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
Grasston's December weather is characterized by a distinct downswing in high-temperatures, falling from November's icy 37.8°F (3.2°C) to a freezing cold 23.2°F (-4.9°C). The average temperature during December nights dips to a frigid cold 12.9°F (-10.6°C).Humidity
The average relative humidity in December is 88%.Rainfall
In Grasston, in December, during 3 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. Throughout the year, in Grasston, there are 116.6 rainfall days, and 20.71" (526mm) of precipitation is accumulated.Snowfall
Months with snowfall in Grasston, Minnesota, are January through May, October through December. The month with the most snowfall is December, when snow falls for 11.9 days and typically aggregates up to 5.55" (141mm) of snow.Daylight
With an average of 8h and 42min of daylight, December has the shortest days of the year in Grasston.On the first day of the month, sunrise is at 7:34 am and sunset at 4:29 pm. On the last day of December, in Grasston, sunrise is at 7:53 am and sunset at 4:38 pm CST.
Sunshine
In Grasston, the average sunshine in December is 3.2h.UV index
The months with the lowest UV index in Grasston are January, February, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index of 1 during December translates into these guidelines:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Frequently asked questions
How cold is it in Grasston in December?
What is the average humidity in December in Grasston?
How many days does it rain in December in Grasston?
When does it snow the most in Grasston?
How many days does it snow in December in Grasston?
What is the month with the shortest days in Grasston?
How many hours of daylight does Grasston have in December?
What time are sunrise and sunset in December in Grasston?
How long on average sun shines in December in Grasston?
What are the months with the lowest UV index in Grasston?
What is the UV index reading in December in Grasston?
Average temperature in December
Grasston, MN
- Average high temperature in December: 23.2°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (18.1°F).
- Average low temperature in December: 12.9°F
The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (5.2°F).
Average pressure in December
Grasston, MN
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Grasston, MN
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in December
Grasston, MN
- Average humidity in December: 88%
The month with the highest relative humidity is January (91%).
The months with the lowest relative humidity are April and May (72%).
Average rainfall in December
Grasston, MN
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is June (3.39").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in December
Grasston, MN
- Average rainfall days in December: 3 days
The month with the highest number of rainy days is July (16.4 days).
The month with the least rainy days is January (1.8 days).
Average snowfall in December
Grasston, MN
- Average snowfall in December: 5.55"
The month with the highest snowfall is December (5.55").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Grasston, MN
- Average snowfall days in December: 11.9 days
The months with the highest number of snowfall days are January and February (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Grasston, MN
- Average daylight in December: 8h and 4min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in December: 3h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in December
Grasston, MN
- Average sunshine days in December: 16.9 days
The months with the most sunshine days are January and November (18.1 days).
The month with the least sunshine days is June (10.9 days).
Average UV index in December
Grasston, MN
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in December
Grasston, MN
- Average cloud cover in December: 67
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in December
Grasston, MN
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Grasston, Minnesota, USA
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