Climate and monthly weather forecast
Sibley, IL

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Weather in January

January, the same as December, in Sibley, Illinois, is a freezing cold winter month, with an average temperature varying between 19.6°F (-6.9°C) and 31.5°F (-0.3°C). January stands out as Sibley's coldest month, with temperatures ranging between an average high of 31.5°F (-0.3°C) and a low of 19.6°F (-6.9°C). Weather in January »

Weather in February

The last month of the winter, February, is a cold month in Sibley, Illinois, with an average temperature fluctuating between 35.8°F (2.1°C) and 22.6°F (-5.2°C). The transition into February shows a subtle variation to a wintry 35.8°F (2.1°C) from January's 31.5°F (-0.3°C) in the average high-temperature. Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in Sibley, Illinois, with an average temperature ranging between max 48.4°F (9.1°C) and min 34.2°F (1.2°C). Sibley's transition into March brings a rise in the average high-temperature, moving from a cold 35.8°F (2.1°C) in February to a chilly 48.4°F (9.1°C). Weather in March »

Weather in April

April is a refreshing spring month in Sibley, Illinois, with an average temperature fluctuating between 44.2°F (6.8°C) and 60.8°F (16°C). April indicates a change in the average high-temperature, moving up from a chilly 48.4°F (9.1°C) in March to an enjoyable 60.8°F (16°C). Weather in April »

Weather in May

The last month of the spring, May, is a pleasant month in Sibley, Illinois, with temperature in the range of an average high of 71.6°F (22°C) and an average low of 55.4°F (13°C). Sibley's transition into May is marked by a temperature shift, moving from a comfortable 60.8°F (16°C) in April to a pleasant 71.6°F (22°C). Weather in May »

Weather in June

June, the first month of the summer in Sibley, is a moderately hot month, with an average temperature varying between 62.8°F (17.1°C) and 79.5°F (26.4°C). The commencement of June sees a minor shift in the average high-temperature, moving from a pleasant 71.6°F (22°C) in May to a moderately hot 79.5°F (26.4°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Sibley, Illinois, with an average temperature ranging between max 80.8°F (27.1°C) and min 64.6°F (18.1°C). July, with its high-temperature average of 80.8°F (27.1°C) and a low-temperature average of 64.6°F (18.1°C), is the warmest month. The average heat index in July is computed to be a tropical 86°F (30°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Sibley, Illinois, with temperature in the range of an average low of 62.8°F (17.1°C) and an average high of 79.7°F (26.5°C). The advent of August sees the average high-temperature at a still moderately hot 79.7°F (26.5°C), subtly shifted from July's 80.8°F (27.1°C). Weather in August »

Weather in September

September, the first month of the autumn in Sibley, is also a moderately hot month, with an average temperature fluctuating between 57.4°F (14.1°C) and 75.7°F (24.3°C). As September unfolds, the average high-temperature reaches a still moderately hot 75.7°F (24.3°C), hinting at a slight fluctuation from the previous month. Weather in September »

Weather in October

October, the same as September, is another comfortable autumn month in Sibley, Illinois, with an average temperature varying between 46.9°F (8.3°C) and 62.4°F (16.9°C). October's arrival comes with a decrease in the average high-temperature, moving from a moderately hot 75.7°F (24.3°C) in September to a refreshing 62.4°F (16.9°C). Weather in October »

Weather in November

November, the last month of the autumn in Sibley, is another chilly month, with an average temperature fluctuating between 35.1°F (1.7°C) and 47.8°F (8.8°C). November is marked by a significant decrease, with the average high-temperature retreating from an enjoyable 62.4°F (16.9°C) in October to a chilly 47.8°F (8.8°C). Weather in November »

Weather in December

The first month of the winter, December, is still a cold month in Sibley, Illinois, with an average temperature fluctuating between 36.5°F (2.5°C) and 27°F (-2.8°C). Sibley's weather in December involves a decrease in the average high-temperature, moving down from November's chilly 47.8°F (8.8°C) to an icy 36.5°F (2.5°C). Weather in December »
Updated: Jun 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month?

January, noted for its average high-temperature of 31.5°F (-0.3°C) and an average low-temperature of 19.6°F (-6.9°C), is considered the coldest month.

How much does it rain?

Throughout the year, there are 126.2 rainfall days, and 14.96" (380mm) of precipitation is accumulated.

When does it snow?

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

When does it snow the most?

The month with the most snowfall is January, when snow falls for 9.3 days and typically aggregates up to 1.38" (35mm) of snow.

How many days does it snow?

Throughout the year, in Sibley, there are 29.4 snowfall days, and 4.69" (119mm) of snow is accumulated.

What is the month with the least sunshine?

January has the least sunshine of the year, with an average of 3.8h of sunshine.

What is the driest month?

The months with the least rainfall are February and December Rain falls for 5.1 days and accumulates 0.75" (19mm) of rain.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Sibley, 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 is the rainiest month?

The month with the most rainfall is May, when the rain falls for 14.9 days and typically aggregates up to 1.93" (49mm) of precipitation.

When it does not snow?

May through September are months without snowfall.

When are the longest days?

The month with the longest days is June, with an average of 15h and 0min of daylight.

What month has the most sunshine?

With an average of 9.8h of sunshine, June has the most sunshine of the year.

What are the months with the highest UV index?

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

What are the warmest months?

Sibley's warmest month, July, registers temperatures that range from a high of 80.8°F (27.1°C) to a low of 64.6°F (18.1°C).

What is the most humid month?

July is the most humid month, with an average relative humidity of 85%.

What is the least humid month?

October is the least humid month, 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 18min of daylight.

When is the lowest UV index?

The month with the lowest UV index is December, with an average maximum UV index of 1.

Average temperature
Sibley, IL

Average temperature - Sibley, IL

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (31.5°F).

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (19.6°F).

Average pressure
Sibley, IL

Average pressure - Sibley, IL

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed
Sibley, IL

Average wind speed - Sibley, IL

The windiest month (with the highest average wind speed) is January (11mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

Average rainfall
Sibley, IL

Average rainfall - Sibley, IL

The wettest month (with the highest rainfall) is May (1.93").
The driest months (with the least rainfall) are February and December (0.75").

Average rainfall days
Sibley, IL

Average rainfall days - Sibley, IL

The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is January (4.8 days).

Average snowfall
Sibley, IL

Average snowfall - Sibley, IL

The month with the highest snowfall is January (1.38").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days
Sibley, IL

Average snowfall days - Sibley, IL

The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight / Average sunshine
Sibley, IL

Average daylight / Average sunshine - Sibley, 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 18min).

The month with the most sunshine is June (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

Average sunshine days
Sibley, IL

Average sunshine days - Sibley, IL

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (10.3 days).

Average visibility
Sibley, IL

Average visibility - Sibley, IL

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

Sibley, Illinois, USA

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