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
As December arrives, Leland Grove's weather displays a decrease in high-temperatures, transitioning from November's cool 50°F (10°C) to an icy 38.7°F (3.7°C). December brings with it a nighttime average temperature of 28°F (-2.2°C).Humidity
In Leland Grove, the average relative humidity in December is 78%.Rainfall
The month with the least rainfall is December, when the rain falls for 7.1 days and typically collects 1.18" (30mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In December, it is snowing for 5.4 days. Throughout December, 0.98" (25mm) of snow is accumulated. In Leland Grove, during the entire year, snow falls for 28.1 days and aggregates up to 7.48" (190mm) of snow.Daylight
The month with the shortest days in Leland Grove is December, with an average of 9h and 24min of daylight.On the first day of December in Leland Grove, sunrise is at 7:01 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:44 pm CST.
Sunshine
In December, the average sunshine in Leland Grove is 4.8h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Leland Grove, Illinois. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Frequently asked questions
How cold is December in Leland Grove?
What is the average humidity in December in Leland Grove?
What is the driest month in Leland Grove?
How many days does it rain in December in Leland Grove?
How much does it snow in Leland Grove in December?
What is the month with the shortest days in Leland Grove?
What is the average length of the day in December in Leland Grove?
When are sunrise and sunset in December in Leland Grove?
How many hours of sunshine does Leland Grove have in December?
What is the month with the lowest UV index in Leland Grove?
How high is the UV index in December in Leland Grove?
Average temperature in December
Leland Grove, IL
- Average high temperature in December: 38.7°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in December: 28°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).
Average pressure in December
Leland Grove, IL
- Average pressure in December: 30.12"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 December
Leland Grove, IL
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in December
Leland Grove, IL
- Average humidity in December: 78%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Leland Grove, IL
- Average rainfall in December: 1.18"
The wettest month (with the highest rainfall) is June (2.72").
The driest month (with the least rainfall) is December (1.18").
Average rainfall days in December
Leland Grove, IL
- Average rainfall days in December: 7.1 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in December
Leland Grove, IL
- Average snowfall in December: 0.98"
The month with the highest snowfall is January (2.24").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Leland Grove, IL
- Average snowfall days in December: 5.4 days
The month with the highest number of snowfall days is January (9.5 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
Leland Grove, IL
- Average daylight in December: 9h and 2min
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 24min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in December
Leland Grove, IL
- Average sunshine days in December: 19.5 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (11.4 days).
Average UV index in December
Leland Grove, IL
- Average UV index in December: 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 December
Leland Grove, IL
- Average cloud cover in December: 50
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are June and September (Cloud cover 29).
Average visibility in December
Leland Grove, IL
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Leland Grove, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location
