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
Seymour reaches its lowest average temperatures in January, measuring 31.5°F (-0.3°C) at the peak and 19.9°F (-6.7°C) at the lowest.Humidity
The average relative humidity in January is 81%.Rainfall
In Seymour, in January, it is raining for 6.7 days, with typically 2.01" (51mm) of accumulated precipitation. In Seymour, during the entire year, the rain falls for 152.9 days and collects up to 29.72" (755mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. January is the month with the most snowfall. Snow falls for 11.4 days and accumulates 4.25" (108mm) of snow.Daylight
The average length of the day in January is 9h and 43min.On the first day of the month, sunrise is at 7:15 am and sunset at 4:38 pm. On the last day of January, sunrise is at 7:03 am and sunset at 5:10 pm CST.
Sunshine
With an average of 4h of sunshine, January has the least sunshine of the year.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the average person.Note: The maximum UV index, 2 during January, leads to the following recommendations:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
How cold is it in January?
What is the average humidity in January?
How much does it rain in January?
What is the snowiest month?
How many days does it snow in January?
What is the average length of the day in January?
What time are sunrise and sunset in January?
What is the month with the least sunshine?
How long on average sun shines in January?
What are the months with the lowest UV index?
How high is the UV index in January?
Average temperature in January
Seymour, IL
- Average high temperature in January: 31.5°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in January: 19.9°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).
Average pressure in January
Seymour, IL
- Average pressure in January: 30.14"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in January
Seymour, IL
- Average wind speed in January: 10.9mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in January
Seymour, IL
- Average humidity in January: 81%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (70%).
Average rainfall in January
Seymour, IL
- Average rainfall in January: 2.01"
The wettest month (with the highest rainfall) is May (3.9").
The driest month (with the least rainfall) is December (1.65").
Average rainfall days in January
Seymour, IL
- Average rainfall days in January: 6.7 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is February (6.3 days).
Average snowfall in January
Seymour, IL
- Average snowfall in January: 4.25"
The month with the highest snowfall is January (4.25").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Seymour, IL
- Average snowfall days in January: 11.4 days
The month with the highest number of snowfall days is January (11.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Seymour, IL
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January: 4h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in January
Seymour, IL
- Average sunshine days in January: 14.6 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is June (10.2 days).
Average UV index in January
Seymour, IL
- 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
Seymour, IL
- Average cloud cover in January: 57
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are August and September (Cloud cover 31).
Average visibility in January
Seymour, IL
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Seymour, Illinois, USA
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