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
January is the coldest month of the year, registering average temperatures as high as 28.8°F (-1.8°C) and as low as 15.3°F (-9.3°C).Humidity
January, February and June, with an average relative humidity of 82%, are the most humid months.Rainfall
The month with the least rainfall is January, when the rain falls for 3.8 days and typically collects 0.91" (23mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Saint Charles, in January, snow falls for 9.1 days, with typically accumulated 4.29" (109mm) of snow. Throughout the year, there are 35 snowfall days, and 15.04" (382mm) of snow is accumulated.Daylight
The average length of the day in January is 9h and 36min.On the first day of the month, sunrise is at 7:40 am and sunset at 4:56 pm. On the last day of January, sunrise is at 7:27 am and sunset at 5:29 pm CST.
Sunshine
With an average of 4.4h of sunshine, January has the least sunshine of the year.UV index
The months with the lowest UV index are January, February, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: The daily high UV index of 2 in January translates into this advice:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
How cold is it in January?
What are the most humid months?
What is the average humidity in January?
What is the driest month?
How much does it rain in January?
How much does it snow in January?
What is the average length of the day in January in Saint Charles?
When is the sunrise / sunset in January?
What is the month with the least sunshine?
How long on average sun shines in January?
When is the lowest UV index?
How high is the UV index in January?
Average temperature in January
Saint Charles, IA
- Average high temperature in January: 28.8°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in January: 15.3°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).
Average pressure in January
Saint Charles, IA
- 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 (29.88"Hg).
Average wind speed in January
Saint Charles, IA
- Average wind speed in January: 10.6mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in January
Saint Charles, IA
- Average humidity in January: 82%
The months with the highest relative humidity are January, February and June (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Saint Charles, IA
- Average rainfall in January: 0.91"
The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days in January
Saint Charles, IA
- Average rainfall days in January: 3.8 days
The month with the highest number of rainy days is June (17.9 days).
The months with the least rainy days are January and February (3.8 days).
Average snowfall in January
Saint Charles, IA
- Average snowfall in January: 4.29"
The month with the highest snowfall is February (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Saint Charles, IA
- Average snowfall days in January: 9.1 days
The month with the highest number of snowfall days is January (9.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Saint Charles, IA
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January: 4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in January
Saint Charles, IA
- Average sunshine days in January: 19.1 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is June (9.8 days).
Average UV index in January
Saint Charles, IA
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in January
Saint Charles, IA
- Average cloud cover in January: 52
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are July and September (Cloud cover 29).
Average visibility in January
Saint Charles, IA
- Average visibility in January: 5mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Saint Charles, Iowa, USA
Weather forecast for your location
2. Allow the app to use your location