Climate and monthly weather forecast
Frankfort, IL

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Weather in January

January, like December, is a freezing cold winter month in Frankfort, Illinois, with an average temperature varying between 29.7°F (-1.3°C) and 18.7°F (-7.4°C). In Frankfort, the month of January is known for its lowest average temperatures, reaching a high of 29.7°F (-1.3°C) and a low of 18.7°F (-7.4°C). Weather in January »

Weather in February

The last month of the winter, February, is an icy month in Frankfort, Illinois, with an average temperature varying between 33.1°F (0.6°C) and 21°F (-6.1°C). The commencement of February notes an average high-temperature of an icy 33.1°F (0.6°C), exhibiting little difference from the previous month. Weather in February »

Weather in March

The first month of the spring, March, is a chilly month in Frankfort, Illinois, with an average temperature varying between 32.4°F (0.2°C) and 45.9°F (7.7°C). The shift into March brings an increase in the average high-temperature, moving from a cold 33.1°F (0.6°C) in February to a chilly 45.9°F (7.7°C). Weather in March »

Weather in April

April is a mild spring month in Frankfort, Illinois, with an average temperature fluctuating between 57°F (13.9°C) and 41.7°F (5.4°C). As March transitions into April, Frankfort sees a rise in the average high-temperature, moving from a frosty 45.9°F (7.7°C) to a mild 57°F (13.9°C). Weather in April »

Weather in May

May, the last month of the spring in Frankfort, is an agreeable month, with an average temperature fluctuating between 52.5°F (11.4°C) and 68.7°F (20.4°C). May's onset is marked by a temperature increase, moving from a refreshing 57°F (13.9°C) in April to a pleasant 68.7°F (20.4°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Frankfort, Illinois, with temperature in the range of an average low of 61.5°F (16.4°C) and an average high of 78.3°F (25.7°C). In June, the average high-temperature increases from an agreeable 68.7°F (20.4°C) in May to a moderately hot 78.3°F (25.7°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Frankfort, Illinois, with an average temperature varying between 65.8°F (18.8°C) and 81.9°F (27.7°C). July, noted for its average high-temperature of 81.9°F (27.7°C) and an average low-temperature of 65.8°F (18.8°C), is considered the warmest month. The heat index value during July is computed to be a hot 87.8°F (31°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Frankfort, Illinois, with an average temperature varying between 64.2°F (17.9°C) and 79.9°F (26.6°C). August's climate shows a minor adjustment in average high-temperatures to a still moderately hot 79.9°F (26.6°C) from July's 81.9°F (27.7°C). Weather in August »

Weather in September

September, the first month of the autumn in Frankfort, is still a warm month, with temperature in the range of an average high of 73.9°F (23.3°C) and an average low of 57.9°F (14.4°C). With the onset of September, Frankfort's average high-temperature slightly adjusts, moderately receding from August's moderately hot 79.9°F (26.6°C) to a still warm 73.9°F (23.3°C). Weather in September »

Weather in October

October, the same as September, is another enjoyable autumn month in Frankfort, Illinois, with an average temperature varying between 61.2°F (16.2°C) and 46.8°F (8.2°C). In Frankfort, entering October brings a temperature decrement, reducing from September's moderately hot 73.9°F (23.3°C) to an enjoyable 61.2°F (16.2°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in Frankfort, Illinois, with an average temperature fluctuating between 34.5°F (1.4°C) and 46.9°F (8.3°C). As November commences, the average high-temperature shows a reduction, transitioning from a refreshing 61.2°F (16.2°C) in October to a frosty 46.9°F (8.3°C). Weather in November »

Weather in December

The first month of the winter, December, is still a cold month in Frankfort, Illinois, with an average temperature varying between 35.4°F (1.9°C) and 25.7°F (-3.5°C). During the transition into December, Frankfort observes a decrease in the average high-temperature, falling from a frosty 46.9°F (8.3°C) in November to an icy 35.4°F (1.9°C). Weather in December »
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Frequently asked questions

What time of the year is the coldest in Frankfort?

In Frankfort, January is the coldest month, with temperatures averaging a high of 29.7°F (-1.3°C) and a low of 18.7°F (-7.4°C).

What is the driest month in Frankfort?

January, February and December are months with the least rain in Frankfort when the rain falls for 4.5 days and typically aggregates up to 0.55" (14mm) of rain.

How much does it rain in Frankfort?

In Frankfort, during the entire year, the rain falls for 111.8 days and collects up to 11.18" (284mm) of precipitation.

When does it snow in Frankfort?

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

When does it snow the most in Frankfort?

January is the month with the most snowfall in Frankfort, Illinois. Snow falls for 10.3 days and accumulates 1.3" (33mm) of snow.

How much does it snow in Frankfort?

In Frankfort, during the entire year, snow falls for 34.2 days and aggregates up to 4.8" (122mm) of snow.

What is the month with the least sunshine in Frankfort?

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

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

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

What is the most humid month in Frankfort?

The most humid month in Frankfort is February, with an average relative humidity of 83%.

When is Daylight Saving Time (DST) in Frankfort?

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

The month with the most rainfall in Frankfort, Illinois, is May, when the rain falls for 12.4 days and typically aggregates up to 1.54" (39mm) of precipitation.

When it does not snow in Frankfort?

In Frankfort, snow does not fall in May through September.

When are the longest days in Frankfort?

June has the longest days of the year in Frankfort, with an average of 15h and 6min of daylight.

When is the highest UV index in Frankfort?

The months with the highest UV index are June and July, with an average maximum UV index of 6.

What part of the year is the hottest in Frankfort?

July, recording an average high temperature of 81.9°F (27.7°C) and a low temperature of 65.8°F (18.8°C), is Frankfort's warmest month.

What month has the most sunshine in Frankfort?

With an average of 10h of sunshine, August has the most sunshine of the year in Frankfort, Illinois.

What is the least humid month in Frankfort?

The least humid month is October, with an average relative humidity of 73%.

What is the month with the shortest days in Frankfort?

With an average of 9h and 12min of daylight, December has the shortest days of the year.

Average temperature
Frankfort, IL

Average temperature - Frankfort, IL

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (29.7°F).

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).

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Average pressure
Frankfort, IL

Average pressure - Frankfort, 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
Frankfort, IL

Average wind speed - Frankfort, IL

The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

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Average rainfall
Frankfort, IL

Average rainfall - Frankfort, IL

The wettest month (with the highest rainfall) is May (1.54").
The driest months (with the least rainfall) are January, February and December (0.55").

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Average rainfall days
Frankfort, IL

Average rainfall days - Frankfort, IL

The month with the highest number of rainy days is July (14.1 days).
The month with the least rainy days is February (4.1 days).

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Average snowfall
Frankfort, IL

Average snowfall - Frankfort, IL

The month with the highest snowfall is January (1.3").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days
Frankfort, IL

Average snowfall days - Frankfort, IL

The month with the highest number of snowfall days is January (10.3 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
Frankfort, IL

Average daylight / Average sunshine - Frankfort, IL

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days
Frankfort, IL

Average sunshine days - Frankfort, IL

The month with the most sunshine days is November (20.7 days).
The month with the least sunshine days is June (13.1 days).

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Average visibility
Frankfort, IL

Average visibility - Frankfort, 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).

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Frankfort, Illinois, USA

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