Climate and monthly weather forecast
Chillicothe, IA

Weather in January

January, the same as December, in Chillicothe, Iowa, is another subzero cold winter month, with an average temperature ranging between min 16.2°F (-8.8°C) and max 29.3°F (-1.5°C). With an average high-temperature of 29.3°F (-1.5°C) and an average low-temperature of 16.2°F (-8.8°C), January is the coldest month. Weather in January »

Weather in February

February, the last month of the winter in Chillicothe, is a wintry month, with an average temperature fluctuating between 19.4°F (-7°C) and 33.3°F (0.7°C). In February, the average high-temperature is practically the same as in January - a cold 33.3°F (0.7°C). Weather in February »

Weather in March

The first month of the spring, March, is a chilly month in Chillicothe, Iowa, with an average temperature varying between 48.2°F (9°C) and 33.1°F (0.6°C). In March, the average high-temperature increases considerably from a wintry 33.3°F (0.7°C) in February to a frosty 48.2°F (9°C). Weather in March »

Weather in April

April in Chillicothe, Iowa, is a moderate spring month, with an average temperature ranging between max 60.1°F (15.6°C) and min 42.6°F (5.9°C). In Chillicothe, the average high-temperature in April increases from a frosty 48.2°F (9°C) in March to a moderate 60.1°F (15.6°C). Weather in April »

Weather in May

The last month of the spring, May, is a pleasant month in Chillicothe, Iowa, with an average temperature varying between 70°F (21.1°C) and 53.2°F (11.8°C). In Chillicothe, the average high-temperature in May increases from a mild 60.1°F (15.6°C) in April to a pleasant 70°F (21.1°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Chillicothe, Iowa, with an average temperature fluctuating between 79.9°F (26.6°C) and 63.1°F (17.3°C). In June, the average high-temperature increases from an agreeable 70°F (21.1°C) in May to a moderately hot 79.9°F (26.6°C). Weather in June »

Weather in July

July, like June, in Chillicothe, Iowa, is another warm summer month, with an average temperature ranging between max 82.6°F (28.1°C) and min 65.3°F (18.5°C). The warmest month is July, with an average high-temperature of 82.6°F (28.1°C) and an average low-temperature of 65.3°F (18.5°C). The average heat index in July is estimated at a hot 91.4°F (33°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Chillicothe, Iowa, with an average temperature fluctuating between 63.1°F (17.3°C) and 81.7°F (27.6°C). In Chillicothe, the average high-temperature in August is practically the same as in July - a still moderately hot 81.7°F (27.6°C). Weather in August »

Weather in September

September, the first month of the autumn in Chillicothe, is still a warm month, with an average temperature fluctuating between 75.7°F (24.3°C) and 56.5°F (13.6°C). In Chillicothe, Iowa, the average high-temperature in September slightly decreases from a moderately hot 81.7°F (27.6°C) in August to a still warm 75.7°F (24.3°C). Weather in September »

Weather in October

October, like September, in Chillicothe, Iowa, is another enjoyable autumn month, with an average temperature ranging between max 61.7°F (16.5°C) and min 44.8°F (7.1°C). In October, the average high-temperature drops from a warm 75.7°F (24.3°C) in September to a comfortable 61.7°F (16.5°C). Weather in October »

Weather in November

November, the last month of the autumn in Chillicothe, is also a frosty month, with temperature in the range of an average low of 33.6°F (0.9°C) and an average high of 47.8°F (8.8°C). In November, the average high-temperature decreases from a comfortable 61.7°F (16.5°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 also a wintry month in Chillicothe, Iowa, with temperature in the range of an average high of 35.1°F (1.7°C) and an average low of 23.9°F (-4.5°C). In December, the average high-temperature decreases from a frosty 47.8°F (8.8°C) in November to a cold 35.1°F (1.7°C). Weather in December »
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FAQ

What is the coldest month in Chillicothe?

With an average high-temperature of 29.3°F (-1.5°C) and an average low-temperature of 16.2°F (-8.8°C), January is the coldest month in Chillicothe, Iowa.

What is the driest month in Chillicothe?

The month with the least rainfall is January, when the rain falls for 5.2 days and typically collects 1.06" (27mm) of precipitation.

How much does it rain in Chillicothe?

Throughout the year, there are 134.5 rainfall days, and 27.17" (690mm) of precipitation is accumulated.

When does it snow in Chillicothe?

January through May, October through December are months with snowfall in Chillicothe, Iowa.

How many days does it snow in Chillicothe?

Throughout the year, there are 33.5 snowfall days, and 14.17" (360mm) of snow is accumulated.

What is the month with the least sunshine in Chillicothe?

With an average of 4.2h of sunshine, January has the least sunshine of the year in Chillicothe.

What is the month with the lowest UV index in Chillicothe?

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

When does it snow the most in Chillicothe?

The month with the most snowfall is February, when snow falls for 8.3 days and typically aggregates up to 4.17" (106mm) of snow.

When is Daylight Saving Time (DST) in Chillicothe?

On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 5. 2023, at 2:00 am, and the time zone reverts from CDT to CST.

What is the rainiest month in Chillicothe?

May is the month with the most rainfall in Chillicothe, Iowa. Rain falls for 17.3 days and accumulates 4.02" (102mm) of precipitation.

What is the most humid month in Chillicothe?

June is the most humid month in Chillicothe, Iowa, with an average relative humidity of 83%.

When it does not snow in Chillicothe?

June through September are months without snowfall in Chillicothe, Iowa.

When are the longest days in Chillicothe?

With an average of 15h and 5min of daylight, June has the longest days of the year in Chillicothe.

When is the highest UV index in Chillicothe?

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

What is the warmest month in Chillicothe?

The warmest month is July, with an average high-temperature of 82.6°F (28.1°C) and an average low-temperature of 65.3°F (18.5°C).

What month has the most sunshine in Chillicothe?

The month with the most sunshine in Chillicothe is July, with an average of 10.2h of sunshine.

What is the least humid month in Chillicothe?

With an average relative humidity of 72%, October is the least humid month in Chillicothe, Iowa.

What is the month with the shortest days in Chillicothe?

December has the shortest days of the year, with an average of 9h and 17min of daylight.

Average temperature
Chillicothe, IA

Average temperature - Chillicothe, IA

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (29.3°F).

The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).

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Average pressure
Chillicothe, IA

Average pressure - Chillicothe, IA

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed
Chillicothe, IA

Average wind speed - Chillicothe, IA

The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).

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Average rainfall
Chillicothe, IA

Average rainfall - Chillicothe, IA

The wettest month (with the highest rainfall) is May (4.02").
The driest month (with the least rainfall) is January (1.06").

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Average rainfall days
Chillicothe, IA

Average rainfall days - Chillicothe, IA

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (5.2 days).

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Average snowfall
Chillicothe, IA

Average snowfall - Chillicothe, IA

The month with the highest snowfall is February (4.17").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Chillicothe, IA

Average snowfall days - Chillicothe, IA

The month with the highest number of snowfall days is January (10.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Chillicothe, IA

Average daylight / Average sunshine - Chillicothe, IA

The month with the longest days is June (Average daylight: 15h and 5min).
The month with the shortest days is December (Average daylight: 9h and 17min).

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

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Average sunshine days
Chillicothe, IA

Average sunshine days - Chillicothe, IA

The month with the most sunshine days is December (18.9 days).
The month with the least sunshine days is May (11.6 days).

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Average UV index
Chillicothe, IA

Average UV index - Chillicothe, IA

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).

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Average visibility
Chillicothe, IA

Average visibility - Chillicothe, IA

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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