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
In Green Rock, Illinois, the month of January registers the lowest temperatures, averaging 28.2°F (-2.1°C) at the peak and 15.4°F (-9.2°C) at the lowest.Humidity
January and July, with an average relative humidity of 83%, are the most humid months in Green Rock.Rainfall
In Green Rock, in January, during 3.2 rainfall days, 0.43" (11mm) of precipitation is typically accumulated. Throughout the year, there are 99.4 rainfall days, and 9.57" (243mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, September through December. The month with the most snowfall in Green Rock is January, when snow falls for 7.2 days and typically aggregates up to 1.26" (32mm) of snow.Daylight
The average length of the day in January in Green Rock is 9h and 35min.On the first day of the month, sunrise is at 7:27 am and sunset at 4:42 pm. On the last day of January, sunrise is at 7:14 am and sunset at 5:15 pm CST.
Sunshine
January has the least sunshine of the year, with an average of 3.9h of sunshine.UV index
With an average maximum UV index of 1, January is the month with the lowest UV index in Green Rock. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum high UV index of 1 in January translates into the following recommendations:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Opt for tightly woven and loose clothing to enhance protection from the Sun. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Frequently asked questions
What is the coldest month in Green Rock?
How cold is January in Green Rock?
What are the most humid months in Green Rock?
What is the average humidity in January in Green Rock?
How many days does it rain in January in Green Rock?
When does it snow the most in Green Rock?
How many days does it snow in January in Green Rock?
What is the average length of the day in January in Green Rock?
When is the sunrise / sunset in January in Green Rock?
What is the month with the least sunshine in Green Rock?
How many hours of sunshine does Green Rock have in January?
What is the month with the lowest UV index in Green Rock?
What is the UV index intensity in January in Green Rock?
Average temperature in January
Green Rock, IL
- Average high temperature in January: 28.2°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (28.2°F).
- Average low temperature in January: 15.4°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (15.4°F).
Average pressure in January
Green Rock, 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 (29.91"Hg).
Average wind speed in January
Green Rock, IL
- Average wind speed in January: 10.3mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).
Average humidity in January
Green Rock, IL
- Average humidity in January: 83%
The months with the highest relative humidity are January and July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Green Rock, IL
- Average rainfall in January: 0.43"
The wettest month (with the highest rainfall) is May (1.61").
The driest month (with the least rainfall) is December (0.35").
Average rainfall days in January
Green Rock, IL
- Average rainfall days in January: 3.2 days
The month with the highest number of rainy days is May (13.4 days).
The month with the least rainy days is January (3.2 days).
Average snowfall in January
Green Rock, IL
- Average snowfall in January: 1.26"
The month with the highest snowfall is January (1.26").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days in January
Green Rock, IL
- Average snowfall days in January: 7.2 days
The month with the highest number of snowfall days is January (7.2 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Green Rock, IL
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 6min).
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: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in January
Green Rock, IL
- Average sunshine days in January: 22.2 days
The month with the most sunshine days is December (22.4 days).
The month with the least sunshine days is June (14.4 days).
Average UV index in January
Green Rock, IL
- Average UV index in January: 1
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in January
Green Rock, IL
- Average cloud cover in January: 58
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in January
Green Rock, 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).
Green Rock, Illinois, USA
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