
Weather in May
May, the last month of the spring in Mannon, is an agreeable month, with temperature in the range of an average low of 53.8°F (12.1°C) and an average high of 70.7°F (21.5°C). Mannon in May sees a temperature change, with average high-temperatures moving from a refreshing 59.5°F (15.3°C) in April to an agreeable 70.7°F (21.5°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Mannon, Illinois, with an average temperature fluctuating between 79.2°F (26.2°C) and 62.2°F (16.8°C). In Mannon, stepping into June brings a gentle temperature nudge, moving slightly up from May's pleasant 70.7°F (21.5°C) to a moderately hot 79.2°F (26.2°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Mannon, Illinois, with an average temperature ranging between min 64.9°F (18.3°C) and max 81.5°F (27.5°C). July, characterized by an average high temperature of 81.5°F (27.5°C) and a low temperature of 64.9°F (18.3°C), is generally the warmest month. The heat index in July is estimated at a tropical 87.8°F (31°C). Weather in July »
Weather in August
August, the last month of the summer in Mannon, is also a moderately hot month, with an average temperature ranging between min 63.1°F (17.3°C) and max 81°F (27.2°C). The initiation of August sees an average high-temperature of a still moderately hot 81°F (27.2°C), showing minor variations from the previous month. Weather in August »
Weather in September
September, the first month of the autumn in Mannon, is also a moderately hot month, with an average temperature varying between 75.4°F (24.1°C) and 56.3°F (13.5°C). Mannon's weather in September involves a mild decrease in the average high-temperature, moving down slightly from August's 81°F (27.2°C) to a still warm 75.4°F (24.1°C). Weather in September »
Weather in October
October, like September, in Mannon, Illinois, is another comfortable autumn month, with an average temperature ranging between max 61.7°F (16.5°C) and min 45.5°F (7.5°C). The start of October signals a decrease in the average high-temperature, transitioning from a warm 75.4°F (24.1°C) in September to a refreshing 61.7°F (16.5°C). Weather in October »
Weather in November
November, the last month of the autumn in Mannon, is another chilly month, with an average temperature fluctuating between 47.3°F (8.5°C) and 33.8°F (1°C). November marks a distinct drop in the average high-temperature, descending from October's comfortable 61.7°F (16.5°C) to a chilly 47.3°F (8.5°C). Weather in November »
Weather in December
The first month of the winter, December, is still a cold month in Mannon, Illinois, with an average temperature ranging between min 24.4°F (-4.2°C) and max 35.1°F (1.7°C). The decrease of average high-temperatures is mild in December, with a decline from a chilly 47.3°F (8.5°C) in November to a wintry 35.1°F (1.7°C). Weather in December »
Updated: Feb 12, 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 in Mannon?
Mannon's January weather, with an average high temperature of 28.8°F (-1.8°C) and an average low temperature of 16.9°F (-8.4°C), tends to be the coldest of the year.
How many days does it rain in Mannon?
In Mannon, Illinois, during the entire year, the rain falls for 121.3 days and collects up to 17.72" (450mm) of precipitation.
When does it snow in Mannon?
Months with snowfall are January through April, October through December.
What is the snowiest month in Mannon?
The month with the most snowfall in Mannon, Illinois, is January, when snow falls for 7.8 days and typically aggregates up to 2.4" (61mm) of snow.
How many days does it snow in Mannon?
In Mannon, Illinois, during the entire year, snow falls for 26.3 days and aggregates up to 7.64" (194mm) of snow.
What is the month with the least sunshine in Mannon?
January has the least sunshine of the year, with an average of 4.2h of sunshine.
What is the month with the lowest UV index in Mannon?
The month with the lowest UV index is January, with an average maximum UV index of 1.
When is Daylight Saving Time (DST) in Mannon?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Mannon, 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.
What is the rainiest month in Mannon?
The month with the most rainfall is May, when the rain falls for 16.8 days and typically aggregates up to 2.76" (70mm) of precipitation.
When it does not snow in Mannon?
In Mannon, snow does not fall in May through September.
When are the longest days in Mannon?
June has the longest days of the year in Mannon, Illinois, with an average of 15h and 6min of daylight.
When is the highest UV index in Mannon?
The months with the highest UV index are June and July, with an average maximum UV index of 6.
What month is the hottest in Mannon?
July, on average, is the warmest month in Mannon, Illinois, registering a high temperature of 81.5°F (27.5°C) and a low of 64.9°F (18.3°C).
What is the most humid month in Mannon?
The most humid month in Mannon, Illinois, is July, with an average relative humidity of 84%.
What month has the most sunshine in Mannon?
The month with the most sunshine in Mannon, Illinois, is July, with an average of 10.3h of sunshine.
What is the least humid month in Mannon?
October is the least humid month in Mannon, with an average relative humidity of 71%.
What is the driest month in Mannon?
December is the month with the least rainfall in Mannon. Rain falls for 5.5 days and accumulates 0.67" (17mm) of precipitation.
What is the month with the shortest days in Mannon?
With an average of 9h and 18min of daylight, December has the shortest days of the year.
Average temperature
Mannon, IL
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (28.8°F).
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).
Average pressure
Mannon, IL
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.94"Hg - Average pressure in June:
29.9"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.11"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
Mannon, IL
- Average wind speed in January:
10.5mph - Average wind speed in February:
10.5mph - Average wind speed in March:
10.4mph - Average wind speed in April:
10.6mph - Average wind speed in May:
9mph - Average wind speed in June:
7.8mph
- Average wind speed in July:
6.8mph - Average wind speed in August:
6.8mph - Average wind speed in September:
7.8mph - Average wind speed in October:
9.5mph - Average wind speed in November:
10.3mph - Average wind speed in December:
9.9mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity
Mannon, IL
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Mannon, IL
- Average rainfall in January:
0.79" - Average rainfall in February:
0.79" - Average rainfall in March:
1.26" - Average rainfall in April:
1.93" - Average rainfall in May:
2.76" - Average rainfall in June:
2.24"
- Average rainfall in July:
2.13" - Average rainfall in August:
1.18" - Average rainfall in September:
1.46" - Average rainfall in October:
1.38" - Average rainfall in November:
1.14" - Average rainfall in December:
0.67"
The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is December (0.67").
Average rainfall days
Mannon, IL
- Average rainfall days in January:
4.1 days - Average rainfall days in February:
4.3 days - Average rainfall days in March:
10.4 days - Average rainfall days in April:
13.6 days - Average rainfall days in May:
16.8 days - Average rainfall days in June:
15.3 days
- Average rainfall days in July:
13.4 days - Average rainfall days in August:
10.6 days - Average rainfall days in September:
9.7 days - Average rainfall days in October:
10.1 days - Average rainfall days in November:
7.5 days - Average rainfall days in December:
5.5 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (4.1 days).
Average snowfall
Mannon, IL
The month with the highest snowfall is January (2.4").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Mannon, IL
- Average snowfall days in January:
7.8 days - Average snowfall days in February:
6.2 days - Average snowfall days in March:
3.6 days - Average snowfall days in April:
0.6 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:
0.4 days - Average snowfall days in November:
1.6 days - Average snowfall days in December:
6.1 days
The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Mannon, IL
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 3min - Average daylight in June:
15h and 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
4h and 1min - Average sunshine in February:
4h and 2min - Average sunshine in March:
6h and 4min - Average sunshine in April:
8h and 0min - Average sunshine in May:
8h and 5min - Average sunshine in June:
10h and 1min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
10h and 0min - Average sunshine in September:
9h and 3min - Average sunshine in October:
5h and 3min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days
Mannon, IL
- Average sunshine days in January:
20.3 days - Average sunshine days in February:
18.3 days - Average sunshine days in March:
16.8 days - Average sunshine days in April:
15.8 days - Average sunshine days in May:
12.1 days - Average sunshine days in June:
12.5 days
- Average sunshine days in July:
14.9 days - Average sunshine days in August:
17.6 days - Average sunshine days in September:
19 days - Average sunshine days in October:
19.6 days - Average sunshine days in November:
19.6 days - Average sunshine days in December:
20.2 days
The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is May (12.1 days).
Average UV index
Mannon, IL
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover
Mannon, IL
The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 29).
Average visibility
Mannon, IL
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).
Mannon, Illinois, USA
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