Climate and monthly weather forecastDecatur, TX
Climate and monthly weather forecast
Weather in January
January, the same as December, is another fresh winter month in Decatur, Texas, with an average temperature fluctuating between 54°F (12.2°C) and 37.4°F (3°C). Decatur experiences its lowest temperatures in January, with an average peak of 54°F (12.2°C) and a low of 37.4°F (3°C). Weather in January »Weather in February
The last month of the winter, February, is a refreshing month in Decatur, Texas, with an average temperature fluctuating between 57.4°F (14.1°C) and 40.8°F (4.9°C). The advent of February brings an average high-temperature of a moderate 57.4°F (14.1°C), exhibiting minor difference from the previous month. Weather in February »Weather in March
The first month of the spring, March, is a comfortable month in Decatur, Texas, with an average temperature varying between 48.9°F (9.4°C) and 67.1°F (19.5°C). March's arrival is marked by an increase in the average high-temperature, moving from a moderate 57.4°F (14.1°C) in February to an enjoyable 67.1°F (19.5°C). Weather in March »Weather in April
April in Decatur, Texas, is a moderately hot spring month, with an average temperature varying between 54.9°F (12.7°C) and 74.3°F (23.5°C). Decatur, Texas, in April observes a minor temperature shift, with average high-temperatures adjusting from a comfortable 67.1°F (19.5°C) in March to a warm 74.3°F (23.5°C). Weather in April »Weather in May
May, the last month of the spring in Decatur, is another warm month, with an average temperature ranging between min 62.8°F (17.1°C) and max 80.6°F (27°C). May's arrival coincides with a marginal rise in the average high-temperature, moving from April's 74.3°F (23.5°C) to a still warm 80.6°F (27°C). Weather in May »Weather in June
June, the first month of the summer in Decatur, is a tropical month, with an average temperature ranging between min 71.8°F (22.1°C) and max 90.1°F (32.3°C). June signals a shift in the average high-temperature, moving from May's warm 80.6°F (27°C) to a hot 90.1°F (32.3°C). Weather in June »Weather in July
July, like June, is another tropical summer month in Decatur, Texas, with an average temperature fluctuating between 94.1°F (34.5°C) and 74.3°F (23.5°C). As June transitions into July, Decatur records an average high-temperature of a still tropical 94.1°F (34.5°C), showing a gentle shift from the preceding month. Weather in July »Weather in August
August, the last month of the summer in Decatur, is a fiery hot month, with an average temperature fluctuating between 95.2°F (35.1°C) and 74.8°F (23.8°C). Temperature readings reach their annual highs in August, averaging 95.2°F (35.1°C) and a minimum average of 74.8°F (23.8°C). Throughout August, the heat index is appraised at a scorching 109.4°F (43°C). Weather in August »Weather in September
September, the first month of the autumn in Decatur, is still a hot month, with temperature in the range of an average low of 68.2°F (20.1°C) and an average high of 86.4°F (30.2°C). The start of September comes with a small reduction in the average high-temperature, subtly receding from a fiery hot 95.2°F (35.1°C) in August to a hot 86.4°F (30.2°C). Weather in September »Weather in October
October, the same as September, is another warm autumn month in Decatur, Texas, with an average temperature varying between 56.5°F (13.6°C) and 74.8°F (23.8°C). The shift to October brings a decrease in the average high-temperature, falling from a tropical 86.4°F (30.2°C) in September to a moderately hot 74.8°F (23.8°C). Weather in October »Weather in November
The last month of the autumn, November, is also an enjoyable month in Decatur, Texas, with an average temperature varying between 47.1°F (8.4°C) and 63.5°F (17.5°C). With November's arrival, Decatur sees a decrease in average high-temperatures, moving from a moderately hot 74.8°F (23.8°C) in October to a refreshing 63.5°F (17.5°C). Weather in November »Weather in December
December, the first month of the winter in Decatur, is still a cool month, with an average temperature varying between 39.4°F (4.1°C) and 54.3°F (12.4°C). The beginning of December marks a decrease in the average high-temperature, transitioning from a refreshing 63.5°F (17.5°C) in November to a fresh 54.3°F (12.4°C). Weather in December »Updated: Jul 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Decatur records the coldest temperatures in January, averaging a high of 54°F (12.2°C) and a low of 37.4°F (3°C).
January is the month with the least rainfall. Rain falls for 5.7 days and accumulates 1.34" (34mm) of precipitation.
Throughout the year, there are 131.9 rainfall days, and 28.31" (719mm) of precipitation is accumulated.
Months with snowfall are January through March and December.
In Decatur, during the entire year, snow falls for 3.5 days and aggregates up to 1.69" (43mm) of snow.
January and December, with an average maximum UV index of 3, are months with the lowest UV index.
The month with the most snowfall is February, when snow falls for 1.9 days and typically aggregates up to 1.14" (29mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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.
April through November are months without snowfall.
With an average relative humidity of 74%, May is the most humid month.
June has the longest days of the year in Decatur, with an average of 14h and 18min of daylight.
June through August, with an average maximum UV index of 7, are months with the highest UV index.
The month with the most sunshine is July, with an average of 11.1h of sunshine.
August is the warmest month, with the temperature often reaching an average high of 95.2°F (35.1°C) and an average low of 74.8°F (23.8°C).
The least humid month is August, with an average relative humidity of 56%.
The month with the most rainfall is October, when the rain falls for 11.3 days and typically aggregates up to 3.62" (92mm) of precipitation.
With an average of 10h and 0min of daylight, December has the shortest days of the year.
December has the least sunshine of the year, with an average of 5.9h of sunshine.
Average temperature
Decatur, TX
The warmest month (with the highest average high temperature) is August (95.2°F).
The month with the lowest average high temperature is January (54°F).
The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (37.4°F).
Average pressure
Decatur, TX
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.02"Hg - Average pressure in April:
29.91"Hg - Average pressure in May:
29.91"Hg - Average pressure in June:
29.89"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.92"Hg - Average pressure in September:
29.97"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed
Decatur, TX
- Average wind speed in January:
9.3mph - Average wind speed in February:
9.9mph - Average wind speed in March:
10.7mph - Average wind speed in April:
10.7mph - Average wind speed in May:
9.6mph - Average wind speed in June:
8.5mph
- Average wind speed in July:
7.5mph - Average wind speed in August:
7.2mph - Average wind speed in September:
7mph - Average wind speed in October:
8.3mph - Average wind speed in November:
8.9mph - Average wind speed in December:
8.6mph
The windiest months (with the highest average wind speed) are March and April (10.7mph).
The calmest month (with the lowest average wind speed) is September (7mph).
Average humidity
Decatur, TX
The month with the highest relative humidity is May (74%).
The month with the lowest relative humidity is August (56%).
Average rainfall
Decatur, TX
- Average rainfall in January:
1.34" - Average rainfall in February:
1.54" - Average rainfall in March:
2.32" - Average rainfall in April:
2.24" - Average rainfall in May:
3.54" - Average rainfall in June:
2.95"
- Average rainfall in July:
2.13" - Average rainfall in August:
2.28" - Average rainfall in September:
2.95" - Average rainfall in October:
3.62" - Average rainfall in November:
1.93" - Average rainfall in December:
1.46"
The wettest month (with the highest rainfall) is October (3.62").
The driest month (with the least rainfall) is January (1.34").
Average rainfall days
Decatur, TX
- Average rainfall days in January:
5.7 days - Average rainfall days in February:
8.2 days - Average rainfall days in March:
12.4 days - Average rainfall days in April:
12.4 days - Average rainfall days in May:
15.2 days - Average rainfall days in June:
12.3 days
- Average rainfall days in July:
12.6 days - Average rainfall days in August:
12.7 days - Average rainfall days in September:
13.5 days - Average rainfall days in October:
11.3 days - Average rainfall days in November:
7.8 days - Average rainfall days in December:
7.8 days
The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is January (5.7 days).
Average snowfall
Decatur, TX
The month with the highest snowfall is February (1.14").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days
Decatur, TX
- Average snowfall days in January:
0.5 days - Average snowfall days in February:
1.9 days - Average snowfall days in March:
0.3 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.1 days - Average snowfall days in December:
0.7 days
The month with the highest number of snowfall days is February (1.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Decatur, TX
- Average daylight in January:
10h and 12min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 0min - Average daylight in May:
13h and 54min - Average daylight in June:
14h and 18min
- Average daylight in July:
14h and 6min - Average daylight in August:
13h and 18min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 30min - Average daylight in December:
10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in January:
6h and 18min - Average sunshine in February:
7h and 24min - Average sunshine in March:
7h and 18min - Average sunshine in April:
8h and 30min - Average sunshine in May:
9h and 6min - Average sunshine in June:
10h and 30min
- Average sunshine in July:
11h and 6min - Average sunshine in August:
10h and 54min - Average sunshine in September:
8h and 30min - Average sunshine in October:
6h and 48min - Average sunshine in November:
6h and 6min - Average sunshine in December:
5h and 54min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days
Decatur, TX
- Average sunshine days in January:
23.6 days - Average sunshine days in February:
17.3 days - Average sunshine days in March:
16.3 days - Average sunshine days in April:
15.8 days - Average sunshine days in May:
13.5 days - Average sunshine days in June:
16.1 days
- Average sunshine days in July:
15.8 days - Average sunshine days in August:
16.6 days - Average sunshine days in September:
14.5 days - Average sunshine days in October:
18.4 days - Average sunshine days in November:
19.9 days - Average sunshine days in December:
21.2 days
The month with the most sunshine days is January (23.6 days).
The month with the least sunshine days is May (13.5 days).
Average UV index
Decatur, TX
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover
Decatur, TX
The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility
Decatur, TX
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).
