Monthly weather forecast and climate
Decatur, AR

Weather in January

January, the same as December, in Decatur, Arkansas, is a frosty winter month, with average temperature varying between 44.4°F (6.9°C) and 28.4°F (-2°C). 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). Weather in January »

Weather in February

February, the last month of the winter, in Decatur, is another chilly month, with average temperature fluctuating between 48.6°F (9.2°C) and 32°F (0°C). In February, the average high-temperature is almost the same as in January - a still frosty 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 temperature in the range of an average low of 41°F (5°C) and an average high of 59°F (15°C). In Decatur, the average high-temperature rises, 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 in Decatur, Arkansas, is a pleasant spring month, with temperature in the range of an average high of 68.4°F (20.2°C) and an average low of 49.1°F (9.5°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 average temperature fluctuating between 76.6°F (24.8°C) and 57.6°F (14.2°C). In Decatur, the average high-temperature in May marginally rises, from a pleasant 68.4°F (20.2°C) in April, to a moderately hot 76.6°F (24.8°C). Weather in May »

Weather in June

June, the first month of the summer, in Decatur, is a tropical month, with temperature in the range of an average high of 87.3°F (30.7°C) and an average low of 66.9°F (19.4°C). In June, the average high-temperature increases, 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 a hot summer month, with average temperature fluctuating between 90.5°F (32.5°C) and 69.6°F (20.9°C). With an average high-temperature of 90.5°F (32.5°C) and an average low-temperature of 69.6°F (20.9°C), July is the warmest month. In July, the average heat index is evaluated at a scorching 108.1°F (42.3°C). Weather in July »

Weather in August

The last month of the summer, August, is another tropical month in Decatur, Arkansas, with temperature in the range of an average low of 68.2°F (20.1°C) and an average high of 88.9°F (31.6°C). In Decatur, the average high-temperature is essentially the same as in July - a still tropical 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 average temperature fluctuating between 81.7°F (27.6°C) and 61.5°F (16.4°C). In September, the average high-temperature marginally drops, from a hot 88.9°F (31.6°C) in August, to a warm 81.7°F (27.6°C). Weather in September »

Weather in October

October, like September, is an agreeable autumn month in Decatur, Arkansas, with 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 moderately hot 81.7°F (27.6°C) in September, to an agreeable 68.9°F (20.5°C). Weather in October »

Weather in November

November, the last month of the autumn, in Decatur, is another mild month, with average temperature varying between 39.9°F (4.4°C) and 57°F (13.9°C). In November, the average high-temperature decreases, from an agreeable 68.9°F (20.5°C) in October, to a mild 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 temperature in the range of an average high of 46.6°F (8.1°C) and an average low of 32°F (0°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?

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).

How much does it rain in Decatur?

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

When does it snow in Decatur?

January through May, November and December are months with snowfall.

How much does it snow in Decatur?

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

What is the month with the least sunshine in Decatur?

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

When is the lowest UV index in Decatur?

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

What is the driest month in Decatur?

February is the month with the least rainfall in Decatur, Arkansas. Rain falls for 9.5 days and accumulates 1.89" (48mm) of precipitation.

What is the snowiest month in Decatur?

The month with the most snowfall in Decatur is February when snow falls for 4.7 days and typically aggregates up to 1.46" (37mm) of snow.

What is the most humid month in Decatur?

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

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?

June through October are months without snowfall.

When are the longest days in Decatur?

June has the longest days of the year in Decatur, Arkansas, with an average of 14.6h of daylight.

What is the warmest month in Decatur?

July is the warmest month, 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?

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

What is the least humid month in Decatur?

The least humid month in Decatur is October, with an average relative humidity of 70%.

What is the month with the shortest days in Decatur?

December has the shortest days of the year in Decatur, Arkansas, with an average of 9.7h of daylight.

Average pressure
Decatur, AR

Average pressure - Decatur, AR

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

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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).
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").
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).
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: 14.6h).
The month with the shortest days is December (Average daylight: 9.7h).

The month with the most sunshine is July (Average sunshine: 10.8h).
Months with the least sunshine are January and December (Average sunshine: 5.4).

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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).
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

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

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