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, having an average high-temperature of 35.6°F (2°C) and an average low-temperature of 23.4°F (-4.8°C), is the coldest month.Humidity
In January, the average relative humidity is 78%.Rainfall
In Altamont, during January, the rain falls for 7.3 days and regularly aggregates up to 1.77" (45mm) of precipitation. Throughout the year, in Altamont, there are 141.3 rainfall days, and 26.77" (680mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. January is the month with the most snowfall. Snow falls for 5.3 days and accumulates 2.01" (51mm) of snow.Daylight
In Altamont, the average length of the day in January is 9h and 48min.On the first day of January, sunrise is at 7:13 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 5:14 pm CST.
Sunshine
The month with the least sunshine is January, with an average of 4.3h 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 reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the average person.Note: In January, an average UV index of 2 transforms into the following instructions:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Frequently asked questions
What is the coldest month in Altamont?
How cold is January in Altamont?
What is the average humidity in January in Altamont?
How much does it rain in Altamont in January?
When does it snow the most in Altamont?
How much does it snow in Altamont in January?
How many hours of daylight does Altamont have in January?
When is the sunrise / sunset in January in Altamont?
What is the month with the least sunshine in Altamont?
How long on average sun shines in January in Altamont?
What is the month with the lowest UV index in Altamont?
How high is the UV index in January in Altamont?
Average temperature in January
Altamont, IL
- Average high temperature in January: 35.6°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (35.6°F).
- Average low temperature in January: 23.4°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in January
Altamont, IL
- 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 (29.93"Hg).
Average wind speed in January
Altamont, IL
- Average wind speed in January: 10.3mph
The windiest months (with the highest average wind speed) are January and February (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in January
Altamont, IL
- Average humidity in January: 78%
The months with the highest relative humidity are July and August (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Altamont, IL
- Average rainfall in January: 1.77"
The wettest month (with the highest rainfall) is April (3.35").
The driest month (with the least rainfall) is February (1.38").
Average rainfall days in January
Altamont, IL
- Average rainfall days in January: 7.3 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in January
Altamont, IL
- Average snowfall in January: 2.01"
The month with the highest snowfall is January (2.01").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Altamont, IL
- Average snowfall days in January: 5.3 days
The month with the highest number of snowfall days is January (5.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Altamont, IL
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January: 4h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in January
Altamont, IL
- Average sunshine days in January: 18.9 days
The month with the most sunshine days is December (19.5 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in January
Altamont, 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
Altamont, IL
- Average cloud cover in January: 53
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June and September (Cloud cover 29).
Average visibility in January
Altamont, IL
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Altamont, Illinois, USA
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