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
Washington's temperature records reveal January as the coldest month, marked by average highs of 38.1°F (3.4°C) and lows of 24.1°F (-4.4°C).Humidity
In Washington, the average relative humidity in January is 75%.Rainfall
In Washington, in January, it is raining for 6.2 days, with typically 1.46" (37mm) of accumulated precipitation. Throughout the year, there are 133.1 rainfall days, and 27.24" (692mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, September, November and December. In Washington, in January, during 5.1 snowfall days, 1.61" (41mm) of snow is typically accumulated. Throughout the year, there are 16.6 snowfall days, and 5.87" (149mm) of snow is accumulated.Daylight
In Washington, the average length of the day in January is 9h and 50min.On the first day of January, sunrise is at 7:21 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 5:24 pm CST.
Sunshine
January has the least sunshine of the year, with an average of 4.6h of sunshine.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum high UV index of 2 in January translates into the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. 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 are the coldest months?
Is January cold?
What is the average humidity in January?
How many days does it rain in January?
How many days does it snow in January?
How many hours of daylight does Washington 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?
When is the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Washington, MO
- Average high temperature in January: 38.1°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (38.1°F).
- Average low temperature in January: 24.1°F
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (24.1°F).
Average pressure in January
Washington, 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 (29.92"Hg).
Average wind speed in January
Washington, MO
- Average wind speed in January: 8.5mph
The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in January
Washington, MO
- Average humidity in January: 75%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (72%).
Average rainfall in January
Washington, MO
- Average rainfall in January: 1.46"
The wettest months (with the highest rainfall) are April and May (3.23").
The driest month (with the least rainfall) is February (1.42").
Average rainfall days in January
Washington, MO
- Average rainfall days in January: 6.2 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is January (6.2 days).
Average snowfall in January
Washington, MO
- Average snowfall in January: 1.61"
The month with the highest snowfall is February (2.09").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days in January
Washington, MO
- Average snowfall days in January: 5.1 days
The month with the highest number of snowfall days is January (5.1 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Washington, MO
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January: 4h and 4min
The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in January
Washington, MO
- Average sunshine days in January: 20.3 days
The month with the most sunshine days is December (20.6 days).
The month with the least sunshine days is May (12.8 days).
Average UV index in January
Washington, MO
- 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, November and December (UV index 2).
Average cloud cover in January
Washington, MO
- Average cloud cover in January: 50
The months with the most cloud cover are January and February (Cloud cover 50).
The months with the least cloud cover are June, July and August (Cloud cover 30).
Average visibility in January
Washington, MO
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, June, July, September, October, November and December (6mi).
The months with the lowest visibility are May and August (5mi).
Washington, Missouri, USA
Weather forecast for your location
2. Allow the app to use your location