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 begins, there is a noticeable decrease in the average high-temperature, falling from an icy 41°F (5°C) in November to a subzero cold 26.1°F (-3.3°C). Throughout December, Lewiston's nights cool down to an average of 15.8°F (-9°C).Humidity
The average relative humidity in December in Lewiston is 88%.Rainfall
In Lewiston, in December, it is raining for 2.9 days, with typically 1.1" (28mm) of accumulated precipitation. Throughout the year, in Lewiston, there are 122.7 rainfall days, and 24.06" (611mm) of precipitation is accumulated.Snowfall
Months with snowfall in Lewiston, Minnesota, are January through May, October through December. In Lewiston, in December, snow falls for 12.8 days, with typically accumulated 3.5" (89mm) of snow. In Lewiston, during the entire year, snow falls for 59.2 days and aggregates up to 21.65" (550mm) of snow.Daylight
December has the shortest days of the year in Lewiston, with an average of 9h and 0min of daylight.On the first day of December, sunrise is at 7:22 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 4:39 pm CST.
Sunshine
The average sunshine in December in Lewiston is 3.6h.UV index
January, February, November 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: During December, 1 as the daily maximum UV index converts into the following advice:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Lewiston?
What is the average humidity in December in Lewiston?
How much does it rain in Lewiston in December?
How many days does it snow in December in Lewiston?
What is the month with the shortest days in Lewiston?
How many hours of daylight does Lewiston have in December?
When is the sunrise / sunset in December in Lewiston?
How many hours of sunshine does Lewiston have in December?
When is the lowest UV index in Lewiston?
How high is the UV index in December in Lewiston?
Average temperature in December
Lewiston, MN
- Average high temperature in December: 26.1°F
The warmest month (with the highest average high temperature) is July (78.3°F).
The month with the lowest average high temperature is January (20.7°F).
- Average low temperature in December: 15.8°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (7.5°F).
Average pressure in December
Lewiston, MN
- Average pressure in December: 30.11"Hg
The months with the highest atmospheric pressure are January and February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Lewiston, MN
- Average wind speed in December: 9.5mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in December
Lewiston, MN
- Average humidity in December: 88%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is October (75%).
Average rainfall in December
Lewiston, MN
- Average rainfall in December: 1.1"
The wettest month (with the highest rainfall) is June (4.33").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days in December
Lewiston, MN
- Average rainfall days in December: 2.9 days
The month with the highest number of rainy days is June (18.2 days).
The month with the least rainy days is February (1.9 days).
Average snowfall in December
Lewiston, MN
- Average snowfall in December: 3.5"
The month with the highest snowfall is February (5.94").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Lewiston, MN
- Average snowfall days in December: 12.8 days
The month with the highest number of snowfall days is January (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Lewiston, MN
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 3h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in December
Lewiston, MN
- Average sunshine days in December: 16.5 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is June (9.3 days).
Average UV index in December
Lewiston, 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
Lewiston, MN
- Average cloud cover in December: 64
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Lewiston, MN
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, July and December (5mi).
Lewiston, Minnesota, USA
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