Climate and monthly weather forecast
Columbus, IL

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Weather in January

January, like December, in Columbus, Illinois, is an icy winter month, with an average temperature fluctuating between 32.7°F (0.4°C) and 20.1°F (-6.6°C). January brings the lowest temperatures, with an average high of 32.7°F (0.4°C) and an average low of 20.1°F (-6.6°C). Weather in January »

Weather in February

February, the last month of the winter in Columbus, is also an icy month, with an average temperature varying between 24.1°F (-4.4°C) and 37.6°F (3.1°C). The transition into February notes an average high-temperature of a still wintry 37.6°F (3.1°C), revealing a mild distinction from the 32.7°F (0.4°C) in January. Weather in February »

Weather in March

The first month of the spring, March, is a fresh month in Columbus, Illinois, with an average temperature fluctuating between 35.1°F (1.7°C) and 50.9°F (10.5°C). The onset of March brings a rise in the average high-temperature, elevating from a cold 37.6°F (3.1°C) in February to a cool 50.9°F (10.5°C). Weather in March »

Weather in April

April is a refreshing spring month in Columbus, Illinois, with an average temperature ranging between min 45.1°F (7.3°C) and max 62.4°F (16.9°C). With the onset of April, Columbus sees a temperature rise, with the average high-temperature moving from March's cool 50.9°F (10.5°C) to an enjoyable 62.4°F (16.9°C). Weather in April »

Weather in May

The last month of the spring, May, is an agreeable month in Columbus, Illinois, with an average temperature ranging between max 72°F (22.2°C) and min 55.2°F (12.9°C). The shift from April to May sees an increase in the average high-temperature, transitioning from an enjoyable 62.4°F (16.9°C) to an agreeable 72°F (22.2°C). Weather in May »

Weather in June

June, the first month of the summer in Columbus, is a warm month, with an average temperature fluctuating between 81.1°F (27.3°C) and 64°F (17.8°C). June brings a rise in Columbus's average high-temperature, moving from an agreeable 72°F (22.2°C) in May to a moderately hot 81.1°F (27.3°C). Weather in June »

Weather in July

July, like June, in Columbus, Illinois, is a moderately hot summer month, with an average temperature fluctuating between 83.8°F (28.8°C) and 66.6°F (19.2°C). Columbus, Illinois, reaches its highest average temperatures in July, measuring 83.8°F (28.8°C) at the peak and 66.6°F (19.2°C) at the lowest. In July, the average heat index is computed to be a tropical 93.2°F (34°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Columbus, Illinois, with an average temperature ranging between min 64.9°F (18.3°C) and max 82.9°F (28.3°C). August's advent presents an average high-temperature of a still moderately hot 82.9°F (28.3°C), indicating a slight variation from the conditions of the previous month. Weather in August »

Weather in September

September, the first month of the autumn in Columbus, is still a warm month, with temperature in the range of an average high of 77.5°F (25.3°C) and an average low of 58.1°F (14.5°C). The start of September signals a gentle decrease in the average high-temperature, transitioning from a warm 82.9°F (28.3°C) in August to a still moderately hot 77.5°F (25.3°C). Weather in September »

Weather in October

October, the same as September, is another comfortable autumn month in Columbus, Illinois, with an average temperature ranging between min 46.8°F (8.2°C) and max 63.5°F (17.5°C). October brings a minor decrease, with the average high-temperature reducing from a moderately hot 77.5°F (25.3°C) in September to an enjoyable 63.5°F (17.5°C). Weather in October »

Weather in November

November, the last month of the autumn in Columbus, is also a fresh month, with an average temperature ranging between max 50.2°F (10.1°C) and min 35.8°F (2.1°C). During Columbus's transition into November, the average high-temperature lessens, moving from a comfortable 63.5°F (17.5°C) in October to a fresh 50.2°F (10.1°C). Weather in November »

Weather in December

The first month of the winter, December, is still a cold month in Columbus, Illinois, with an average temperature fluctuating between 26.8°F (-2.9°C) and 38.5°F (3.6°C). December shows a mild decline in the average high-temperature, falling from November's fresh 50.2°F (10.1°C) to a cold 38.5°F (3.6°C). Weather in December »

Frequently asked questions

What is the coldest time of year?

With average high and low temperatures of 32.7°F (0.4°C) and 20.1°F (-6.6°C) respectively, January is Columbus's coldest month.

What is the driest month?

The months with the least rainfall are January and December Rain falls for 5 days and accumulates 1.02" (26mm) of rain.

How much does it rain?

Throughout the year, there are 134.2 rainfall days, and 23.15" (588mm) of precipitation is accumulated.

When does it snow?

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

What is the snowiest month?

The month with the most snowfall is January, when snow falls for 8.8 days and typically aggregates up to 2.76" (70mm) of snow.

How many days does it snow?

Throughout the year, there are 27.6 snowfall days, and 7.95" (202mm) of snow is accumulated.

What is the month with the least sunshine?

With an average of 4.3h of sunshine, January has the least sunshine of the year.

What is the month with the lowest UV index?

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

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 rainiest month?

The month with the most rainfall is May, when the rain falls for 16.9 days and typically aggregates up to 3.35" (85mm) of precipitation.

When it does not snow?

May through September are months without snowfall.

What are the most humid months?

The months with the highest humidity are June and July, with an average relative humidity of 81%.

When are the longest days in Columbus?

With an average of 15h and 0min of daylight, June has the longest days of the year.

What are the months with the highest UV index?

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

What is the hottest time of year?

July is the month when Columbus's temperatures reach their peak, with averages of 83.8°F (28.8°C) and lows of 66.6°F (19.2°C).

What month has the most sunshine?

With an average of 10.3h of sunshine, July has the most sunshine of the year.

What is the least humid month in Columbus?

The least humid month is October, with an average relative humidity of 71%.

What is the month with the shortest days?

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

Average temperature
Columbus, IL

Average temperature - Columbus, IL

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (32.7°F).

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).

Average pressure
Columbus, IL

Average pressure - Columbus, 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
Columbus, IL

Average wind speed - Columbus, IL

The windiest months (with the highest average wind speed) are January and February (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).

Average humidity
Columbus, IL

Average humidity - Columbus, IL

The months with the highest relative humidity are June and July (81%).
The month with the lowest relative humidity is October (71%).

Average rainfall
Columbus, IL

Average rainfall - Columbus, IL

The wettest month (with the highest rainfall) is May (3.35").
The driest months (with the least rainfall) are January and December (1.02").

Average rainfall days
Columbus, IL

Average rainfall days - Columbus, IL

The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (5 days).

Average snowfall
Columbus, IL

Average snowfall - Columbus, IL

The month with the highest snowfall is January (2.76").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days
Columbus, IL

Average snowfall days - Columbus, IL

The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight / Average sunshine
Columbus, IL

Average daylight / Average sunshine - Columbus, IL

The month with the longest days is June (Average daylight: 15h and 0min).
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 18min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

Average sunshine days
Columbus, IL

Average sunshine days - Columbus, IL

The month with the most sunshine days is December (19.6 days).
The month with the least sunshine days is June (11.1 days).

Average UV index
Columbus, IL

Average UV index - Columbus, 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
Columbus, IL

Average visibility - Columbus, 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).

Columbus, Illinois, USA

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