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
Temperature records mark January as the coldest month, with highs averaging 26.8°F (-2.9°C) and lows at 16.2°F (-8.8°C).Humidity
January is the most humid month, with an average relative humidity of 88%.Rainfall
In Saint Louis, in January, during 6.9 rainfall days, 1.65" (42mm) of precipitation is typically accumulated. Throughout the year, there are 141.3 rainfall days, and 22.48" (571mm) of precipitation is accumulated.Snowfall
Months with snowfall in Saint Louis are January through April, October through December. The month with the most snowfall is January, when snow falls for 18 days and typically aggregates up to 5.91" (150mm) of snow.Daylight
The average length of the day in January is 9h and 24min.On the first day of January, sunrise is at 8:10 am and sunset at 5:12 pm. On the last day of the month, sunrise is at 7:55 am and sunset at 5:48 pm EST.
Sunshine
January has the least sunshine of the year, with an average of 2.7h of sunshine.UV index
The months with the lowest UV index are January, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 1 during January translates into the following directions:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. During bright days, sunglasses that offer UVA and UVB defense are recommended. On your guard! Snow's reflection can almost 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 part of the year is the coldest?
How cold is January?
What is the most humid month in Saint Louis?
What is the average humidity in January?
How much does it rain in Saint Louis in January?
When does it snow the most?
How many days does it snow in January?
How many hours of daylight does Saint Louis have in January?
When is the sunrise / sunset in January?
What is the month with the least sunshine?
How long on average sun shines in January in Saint Louis?
When is the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Saint Louis, MI
- Average high temperature in January: 26.8°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (26.8°F).
- Average low temperature in January: 16.2°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure in January
Saint Louis, MI
- Average pressure in January: 30.06"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in January
Saint Louis, MI
- Average wind speed in January: 9.5mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in January
Saint Louis, MI
- Average humidity in January: 88%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is April (75%).
Average rainfall in January
Saint Louis, MI
- Average rainfall in January: 1.65"
The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is February (1.26").
Average rainfall days in January
Saint Louis, MI
- Average rainfall days in January: 6.9 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in January
Saint Louis, MI
- Average snowfall in January: 5.91"
The month with the highest snowfall is January (5.91").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Saint Louis, MI
- Average snowfall days in January: 18 days
The month with the highest number of snowfall days is January (18 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 Louis, MI
- Average daylight in January: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January: 2h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days in January
Saint Louis, MI
- Average sunshine days in January: 10.3 days
The month with the most sunshine days is September (15.8 days).
The month with the least sunshine days is January (10.3 days).
Average UV index in January
Saint Louis, MI
- Average UV index in January: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in January
Saint Louis, MI
- Average cloud cover in January: 71
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in January
Saint Louis, MI
- Average visibility in January: 5mi
The months with the highest visibility are March, April, May, June, July, August, October and November (6mi).
The months with the lowest visibility are January, February, September and December (5mi).
Saint Louis, Michigan, USA
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