Climate and monthly weather forecast
Decatur, AR

Weather in January

January, like December, is a frosty winter month in Decatur, Arkansas, with an average temperature varying between 28.4°F (-2°C) and 44.4°F (6.9°C). The coldest month is January, with an average high-temperature of 44.4°F (6.9°C) and an average low-temperature of 28.4°F (-2°C). Weather in January »

Weather in February

February, the last month of the winter in Decatur, is another chilly month, with an average temperature varying between 48.6°F (9.2°C) and 32°F (0°C). In Decatur, the average high-temperature in February is essentially the same as in January - a still chilly 48.6°F (9.2°C). Weather in February »

Weather in March

March, the first month of the spring in Decatur, is a mild month, with an average temperature ranging between min 41°F (5°C) and max 59°F (15°C). In Decatur, the average high-temperature in March increases from a frosty 48.6°F (9.2°C) in February to a moderate 59°F (15°C). Weather in March »

Weather in April

April is a pleasant spring month in Decatur, Arkansas, with an average temperature ranging between min 49.1°F (9.5°C) and max 68.4°F (20.2°C). In April, the average high-temperature rises from a mild 59°F (15°C) in March to an agreeable 68.4°F (20.2°C). Weather in April »

Weather in May

May, the last month of the spring in Decatur, is a warm month, with temperature in the range of an average high of 76.6°F (24.8°C) and an average low of 57.6°F (14.2°C). In May, the average high-temperature slightly increases from an agreeable 68.4°F (20.2°C) in April to a warm 76.6°F (24.8°C). Weather in May »

Weather in June

The first month of the summer, June, is a tropical month in Decatur, Arkansas, with an average temperature fluctuating between 87.3°F (30.7°C) and 66.9°F (19.4°C). In June, the average high-temperature rises from a warm 76.6°F (24.8°C) in May to a tropical 87.3°F (30.7°C). Weather in June »

Weather in July

July, the same as June, in Decatur, Arkansas, is another tropical summer month, with an average temperature ranging between max 90.5°F (32.5°C) and min 69.6°F (20.9°C). The warmest month is July, with an average high-temperature of 90.5°F (32.5°C) and an average low-temperature of 69.6°F (20.9°C). The average heat index in July is evaluated at an extremely hot 108.1°F (42.3°C). Weather in July »

Weather in August

The last month of the summer, August, is another hot month in Decatur, Arkansas, with an average temperature fluctuating between 68.2°F (20.1°C) and 88.9°F (31.6°C). In August, the average high-temperature is relatively the same as in July - a still hot 88.9°F (31.6°C). Weather in August »

Weather in September

September, the first month of the autumn in Decatur, is still a warm month, with an average temperature ranging between min 61.5°F (16.4°C) and max 81.7°F (27.6°C). In Decatur, the average high-temperature in September marginally drops from a tropical 88.9°F (31.6°C) in August to a moderately hot 81.7°F (27.6°C). Weather in September »

Weather in October

October, the same as September, in Decatur, Arkansas, is an agreeable autumn month, with an average temperature varying between 49.8°F (9.9°C) and 68.9°F (20.5°C). In October, the average high-temperature drops from a warm 81.7°F (27.6°C) in September to an agreeable 68.9°F (20.5°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a moderate month in Decatur, Arkansas, with temperature in the range of an average high of 57°F (13.9°C) and an average low of 39.9°F (4.4°C). In November, the average high-temperature decreases from a pleasant 68.9°F (20.5°C) in October to a moderate 57°F (13.9°C). Weather in November »

Weather in December

December, the first month of the winter in Decatur, is also a frosty month, with an average temperature fluctuating between 32°F (0°C) and 46.6°F (8.1°C). In December, the average high-temperature decreases from a moderate 57°F (13.9°C) in November to a frosty 46.6°F (8.1°C). Weather in December »
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FAQ

What is the coldest month in Decatur?

January is the coldest month, with an average high-temperature of 44.4°F (6.9°C) and an average low-temperature of 28.4°F (-2°C).

How many days does it rain in Decatur?

Throughout the year, there are 139.7 rainfall days, and 31.02" (788mm) of precipitation is accumulated.

When does it snow in Decatur?

Months with snowfall in Decatur are January through May, November and December.

How much does it snow in Decatur?

Throughout the year, in Decatur, Arkansas, there are 13.9 snowfall days, and 4.8" (122mm) of snow is accumulated.

What is the month with the least sunshine in Decatur?

January and December, with an average of 5.4h of sunshine, are months with the least sunshine in Decatur, Arkansas.

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

The months with the lowest UV index in Decatur are January and December, with an average maximum UV index of 2.

What is the driest month in Decatur?

The month with the least rainfall in Decatur is February, when the rain falls for 9.5 days and typically collects 1.89" (48mm) of precipitation.

What is the snowiest month in Decatur?

February is the month with the most snowfall in Decatur. Snow falls for 4.7 days and accumulates 1.46" (37mm) of snow.

When is Daylight Saving Time (DST) in Decatur?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts in Decatur, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from CDT to CST.

What is the most humid month in Decatur?

With an average relative humidity of 77%, May is the most humid month in Decatur.

What is the rainiest month in Decatur?

May is the month with the most rainfall. Rain falls for 15.5 days and accumulates 4.37" (111mm) of precipitation.

When it does not snow in Decatur?

In Decatur, snow does not fall in June through October.

When are the longest days in Decatur?

The month with the longest days in Decatur, Arkansas, is June, with an average of 14h and 36min of daylight.

What is the warmest month in Decatur?

The warmest month is July, with an average high-temperature of 90.5°F (32.5°C) and an average low-temperature of 69.6°F (20.9°C).

What month has the most sunshine in Decatur?

July has the most sunshine of the year, with an average of 10.8h of sunshine.

When is the highest UV index in Decatur?

The month with the highest UV index in Decatur is July, with an average maximum UV index of 7.

What is the least humid month in Decatur?

With an average relative humidity of 70%, October is the least humid month in Decatur, Arkansas.

What is the month with the shortest days in Decatur?

December has the shortest days of the year, with an average of 9h and 44min of daylight.

Average pressure
Decatur, AR

Average pressure - Decatur, AR

The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are April and June (29.93"Hg).

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Average wind speed
Decatur, AR

Average wind speed - Decatur, AR

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).

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Average rainfall
Decatur, AR

Average rainfall - Decatur, AR

The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is February (1.89").

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Average rainfall days
Decatur, AR

Average rainfall days - Decatur, AR

The month with the highest number of rainy days is May (15.5 days).
The months with the least rainy days are January and November (8.5 days).

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Average snowfall
Decatur, AR

Average snowfall - Decatur, AR

The month with the highest snowfall is February (1.46").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days
Decatur, AR

Average snowfall days - Decatur, AR

The month with the highest number of snowfall days is February (4.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Decatur, AR

Average daylight / Average sunshine - Decatur, AR

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 44min).

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).

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Average sunshine days
Decatur, AR

Average sunshine days - Decatur, AR

The month with the most sunshine days is December (19.2 days).
The months with the least sunshine days are March and April (13.3 days).

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Average visibility
Decatur, AR

Average visibility - Decatur, AR

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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