Climate and monthly weather forecast
Sugar Grove, IL

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Weather in January

January, like December, is a freezing cold winter month in Sugar Grove, Illinois, with temperature in the range of an average high of 27.9°F (-2.3°C) and an average low of 15.8°F (-9°C). Sugar Grove's January weather, marked by an average high temperature of 27.9°F (-2.3°C) and an average low temperature of 15.8°F (-9°C), is the coldest in the year. Weather in January »

Weather in February

February, the last month of the winter in Sugar Grove, is a wintry month, with an average temperature varying between 19°F (-7.2°C) and 32°F (0°C). The advent of February reveals an average high-temperature of a cold 32°F (0°C), showing minimal difference from the prior month. Weather in February »

Weather in March

March, the first month of the spring in Sugar Grove, is a frosty month, with an average temperature fluctuating between 30.7°F (-0.7°C) and 45.5°F (7.5°C). In Sugar Grove, the average high-temperature in March rises, from a cold 32°F (0°C) in February, to a chilly 45.5°F (7.5°C). Weather in March »

Weather in April

April is a moderate spring month in Sugar Grove, Illinois, with an average temperature ranging between max 57°F (13.9°C) and min 40.1°F (4.5°C). With the onset of April, Sugar Grove's weather sees a temperature rise, transitioning from a chilly 45.5°F (7.5°C) in March to a refreshing 57°F (13.9°C). Weather in April »

Weather in May

May, the last month of the spring in Sugar Grove, is an agreeable month, with an average temperature ranging between max 69.1°F (20.6°C) and min 51.8°F (11°C). As May arrives, a rise in the average high-temperature is observed, moving from a moderate 57°F (13.9°C) in April to a pleasant 69.1°F (20.6°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Sugar Grove, Illinois, with an average temperature ranging between min 60.6°F (15.9°C) and max 78.1°F (25.6°C). In Sugar Grove, the average high-temperature in June increases from an agreeable 69.1°F (20.6°C) in May to a warm 78.1°F (25.6°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Sugar Grove, Illinois, with an average temperature ranging between max 80.6°F (27°C) and min 63.3°F (17.4°C). July, recording an average high temperature of 80.6°F (27°C) and a low temperature of 63.3°F (17.4°C), is Sugar Grove's warmest month. July's mean heat index is calculated 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 Sugar Grove, Illinois, with an average temperature ranging between min 61.7°F (16.5°C) and max 79.2°F (26.2°C). Transitioning into August, Sugar Grove experiences an average high-temperature of a still moderately hot 79.2°F (26.2°C), marking a minor shift from the preceding month. Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Sugar Grove, Illinois, with temperature in the range of an average low of 55.4°F (13°C) and an average high of 73.8°F (23.2°C). The commencement of September indicates a gentle shift in the average high-temperature, receding from August's 79.2°F (26.2°C) to a still moderately hot 73.8°F (23.2°C). Weather in September »

Weather in October

October, the same as September, in Sugar Grove, Illinois, is another refreshing autumn month, with an average temperature ranging between min 44.4°F (6.9°C) and max 60.3°F (15.7°C). In Sugar Grove, the average high-temperature in October drops from a warm 73.8°F (23.2°C) in September to a refreshing 60.3°F (15.7°C). Weather in October »

Weather in November

November, the last month of the autumn in Sugar Grove, is another chilly month, with temperature in the range of an average low of 32.7°F (0.4°C) and an average high of 45.5°F (7.5°C). The onset of November brings a distinct decrease in the average high-temperature, receding from a mild 60.3°F (15.7°C) in October to a chilly 45.5°F (7.5°C). Weather in November »

Weather in December

The first month of the winter, December, is also a wintry month in Sugar Grove, Illinois, with an average temperature fluctuating between 23.7°F (-4.6°C) and 34.2°F (1.2°C). In Sugar Grove, the beginning of December is marked by a lowered average high-temperature, shifting from November's frosty 45.5°F (7.5°C) to a wintry 34.2°F (1.2°C). Weather in December »
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Frequently asked questions

What is the coldest month in Sugar Grove?

The coldest period in Sugar Grove is January, when temperatures fluctuate between an average high of 27.9°F (-2.3°C) and a low of 15.8°F (-9°C).

What are the most humid months in Sugar Grove?

The months with the highest humidity are January, July and August, with an average relative humidity of 84%.

How much does it rain in Sugar Grove?

In Sugar Grove, Illinois, during the entire year, the rain falls for 156.4 days and collects up to 30.98" (787mm) of precipitation.

When does it snow in Sugar Grove?

Months with snowfall in Sugar Grove are January through May, October through December.

What is the snowiest month in Sugar Grove?

The month with the most snowfall is January, when snow falls for 13.1 days and typically aggregates up to 4.65" (118mm) of snow.

How much does it snow in Sugar Grove?

In Sugar Grove, during the entire year, snow falls for 44.6 days and aggregates up to 15.2" (386mm) of snow.

What is the month with the least sunshine in Sugar Grove?

The month with the least sunshine is January, with an average of 3.7h of sunshine.

When is the lowest UV index in Sugar Grove?

The months with the lowest UV index in Sugar Grove, Illinois, are January and December, with an average maximum UV index of 1.

When is Daylight Saving Time (DST) in Sugar Grove?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Sugar Grove, 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 in Sugar Grove?

The month with the most rainfall in Sugar Grove is May, when the rain falls for 18 days and typically aggregates up to 4.33" (110mm) of precipitation.

When it does not snow in Sugar Grove?

June through September are months without snowfall.

When are the longest days in Sugar Grove?

With an average of 15h and 12min of daylight, June has the longest days of the year in Sugar Grove.

When is the highest UV index in Sugar Grove?

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

What month is the hottest in Sugar Grove?

The warmest time of the year in Sugar Grove, Illinois, is July, with temperatures averaging a high of 80.6°F (27°C) and a low of 63.3°F (17.4°C).

What month has the most sunshine in Sugar Grove?

August has the most sunshine of the year in Sugar Grove, with an average of 9.6h of sunshine.

What is the least humid month in Sugar Grove?

With an average relative humidity of 74%, October is the least humid month.

What is the driest month in Sugar Grove?

The month with the least rainfall in Sugar Grove is December, when the rain falls for 7.8 days and typically collects 1.57" (40mm) of precipitation.

What is the month with the shortest days in Sugar Grove?

The month with the shortest days is December, with an average of 9h and 12min of daylight.

Average temperature
Sugar Grove, IL

Average temperature - Sugar Grove, IL

The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (27.9°F).

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).

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Average pressure
Sugar Grove, IL

Average pressure - Sugar Grove, IL

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed
Sugar Grove, IL

Average wind speed - Sugar Grove, IL

The windiest months (with the highest average wind speed) are January, February and April (9.8mph).
The calmest month (with the lowest average wind speed) is August (6mph).

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Average humidity
Sugar Grove, IL

Average humidity - Sugar Grove, IL

The months with the highest relative humidity are January, July and August (84%).
The month with the lowest relative humidity is October (74%).

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Average rainfall
Sugar Grove, IL

Average rainfall - Sugar Grove, IL

The wettest month (with the highest rainfall) is May (4.33").
The driest month (with the least rainfall) is December (1.57").

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Average rainfall days
Sugar Grove, IL

Average rainfall days - Sugar Grove, IL

The month with the highest number of rainy days is July (18.2 days).
The month with the least rainy days is February (6 days).

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Average snowfall
Sugar Grove, IL

Average snowfall - Sugar Grove, IL

The month with the highest snowfall is January (4.65").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Sugar Grove, IL

Average snowfall days - Sugar Grove, IL

The month with the highest number of snowfall days is January (13.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Sugar Grove, IL

Average daylight / Average sunshine - Sugar Grove, IL

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

The month with the most sunshine is August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days
Sugar Grove, IL

Average sunshine days - Sugar Grove, IL

The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is April (10.3 days).

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Average UV index
Sugar Grove, IL

Average UV index - Sugar Grove, 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 and December (UV index 1).

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Average visibility
Sugar Grove, IL

Average visibility - Sugar Grove, IL

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

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Sugar Grove, Illinois, USA

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