Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
Peru, Illinois, in December undergoes a mild reduction in the average high-temperature, shifting from November's frosty 46.8°F (8.2°C) to a wintry 34.9°F (1.6°C). Peru sees an average low-temperature of 24.6°F (-4.1°C) during December.Humidity
The average relative humidity in December is 82%.Rainfall
In Peru, Illinois, in December, it is raining for 7.8 days, with typically 1.61" (41mm) 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
Months with snowfall in Peru are January through April, October through December. In Peru, in December, snow falls for 7.5 days, with typically accumulated 2.2" (56mm) of snow. Throughout the year, in Peru, there are 40.5 snowfall days, and 15.16" (385mm) of snow is accumulated.Daylight
December has the shortest days of the year in Peru, Illinois, with an average of 9h and 18min of daylight.On the first day of December, sunrise is at 7:03 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:37 pm CST.
Sunshine
In Peru, Illinois, the average sunshine in December is 4.2h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the average person.Note: A daily maximum UV index of 1 in December translates into the following instructions:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Frequently asked questions
How cold is December in Peru?
What is the average humidity in December in Peru?
How many days does it rain in December in Peru?
How many days does it snow in December in Peru?
What is the month with the shortest days in Peru?
How many hours of daylight does Peru have in December?
What time are sunrise and sunset in December in Peru?
How long on average sun shines in December in Peru?
When is the lowest UV index in Peru?
What is the UV index intensity in December in Peru?
Average temperature in December
Peru, IL
- Average high temperature in December: 34.9°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 December: 24.6°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 December
Peru, IL
- Average pressure in December: 30.1"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 December
Peru, IL
- Average wind speed in December: 9.6mph
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 December
Peru, IL
- Average humidity in December: 82%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Peru, IL
- Average rainfall in December: 1.61"
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 December
Peru, IL
- Average rainfall days in December: 7.8 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 December
Peru, IL
- Average snowfall in December: 2.2"
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 December
Peru, IL
- Average snowfall days in December: 7.5 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 December /
Average sunshine in December
Peru, IL
- Average daylight in December: 9h and 2min
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 December: 4h and 1min
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 December
Peru, IL
- Average sunshine days in December: 16.3 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 December
Peru, IL
- Average UV index in December: 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 December
Peru, IL
- Average cloud cover in December: 56
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 December
Peru, IL
- Average visibility in December: 6mi
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
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