Climate and monthly weather forecast
Decatur, AL

Weather in January

January, the same as December, in Decatur, Alabama, is a frosty winter month, with temperature in the range of an average high of 47.5°F (8.6°C) and an average low of 33.3°F (0.7°C). With an average high-temperature of 47.5°F (8.6°C) and an average low-temperature of 33.3°F (0.7°C), January is the coldest month. Weather in January »

Weather in February

February, the last month of the winter in Decatur, is a cool month, with an average temperature ranging between max 53.1°F (11.7°C) and min 37.2°F (2.9°C). In Decatur, Alabama, the average high-temperature in February marginally rises from a chilly 47.5°F (8.6°C) in January to a cool 53.1°F (11.7°C). Weather in February »

Weather in March

March, the first month of the spring in Decatur, is a comfortable month, with an average temperature varying between 61.3°F (16.3°C) and 44.2°F (6.8°C). In Decatur, the average high-temperature in March marginally rises from a fresh 53.1°F (11.7°C) in February to an enjoyable 61.3°F (16.3°C). Weather in March »

Weather in April

April is a pleasant spring month in Decatur, Alabama, with an average temperature ranging between max 70.5°F (21.4°C) and min 51.4°F (10.8°C). In April, the average high-temperature increases from a comfortable 61.3°F (16.3°C) in March to a pleasant 70.5°F (21.4°C). Weather in April »

Weather in May

May, the last month of the spring in Decatur, is a moderately hot month, with an average temperature varying between 59.9°F (15.5°C) and 78.8°F (26°C). In Decatur, the average high-temperature in May marginally rises from a pleasant 70.5°F (21.4°C) in April to a moderately hot 78.8°F (26°C). Weather in May »

Weather in June

The first month of the summer, June, is a hot month in Decatur, Alabama, with an average temperature ranging between min 67.3°F (19.6°C) and max 86.7°F (30.4°C). In June, the average high-temperature marginally rises from a warm 78.8°F (26°C) in May to a hot 86.7°F (30.4°C). Weather in June »

Weather in July

July, like June, is another tropical summer month in Decatur, Alabama, with an average temperature varying between 88.5°F (31.4°C) and 69.4°F (20.8°C). The warmest month is July, with an average high-temperature of 88.5°F (31.4°C) and an average low-temperature of 69.4°F (20.8°C). The average heat index in July is estimated at a scorching 105.8°F (41°C). Weather in July »

Weather in August

August, the last month of the summer in Decatur, is another hot month, with temperature in the range of an average low of 68.9°F (20.5°C) and an average high of 88.2°F (31.2°C). In Decatur, the average high-temperature in August is essentially the same as in July - a still hot 88.2°F (31.2°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Decatur, Alabama, with temperature in the range of an average high of 83.1°F (28.4°C) and an average low of 63.7°F (17.6°C). In Decatur, the average high-temperature in September is essentially the same as in August - a moderately hot 83.1°F (28.4°C). Weather in September »

Weather in October

October, like September, is another pleasant autumn month in Decatur, Alabama, with an average temperature ranging between min 52.7°F (11.5°C) and max 72.1°F (22.3°C). In October, the average high-temperature decreases from a moderately hot 83.1°F (28.4°C) in September to an agreeable 72.1°F (22.3°C). Weather in October »

Weather in November

The last month of the autumn, November, is another mild month in Decatur, Alabama, with an average temperature fluctuating between 42.3°F (5.7°C) and 59.5°F (15.3°C). In Decatur, the average high-temperature in November decreases from a pleasant 72.1°F (22.3°C) in October to a moderate 59.5°F (15.3°C). Weather in November »

Weather in December

The first month of the winter, December, is still a cool month in Decatur, Alabama, with an average temperature ranging between max 51.6°F (10.9°C) and min 38.3°F (3.5°C). In Decatur, the average high-temperature in December marginally drops from a moderate 59.5°F (15.3°C) in November to a fresh 51.6°F (10.9°C). Weather in December »
[Resources]

FAQ

What is the coldest month in Decatur?

With an average high-temperature of 47.5°F (8.6°C) and an average low-temperature of 33.3°F (0.7°C), January is the coldest month.

How many days does it rain in Decatur?

Throughout the year, in Decatur, Alabama, there are 177.6 rainfall days, and 43.11" (1095mm) of precipitation is accumulated.

When does it snow in Decatur?

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

When does it snow the most in Decatur?

The months with the most snowfall in Decatur, Alabama, are January and February, with an average 0.55" (14mm) of accumulated snow.

How many days does it snow in Decatur?

Throughout the year, in Decatur, Alabama, there are 7.4 snowfall days, and 1.77" (45mm) of snow is accumulated.

When is the lowest UV index in Decatur?

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

What is the month with the least sunshine in Decatur?

With an average of 4.6h of sunshine, February has the least sunshine of the year.

When is Daylight Saving Time (DST) in Decatur?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts, 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.

When it does not snow in Decatur?

April through October are months without snowfall in Decatur.

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

The months with the highest UV index in Decatur, Alabama, are May through August, with an average maximum UV index of 6.

When are the longest days in Decatur?

With an average of 14h and 26min of daylight, June has the longest days of the year in Decatur, Alabama.

What month has the most sunshine in Decatur?

The month with the most sunshine in Decatur is June, with an average of 10.5h of sunshine.

What is the warmest month in Decatur?

July is the warmest month, with an average high-temperature of 88.5°F (31.4°C) and an average low-temperature of 69.4°F (20.8°C).

What is the driest month in Decatur?

September and November are months with the least rain in Decatur when the rain falls for 13.8 days and typically aggregates up to 2.48" (63mm) of rain.

What is the least humid month in Decatur?

The least humid month in Decatur is October, with an average relative humidity of 72%.

What is the most humid month in Decatur?

December is the most humid month, with an average relative humidity of 79%.

What is the rainiest month in Decatur?

December is the month with the most rainfall. Rain falls for 13.3 days and accumulates 4.45" (113mm) of precipitation.

What is the month with the shortest days in Decatur?

With an average of 9h and 53min of daylight, December has the shortest days of the year in Decatur, Alabama.

Average temperature
Decatur, AL

Average temperature - Decatur, AL

The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is January (47.5°F).

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (33.3°F).

[Resources]

Average pressure
Decatur, AL

Average pressure - Decatur, AL

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

[Resources]

Average wind speed
Decatur, AL

Average wind speed - Decatur, AL

The windiest month (with the highest average wind speed) is February (8.6mph).
The calmest month (with the lowest average wind speed) is July (4.8mph).

[Resources]

Average rainfall
Decatur, AL

Average rainfall - Decatur, AL

The wettest month (with the highest rainfall) is December (4.45").
The driest months (with the least rainfall) are September and November (2.48").

[Resources]

Average rainfall days
Decatur, AL

Average rainfall days - Decatur, AL

The month with the highest number of rainy days is July (20 days).
The month with the least rainy days is November (10.4 days).

[Resources]

Average snowfall
Decatur, AL

Average snowfall - Decatur, AL

The months with the highest snowfall are January and February (0.55").
The months with the least snowfall are April, May, June, July, August, September and October (0").

[Resources]

Average snowfall days
Decatur, AL

Average snowfall days - Decatur, AL

The month with the highest number of snowfall days is February (2.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

[Resources]

Average daylight / Average sunshine
Decatur, AL

Average daylight / Average sunshine - Decatur, AL

The month with the longest days is June (Average daylight: 14h and 26min).
The month with the shortest days is December (Average daylight: 9h and 53min).

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

[Resources]

Average sunshine days
Decatur, AL

Average sunshine days - Decatur, AL

The month with the most sunshine days is October (19.2 days).
The month with the least sunshine days is July (8.8 days).

[Resources]

Average UV index
Decatur, AL

Average UV index - Decatur, AL

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).

[Resources]

Average visibility
Decatur, AL

Average visibility - Decatur, AL

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).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location