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 ranging between max 32.7°F (0.4°C) and min 20.1°F (-6.6°C). January is the month when Columbus sees the lowest average temperatures, with a high of 32.7°F (0.4°C) and a low of 20.1°F (-6.6°C). Weather in January »

Weather in February

February, the last month of the winter in Columbus, is another cold month, with an average temperature fluctuating between 24.1°F (-4.4°C) and 37.6°F (3.1°C). Columbus marks the start of February with an average high-temperature of a still icy 37.6°F (3.1°C), hinting at a slight fluctuation from January's 32.7°F (0.4°C). Weather in February »

Weather in March

March, the first month of the spring in Columbus, is a cool month, with an average temperature ranging between max 50.9°F (10.5°C) and min 35.1°F (1.7°C). With the arrival of March, the average high-temperature transitions from an icy 37.6°F (3.1°C) in February to a fresh 50.9°F (10.5°C). Weather in March »

Weather in April

April is a comfortable spring month in Columbus, Illinois, with temperature in the range of an average low of 45.1°F (7.3°C) and an average high of 62.4°F (16.9°C). April's arrival signals a temperature shift, moving from a fresh 50.9°F (10.5°C) in March to a comfortable 62.4°F (16.9°C). Weather in April »

Weather in May

May, the last month of the spring in Columbus, is an agreeable month, with an average temperature ranging between min 55.2°F (12.9°C) and max 72°F (22.2°C). As Columbus enters May, the average high-temperature increases from the an enjoyable 62.4°F (16.9°C) of April 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 varying between 81.1°F (27.3°C) and 64°F (17.8°C). The shift into June is marked by a rise in the average high-temperature, moving from May's pleasant 72°F (22.2°C) to a warm 81.1°F (27.3°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Columbus, Illinois, with temperature in the range of an average high of 83.8°F (28.8°C) and an average low of 66.6°F (19.2°C). July temperatures tend to peak at an average high of 83.8°F (28.8°C) and dip to a low of 66.6°F (19.2°C). The heat index for July is computed to be a tropical 93.2°F (34°C). Weather in July »

Weather in August

August, the last month of the summer in Columbus, is also a moderately hot month, with an average temperature varying between 82.9°F (28.3°C) and 64.9°F (18.3°C). Welcoming August, Columbus notes an average high-temperature of a still warm 82.9°F (28.3°C), nearly consistent with July's 83.8°F (28.8°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Columbus, Illinois, 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). A subtle change in temperatures is noted as August gives way to September, with average highs reducing from 82.9°F (28.3°C) to a still warm 77.5°F (25.3°C). Weather in September »

Weather in October

October, like September, in Columbus, Illinois, is another comfortable autumn month, with an average temperature ranging between max 63.5°F (17.5°C) and min 46.8°F (8.2°C). The shift from September to October involves a decrease in the average high-temperature, dropping from a warm 77.5°F (25.3°C) to a refreshing 63.5°F (17.5°C). Weather in October »

Weather in November

November, the last month of the autumn in Columbus, is another cool month, with an average temperature fluctuating between 35.8°F (2.1°C) and 50.2°F (10.1°C). A decrease in the average high-temperature is observed during November, shifting 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

December, the first month of the winter in Columbus, is still a cold month, with temperature in the range of an average high of 38.5°F (3.6°C) and an average low of 26.8°F (-2.9°C). The transition into December involves a decrease in the average high-temperature, falling from a fresh 50.2°F (10.1°C) in November to a wintry 38.5°F (3.6°C). Weather in December »

Frequently asked questions

What is the coldest month?

January is the coldest month, with the temperature often reaching an average high of 32.7°F (0.4°C) and an average low of 20.1°F (-6.6°C).

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 many days does it rain?

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

When does it snow?

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

What is the snowiest month?

January is the month with the most snowfall. Snow falls for 8.8 days and accumulates 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?

The month with the least sunshine is January, with an average of 4.3h of sunshine.

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 wettest month?

May is the month with the most rainfall. Rain falls for 16.9 days and accumulates 3.35" (85mm) of precipitation.

When it does not snow in Columbus?

In Columbus, snow does not fall in May through September.

What are the most humid months?

June and July, with an average relative humidity of 81%, are most humid months.

When are the longest days?

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?

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

What are the warmest months?

The warmest month is July, with an average high-temperature of 83.8°F (28.8°C) and an average low-temperature of 66.6°F (19.2°C).

What month has the most sunshine?

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

What is the least humid month?

October is the least humid month in Columbus, with an average relative humidity of 71%.

What is the month with the shortest days?

The month with the shortest days is December, 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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