January weather forecastDecatur, MS
January
Weather in January
January, like December, in Decatur, Mississippi, is another fresh winter month, with an average temperature ranging between min 37.8°F (3.2°C) and max 54.5°F (12.5°C).Temperature
January is the coldest month, with an average high-temperature of 54.5°F (12.5°C) and an average low-temperature of 37.8°F (3.2°C).Humidity
In Decatur, the average relative humidity in January is 77%.Rainfall
In Decatur, in January, it is raining for 11.9 days, with typically 3.39" (86mm) of accumulated precipitation. In Decatur, during the entire year, the rain falls for 167.6 days and collects up to 36.54" (928mm) of precipitation.Snowfall
January through March and December are months with snowfall. The month with the most snowfall is January, when snow falls for 0.8 days and typically aggregates up to 0.43" (11mm) of snow.Daylight
In Decatur, the average length of the day in January is 10h and 19min.On the first day of January, sunrise is at 6:57 am and sunset at 5:01 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 5:28 pm CST.
Sunshine
In January, the average sunshine is 5.3h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 3 during January leads to these advisories:
Be vigilant - Preventing sunburn is recommended. To protect against the Sun's most potent rays, avoid direct exposure around midday. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Decatur, MS
- Average high temperature in January: 54.5°F
The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is January (54.5°F).
- Average low temperature in January: 37.8°F
The month with the highest average low temperature is August (71.8°F).
The coldest month (with the lowest average low temperature) is January (37.8°F).
Average pressure in January
Decatur, MS
- Average pressure in January: 30.17"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in January
Decatur, MS
- Average wind speed in January: 7.7mph
The windiest month (with the highest average wind speed) is February (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in January
Decatur, MS
- Average humidity in January: 77%
The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (70%).
Average rainfall in January
Decatur, MS
- Average rainfall in January: 3.39"
The wettest month (with the highest rainfall) is December (3.7").
The driest month (with the least rainfall) is November (2.09").
Average rainfall days in January
Decatur, MS
- Average rainfall days in January: 11.9 days
The month with the highest number of rainy days is July (20.3 days).
The month with the least rainy days is November (8.9 days).
Average snowfall in January
Decatur, MS
- Average snowfall in January: 0.43"
The month with the highest snowfall is January (0.43").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in January
Decatur, MS
- Average snowfall days in January: 0.8 days
The month with the highest number of snowfall days is January (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in January /
Average sunshine in January
Decatur, MS
- Average daylight in January: 10h and 18min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in January: 5h and 18min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in January
Decatur, MS
- Average sunshine days in January: 17.3 days
The month with the most sunshine days is October (20.2 days).
The month with the least sunshine days is July (9 days).
Average UV index in January
Decatur, MS
- Average UV index in January: 3
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in January
Decatur, MS
- Average cloud cover in January: 43
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in January
Decatur, MS
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, June, September, October, November and December (6mi).
The months with the lowest visibility are May, July and August (5mi).
