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 month is January, with an average high-temperature of 28.9°F (-1.7°C) and an average low-temperature of 16.9°F (-8.4°C).Humidity
In Peru, the average relative humidity in January is 83%.Rainfall
In Peru, Illinois, in January, it is raining for 5.5 days, with typically 1.65" (42mm) of accumulated precipitation. In Peru, during the entire year, the rain falls for 151.4 days and collects up to 30.67" (779mm) of precipitation.Snowfall
January through April, October through December are months with snowfall in Peru. January is the month with the most snowfall. Snow falls for 12.1 days and accumulates 4.37" (111mm) of snow.Daylight
In Peru, the average length of the day in January is 9h and 36min.On the first day of January, sunrise is at 7:22 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:10 pm CST.
Sunshine
January has the least sunshine of the year, with an average of 3.9h of sunshine.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 1 in January translates into these instructions:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest?
How cold is it in January?
What is the average humidity in January?
How many days does it rain in January?
When does it snow the most?
How much does it snow in January?
How many hours of daylight does Peru have in January?
When are sunrise and sunset in January?
What is the month with the least sunshine?
How long on average sun shines in January?
What are the months with the lowest UV index?
What is the UV index intensity in January?
Average temperature in January
Peru, IL
- Average high temperature in January: 28.9°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (28.9°F).
- Average low temperature in January: 16.9°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).
Average pressure in January
Peru, 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
Peru, IL
- Average wind speed in January: 10.3mph
The windiest months (with the highest average wind speed) are January and April (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in January
Peru, IL
- Average humidity in January: 83%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall in January
Peru, IL
- Average rainfall in January: 1.65"
The wettest month (with the highest rainfall) is May (4.65").
The driest month (with the least rainfall) is February (1.57").
Average rainfall days in January
Peru, IL
- Average rainfall days in January: 5.5 days
The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is January (5.5 days).
Average snowfall in January
Peru, IL
- Average snowfall in January: 4.37"
The month with the highest snowfall is January (4.37").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Peru, IL
- Average snowfall days in January: 12.1 days
The month with the highest number of snowfall days is January (12.1 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
Peru, 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 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 54min).
Average sunshine days in January
Peru, IL
- Average sunshine days in January: 13.8 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is May (10.4 days).
Average UV index in January
Peru, IL
- Average UV index in January: 1
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in January
Peru, IL
- Average cloud cover in January: 59
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility in January
Peru, IL
- Average visibility in January: 5mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Peru, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location