Climate and monthly weather forecast
Oconee, IL

Weather in January

January, like December, in Oconee, Illinois, is a wintry winter month, with an average temperature ranging between max 34.3°F (1.3°C) and min 22.1°F (-5.5°C). The coldest month is January, with an average high-temperature of 34.3°F (1.3°C) and an average low-temperature of 22.1°F (-5.5°C). Weather in January »

Weather in February

The last month of the winter, February, is another cold month in Oconee, Illinois, with temperature in the range of an average low of 25.9°F (-3.4°C) and an average high of 39.2°F (4°C). In February, the average high-temperature is essentially the same as in January - a still cold 39.2°F (4°C). Weather in February »

Weather in March

The first month of the spring, March, is a fresh month in Oconee, Illinois, with an average temperature fluctuating between 36.1°F (2.3°C) and 51.4°F (10.8°C). In Oconee, the average high-temperature in March increases from a cold 39.2°F (4°C) in February to a fresh 51.4°F (10.8°C). Weather in March »

Weather in April

April in Oconee, Illinois, is a comfortable spring month, with an average temperature ranging between max 63.1°F (17.3°C) and min 46.6°F (8.1°C). In Oconee, the average high-temperature in April increases from a fresh 51.4°F (10.8°C) in March to an enjoyable 63.1°F (17.3°C). Weather in April »

Weather in May

May, the last month of the spring in Oconee, is a pleasant month, with an average temperature fluctuating between 57°F (13.9°C) and 73°F (22.8°C). In Oconee, the average high-temperature in May rises from an enjoyable 63.1°F (17.3°C) in April to a pleasant 73°F (22.8°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Oconee, Illinois, with an average temperature ranging between min 64.9°F (18.3°C) and max 81.1°F (27.3°C). In June, the average high-temperature marginally rises from an agreeable 73°F (22.8°C) in May to a warm 81.1°F (27.3°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Oconee, Illinois, with an average temperature fluctuating between 83.1°F (28.4°C) and 66.6°F (19.2°C). The warmest month is July, with an average high-temperature of 83.1°F (28.4°C) and an average low-temperature of 66.6°F (19.2°C). In July, the average heat index is estimated at a hot 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 Oconee, Illinois, with an average temperature varying between 64.9°F (18.3°C) and 81.9°F (27.7°C). In August, the average high-temperature is practically the same as in July - a still warm 81.9°F (27.7°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Oconee, Illinois, with an average temperature varying between 58.8°F (14.9°C) and 77.4°F (25.2°C). In September, the average high-temperature is almost the same as in August - a still moderately hot 77.4°F (25.2°C). Weather in September »

Weather in October

October, like September, in Oconee, Illinois, is another enjoyable autumn month, with an average temperature varying between 48.2°F (9°C) and 64.2°F (17.9°C). In Oconee, Illinois, the average high-temperature in October drops from a moderately hot 77.4°F (25.2°C) in September to an enjoyable 64.2°F (17.9°C). Weather in October »

Weather in November

November, the last month of the autumn in Oconee, is also a fresh month, with temperature in the range of an average high of 50.7°F (10.4°C) and an average low of 36.5°F (2.5°C). In November, the average high-temperature decreases from a comfortable 64.2°F (17.9°C) in October to a fresh 50.7°F (10.4°C). Weather in November »

Weather in December

December, the first month of the winter in Oconee, is also a wintry month, with an average temperature ranging between min 28.4°F (-2°C) and max 39.6°F (4.2°C). In December, the average high-temperature drops from a cool 50.7°F (10.4°C) in November to a cold 39.6°F (4.2°C). Weather in December »
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FAQ

What is the coldest month in Oconee?

January is the coldest month in Oconee, Illinois, with an average high-temperature of 34.3°F (1.3°C) and an average low-temperature of 22.1°F (-5.5°C).

How much does it rain in Oconee?

Throughout the year, in Oconee, there are 129.9 rainfall days, and 17.6" (447mm) of precipitation is accumulated.

When does it snow in Oconee?

January through April, November and December are months with snowfall.

How many days does it snow in Oconee?

In Oconee, during the entire year, snow falls for 21.4 days and aggregates up to 5.2" (132mm) of snow.

What is the month with the least sunshine in Oconee?

January has the least sunshine of the year, with an average of 4.2h of sunshine.

What is the month with the lowest UV index in Oconee?

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

What is the driest month in Oconee?

The months with the least rainfall in Oconee, Illinois, are February and December Rain falls for 6.7 days and accumulates 0.98" (25mm) of rain.

What is the snowiest month in Oconee?

February is the month with the most snowfall in Oconee, Illinois. Snow falls for 6.3 days and accumulates 1.93" (49mm) of snow.

When is Daylight Saving Time (DST) in Oconee?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts in Oconee, 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.

When it does not snow in Oconee?

May through October are months without snowfall in Oconee, Illinois.

What is the rainiest month in Oconee?

June is the month with the most rainfall. Rain falls for 13.5 days and accumulates 2.2" (56mm) of precipitation.

When are the longest days in Oconee?

The month with the longest days in Oconee is June, with an average of 14h and 53min of daylight.

What month has the most sunshine in Oconee?

With an average of 10.4h of sunshine, June has the most sunshine of the year.

When is the highest UV index in Oconee?

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

What is the warmest month in Oconee?

July is the warmest month in Oconee, with an average high-temperature of 83.1°F (28.4°C) and an average low-temperature of 66.6°F (19.2°C).

What is the most humid month in Oconee?

The most humid month in Oconee, Illinois, is July, with an average relative humidity of 83%.

What is the least humid month in Oconee?

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

What is the month with the shortest days in Oconee?

With an average of 9h and 28min of daylight, December has the shortest days of the year.

Average temperature
Oconee, IL

Average temperature - Oconee, IL

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (34.3°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 (22.1°F).

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Average pressure
Oconee, IL

Average pressure - Oconee, IL

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed
Oconee, IL

Average wind speed - Oconee, IL

The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).

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Average rainfall
Oconee, IL

Average rainfall - Oconee, IL

The wettest month (with the highest rainfall) is June (2.2").
The driest months (with the least rainfall) are February and December (0.98").

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Average rainfall days
Oconee, IL

Average rainfall days - Oconee, IL

The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is January (5.9 days).

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Average snowfall
Oconee, IL

Average snowfall - Oconee, IL

The month with the highest snowfall is February (1.93").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days
Oconee, IL

Average snowfall days - Oconee, IL

The months with the highest number of snowfall days are January and February (6.3 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
Oconee, IL

Average daylight / Average sunshine - Oconee, IL

The month with the longest days is June (Average daylight: 14h and 53min).
The month with the shortest days is December (Average daylight: 9h and 28min).

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

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Average sunshine days
Oconee, IL

Average sunshine days - Oconee, IL

The month with the most sunshine days is January (20.2 days).
The month with the least sunshine days is May (13.1 days).

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Average UV index
Oconee, IL

Average UV index - Oconee, 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).

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Average visibility
Oconee, IL

Average visibility - Oconee, IL

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

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