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
With average high temperatures of 41.5°F (5.3°C) and lows of 28.8°F (-1.8°C), January is the coldest month.Humidity
In January, the average relative humidity is 75%.Rainfall
In Charleston, in January, during 9.4 rainfall days, 2.05" (52mm) of precipitation is typically accumulated. Throughout the year, there are 153 rainfall days, and 33.9" (861mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In January, it is snowing for 3.2 days. Throughout January, 0.98" (25mm) of snow is accumulated. Throughout the year, there are 11.2 snowfall days, and 4.69" (119mm) of snow is accumulated.Daylight
In Charleston, the average length of the day in January is 9h and 58min.On the first day of the month, sunrise is at 7:10 am and sunset at 4:51 pm. On the last day of January, sunrise is at 7:00 am and sunset at 5:21 pm CST.
Sunshine
In Charleston, the average sunshine in January is 4.9h.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The average daily UV index of 2 in January transforms into the following instructions:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest?
Is it cold in Charleston during January?
What is the average humidity in January?
How much does it rain in January?
How many days does it snow in January?
How many hours of daylight does Charleston have in January?
What time are sunrise and sunset in January?
How many hours of sunshine does Charleston have in January?
What are the months with the lowest UV index in Charleston?
What is the UV index reading in January?
Average temperature in January
Charleston, MO
- Average high temperature in January: 41.5°F
The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (41.5°F).
- Average low temperature in January: 28.8°F
The month with the highest average low temperature is July (70.2°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in January
Charleston, MO
- 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 (29.94"Hg).
Average wind speed in January
Charleston, MO
- Average wind speed in January: 9.3mph
The windiest months (with the highest average wind speed) are January, February and March (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in January
Charleston, MO
- Average humidity in January: 75%
The months with the highest relative humidity are March and May (78%).
The month with the lowest relative humidity is October (69%).
Average rainfall in January
Charleston, MO
- Average rainfall in January: 2.05"
The wettest month (with the highest rainfall) is April (3.9").
The driest month (with the least rainfall) is September (1.22").
Average rainfall days in January
Charleston, MO
- Average rainfall days in January: 9.4 days
The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is January (9.4 days).
Average snowfall in January
Charleston, MO
- Average snowfall in January: 0.98"
The month with the highest snowfall is February (1.69").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Charleston, MO
- Average snowfall days in January: 3.2 days
The month with the highest number of snowfall days is February (3.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Charleston, MO
- Average daylight in January: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January: 4h and 5min
The months with the most sunshine are June and July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in January
Charleston, MO
- Average sunshine days in January: 18.2 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is May (12.1 days).
Average UV index in January
Charleston, MO
- Average UV index in January: 2
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).
Average cloud cover in January
Charleston, MO
- Average cloud cover in January: 47
The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 25).
Average visibility in January
Charleston, MO
- 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).
Charleston, Missouri, USA
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