Climate and monthly weather forecast
Plainville, IL

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Weather in January

January, like December, in Plainville, Illinois, is an icy winter month, with temperature in the range of an average low of 21.6°F (-5.8°C) and an average high of 34°F (1.1°C). January is the coldest month, exhibiting average temperatures of 34°F (1.1°C) at the peak and 21.6°F (-5.8°C) at the base. Weather in January »

Weather in February

The last month of the winter, February, is another cold month in Plainville, Illinois, with an average temperature varying between 38.8°F (3.8°C) and 24.8°F (-4°C). The advent of February reveals an average high-temperature of a still icy 38.8°F (3.8°C), showing minimal difference from the prior month. Weather in February »

Weather in March

March, the first month of the spring in Plainville, is a cool month, with an average temperature varying between 35.8°F (2.1°C) and 51.6°F (10.9°C). March brings an increase in the average high-temperature, progressing from a cold 38.8°F (3.8°C) in February to a fresh 51.6°F (10.9°C). Weather in March »

Weather in April

April in Plainville, Illinois, is a comfortable spring month, with an average temperature varying between 45.5°F (7.5°C) and 63.5°F (17.5°C). Plainville's weather shows a temperature rise with the arrival of April, moving from a cool 51.6°F (10.9°C) in March to a refreshing 63.5°F (17.5°C). Weather in April »

Weather in May

May, the last month of the spring in Plainville, is an agreeable month, with an average temperature fluctuating between 55.8°F (13.2°C) and 72.7°F (22.6°C). May sees a rise in the average high-temperature, climbing from an enjoyable 63.5°F (17.5°C) in April to an agreeable 72.7°F (22.6°C). Weather in May »

Weather in June

June, the first month of the summer in Plainville, is a moderately hot month, with temperature in the range of an average low of 64.4°F (18°C) and an average high of 82°F (27.8°C). With the transition into June, Plainville experiences an increase in average high-temperatures, moving up from a pleasant 72.7°F (22.6°C) in May to a moderately hot 82°F (27.8°C). Weather in June »

Weather in July

July, like June, in Plainville, Illinois, is another warm summer month, with an average temperature varying between 84.7°F (29.3°C) and 67.1°F (19.5°C). July, with average temperatures reaching a high of 84.7°F (29.3°C) and a low of 67.1°F (19.5°C), is the warmest month. July's heat index is evaluated at a fiery hot 96.8°F (36°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Plainville, Illinois, with an average temperature fluctuating between 64.9°F (18.3°C) and 83.8°F (28.8°C). With the onset of August, the average high-temperature registers at a still warm 83.8°F (28.8°C), subtly different from July's 84.7°F (29.3°C). Weather in August »

Weather in September

September, the first month of the autumn in Plainville, is also a moderately hot month, with an average temperature fluctuating between 58.3°F (14.6°C) and 78.4°F (25.8°C). The advent of September brings a subtle shift in temperature, with the average high moving from 83.8°F (28.8°C) in August to a still warm 78.4°F (25.8°C). Weather in September »

Weather in October

October, the same as September, is another comfortable autumn month in Plainville, Illinois, with an average temperature ranging between max 64.4°F (18°C) and min 47.1°F (8.4°C). The transition into October is accompanied by a temperature decrease, with the average high-temperature shifting from a moderately hot 78.4°F (25.8°C) in September to a refreshing 64.4°F (18°C). Weather in October »

Weather in November

November, the last month of the autumn in Plainville, is also a fresh month, with temperature in the range of an average high of 51.4°F (10.8°C) and an average low of 36.1°F (2.3°C). The arrival of November corresponds with a reduction in the average high-temperature, down from October's refreshing 64.4°F (18°C) to a cool 51.4°F (10.8°C). Weather in November »

Weather in December

The first month of the winter, December, is also an icy month in Plainville, Illinois, with temperature in the range of an average low of 27.1°F (-2.7°C) and an average high of 39.6°F (4.2°C). As Plainville, Illinois, enters December, the average high-temperature decreases from the a fresh 51.4°F (10.8°C) of November to a wintry 39.6°F (4.2°C). Weather in December »
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest in Plainville?

In Plainville, Illinois, the lowest temperatures are generally noted in January, averaging a high of 34°F (1.1°C) and a low of 21.6°F (-5.8°C).

What is the driest month in Plainville?

The month with the least rainfall in Plainville is January, when the rain falls for 5.3 days and typically collects 1.14" (29mm) of precipitation.

How much does it rain in Plainville?

Throughout the year, there are 136 rainfall days, and 25" (635mm) of precipitation is accumulated.

When does it snow in Plainville?

Months with snowfall in Plainville, Illinois, are January through April, November and December.

What is the snowiest month in Plainville?

January is the month with the most snowfall. Snow falls for 6.2 days and accumulates 3.31" (84mm) of snow.

How many days does it snow in Plainville?

In Plainville, Illinois, during the entire year, snow falls for 20 days and aggregates up to 8.5" (216mm) of snow.

What is the month with the least sunshine in Plainville?

With an average of 4.5h of sunshine, January has the least sunshine of the year.

When is the lowest UV index in Plainville?

The months with the lowest UV index in Plainville, Illinois, are January, February, November and December, with an average maximum UV index of 2.

When is Daylight Saving Time (DST) in Plainville?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Plainville, 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 are the most humid months in Plainville?

The months with the highest humidity in Plainville, Illinois, are May through July, with an average relative humidity of 80%.

What is the rainiest month in Plainville?

May is the month with the most rainfall in Plainville. Rain falls for 17.3 days and accumulates 3.39" (86mm) of precipitation.

When it does not snow in Plainville?

In Plainville, Illinois, snow does not fall in May through October.

When are the longest days in Plainville?

The month with the longest days is June, with an average of 14h and 54min of daylight.

When is the highest UV index in Plainville?

The months with the highest UV index are June through August, with an average maximum UV index of 6.

What is the warmest month in Plainville?

July is the month when Plainville's temperatures reach their peak, with averages of 84.7°F (29.3°C) and lows of 67.1°F (19.5°C).

What month has the most sunshine in Plainville?

The month with the most sunshine in Plainville is July, with an average of 10.5h of sunshine.

What is the least humid month in Plainville?

October is the least humid month, with an average relative humidity of 70%.

What is the month with the shortest days in Plainville?

With an average of 9h and 24min of daylight, December has the shortest days of the year.

Average temperature
Plainville, IL

Average temperature - Plainville, IL

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (34°F).

The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

Average pressure
Plainville, IL

Average pressure - Plainville, IL

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed
Plainville, IL

Average wind speed - Plainville, IL

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

Average humidity
Plainville, IL

Average humidity - Plainville, IL

The months with the highest relative humidity are May, June and July (80%).
The month with the lowest relative humidity is October (70%).

Average rainfall
Plainville, IL

Average rainfall - Plainville, IL

The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is January (1.14").

Average rainfall days
Plainville, IL

Average rainfall days - Plainville, IL

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (5.3 days).

Average snowfall
Plainville, IL

Average snowfall - Plainville, IL

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

Average snowfall days
Plainville, IL

Average snowfall days - Plainville, IL

The month with the highest number of snowfall days is January (6.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight / Average sunshine
Plainville, IL

Average daylight / Average sunshine - Plainville, IL

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

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

Average sunshine days
Plainville, IL

Average sunshine days - Plainville, IL

The month with the most sunshine days is December (20.3 days).
The month with the least sunshine days is June (11.6 days).

Average UV index
Plainville, IL

Average UV index - Plainville, IL

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average visibility
Plainville, IL

Average visibility - Plainville, 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).

Plainville, Illinois, USA

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