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, marked by an average high-temperature of 40.1°F (4.5°C) and a low-temperature of 27.5°F (-2.5°C), is the coldest month.Humidity
The average relative humidity in January is 77%.Rainfall
In January, in Caseyville, the rain falls for 8.2 days. Throughout January, 1.46" (37mm) of precipitation is accumulated. In Caseyville, during the entire year, the rain falls for 136.4 days and collects up to 20" (508mm) of precipitation.Snowfall
Months with snowfall in Caseyville are January through April, November and December. The month with the most snowfall in Caseyville, Kentucky, is January, when snow falls for 4.4 days and typically aggregates up to 0.79" (20mm) of snow.Daylight
In January, the average length of the day is 9h and 55min.On the first day of January, sunrise is at 7:06 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 5:14 pm CST.
Sunshine
January has the least sunshine of the year, with an average of 4.5h of sunshine.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 2 in January translates into these instructions:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Frequently asked questions
What time of the year is the coldest in Caseyville?
Is it cold in Caseyville during January?
What is the average humidity in January in Caseyville?
How much does it rain in Caseyville in January?
When does it snow the most in Caseyville?
How much does it snow in Caseyville in January?
What is the average length of the day in January in Caseyville?
What time are sunrise and sunset in January in Caseyville?
What is the month with the least sunshine in Caseyville?
How many hours of sunshine does Caseyville have in January?
When is the lowest UV index in Caseyville?
How high is the UV index in January in Caseyville?
Average temperature in January
Caseyville, KY
- Average high temperature in January: 40.1°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (40.1°F).
- Average low temperature in January: 27.5°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (27.5°F).
Average pressure in January
Caseyville, KY
- 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 (29.95"Hg).
Average wind speed in January
Caseyville, KY
- Average wind speed in January: 9.7mph
The windiest month (with the highest average wind speed) is February (9.9mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).
Average humidity in January
Caseyville, KY
- Average humidity in January: 77%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Caseyville, KY
- Average rainfall in January: 1.46"
The wettest month (with the highest rainfall) is April (2.2").
The driest month (with the least rainfall) is September (0.91").
Average rainfall days in January
Caseyville, KY
- Average rainfall days in January: 8.2 days
The month with the highest number of rainy days is July (14.8 days).
The month with the least rainy days is January (8.2 days).
Average snowfall in January
Caseyville, KY
- Average snowfall in January: 0.79"
The month with the highest snowfall is January (0.79").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Caseyville, KY
- Average snowfall days in January: 4.4 days
The month with the highest number of snowfall days is January (4.4 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
Caseyville, KY
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January: 4h and 3min
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 30min).
Average sunshine days in January
Caseyville, KY
- Average sunshine days in January: 18.1 days
The month with the most sunshine days is October (20.7 days).
The month with the least sunshine days is July (13.1 days).
Average UV index in January
Caseyville, KY
- 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 and December (UV index 2).
Average cloud cover in January
Caseyville, KY
- Average cloud cover in January: 52
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in January
Caseyville, KY
- 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).
Caseyville, Kentucky, USA
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