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
Temperature records mark January as the coldest month, with highs averaging 31.1°F (-0.5°C) and lows at 19.6°F (-6.9°C).Humidity
In Greer, the average relative humidity in January is 82%.Rainfall
In January, the rain falls for 6.8 days. Throughout January, 1.89" (48mm) of precipitation is accumulated. Throughout the year, there are 156 rainfall days, and 30.83" (783mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. January is the month with the most snowfall. Snow falls for 10.8 days and accumulates 4.06" (103mm) of snow.Daylight
In Greer, the average length of the day in January is 9h and 40min.On the first day of January, sunrise is at 7:13 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 5:06 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 is 2. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 2 in January translates into the following instructions:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. It's recommended to limit sun exposure when its radiation is at its peak during midday. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
How cold is it in January?
What is the average humidity in January?
How much does it rain in Greer in January?
What is the snowiest month?
How many days does it snow in January?
What is the average length of the day in January?
What time are sunrise and sunset in January?
What is the month with the least sunshine?
How long on average sun shines in January?
What is the UV index intensity in January?
Average temperature in January
Greer, IL
- Average high temperature in January: 31.1°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.1°F).
- Average low temperature in January: 19.6°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (19.6°F).
Average pressure in January
Greer, IL
- Average pressure in January: 30.13"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Greer, IL
- Average wind speed in January: 10.6mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in January
Greer, 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
Greer, IL
- Average rainfall in January: 1.89"
The wettest month (with the highest rainfall) is May (4.06").
The driest month (with the least rainfall) is December (1.73").
Average rainfall days in January
Greer, IL
- Average rainfall days in January: 6.8 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is January (6.8 days).
Average snowfall in January
Greer, IL
- Average snowfall in January: 4.06"
The month with the highest snowfall is January (4.06").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Greer, IL
- Average snowfall days in January: 10.8 days
The month with the highest number of snowfall days is January (10.8 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
Greer, 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: 3h and 5min
The month with the most sunshine is June (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in January
Greer, IL
- Average sunshine days in January: 13.3 days
The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is May (10.3 days).
Average UV index in January
Greer, IL
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
Greer, 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 July and August (Cloud cover 34).
Average visibility in January
Greer, 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).
Greer, Illinois, USA
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