Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
January is the coldest month, exhibiting average temperatures of 23.7°F (-4.6°C) at the peak and 10°F (-12.2°C) at the base.Humidity
The months with the highest humidity are January through March, with an average relative humidity of 86%.Rainfall
In Sumner, in January, it is raining for 8.4 days, with typically 2.09" (53mm) of accumulated precipitation. Throughout the year, there are 146.3 rainfall days, and 28.31" (719mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Sumner, during January, snow falls for 14.5 days and regularly aggregates up to 9.41" (239mm) of snow. Throughout the year, in Sumner, there are 69.3 snowfall days, and 48.15" (1223mm) of snow is accumulated.Daylight
In Sumner, the average length of the day in January is 9h and 18min.On the first day of the month, sunrise is at 7:17 am and sunset at 4:12 pm. On the last day of January, sunrise is at 7:01 am and sunset at 4:48 pm EST.
Sunshine
In January, the average sunshine is 4.4h.UV index
The average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: In January, a daily UV index of 2 turns into the following recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. To protect against the Sun's most potent rays, avoid direct exposure around midday. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month?
How cold is January?
What are the most humid months?
What is the average humidity in January?
How much does it rain in January?
How much does it snow in January?
How many hours of daylight does Sumner have in January?
What time are sunrise and sunset in January?
How many hours of sunshine does Sumner have in January?
What is the UV index intensity in January?
Average temperature in January
Sumner, ME
- Average high temperature in January: 23.7°F
The warmest month (with the highest average high temperature) is July (76.8°F).
The month with the lowest average high temperature is January (23.7°F).
- Average low temperature in January: 10°F
The month with the highest average low temperature is July (55.4°F).
The coldest month (with the lowest average low temperature) is January (10°F).
Average pressure in January
Sumner, ME
- Average pressure in January: 29.98"Hg
The month with the highest atmospheric pressure is November (30.05"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in January
Sumner, ME
- Average wind speed in January: 6.5mph
The windiest month (with the highest average wind speed) is March (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in January
Sumner, ME
- Average humidity in January: 86%
The months with the highest relative humidity are January, February and March (86%).
The months with the lowest relative humidity are May and November (76%).
Average rainfall in January
Sumner, ME
- Average rainfall in January: 2.09"
The wettest month (with the highest rainfall) is October (3.31").
The driest month (with the least rainfall) is July (1.85").
Average rainfall days in January
Sumner, ME
- Average rainfall days in January: 8.4 days
The month with the highest number of rainy days is June (15.5 days).
The month with the least rainy days is February (8.2 days).
Average snowfall in January
Sumner, ME
- Average snowfall in January: 9.41"
The month with the highest snowfall is February (12.28").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Sumner, ME
- Average snowfall days in January: 14.5 days
The month with the highest number of snowfall days is February (15.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Sumner, ME
- Average daylight in January: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in January: 4h and 2min
The month with the most sunshine is August (Average sunshine: 9h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in January
Sumner, ME
- Average sunshine days in January: 14.8 days
The month with the most sunshine days is September (16.7 days).
The months with the least sunshine days are February and April (11.3 days).
Average UV index in January
Sumner, ME
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in January
Sumner, ME
- Average cloud cover in January: 54
The month with the most cloud cover is February (Cloud cover 57).
The month with the least cloud cover is September (Cloud cover 40).
Average visibility in January
Sumner, ME
- Average visibility in January: 4mi
The months with the highest visibility are May, June, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, July, August and September (4mi).
Sumner, Maine, USA
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