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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 Flossmoor, Illinois, is another subzero cold winter month, with an average temperature varying between 29.7°F (-1.3°C) and 18.9°F (-7.3°C). Temperature readings reach their annual highs in January, averaging 29.7°F (-1.3°C) and a minimum average of 18.9°F (-7.3°C). Weather in January »
Weather in February
The last month of the winter, February, is a wintry month in Flossmoor, Illinois, with an average temperature fluctuating between 33.1°F (0.6°C) and 21.2°F (-6°C). Flossmoor, Illinois, marks the onset of February with an average high-temperature of a wintry 33.1°F (0.6°C), subtly divergent from January's 29.7°F (-1.3°C). Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Flossmoor, Illinois, with an average temperature fluctuating between 32.4°F (0.2°C) and 45.5°F (7.5°C). Observing a rise in March, the average high-temperature goes from February's cold 33.1°F (0.6°C) to a frosty 45.5°F (7.5°C). Weather in March »
Weather in April
April in Flossmoor, Illinois, is a moderate spring month, with temperature in the range of an average low of 41.7°F (5.4°C) and an average high of 56.7°F (13.7°C). April brings a rise in Flossmoor's average high-temperature, moving from a frosty 45.5°F (7.5°C) in March to a moderate 56.7°F (13.7°C). Weather in April »
Weather in May
May, the last month of the spring in Flossmoor, is a pleasant month, with an average temperature fluctuating between 68.7°F (20.4°C) and 52.3°F (11.3°C). As Flossmoor transitions into May, the average high-temperature shows a change, moving from a mild 56.7°F (13.7°C) in April to a pleasant 68.7°F (20.4°C). Weather in May »
Weather in June
June, the first month of the summer in Flossmoor, is a moderately hot month, with an average temperature ranging between max 77.7°F (25.4°C) and min 61.7°F (16.5°C). Flossmoor experiences a temperature shift with the start of June, with average high-temperatures moving from an agreeable 68.7°F (20.4°C) in May to a warm 77.7°F (25.4°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Flossmoor, Illinois, with temperature in the range of an average high of 81.3°F (27.4°C) and an average low of 65.8°F (18.8°C). During the warmest month, July, temperatures average a high of 81.3°F (27.4°C) and a low of 65.8°F (18.8°C). In July, the average heat index is evaluated at a tropical 87.8°F (31°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Flossmoor, Illinois, with an average temperature ranging between max 80.1°F (26.7°C) and min 64.6°F (18.1°C). The onset of August manifests an average high-temperature of a still warm 80.1°F (26.7°C), demonstrating a minor variation from the preceding month. Weather in August »
Weather in September
September, the first month of the autumn in Flossmoor, is still a warm month, with an average temperature fluctuating between 58.3°F (14.6°C) and 73.9°F (23.3°C). Flossmoor's progression into September involves a gentle drop in the average high-temperature, from 80.1°F (26.7°C) in August to a still warm 73.9°F (23.3°C). Weather in September »
Weather in October
October, the same as September, is another refreshing autumn month in Flossmoor, Illinois, with temperature in the range of an average high of 61.2°F (16.2°C) and an average low of 46.9°F (8.3°C). October indicates a shift in the average high-temperature, from September's moderately hot 73.9°F (23.3°C) to an enjoyable 61.2°F (16.2°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Flossmoor, Illinois, with an average temperature ranging between max 46.9°F (8.3°C) and min 34.9°F (1.6°C). The onset of November results in a decrease in the average high-temperature, receding from an enjoyable 61.2°F (16.2°C) in October to a chilly 46.9°F (8.3°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in Flossmoor, Illinois, with temperature in the range of an average high of 35.6°F (2°C) and an average low of 25.9°F (-3.4°C). December's onset brings a reduction in the average high-temperature, from a chilly 46.9°F (8.3°C) in November to a wintry 35.6°F (2°C). Weather in December »
[Resources]Frequently asked questions
What part of the year is the coldest in Flossmoor?
The coldest temperatures occur during January, when averages reach a peak of 29.7°F (-1.3°C) and a low of 18.9°F (-7.3°C).
What are the most humid months in Flossmoor?
January and February, with an average relative humidity of 82%, are most humid months.
How much does it rain in Flossmoor?
In Flossmoor, Illinois, during the entire year, the rain falls for 155.6 days and collects up to 31.3" (795mm) of precipitation.
When does it snow in Flossmoor?
Months with snowfall are January through April, October through December.
When does it snow the most in Flossmoor?
The month with the most snowfall in Flossmoor is January, when snow falls for 12.6 days and typically aggregates up to 4.53" (115mm) of snow.
How much does it snow in Flossmoor?
In Flossmoor, Illinois, during the entire year, snow falls for 44.6 days and aggregates up to 16.46" (418mm) of snow.
What is the month with the least sunshine in Flossmoor?
The month with the least sunshine is January, with an average of 3.6h of sunshine.
When is Daylight Saving Time (DST) in Flossmoor?
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.
What is the rainiest month in Flossmoor?
The month with the most rainfall is May, when the rain falls for 17.4 days and typically aggregates up to 4.17" (106mm) of precipitation.
When it does not snow in Flossmoor?
In Flossmoor, snow does not fall in May through September.
When are the longest days in Flossmoor?
With an average of 15h and 6min of daylight, June has the longest days of the year in Flossmoor, Illinois.
What is the month with the highest UV index in Flossmoor?
The months with the highest UV index are June and July, with an average maximum UV index of 6.
What time of the year is the hottest in Flossmoor?
The warmest temperatures occur during July, when averages reach a peak of 81.3°F (27.4°C) and a low of 65.8°F (18.8°C).
What month has the most sunshine in Flossmoor?
The month with the most sunshine in Flossmoor, Illinois, is August, with an average of 10.1h of sunshine.
What is the least humid month in Flossmoor?
With an average relative humidity of 73%, October is the least humid month.
What is the driest month in Flossmoor?
December is the month with the least rainfall. Rain falls for 7.9 days and accumulates 1.54" (39mm) of precipitation.
What is the month with the shortest days in Flossmoor?
December has the shortest days of the year, with an average of 9h and 12min of daylight.
What is the month with the lowest UV index in Flossmoor?
With an average maximum UV index of 1, December is the month with the lowest UV index.
Average temperature
Flossmoor, IL
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (29.7°F).
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure
Flossmoor, IL
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.95"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:
30.03"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Flossmoor, IL
- Average wind speed in January:
10.2mph - Average wind speed in February:
9.9mph - Average wind speed in March:
9.5mph - Average wind speed in April:
9.8mph - Average wind speed in May:
8.3mph - Average wind speed in June:
7.4mph
- Average wind speed in July:
6.4mph - Average wind speed in August:
6.3mph - Average wind speed in September:
7.3mph - Average wind speed in October:
9.1mph - Average wind speed in November:
9.8mph - Average wind speed in December:
9.5mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity
Flossmoor, IL
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall
Flossmoor, IL
- Average rainfall in January:
1.77" - Average rainfall in February:
1.69" - Average rainfall in March:
2.09" - Average rainfall in April:
3.43" - Average rainfall in May:
4.17" - Average rainfall in June:
3.82"
- Average rainfall in July:
3.31" - Average rainfall in August:
2.56" - Average rainfall in September:
2.48" - Average rainfall in October:
2.76" - Average rainfall in November:
1.69" - Average rainfall in December:
1.54"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is December (1.54").
Average rainfall days
Flossmoor, IL
- Average rainfall days in January:
6.8 days - Average rainfall days in February:
6.1 days - Average rainfall days in March:
12.7 days - Average rainfall days in April:
16.8 days - Average rainfall days in May:
17.4 days - Average rainfall days in June:
17.4 days
- Average rainfall days in July:
17.6 days - Average rainfall days in August:
14.8 days - Average rainfall days in September:
13.4 days - Average rainfall days in October:
14.3 days - Average rainfall days in November:
10.4 days - Average rainfall days in December:
7.9 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is February (6.1 days).
Average snowfall
Flossmoor, IL
The month with the highest snowfall is January (4.53").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Flossmoor, IL
- Average snowfall days in January:
12.6 days - Average snowfall days in February:
10.5 days - Average snowfall days in March:
6.1 days - Average snowfall days in April:
1.9 days - Average snowfall days in May:
0.1 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:
0.3 days - Average snowfall days in November:
4 days - Average snowfall days in December:
9.1 days
The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Flossmoor, 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 1min
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 12min).
- Average sunshine in January:
3h and 4min - Average sunshine in February:
3h and 5min - Average sunshine in March:
6h and 0min - Average sunshine in April:
7h and 4min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
10h and 1min - Average sunshine in September:
8h and 5min - Average sunshine in October:
5h and 5min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days
Flossmoor, IL
- Average sunshine days in January:
13 days - Average sunshine days in February:
11.8 days - Average sunshine days in March:
13.8 days - Average sunshine days in April:
10.2 days - Average sunshine days in May:
11.8 days - Average sunshine days in June:
10.4 days
- Average sunshine days in July:
11.1 days - Average sunshine days in August:
13.3 days - Average sunshine days in September:
14 days - Average sunshine days in October:
14.4 days - Average sunshine days in November:
16.4 days - Average sunshine days in December:
15 days
The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is April (10.2 days).
Average UV index
Flossmoor, IL
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Flossmoor, IL
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility
Flossmoor, IL
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Flossmoor, Illinois, USA
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