January weather forecast
Groton, VT

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Weather in January

January, the same as December, in Groton, Vermont, is a freezing cold winter month, with an average temperature ranging between min 9.7°F (-12.4°C) and max 22.8°F (-5.1°C).

Temperature

January proves to be the coldest month, recording an average maximum temperature of 22.8°F (-5.1°C) and a minimum temperature of 9.7°F (-12.4°C).

Humidity

January and February, with an average relative humidity of 89%, are the most humid months in Groton.

Rainfall

In Groton, during January, the rain falls for 6.1 days and regularly aggregates up to 2.32" (59mm) of precipitation. Throughout the year, in Groton, there are 157.2 rainfall days, and 28.35" (720mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. January is the month with the most snowfall. Snow falls for 20.5 days and accumulates 12.44" (316mm) of snow.

Daylight

The average length of the day in January is 9h and 19min.
On the first day of January, sunrise is at 7:24 am and sunset at 4:20 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 4:56 pm EST.

Sunshine

In January, the average sunshine in Groton is 2.9h.

UV index

The months with the lowest UV index are January, February and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the average person.
Note: A maximum high UV index of 1 in January translates into the following recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. To protect against the Sun's most potent rays, avoid direct exposure around midday. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
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Frequently asked questions

What is the coldest month in Groton?

January, on average, is the coldest month in Groton, Vermont, registering a high temperature of 22.8°F (-5.1°C) and a low of 9.7°F (-12.4°C).

How cold is January in Groton?

The high-temperature during January is 22.8°F (-5.1°C) and the low-temperature is 9.7°F (-12.4°C).

What is the most humid month in Groton?

The months with the highest humidity in Groton are January and February, with an average relative humidity of 89%.

What is the average humidity in January in Groton?

In Groton, Vermont, the average relative humidity in January is 89%.

How many days does it rain in January in Groton?

In January, the rain falls for 6.1 days. Throughout January, 2.32" (59mm) of precipitation is accumulated.

What is the snowiest month in Groton?

The month with the most snowfall in Groton, Vermont, is January, when snow falls for 20.5 days and typically aggregates up to 12.44" (316mm) of snow.

How many days does it snow in January in Groton?

In January, in Groton, it is snowing for 20.5 days. Throughout January, 12.44" (316mm) of snow is accumulated.

How many hours of daylight does Groton have in January?

In Groton, the average day length in January is 9h and 19min.

When are sunrise and sunset in January in Groton?

On the first day of January, sunrise is at 7:24 am and sunset at 4:20 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 4:56 pm EST.

How many hours of sunshine does Groton have in January?

In January, the average sunshine duration in Groton, Vermont, is 2.9h.

What is the month with the lowest UV index in Groton?

January, February and December, with an average maximum UV index of 1, are months with the lowest UV index in Groton.

What is the UV index intensity in January in Groton?

The average daily maximum UV index in January in Groton, Vermont, is 1. A UV Index reading of 2, and below, represents a minimal hazard to health from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
28.6°F -1.9°C
22.8°F -5.1°C
25.5°F -3.6°C
Average low temperature
18.1°F -7.7°C
9.7°F -12.4°C
10.8°F -11.8°C
Average pressure
30.04" 763mmHg
30.01" 762mmHg
30" 762mmHg
Average wind speed
6mph 9.7km/h
6.3mph 10.1km/h
6.3mph 10.1km/h
Average max. wind speed
6.5mph 10.5km/h
6.8mph 10.9km/h
6.8mph 10.9km/h
Average wind speed gusts
9.3mph 15km/h
9.8mph 15.8km/h
9.6mph 15.4km/h
Average humidity
85%
89%
89%
Average rainfall
2.36" 60mm
2.32" 59mm
2.05" 52mm
Average rainfall days
10.4
6.1
7
Average snowfall
7.52" 191mm
12.44" 316mm
12.36" 314mm
Average snowfall days
19.1
20.5
20.8
Average daylight
8h 5min
9h 2min
10h 3min
Average sunshine
3h 2min
2h 5min
2h 5min
Average sunshine days
8.4
8.3
6.6
Average UV index
1
1
1
Average cloud cover
68%
71%
73%
Average visibility
4mi 6.4km
4mi 6.4km
4mi 6.4km

Average temperature in January
Groton, VT

Average temperature in January - Groton, VT
  • Average high temperature in January: 22.8°F

The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is January (22.8°F).

  • Average low temperature in January: 9.7°F

The month with the highest average low temperature is July (54.5°F).
The coldest month (with the lowest average low temperature) is January (9.7°F).

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Average pressure in January
Groton, VT

Average pressure in January - Groton, VT
  • Average pressure in January: 30.01"Hg

The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in January
Groton, VT

Average wind speed in January - Groton, VT
  • Average wind speed in January: 6.3mph

The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in January
Groton, VT

Average humidity in January - Groton, VT
  • Average humidity in January: 89%

The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is May (76%).

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Average rainfall in January
Groton, VT

Average rainfall in January - Groton, VT
  • Average rainfall in January: 2.32"

The wettest months (with the highest rainfall) are June and October (2.87").
The driest month (with the least rainfall) is September (1.97").

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Average rainfall days in January
Groton, VT

Average rainfall days in January - Groton, VT
  • Average rainfall days in January: 6.1 days

The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is January (6.1 days).

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Average snowfall in January
Groton, VT

Average snowfall in January - Groton, VT
  • Average snowfall in January: 12.44"

The month with the highest snowfall is January (12.44").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Groton, VT

Average snowfall days in January - Groton, VT
  • Average snowfall days in January: 20.5 days

The month with the highest number of snowfall days is February (20.8 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
Groton, VT

Average daylight in January / Average sunshine in January - Groton, VT
  • 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: 2h and 5min

The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 2h and 48min).

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Average sunshine days in January
Groton, VT

Average sunshine days in January - Groton, VT
  • Average sunshine days in January: 8.3 days

The month with the most sunshine days is September (15.5 days).
The month with the least sunshine days is February (6.6 days).

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Average UV index in January
Groton, VT

Average UV index in January - Groton, VT
  • Average UV index in January: 1

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).

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Average cloud cover in January
Groton, VT

Average cloud cover in January - Groton, VT
  • Average cloud cover in January: 71

The month with the most cloud cover is February (Cloud cover 73).
The months with the least cloud cover are July and August (Cloud cover 39).

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Average visibility in January
Groton, VT

Average visibility in January - Groton, VT
  • Average visibility in January: 4mi

The months with the highest visibility are April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February, March and December (4mi).

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Groton, Vermont, USA

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