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, exhibiting average temperatures of 39°F (3.9°C) at the peak and 24.4°F (-4.2°C) at the base.Humidity
The average relative humidity in January in Sullivan, Missouri, is 75%.Rainfall
In Sullivan, during January, the rain falls for 7 days and regularly aggregates up to 1.97" (50mm) of precipitation. In Sullivan, during the entire year, the rain falls for 149.6 days and collects up to 32.05" (814mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. January is the month with the most snowfall in Sullivan. Snow falls for 7.1 days and accumulates 2.68" (68mm) of snow.Daylight
The average length of the day in January is 9h and 52min.On the first day of January, sunrise is at 7:21 am and sunset at 4:55 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 5:25 pm CST.
Sunshine
With an average of 4.7h of sunshine, January has the least sunshine of the year in Sullivan.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 minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily high UV index of 2 in January translates into this advice:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Opt for tightly woven and loose clothing to enhance protection from the Sun. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest in Sullivan?
Is it cold in Sullivan during January?
What is the average humidity in January in Sullivan?
How much does it rain in Sullivan in January?
When does it snow the most in Sullivan?
How many days does it snow in January in Sullivan?
What is the average length of the day in January in Sullivan?
What time are sunrise and sunset in January in Sullivan?
What is the month with the least sunshine in Sullivan?
How long on average sun shines in January in Sullivan?
When is the lowest UV index in Sullivan?
How high is the UV index in January in Sullivan?
Average temperature in January
Sullivan, MO
- Average high temperature in January: 39°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 (39°F).
- Average low temperature in January: 24.4°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (24.4°F).
Average pressure in January
Sullivan, 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
Sullivan, MO
- Average wind speed in January: 8.6mph
The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in January
Sullivan, 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
Sullivan, MO
- Average rainfall in January: 1.97"
The wettest month (with the highest rainfall) is April (3.86").
The driest month (with the least rainfall) is November (1.85").
Average rainfall days in January
Sullivan, MO
- Average rainfall days in January: 7 days
The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (7 days).
Average snowfall in January
Sullivan, MO
- Average snowfall in January: 2.68"
The month with the highest snowfall is January (2.68").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Sullivan, MO
- Average snowfall days in January: 7.1 days
The month with the highest number of snowfall days is January (7.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Sullivan, 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 36min).
- Average sunshine in January: 4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in January
Sullivan, MO
- Average sunshine days in January: 19.1 days
The month with the most sunshine days is January (19.1 days).
The month with the least sunshine days is July (11.9 days).
Average UV index in January
Sullivan, 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, February, November and December (UV index 2).
Average cloud cover in January
Sullivan, MO
- Average cloud cover in January: 48
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are June and July (Cloud cover 29).
Average visibility in January
Sullivan, MO
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Sullivan, Missouri, USA
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