Climate and monthly weather forecast
Stockton, IL

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Weather in January

January, the same as December, in Stockton, Illinois, is another subzero cold winter month, with an average temperature varying between 12.7°F (-10.7°C) and 25.2°F (-3.8°C). January is the coldest month, with the temperature often reaching an average high of 25.2°F (-3.8°C) and an average low of 12.7°F (-10.7°C). Weather in January »

Weather in February

February, the last month of the winter in Stockton, is another freezing cold month, with temperature in the range of an average low of 16.2°F (-8.8°C) and an average high of 29.3°F (-1.5°C). As Stockton steps into February, the average high-temperature is measured at a still freezing cold 29.3°F (-1.5°C), displaying minor differences from January's 25.2°F (-3.8°C). Weather in February »

Weather in March

March, the first month of the spring in Stockton, is a frosty month, with an average temperature ranging between min 28.8°F (-1.8°C) and max 43.7°F (6.5°C). The shift from February to March is characterized by a clear increase in the average high-temperature, escalating from a subzero cold 29.3°F (-1.5°C) to a chilly 43.7°F (6.5°C). Weather in March »

Weather in April

April is a moderate spring month in Stockton, Illinois, with an average temperature varying between 39°F (3.9°C) and 56.1°F (13.4°C). The start of April brings a rise in the average high-temperature, moving from a frosty 43.7°F (6.5°C) in March to a mild 56.1°F (13.4°C). Weather in April »

Weather in May

The last month of the spring, May, is an enjoyable month in Stockton, Illinois, with temperature in the range of an average low of 50.5°F (10.3°C) and an average high of 67.6°F (19.8°C). Stockton experiences a temperature shift with the start of May, with average high-temperatures moving from a moderate 56.1°F (13.4°C) in April to a comfortable 67.6°F (19.8°C). Weather in May »

Weather in June

The first month of the summer, June, is a warm month in Stockton, Illinois, with temperature in the range of an average high of 76.5°F (24.7°C) and an average low of 59.5°F (15.3°C). Stockton in June observes a minor temperature shift, with average high-temperatures adjusting from a refreshing 67.6°F (19.8°C) in May to a warm 76.5°F (24.7°C). Weather in June »

Weather in July

July, like June, in Stockton, Illinois, is another warm summer month, with an average temperature fluctuating between 63.1°F (17.3°C) and 79.5°F (26.4°C). July, recording an average high temperature of 79.5°F (26.4°C) and a low temperature of 63.1°F (17.3°C), is Stockton's warmest month. Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Stockton, Illinois, with an average temperature varying between 78.4°F (25.8°C) and 60.6°F (15.9°C). Stockton experiences a minor change to a still warm 78.4°F (25.8°C) in average high-temperature during August, closely reflecting July. Weather in August »

Weather in September

The first month of the autumn, September, is still a pleasant month in Stockton, Illinois, with an average temperature varying between 53.8°F (12.1°C) and 72.9°F (22.7°C). Stockton's September weather shows a modest shift in high-temperatures, falling from August's warm 78.4°F (25.8°C) to a pleasant 72.9°F (22.7°C). Weather in September »

Weather in October

October, like September, is another mild autumn month in Stockton, Illinois, with temperature in the range of an average high of 58.1°F (14.5°C) and an average low of 42.6°F (5.9°C). In Stockton, the average high-temperature in October significantly decreases from an agreeable 72.9°F (22.7°C) in September to a moderate 58.1°F (14.5°C). Weather in October »

Weather in November

November, the last month of the autumn in Stockton, is another chilly month, with an average temperature fluctuating between 31.1°F (-0.5°C) and 44.1°F (6.7°C). As October transitions to November, the average high-temperature falls from a refreshing 58.1°F (14.5°C) to a frosty 44.1°F (6.7°C). Weather in November »

Weather in December

The first month of the winter, December, is also a subzero cold month in Stockton, Illinois, with temperature in the range of an average high of 31.6°F (-0.2°C) and an average low of 21.4°F (-5.9°C). With December's onset, the average high-temperature recedes from November's chilly 44.1°F (6.7°C) to a freezing cold 31.6°F (-0.2°C). Weather in December »
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Frequently asked questions

What is the coldest time of year in Stockton?

January, recording an average high temperature of 25.2°F (-3.8°C) and a low temperature of 12.7°F (-10.7°C), is Stockton's coldest month.

What is the most humid month in Stockton?

The most humid month in Stockton, Illinois, is January, with an average relative humidity of 87%.

What is the driest month in Stockton?

The months with the least rainfall are January and February Rain falls for 4.8 days and accumulates 1.26" (32mm) of rain.

How many days does it rain in Stockton?

Throughout the year, in Stockton, Illinois, there are 142 rainfall days, and 27.95" (710mm) of precipitation is accumulated.

When does it snow in Stockton?

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

When does it snow the most in Stockton?

The month with the most snowfall in Stockton is January, when snow falls for 12.5 days and typically aggregates up to 4.84" (123mm) of snow.

How much does it snow in Stockton?

In Stockton, during the entire year, snow falls for 45.3 days and aggregates up to 15.75" (400mm) of snow.

What is the month with the least sunshine in Stockton?

January has the least sunshine of the year, with an average of 3.6h of sunshine.

What are the months with the lowest UV index in Stockton?

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

When is Daylight Saving Time (DST) in Stockton?

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 rainiest month in Stockton?

The wettest months in Stockton are May and June, with an average 3.66" (93mm) of rainfall.

When it does not snow in Stockton?

In Stockton, Illinois, snow does not fall in May through September.

When are the longest days in Stockton?

June has the longest days of the year in Stockton, Illinois, with an average of 15h and 12min of daylight.

What month is the hottest in Stockton?

The warmest month is July, with an average high-temperature of 79.5°F (26.4°C) and an average low-temperature of 63.1°F (17.3°C).

What is the month with the most sunshine in Stockton?

The months with the most sunshine in Stockton, Illinois, are July and August, with an average of 9.7h of sunshine.

When is the highest UV index in Stockton?

July is the month with the highest UV index in Stockton, Illinois, with an average maximum UV index of 6.

What is the least humid month in Stockton?

The least humid month is October, with an average relative humidity of 75%.

What is the month with the shortest days in Stockton?

With an average of 9h and 6min of daylight, December has the shortest days of the year in Stockton.

Average temperature
Stockton, IL

Average temperature - Stockton, IL

The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (25.2°F).

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (12.7°F).

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Average pressure
Stockton, IL

Average pressure - Stockton, IL

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed
Stockton, IL

Average wind speed - Stockton, IL

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

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Average rainfall
Stockton, IL

Average rainfall - Stockton, IL

The wettest months (with the highest rainfall) are May and June (3.66").
The driest months (with the least rainfall) are January and February (1.26").

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Average rainfall days
Stockton, IL

Average rainfall days - Stockton, IL

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (4.8 days).

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Average snowfall
Stockton, IL

Average snowfall - Stockton, IL

The month with the highest snowfall is January (4.84").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days
Stockton, IL

Average snowfall days - Stockton, IL

The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Stockton, IL

Average daylight / Average sunshine - Stockton, 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 6min).

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

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Average sunshine days
Stockton, IL

Average sunshine days - Stockton, IL

The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is June (10.2 days).

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Average visibility
Stockton, IL

Average visibility - Stockton, IL

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

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Stockton, Illinois, USA

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