Climate and monthly weather forecast
Astoria, IL

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Weather in January

January, like December, in Astoria, Illinois, is an icy winter month, with an average temperature varying between 20.3°F (-6.5°C) and 32.4°F (0.2°C). The coldest month is January, with an average high-temperature of 32.4°F (0.2°C) and an average low-temperature of 20.3°F (-6.5°C). Weather in January »

Weather in February

February, the last month of the winter in Astoria, is also an icy month, with an average temperature ranging between max 37.4°F (3°C) and min 23.9°F (-4.5°C). Astoria's February reports an average high-temperature of a still cold 37.4°F (3°C), exhibiting a minor difference from January. Weather in February »

Weather in March

The first month of the spring, March, is a cool month in Astoria, Illinois, with an average temperature fluctuating between 35.2°F (1.8°C) and 50.5°F (10.3°C). March brings a rise in the average high-temperature, transitioning from February's cold 37.4°F (3°C) to a fresh 50.5°F (10.3°C). Weather in March »

Weather in April

April in Astoria, Illinois, is an enjoyable spring month, with an average temperature ranging between max 62.2°F (16.8°C) and min 45°F (7.2°C). The arrival of April sees a shift in the average high-temperature, moving from a fresh 50.5°F (10.3°C) in March to an enjoyable 62.2°F (16.8°C). Weather in April »

Weather in May

May, the last month of the spring in Astoria, is an agreeable month, with an average temperature fluctuating between 72.1°F (22.3°C) and 55.4°F (13°C). Astoria experiences a temperature shift with the start of May, with average high-temperatures moving from a comfortable 62.2°F (16.8°C) in April to an agreeable 72.1°F (22.3°C). Weather in May »

Weather in June

June, the first month of the summer in Astoria, is a warm month, with temperature in the range of an average low of 64°F (17.8°C) and an average high of 80.8°F (27.1°C). In Astoria, the onset of June comes with a modest high-temperature shift, transitioning from May's agreeable 72.1°F (22.3°C) to a warm 80.8°F (27.1°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Astoria, Illinois, with temperature in the range of an average low of 66.4°F (19.1°C) and an average high of 83.1°F (28.4°C). Astoria experiences its highest temperatures in July, with an average peak of 83.1°F (28.4°C) and a low of 66.4°F (19.1°C). For most parts of July, the heat index is computed to be a tropical 91.4°F (33°C). Weather in July »

Weather in August

August, the last month of the summer in Astoria, is another warm month, with an average temperature varying between 64.2°F (17.9°C) and 82.9°F (28.3°C). At the start of August, Astoria's average high-temperature reaches a still moderately hot 82.9°F (28.3°C), subtly different from the preceding month. Weather in August »

Weather in September

September, the first month of the autumn in Astoria, is still a warm month, with an average temperature fluctuating between 77.5°F (25.3°C) and 58.1°F (14.5°C). September signals a slight drop in average high-temperature, sliding from August's moderately hot 82.9°F (28.3°C) to a still warm 77.5°F (25.3°C). Weather in September »

Weather in October

October, the same as September, is another enjoyable autumn month in Astoria, Illinois, with temperature in the range of an average high of 63.5°F (17.5°C) and an average low of 46.9°F (8.3°C). As October begins, there is a decrease in the average high-temperature, falling from a warm 77.5°F (25.3°C) in September to an enjoyable 63.5°F (17.5°C). Weather in October »

Weather in November

November, the last month of the autumn in Astoria, is also a frosty month, with an average temperature varying between 49.6°F (9.8°C) and 35.4°F (1.9°C). November indicates a shift in the average high-temperature, from October's enjoyable 63.5°F (17.5°C) to a frosty 49.6°F (9.8°C). Weather in November »

Weather in December

December, the first month of the winter in Astoria, is still a cold month, with an average temperature varying between 38.3°F (3.5°C) and 26.6°F (-3°C). In the transition to December, Astoria observes a drop in the average high-temperature, moving from a chilly 49.6°F (9.8°C) in November to a cold 38.3°F (3.5°C). Weather in December »
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest time of year in Astoria?

January tends to be the coldest month in Astoria, Illinois, with temperatures averaging a daily high of 32.4°F (0.2°C) and a low of 20.3°F (-6.5°C).

How many days does it rain in Astoria?

Throughout the year, in Astoria, Illinois, there are 146.5 rainfall days, and 29.41" (747mm) of precipitation is accumulated.

When does it snow in Astoria?

Months with snowfall in Astoria, Illinois, are January through April, October through December.

What is the snowiest month in Astoria?

January is the month with the most snowfall in Astoria, Illinois. Snow falls for 8.3 days and accumulates 4.09" (104mm) of snow.

How many days does it snow in Astoria?

Throughout the year, there are 27.8 snowfall days, and 11.54" (293mm) of snow is accumulated.

What is the month with the least sunshine in Astoria?

The month with the least sunshine in Astoria, Illinois, is January, with an average of 4.3h of sunshine.

When is the lowest UV index in Astoria?

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

When is Daylight Saving Time (DST) in Astoria?

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 Astoria?

May is the month with the most rainfall in Astoria, Illinois. Rain falls for 18.8 days and accumulates 4.02" (102mm) of precipitation.

When it does not snow in Astoria?

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

When are the longest days in Astoria?

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

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

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

What is the warmest month in Astoria?

Astoria's warmest month, July, generally records average temperatures ranging from a high of 83.1°F (28.4°C) to a low of 66.4°F (19.1°C).

What is the most humid month in Astoria?

The most humid month is July, with an average relative humidity of 82%.

What month has the most sunshine in Astoria?

With an average of 10.3h of sunshine, July has the most sunshine of the year in Astoria.

What is the least humid month in Astoria?

With an average relative humidity of 71%, October is the least humid month in Astoria, Illinois.

What is the driest month in Astoria?

December is the month with the least rainfall in Astoria. Rain falls for 7.4 days and accumulates 1.46" (37mm) of precipitation.

What is the month with the shortest days in Astoria?

The month with the shortest days is December, with an average of 9h and 24min of daylight.

Average temperature
Astoria, IL

Average temperature - Astoria, 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 (32.4°F).

The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).

Average pressure
Astoria, IL

Average pressure - Astoria, IL

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed
Astoria, IL

Average wind speed - Astoria, IL

The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.3mph).

Average humidity
Astoria, IL

Average humidity - Astoria, IL

The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (71%).

Average rainfall
Astoria, IL

Average rainfall - Astoria, IL

The wettest month (with the highest rainfall) is May (4.02").
The driest month (with the least rainfall) is December (1.46").

Average rainfall days
Astoria, IL

Average rainfall days - Astoria, IL

The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is January (6 days).

Average snowfall
Astoria, IL

Average snowfall - Astoria, IL

The month with the highest snowfall is January (4.09").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days
Astoria, IL

Average snowfall days - Astoria, IL

The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight / Average sunshine
Astoria, IL

Average daylight / Average sunshine - Astoria, 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 24min).

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

Average sunshine days
Astoria, IL

Average sunshine days - Astoria, IL

The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (9.6 days).

Average UV index
Astoria, IL

Average UV index - Astoria, 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).

Average visibility
Astoria, IL

Average visibility - Astoria, 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).

Astoria, Illinois, USA

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