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
The coldest period is January, when temperatures fluctuate between an average high of 35.2°F (1.8°C) and a low of 22.3°F (-5.4°C).Humidity
The average relative humidity in January is 77%.Rainfall
In Rockbridge, in January, it is raining for 5.6 days, with typically 0.71" (18mm) of accumulated precipitation. In Rockbridge, during the entire year, the rain falls for 120.6 days and collects up to 14.17" (360mm) of precipitation.Snowfall
January through March, November and December are months with snowfall in Rockbridge. In Rockbridge, in January, during 6 snowfall days, 0.91" (23mm) of snow is typically accumulated. In Rockbridge, during the entire year, snow falls for 19.1 days and aggregates up to 3.82" (97mm) of snow.Daylight
In Rockbridge, the average length of the day in January is 9h and 47min.On the first day of the month, sunrise is at 7:20 am and sunset at 4:48 pm. On the last day of January, in Rockbridge, Illinois, sunrise is at 7:08 am and sunset at 5:19 pm CST.
Sunshine
The month with the least sunshine in Rockbridge is January, with an average of 4.5h of sunshine.UV index
The months with the lowest UV index in Rockbridge, Illinois, are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 2 in January translates into these instructions:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. The Sun's radiation is especially intense around midday; try to stay in shade during this period. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest in Rockbridge?
How cold is January in Rockbridge?
What is the average humidity in January in Rockbridge?
How much does it rain in Rockbridge in January?
How many days does it snow in January in Rockbridge?
How many hours of daylight does Rockbridge have in January?
When is the sunrise / sunset in January in Rockbridge?
What is the month with the least sunshine in Rockbridge?
How many hours of sunshine does Rockbridge have in January?
What is the month with the lowest UV index in Rockbridge?
How high is the UV index in January in Rockbridge?
Average temperature in January
Rockbridge, IL
- Average high temperature in January: 35.2°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in January: 22.3°F
The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).
Average pressure in January
Rockbridge, IL
- Average pressure in January: 30.15"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in January
Rockbridge, IL
- Average wind speed in January: 9.7mph
The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).
Average humidity in January
Rockbridge, IL
- Average humidity in January: 77%
The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Rockbridge, IL
- Average rainfall in January: 0.71"
The wettest month (with the highest rainfall) is June (1.93").
The driest month (with the least rainfall) is November (0.67").
Average rainfall days in January
Rockbridge, IL
- Average rainfall days in January: 5.6 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (5.6 days).
Average snowfall in January
Rockbridge, IL
- Average snowfall in January: 0.91"
The month with the highest snowfall is February (1.34").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Rockbridge, IL
- Average snowfall days in January: 6 days
The month with the highest number of snowfall days is January (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
Rockbridge, IL
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January: 4h and 3min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in January
Rockbridge, IL
- Average sunshine days in January: 20.5 days
The month with the most sunshine days is December (21.7 days).
The month with the least sunshine days is June (12.4 days).
Average UV index in January
Rockbridge, 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
Rockbridge, IL
- Average cloud cover in January: 51
The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are August and September (Cloud cover 28).
Average visibility in January
Rockbridge, IL
- 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).
Rockbridge, Illinois, USA
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