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, on average, is the coldest month, registering a high temperature of 30.9°F (-0.6°C) and a low of 19°F (-7.2°C).Humidity
The average relative humidity in January is 81%.Rainfall
January is the month with the least rainfall. Rain falls for 4.2 days and accumulates 0.67" (17mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. January is the month with the most snowfall. Snow falls for 7.6 days and accumulates 1.89" (48mm) of snow.Daylight
In Macomb, Illinois, the average length of the day in January is 9h and 41min.On the first day of the month, sunrise is at 7:25 am and sunset at 4:46 pm. On the last day of January, in Macomb, sunrise is at 7:13 am and sunset at 5:19 pm CST.
Sunshine
With an average of 4.1h 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 value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In January, the UV index of 2 transforms into the following advice:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. When the Sun is at its strongest around midday, find shade and limit exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month?
How cold is January in Macomb?
What is the average humidity in January in Macomb?
What is the driest month?
How many days does it rain in January?
When does it snow the most?
How much does it snow in January?
How many hours of daylight does Macomb have in January?
When 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?
What is the UV index intensity in January?
Average temperature in January
Macomb, IL
- Average high temperature in January: 30.9°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (30.9°F).
- Average low temperature in January: 19°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (19°F).
Average pressure in January
Macomb, 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 (29.91"Hg).
Average wind speed in January
Macomb, IL
- Average wind speed in January: 10.6mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in January
Macomb, IL
- Average humidity in January: 81%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Macomb, IL
- Average rainfall in January: 0.67"
The wettest month (with the highest rainfall) is May (2.56").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days in January
Macomb, IL
- Average rainfall days in January: 4.2 days
The month with the highest number of rainy days is May (16.2 days).
The month with the least rainy days is January (4.2 days).
Average snowfall in January
Macomb, IL
- Average snowfall in January: 1.89"
The month with the highest snowfall is January (1.89").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Macomb, IL
- Average snowfall days in January: 7.6 days
The month with the highest number of snowfall days is January (7.6 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
Macomb, 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 18min).
- Average sunshine in January: 4h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in January
Macomb, IL
- Average sunshine days in January: 19.8 days
The month with the most sunshine days is December (20.6 days).
The month with the least sunshine days is June (12.2 days).
Average UV index in January
Macomb, 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
Macomb, IL
- Average cloud cover in January: 56
The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 30).
Average visibility in January
Macomb, IL
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Macomb, Illinois, USA
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