January weather forecast
Sumner, ME

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Weather in January

January, the same as December, in Sumner, Maine, is another subzero cold winter month, with an average temperature fluctuating between 23.7°F (-4.6°C) and 10°F (-12.2°C).

Temperature

January proves to be the coldest month, recording an average maximum temperature of 23.7°F (-4.6°C) and a minimum temperature of 10°F (-12.2°C).

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. In Sumner, during the entire year, the rain falls for 146.3 days and collects up to 28.31" (719mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Sumner, in January, during 14.5 snowfall days, 9.41" (239mm) of snow is typically accumulated. In Sumner, Maine, during the entire year, snow falls for 69.3 days and aggregates up to 48.15" (1223mm) of snow.

Daylight

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, in Sumner, Maine, sunrise is at 7:01 am and sunset at 4:48 pm EST.

Sunshine

In January, the average sunshine is 4.4h.

UV index

In Sumner, the average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: A daily maximum UV index of 2 in January translates into the following instructions:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. When the Sun is at its strongest around midday, find shade and limit exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
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Frequently asked questions

What is the coldest time of year in Sumner?

Sumner, Maine, records the coldest temperatures in January, averaging a high of 23.7°F (-4.6°C) and a low of 10°F (-12.2°C).

How cold is January in Sumner?

Sumner in January has an average high-temperature of 23.7°F (-4.6°C) and an average low-temperature of 10°F (-12.2°C).

What is the most humid month in Sumner?

The months with the highest humidity in Sumner are January through March, with an average relative humidity of 86%.

What is the average humidity in January in Sumner?

The average relative humidity in January in Sumner is 86%.

How many days does it rain in January in Sumner?

In Sumner, Maine, in January, during 8.4 rainfall days, 2.09" (53mm) of precipitation is typically accumulated.

How many days does it snow in January in Sumner?

In Sumner, in January, snow falls for 14.5 days, with typically accumulated 9.41" (239mm) of snow.

How many hours of daylight does Sumner have in January?

The average day length in January in Sumner is 9h and 18min.

When are sunrise and sunset in January in Sumner?

In January, on the first day of the month, sunrise is at 7:17 am and sunset at 4:12 pm. On the last day of the month, in Sumner, Maine, sunrise is at 7:01 am and sunset at 4:48 pm EST.

How many hours of sunshine does Sumner have in January?

In January, the average sunshine duration is 4.4h.

What is the UV index reading in January in Sumner?

In Sumner, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Sumner, ME

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).

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Average pressure in January
Sumner, ME

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).

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Average wind speed in January
Sumner, ME

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).

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Average humidity in January
Sumner, ME

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%).

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Average rainfall in January
Sumner, ME

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").

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Average rainfall days in January
Sumner, ME

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).

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Average snowfall in January
Sumner, ME

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").

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Average snowfall days in January
Sumner, ME

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).

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Average daylight in January /
Average sunshine in January
Sumner, ME

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).

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Average sunshine days in January
Sumner, ME

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).

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Average UV index in January
Sumner, ME

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).

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Average cloud cover in January
Sumner, ME

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).

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Average visibility in January
Sumner, ME

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).

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Sumner, Maine, USA

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