Climate and monthly weather forecast
Cairo, IL

Weather in January

January, like December, in Cairo, Illinois, is another cold winter month, with an average temperature varying between 28.4°F (-2°C) and 41.2°F (5.1°C). The coldest month is January, with an average high-temperature of 41.2°F (5.1°C) and an average low-temperature of 28.4°F (-2°C). Weather in January »

Weather in February

February, the last month of the winter in Cairo, is a frosty month, with an average temperature ranging between min 31.8°F (-0.1°C) and max 45.7°F (7.6°C). In February, the average high-temperature is almost the same as in January - a chilly 45.7°F (7.6°C). Weather in February »

Weather in March

The first month of the spring, March, is a mild month in Cairo, Illinois, with temperature in the range of an average high of 56.8°F (13.8°C) and an average low of 40.6°F (4.8°C). In March, the average high-temperature rises from a chilly 45.7°F (7.6°C) in February to a moderate 56.8°F (13.8°C). Weather in March »

Weather in April

April is an enjoyable spring month in Cairo, Illinois, with an average temperature fluctuating between 67.6°F (19.8°C) and 50.2°F (10.1°C). In Cairo, Illinois, the average high-temperature in April rises from a moderate 56.8°F (13.8°C) in March to a comfortable 67.6°F (19.8°C). Weather in April »

Weather in May

May, the last month of the spring in Cairo, is a warm month, with temperature in the range of an average high of 76.6°F (24.8°C) and an average low of 59.5°F (15.3°C). In May, the average high-temperature rises from an enjoyable 67.6°F (19.8°C) in April to a warm 76.6°F (24.8°C). Weather in May »

Weather in June

June, the first month of the summer in Cairo, is a tropical month, with an average temperature fluctuating between 67.6°F (19.8°C) and 86°F (30°C). In June, the average high-temperature increases from a warm 76.6°F (24.8°C) in May to a tropical 86°F (30°C). Weather in June »

Weather in July

July, the same as June, in Cairo, Illinois, is a hot summer month, with an average temperature varying between 69.8°F (21°C) and 88.2°F (31.2°C). With an average high-temperature of 88.2°F (31.2°C) and an average low-temperature of 69.8°F (21°C), July is the warmest month. In July, the average heat index is appraised at a scorching 104.2°F (40.1°C). Weather in July »

Weather in August

The last month of the summer, August, is also a hot month in Cairo, Illinois, with an average temperature ranging between min 67.5°F (19.7°C) and max 86.4°F (30.2°C). In August, the average high-temperature is essentially the same as in July - a still hot 86.4°F (30.2°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Cairo, Illinois, with an average temperature varying between 61.9°F (16.6°C) and 81.5°F (27.5°C). In September, the average high-temperature is almost the same as in August - a moderately hot 81.5°F (27.5°C). Weather in September »

Weather in October

October, like September, is another pleasant autumn month in Cairo, Illinois, with an average temperature varying between 51.1°F (10.6°C) and 68.9°F (20.5°C). In October, the average high-temperature drops from a warm 81.5°F (27.5°C) in September to a pleasant 68.9°F (20.5°C). Weather in October »

Weather in November

The last month of the autumn, November, is another mild month in Cairo, Illinois, with an average temperature fluctuating between 40.1°F (4.5°C) and 55.4°F (13°C). In Cairo, the average high-temperature in November decreases from an agreeable 68.9°F (20.5°C) in October to a mild 55.4°F (13°C). Weather in November »

Weather in December

December, the first month of the winter in Cairo, is still a chilly month, with an average temperature fluctuating between 33.8°F (1°C) and 45.5°F (7.5°C). In December, the average high-temperature decreases from a mild 55.4°F (13°C) in November to a chilly 45.5°F (7.5°C). Weather in December »
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FAQ

What is the coldest month in Cairo?

The coldest month is January, with an average high-temperature of 41.2°F (5.1°C) and an average low-temperature of 28.4°F (-2°C).

How much does it rain in Cairo?

Throughout the year, in Cairo, there are 156.3 rainfall days, and 36.65" (931mm) of precipitation is accumulated.

When does it snow in Cairo?

January through April, October through December are months with snowfall in Cairo, Illinois.

How much does it snow in Cairo?

Throughout the year, in Cairo, Illinois, there are 11.5 snowfall days, and 4.88" (124mm) of snow is accumulated.

When is the lowest UV index in Cairo?

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

What is the most humid month in Cairo?

February, March, May and December, with an average relative humidity of 78%, are most humid months in Cairo, Illinois.

What is the snowiest month in Cairo?

February is the month with the most snowfall in Cairo, Illinois. Snow falls for 3.8 days and accumulates 1.5" (38mm) of snow.

What is the month with the least sunshine in Cairo?

With an average of 4.7h of sunshine, February has the least sunshine of the year in Cairo, Illinois.

When is Daylight Saving Time (DST) in Cairo?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts in Cairo, Illinois, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from CDT to CST.

What is the wettest month in Cairo?

April is the month with the most rainfall. Rain falls for 15.2 days and accumulates 4.21" (107mm) of precipitation.

When it does not snow in Cairo?

May through September are months without snowfall.

What are the months with the highest UV index in Cairo?

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

When are the longest days in Cairo?

With an average of 14h and 40min of daylight, June has the longest days of the year in Cairo, Illinois.

What month has the most sunshine in Cairo?

June has the most sunshine of the year in Cairo, with an average of 10.7h of sunshine.

What is the warmest month in Cairo?

July is the warmest month, with an average high-temperature of 88.2°F (31.2°C) and an average low-temperature of 69.8°F (21°C).

What is the driest month in Cairo?

September is the month with the least rainfall in Cairo, Illinois. Rain falls for 11.4 days and accumulates 1.42" (36mm) of precipitation.

What is the least humid month in Cairo?

The least humid month in Cairo, Illinois, is October, with an average relative humidity of 69%.

What is the month with the shortest days in Cairo?

December has the shortest days of the year in Cairo, Illinois, with an average of 9h and 40min of daylight.

Average temperature
Cairo, IL

Average temperature - Cairo, IL

The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (41.2°F).

The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).

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Average pressure
Cairo, IL

Average pressure - Cairo, 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).

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Average wind speed
Cairo, IL

Average wind speed - Cairo, IL

The windiest months (with the highest average wind speed) are January, February and March (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

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Average humidity
Cairo, IL

Average humidity - Cairo, IL

The months with the highest relative humidity are February, March, May and December (78%).
The month with the lowest relative humidity is October (69%).

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Average rainfall
Cairo, IL

Average rainfall - Cairo, IL

The wettest month (with the highest rainfall) is April (4.21").
The driest month (with the least rainfall) is September (1.42").

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Average rainfall days
Cairo, IL

Average rainfall days - Cairo, IL

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (9.8 days).

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Average snowfall
Cairo, IL

Average snowfall - Cairo, IL

The month with the highest snowfall is February (1.5").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days
Cairo, IL

Average snowfall days - Cairo, IL

The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight / Average sunshine
Cairo, IL

Average daylight / Average sunshine - Cairo, IL

The month with the longest days is June (Average daylight: 14h and 40min).
The month with the shortest days is December (Average daylight: 9h and 40min).

The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days
Cairo, IL

Average sunshine days - Cairo, IL

The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is May (12.3 days).

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Average UV index
Cairo, IL

Average UV index - Cairo, 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).

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Average visibility
Cairo, IL

Average visibility - Cairo, 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).

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