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 month when Harmon sees the lowest average temperatures, with a high of 27.7°F (-2.4°C) and a low of 14.9°F (-9.5°C).Humidity
January and July, with an average relative humidity of 85%, are the most humid months in Harmon.Rainfall
The months with the least rainfall are January and February Rain falls for 4.8 days and accumulates 0.75" (19mm) of rain.Snowfall
January through April, October through December are months with snowfall in Harmon. The month with the most snowfall in Harmon is January, when snow falls for 10.2 days and typically aggregates up to 2.56" (65mm) of snow.Daylight
In January, the average length of the day in Harmon, Illinois, is 9h and 34min.On the first day of January, sunrise is at 7:25 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 5:11 pm CST.
Sunshine
With an average of 3.8h of sunshine, January has the least sunshine of the year.UV index
In January, the average daily maximum UV index in Harmon is 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In January, the maximum UV index of 2 translates into these guidelines:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months in Harmon?
How cold is January in Harmon?
What are the most humid months in Harmon?
What is the average humidity in January in Harmon?
What is the driest month in Harmon?
How many days does it rain in January in Harmon?
What is the snowiest month in Harmon?
How many days does it snow in January in Harmon?
What is the average length of the day in January in Harmon?
When are sunrise and sunset in January in Harmon?
What is the month with the least sunshine in Harmon?
How long on average sun shines in January in Harmon?
How high is the UV index in January in Harmon?
Average temperature in January
Harmon, IL
- Average high temperature in January: 27.7°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (27.7°F).
- Average low temperature in January: 14.9°F
The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).
Average pressure in January
Harmon, 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 (29.91"Hg).
Average wind speed in January
Harmon, IL
- Average wind speed in January: 10mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in January
Harmon, IL
- Average humidity in January: 85%
The months with the highest relative humidity are January and July (85%).
The month with the lowest relative humidity is October (73%).
Average rainfall in January
Harmon, IL
- Average rainfall in January: 0.75"
The wettest month (with the highest rainfall) is May (2.83").
The driest months (with the least rainfall) are January and February (0.75").
Average rainfall days in January
Harmon, IL
- Average rainfall days in January: 4.8 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in January
Harmon, IL
- Average snowfall in January: 2.56"
The month with the highest snowfall is January (2.56").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Harmon, IL
- Average snowfall days in January: 10.2 days
The month with the highest number of snowfall days is January (10.2 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
Harmon, IL
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January: 3h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in January
Harmon, IL
- Average sunshine days in January: 17 days
The months with the most sunshine days are November and December (18.8 days).
The month with the least sunshine days is June (11.3 days).
Average UV index in January
Harmon, IL
- Average UV index in January: 2
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
Harmon, IL
- Average cloud cover in January: 60
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 31).
Average visibility in January
Harmon, 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).
Harmon, Illinois, USA
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