Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
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).Humidity
In Decatur, the average relative humidity in January is 62%.Rainfall
The month with the least rainfall is January, when the rain falls for 5.7 days and typically collects 1.34" (34mm) of precipitation.Snowfall
January through March and December are months with snowfall. In Decatur, in January, snow falls for 0.5 days, with typically accumulated 0.2" (5mm) of snow. Throughout the year, there are 3.5 snowfall days, and 1.69" (43mm) of snow is accumulated.Daylight
In Decatur, the average length of the day in January is 10h and 15min.On the first day of the month, sunrise is at 7:33 am and sunset at 5:33 pm. On the last day of January, sunrise is at 7:26 am and sunset at 6:00 pm CST.
Sunshine
The average sunshine in January is 6.3h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: A maximum high daily UV index of 3 during January translates into the following directions:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month in Decatur?
What are January temperatures?
What is the average humidity in January?
What is the driest month?
How many days does it rain in January?
How many days does it snow in January?
What is the average length of the day in January?
What time are sunrise and sunset in January in Decatur?
How many hours of sunshine does Decatur have in January?
When is the lowest UV index?
How high is the UV index in January?
Average temperature in January
Decatur, TX
- Average high temperature in January: 54°F
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).
- Average low temperature in January: 37.4°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 in January
Decatur, TX
- Average pressure in January: 30.16"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 in January
Decatur, TX
- Average wind speed in January: 9.3mph
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 in January
Decatur, TX
- Average humidity in January: 62%
The month with the highest relative humidity is May (74%).
The month with the lowest relative humidity is August (56%).
Average rainfall in January
Decatur, TX
- Average rainfall in January: 1.34"
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 in January
Decatur, TX
- Average rainfall days in January: 5.7 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 in January
Decatur, TX
- Average snowfall in January: 0.2"
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 in January
Decatur, TX
- Average snowfall days in January: 0.5 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 in January /
Average sunshine in January
Decatur, TX
- Average daylight in January: 10h and 1min
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 2min
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 in January
Decatur, TX
- Average sunshine days in January: 23.6 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 in January
Decatur, TX
- Average UV index in January: 3
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 in January
Decatur, TX
- Average cloud cover in January: 27
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 in January
Decatur, TX
- Average visibility in January: 6mi
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).
Decatur, Texas, USA
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