December weather forecastGrabill, IN
December
Weather in December
The first month of the winter, December, is also a wintry month in Grabill, Indiana, with an average temperature fluctuating between 26.8°F (-2.9°C) and 36.1°F (2.3°C).Temperature
The arrival of December signals a shift in temperature, down from a chilly 47.3°F (8.5°C) in November to an icy 36.1°F (2.3°C). Grabill's average low-temperature during December nights is observed to be a subzero cold 26.8°F (-2.9°C).Humidity
The average relative humidity in December in Grabill is 83%.Rainfall
In Grabill, in December, it is raining for 9.2 days, with typically 0.94" (24mm) of accumulated precipitation. Throughout the year, there are 140.8 rainfall days, and 16.22" (412mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In December, it is snowing for 9.5 days. Throughout December, 1.1" (28mm) of snow is accumulated. Throughout the year, there are 45.1 snowfall days, and 7.8" (198mm) of snow is accumulated.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:46 am and sunset at 5:11 pm. On the last day of December, sunrise is at 8:05 am and sunset at 5:21 pm EST.
Sunshine
In Grabill, the average sunshine in December is 3.8h.UV index
December is the month with the lowest UV index in Grabill, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, the maximum UV index of 1 suggests these recommendations:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Grabill, IN
- Average high temperature in December: 36.1°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in December: 26.8°F
The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (19°F).
Average pressure in December
Grabill, IN
- Average pressure in December: 30.1"Hg
The months with the highest atmospheric pressure are January and November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Grabill, IN
- Average wind speed in December: 9.6mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in December
Grabill, IN
- Average humidity in December: 83%
The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is October (75%).
Average rainfall in December
Grabill, IN
- Average rainfall in December: 0.94"
The wettest month (with the highest rainfall) is May (2.09").
The driest month (with the least rainfall) is February (0.87").
Average rainfall days in December
Grabill, IN
- Average rainfall days in December: 9.2 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (6.5 days).
Average snowfall in December
Grabill, IN
- Average snowfall in December: 1.1"
The month with the highest snowfall is February (2.2").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Grabill, IN
- Average snowfall days in December: 9.5 days
The month with the highest number of snowfall days is January (12.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Grabill, IN
- Average daylight in December: 9h and 18min
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: 3h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in December
Grabill, IN
- Average sunshine days in December: 15.6 days
The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is June (11.5 days).
Average UV index in December
Grabill, IN
- Average UV index in December: 1
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Grabill, IN
- Average cloud cover in December: 61
The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in December
Grabill, IN
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
