Climate and monthly weather forecast
Thompsonville, IL

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Weather in January

January, like December, in Thompsonville, Illinois, is a wintry winter month, with an average temperature ranging between max 39°F (3.9°C) and min 26.1°F (-3.3°C). January, with its average high-temperature of 39°F (3.9°C) and an average low-temperature of 26.1°F (-3.3°C), holds the record as the coldest month. Weather in January »

Weather in February

February, the last month of the winter in Thompsonville, is a chilly month, with an average temperature varying between 43.7°F (6.5°C) and 29.7°F (-1.3°C). The initiation of February sees an average high-temperature of a chilly 43.7°F (6.5°C), showing minor variations from the previous month. Weather in February »

Weather in March

The first month of the spring, March, is a cool month in Thompsonville, Illinois, with an average temperature varying between 55.2°F (12.9°C) and 39.2°F (4°C). Observing a rise in March, the average high-temperature goes from February's chilly 43.7°F (6.5°C) to a cool 55.2°F (12.9°C). Weather in March »

Weather in April

April in Thompsonville, Illinois, is a comfortable spring month, with temperature in the range of an average high of 66.4°F (19.1°C) and an average low of 48.7°F (9.3°C). The start of April signals an increase in the average high-temperature, moving from a fresh 55.2°F (12.9°C) in March to a refreshing 66.4°F (19.1°C). Weather in April »

Weather in May

The last month of the spring, May, is a warm month in Thompsonville, Illinois, with an average temperature varying between 58.1°F (14.5°C) and 75.6°F (24.2°C). With the beginning of May, Thompsonville's average high-temperature sees an increase, transitioning from an enjoyable 66.4°F (19.1°C) in April to a moderately hot 75.6°F (24.2°C). Weather in May »

Weather in June

The first month of the summer, June, is still a warm month in Thompsonville, Illinois, with an average temperature ranging between min 66.6°F (19.2°C) and max 84.6°F (29.2°C). Thompsonville's transition into June is marked by a temperature shift, moving from 75.6°F (24.2°C) in May to a still moderately hot 84.6°F (29.2°C). Weather in June »

Weather in July

July in Thompsonville, Illinois, is a hot summer month, with an average temperature ranging between max 87.3°F (30.7°C) and min 68.5°F (20.3°C). July, on average, is the warmest month, registering a high temperature of 87.3°F (30.7°C) and a low of 68.5°F (20.3°C). In July, the average heat index is evaluated at a sweltering 102.2°F (39°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Thompsonville, Illinois, with an average temperature varying between 85.5°F (29.7°C) and 66.4°F (19.1°C). August's onset records a minor alteration in the average high-temperature to a moderately hot 85.5°F (29.7°C) from July's 87.3°F (30.7°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Thompsonville, Illinois, with an average temperature ranging between min 60.4°F (15.8°C) and max 80.1°F (26.7°C). The arrival of September correlates with a minor temperature reduction, down from August's 85.5°F (29.7°C) to a still moderately hot 80.1°F (26.7°C). Weather in September »

Weather in October

October, the same as September, is another comfortable autumn month in Thompsonville, Illinois, with an average temperature ranging between max 67.3°F (19.6°C) and min 49.6°F (9.8°C). October's onset corresponds with a shift in the average high-temperature, moving from a moderately hot 80.1°F (26.7°C) in September to a refreshing 67.3°F (19.6°C). Weather in October »

Weather in November

The last month of the autumn, November, is another cool month in Thompsonville, Illinois, with an average temperature varying between 53.8°F (12.1°C) and 38.5°F (3.6°C). Transition into November marks a drop in the average high-temperature, moving from a comfortable 67.3°F (19.6°C) in October to a cool 53.8°F (12.1°C). Weather in November »

Weather in December

December, the first month of the winter in Thompsonville, is also a frosty month, with temperature in the range of an average high of 43.7°F (6.5°C) and an average low of 31.5°F (-0.3°C). The shift from November to December involves a decrease in the average high-temperature, dropping from a cool 53.8°F (12.1°C) to a chilly 43.7°F (6.5°C). Weather in December »
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the coldest in Thompsonville?

January, with average temperatures reaching a high of 39°F (3.9°C) and a low of 26.1°F (-3.3°C), is the coldest month in Thompsonville, Illinois.

How much does it rain in Thompsonville?

Throughout the year, in Thompsonville, there are 167.2 rainfall days, and 37.68" (957mm) of precipitation is accumulated.

When does it snow in Thompsonville?

January through April, October through December are months with snowfall.

How much does it snow in Thompsonville?

Throughout the year, in Thompsonville, there are 19.8 snowfall days, and 6.57" (167mm) of snow is accumulated.

What is the month with the least sunshine in Thompsonville?

January has the least sunshine of the year, with an average of 4.6h of sunshine.

What are the months with the lowest UV index in Thompsonville?

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the snowiest month in Thompsonville?

February is the month with the most snowfall. Snow falls for 5.2 days and accumulates 1.93" (49mm) of snow.

When is Daylight Saving Time (DST) in Thompsonville?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Thompsonville, Illinois, 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 wettest month in Thompsonville?

April is the month with the most rainfall. Rain falls for 16.6 days and accumulates 4.92" (125mm) of precipitation.

What is the most humid month in Thompsonville?

With an average relative humidity of 79%, May is the most humid month in Thompsonville, Illinois.

When it does not snow in Thompsonville?

May through September are months without snowfall in Thompsonville, Illinois.

When is the highest UV index in Thompsonville?

The months with the highest UV index in Thompsonville, Illinois, are May through August, with an average maximum UV index of 6.

When are the longest days in Thompsonville?

With an average of 14h and 48min of daylight, June has the longest days of the year.

What is the month with the most sunshine in Thompsonville?

The months with the most sunshine in Thompsonville are June and July, with an average of 10.5h of sunshine.

What is the hottest time of year in Thompsonville?

July, having an average high-temperature of 87.3°F (30.7°C) and an average low-temperature of 68.5°F (20.3°C), is the warmest month.

What is the driest month in Thompsonville?

September is the month with the least rainfall in Thompsonville, Illinois. Rain falls for 13.4 days and accumulates 1.97" (50mm) of precipitation.

What is the least humid month in Thompsonville?

With an average relative humidity of 70%, October is the least humid month in Thompsonville, Illinois.

What is the month with the shortest days in Thompsonville?

With an average of 9h and 36min of daylight, December has the shortest days of the year in Thompsonville, Illinois.

Average temperature
Thompsonville, IL

Average temperature - Thompsonville, IL

The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (39°F).

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).

Average pressure
Thompsonville, IL

Average pressure - Thompsonville, IL

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed
Thompsonville, IL

Average wind speed - Thompsonville, IL

The windiest months (with the highest average wind speed) are January and February (9.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

Average humidity
Thompsonville, IL

Average humidity - Thompsonville, IL

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (70%).

Average rainfall
Thompsonville, IL

Average rainfall - Thompsonville, IL

The wettest month (with the highest rainfall) is April (4.92").
The driest month (with the least rainfall) is September (1.97").

Average rainfall days
Thompsonville, IL

Average rainfall days - Thompsonville, IL

The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is January (9.7 days).

Average snowfall
Thompsonville, IL

Average snowfall - Thompsonville, IL

The month with the highest snowfall is February (1.93").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days
Thompsonville, IL

Average snowfall days - Thompsonville, IL

The month with the highest number of snowfall days is January (6.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight / Average sunshine
Thompsonville, IL

Average daylight / Average sunshine - Thompsonville, IL

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 36min).

The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

Average sunshine days
Thompsonville, IL

Average sunshine days - Thompsonville, IL

The month with the most sunshine days is October (17.6 days).
The month with the least sunshine days is June (9.9 days).

Average UV index
Thompsonville, IL

Average UV index - Thompsonville, 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 and December (UV index 2).

Average visibility
Thompsonville, IL

Average visibility - Thompsonville, 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).

Thompsonville, Illinois, USA

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