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 Walnut Hill, the lowest average temperatures are observed in January, with a high of 37.2°F (2.9°C) and a low of 24.3°F (-4.3°C).Humidity
In January, the average relative humidity in Walnut Hill, Illinois, is 77%.Rainfall
In Walnut Hill, during January, the rain falls for 3.7 days and regularly aggregates up to 0.55" (14mm) of precipitation. Throughout the year, there are 83.2 rainfall days, and 6.81" (173mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall in Walnut Hill, Illinois. January is the month with the most snowfall in Walnut Hill. Snow falls for 3.8 days and accumulates 0.28" (7mm) of snow.Daylight
In January, the average length of the day in Walnut Hill is 9h and 51min.On the first day of January, sunrise is at 7:13 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 5:16 pm CST.
Sunshine
The month with the least sunshine is January, with an average of 4.4h of sunshine.UV index
The months with the lowest UV index are January, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The daily maximum UV index of 2 in January interprets into the following advice:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest in Walnut Hill?
How cold is January in Walnut Hill?
What is the average humidity in January in Walnut Hill?
How many days does it rain in January in Walnut Hill?
When does it snow the most in Walnut Hill?
How many days does it snow in January in Walnut Hill?
What is the average length of the day in January in Walnut Hill?
When are sunrise and sunset in January in Walnut Hill?
What is the month with the least sunshine in Walnut Hill?
How many hours of sunshine does Walnut Hill have in January?
What are the months with the lowest UV index in Walnut Hill?
How high is the UV index in January in Walnut Hill?
Average temperature in January
Walnut Hill, IL
- Average high temperature in January: 37.2°F
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (37.2°F).
- Average low temperature in January: 24.3°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in January
Walnut Hill, IL
- Average pressure in January: 30.16"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Walnut Hill, IL
- Average wind speed in January: 9.9mph
The windiest month (with the highest average wind speed) is February (10mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).
Average humidity in January
Walnut Hill, IL
- Average humidity in January: 77%
The months with the highest relative humidity are May and July (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Walnut Hill, IL
- Average rainfall in January: 0.55"
The wettest months (with the highest rainfall) are April and July (0.75").
The driest month (with the least rainfall) is September (0.24").
Average rainfall days in January
Walnut Hill, IL
- Average rainfall days in January: 3.7 days
The month with the highest number of rainy days is May (10.1 days).
The month with the least rainy days is January (3.7 days).
Average snowfall in January
Walnut Hill, IL
- Average snowfall in January: 0.28"
The month with the highest snowfall is January (0.28").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Walnut Hill, IL
- Average snowfall days in January: 3.8 days
The month with the highest number of snowfall days is January (3.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Walnut Hill, IL
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January: 4h and 2min
The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in January
Walnut Hill, IL
- Average sunshine days in January: 24.5 days
The months with the most sunshine days are January and December (24.5 days).
The month with the least sunshine days is May (16.8 days).
Average UV index in January
Walnut Hill, IL
- Average UV index in January: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, November and December (UV index 2).
Average cloud cover in January
Walnut Hill, IL
- Average cloud cover in January: 51
The months with the most cloud cover are January and February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in January
Walnut Hill, 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).
Walnut Hill, Illinois, USA
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