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, recording an average high temperature of 52.3°F (11.3°C) and a low temperature of 36.9°F (2.7°C), is Irmo's coldest month.Humidity
In January, the average relative humidity is 71%.Rainfall
In Irmo, South Carolina, in January, it is raining for 9.8 days, with typically 2.01" (51mm) of accumulated precipitation. Throughout the year, there are 147.8 rainfall days, and 28.23" (717mm) of precipitation is accumulated.Snowfall
January through March and December are months with snowfall. In Irmo, in January, snow falls for 0.5 days, with typically accumulated 0.24" (6mm) of snow. In Irmo, during the entire year, snow falls for 1.2 days and aggregates up to 0.79" (20mm) of snow.Daylight
In Irmo, South Carolina, the average length of the day in January is 10h and 11min.On the first day of January, sunrise is at 7:30 am and sunset at 5:26 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 5:53 pm EST.
Sunshine
In January, the average sunshine is 5.6h.UV index
January is the month with the lowest UV index in Irmo, South Carolina, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: A daily maximum UV index of 2 in January translates into the following instructions:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
What is the usual temperature for Irmo in January?
What is the average humidity in January?
How much does it rain in January?
How much does it snow in January?
How many hours of daylight does Irmo have in January?
When are sunrise and sunset in January?
How many hours of sunshine does Irmo have in January?
When is the lowest UV index?
What is the UV index intensity in January?
Average temperature in January
Irmo, SC
- Average high temperature in January: 52.3°F
The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is January (52.3°F).
- Average low temperature in January: 36.9°F
The month with the highest average low temperature is July (72.9°F).
The coldest month (with the lowest average low temperature) is January (36.9°F).
Average pressure in January
Irmo, SC
- Average pressure in January: 30.14"Hg
The months with the highest atmospheric pressure are January, November and December (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in January
Irmo, SC
- Average wind speed in January: 7.9mph
The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in January
Irmo, SC
- Average humidity in January: 71%
The month with the highest relative humidity is December (75%).
The month with the lowest relative humidity is July (70%).
Average rainfall in January
Irmo, SC
- Average rainfall in January: 2.01"
The wettest month (with the highest rainfall) is December (3.11").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days in January
Irmo, SC
- Average rainfall days in January: 9.8 days
The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is October (7.8 days).
Average snowfall in January
Irmo, SC
- Average snowfall in January: 0.24"
The month with the highest snowfall is February (0.43").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in January
Irmo, SC
- Average snowfall days in January: 0.5 days
The month with the highest number of snowfall days is January (0.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in January /
Average sunshine in January
Irmo, SC
- Average daylight in January: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in January: 5h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in January
Irmo, SC
- Average sunshine days in January: 19.5 days
The month with the most sunshine days is October (21.8 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in January
Irmo, SC
- Average UV index in January: 2
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in January
Irmo, SC
- Average cloud cover in January: 37
The months with the most cloud cover are February and December (Cloud cover 41).
The months with the least cloud cover are June and October (Cloud cover 28).
Average visibility in January
Irmo, SC
- 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).
Irmo, South Carolina, USA
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