Climate and monthly weather forecast
Prairie Grove, IL

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Weather in January

January, like December, is another subzero cold winter month in Prairie Grove, Illinois, with an average temperature ranging between max 27°F (-2.8°C) and min 15.1°F (-9.4°C). The month of January sees the lowest average temperatures, reaching 27°F (-2.8°C) at the peak and 15.1°F (-9.4°C) at the low. Weather in January »

Weather in February

The last month of the winter, February, is another freezing cold month in Prairie Grove, Illinois, with an average temperature varying between 30.6°F (-0.8°C) and 18°F (-7.8°C). The advent of February brings an average high-temperature of a still subzero cold 30.6°F (-0.8°C), almost identical to the preceding month. Weather in February »

Weather in March

March, the first month of the spring in Prairie Grove, is a frosty month, with temperature in the range of an average low of 29.5°F (-1.4°C) and an average high of 43.3°F (6.3°C). The arrival of March brings an increase in high-temperatures, moving from a freezing cold 30.6°F (-0.8°C) in February to a frosty 43.3°F (6.3°C). Weather in March »

Weather in April

April in Prairie Grove, Illinois, is a fresh spring month, with an average temperature varying between 38.8°F (3.8°C) and 54.7°F (12.6°C). April shows a rise in the average high-temperature, moving from March's frosty 43.3°F (6.3°C) to a cool 54.7°F (12.6°C). Weather in April »

Weather in May

May, the last month of the spring in Prairie Grove, is a comfortable month, with temperature in the range of an average low of 50°F (10°C) and an average high of 67.1°F (19.5°C). A rise in the average high-temperature is observed during May, moving from a fresh 54.7°F (12.6°C) in April to a comfortable 67.1°F (19.5°C). Weather in May »

Weather in June

June, the first month of the summer in Prairie Grove, is a moderately hot month, with temperature in the range of an average high of 76.1°F (24.5°C) and an average low of 59°F (15°C). Prairie Grove, Illinois, sees an increase in the average high-temperature with the arrival of June, moving from May's refreshing 67.1°F (19.5°C) to a moderately hot 76.1°F (24.5°C). Weather in June »

Weather in July

July, like June, in Prairie Grove, Illinois, is another warm summer month, with an average temperature ranging between min 63.1°F (17.3°C) and max 79.5°F (26.4°C). Prairie Grove witnesses the warmest weather in July, with temperatures averaging a high of 79.5°F (26.4°C) and a low of 63.1°F (17.3°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Prairie Grove, Illinois, with temperature in the range of an average high of 78.1°F (25.6°C) and an average low of 61.9°F (16.6°C). Prairie Grove experiences a minor change to a still warm 78.1°F (25.6°C) in average high-temperature during August, closely reflecting July. Weather in August »

Weather in September

The first month of the autumn, September, is still a pleasant month in Prairie Grove, Illinois, with an average temperature ranging between max 72.5°F (22.5°C) and min 55°F (12.8°C). With the onset of September, Prairie Grove's climate undergoes a slight change as the average high-temperature moves from a moderately hot 78.1°F (25.6°C) in August to an agreeable 72.5°F (22.5°C). Weather in September »

Weather in October

October, the same as September, in Prairie Grove, Illinois, is another mild autumn month, with an average temperature ranging between max 59°F (15°C) and min 43.9°F (6.6°C). With the onset of October, Prairie Grove's average high-temperature adjusts, receding from September's pleasant 72.5°F (22.5°C) to a mild 59°F (15°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in Prairie Grove, Illinois, with an average temperature ranging between max 44.6°F (7°C) and min 31.8°F (-0.1°C). As November arrives, a noticeable drop in the average high-temperature is witnessed, moving from a mild 59°F (15°C) in October to a chilly 44.6°F (7°C). Weather in November »

Weather in December

The first month of the winter, December, is also a wintry month in Prairie Grove, Illinois, with an average temperature varying between 32.9°F (0.5°C) and 22.8°F (-5.1°C). As Prairie Grove enters December, the average high-temperature decreases from the a frosty 44.6°F (7°C) of November to a wintry 32.9°F (0.5°C). Weather in December »
Updated: Jul 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month?

Prairie Grove's January weather, marked by an average high temperature of 27°F (-2.8°C) and an average low temperature of 15.1°F (-9.4°C), is the coldest in the year.

What are the most humid months?

The months with the highest humidity are January and February, with an average relative humidity of 85%.

How much does it rain?

Throughout the year, there are 146.9 rainfall days, and 21.22" (539mm) of precipitation is accumulated.

When does it snow?

Months with snowfall are January through May, October through December.

When does it snow the most?

The month with the most snowfall is January, when snow falls for 12.5 days and typically aggregates up to 3.31" (84mm) of snow.

How much does it snow?

Throughout the year, there are 48.7 snowfall days, and 11.85" (301mm) of snow is accumulated.

What is the month with the least sunshine?

January has the least sunshine of the year, with an average of 3.7h of sunshine.

When is the lowest UV index?

January and December, with an average maximum UV index of 1, are months with the lowest UV index.

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.

What is the least humid month in Prairie Grove?

The months with the lowest humidity are April and October, with an average relative humidity of 76%.

What is the wettest month in Prairie Grove?

The month with the most rainfall is June, when the rain falls for 16.3 days and typically aggregates up to 2.8" (71mm) of precipitation.

When it does not snow?

June through September are months without snowfall.

When are the longest days?

The month with the longest days is June, with an average of 15h and 12min of daylight.

What are the warmest months?

July, noted for its average high-temperature of 79.5°F (26.4°C) and an average low-temperature of 63.1°F (17.3°C), is considered the warmest month.

What month has the most sunshine?

With an average of 10h of sunshine, July has the most sunshine of the year.

What is the month with the highest UV index?

With an average maximum UV index of 6, August is the month with the highest UV index.

What is the driest month?

The months with the least rainfall are November and December Rain falls for 8 days and accumulates 0.94" (24mm) of rain.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 6min of daylight.

Average temperature
Prairie Grove, IL

Average temperature - Prairie Grove, IL

The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (27°F).

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).

Average pressure
Prairie Grove, IL

Average pressure - Prairie Grove, IL

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
Prairie Grove, IL

Average wind speed - Prairie Grove, IL

The windiest months (with the highest average wind speed) are January and February (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

Average humidity
Prairie Grove, IL

Average humidity - Prairie Grove, IL

The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are April and October (76%).

Average rainfall
Prairie Grove, IL

Average rainfall - Prairie Grove, IL

The wettest month (with the highest rainfall) is June (2.8").
The driest months (with the least rainfall) are November and December (0.94").

Average rainfall days
Prairie Grove, IL

Average rainfall days - Prairie Grove, IL

The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is February (4.8 days).

Average snowfall
Prairie Grove, IL

Average snowfall - Prairie Grove, IL

The month with the highest snowfall is January (3.31").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days
Prairie Grove, IL

Average snowfall days - Prairie Grove, IL

The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Prairie Grove, IL

Average daylight / Average sunshine - Prairie Grove, IL

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

Average sunshine days
Prairie Grove, IL

Average sunshine days - Prairie Grove, IL

The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is July (10 days).

Average visibility
Prairie Grove, IL

Average visibility - Prairie Grove, IL

The months with the highest visibility are March, April, May, June, July, September, October, November and December (6mi).
The months with the lowest visibility are January, February and August (5mi).

Prairie Grove, Illinois, USA

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