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 30°F (-1.1°C) and an average low-temperature of 18.3°F (-7.6°C), is the coldest month.Humidity
In Irwin, Illinois, the average relative humidity in January is 82%.Rainfall
In January, in Irwin, the rain falls for 5.5 days. Throughout January, 1.14" (29mm) of precipitation is accumulated. Throughout the year, there are 142.1 rainfall days, and 22.56" (573mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. The month with the most snowfall in Irwin, Illinois, is January, when snow falls for 11.7 days and typically aggregates up to 2.17" (55mm) of snow.Daylight
In January, the average length of the day in Irwin, Illinois, is 9h and 37min.On the first day of the month, sunrise is at 7:16 am and sunset at 4:33 pm. On the last day of January, in Irwin, Illinois, sunrise is at 7:03 am and sunset at 5:06 pm CST.
Sunshine
January has the least sunshine of the year in Irwin, with an average of 3.8h of sunshine.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index, 1 during January, leads to the following recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Frequently asked questions
What is the coldest month in Irwin?
How cold is January in Irwin?
What is the average humidity in January in Irwin?
How much does it rain in Irwin in January?
What is the snowiest month in Irwin?
How much does it snow in Irwin in January?
How many hours of daylight does Irwin have in January?
What time are sunrise and sunset in January in Irwin?
What is the month with the least sunshine in Irwin?
How many hours of sunshine does Irwin have in January?
What is the month with the lowest UV index in Irwin?
What is the UV index reading in January in Irwin?
Average temperature in January
Irwin, IL
- Average high temperature in January: 30°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 (30°F).
- Average low temperature in January: 18.3°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in January
Irwin, IL
- Average pressure in January: 30.12"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in January
Irwin, IL
- Average wind speed in January: 10.2mph
The windiest months (with the highest average wind speed) are January and April (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in January
Irwin, IL
- Average humidity in January: 82%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall in January
Irwin, IL
- Average rainfall in January: 1.14"
The wettest month (with the highest rainfall) is May (3.27").
The driest month (with the least rainfall) is February (1.06").
Average rainfall days in January
Irwin, IL
- Average rainfall days in January: 5.5 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (5 days).
Average snowfall in January
Irwin, IL
- Average snowfall in January: 2.17"
The month with the highest snowfall is January (2.17").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Irwin, IL
- Average snowfall days in January: 11.7 days
The month with the highest number of snowfall days is January (11.7 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
Irwin, IL
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January: 3h and 5min
The months with the most sunshine are June and July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in January
Irwin, IL
- Average sunshine days in January: 15.1 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is July (9.3 days).
Average UV index in January
Irwin, IL
- Average UV index in January: 1
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in January
Irwin, IL
- Average cloud cover in January: 60
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 34).
Average visibility in January
Irwin, 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).
Irwin, Illinois, USA
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