December weather forecast
Stow, MA

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Weather in December

The first month of the winter, December, is also a wintry month in Stow, Massachusetts, with an average temperature ranging between max 38.1°F (3.4°C) and min 26.6°F (-3°C).

Temperature

Stow in December experiences a subtle temperature decline, with average high-temperatures reducing from a frosty 48.2°F (9°C) in November to a cold 38.1°F (3.4°C). In Stow, the average temperature during the nights of December drops to a subzero cold 26.6°F (-3°C).

Humidity

In Stow, the average relative humidity in December is 77%.

Rainfall

In Stow, in December, during 9.6 rainfall days, 2.64" (67mm) of precipitation is typically accumulated. In Stow, during the entire year, the rain falls for 140 days and collects up to 27.09" (688mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In December, it is snowing for 6 days. Throughout December, 4.69" (119mm) of snow is accumulated. Throughout the year, there are 34.1 snowfall days, and 23.58" (599mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 6min of daylight.
On the first day of the month, sunrise is at 6:56 am and sunset at 4:14 pm. On the last day of December, sunrise is at 7:15 am and sunset at 4:23 pm EST.

Sunshine

The average sunshine in December is 4.8h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the average person.
Note: In December, the maximum UV index of 2 suggests this advice:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Updated: Jul 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold does it get in December?

In December, in Stow, the average high-temperature is 38.1°F (3.4°C), and the average low-temperature is 26.6°F (-3°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in August is evaluated at 84.2°F (29°C).

What is the average humidity in December?

The average relative humidity in December is 77%.

How much does it rain in December?

In Stow, during December, the rain falls for 9.6 days and regularly aggregates up to 2.64" (67mm) of precipitation.

How much does it snow in December?

In December, it is snowing for 6 days. Throughout December, 4.69" (119mm) of snow is accumulated.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 6min of daylight.

How many hours of daylight does Stow have in December?

In December, the average day length in Stow is 9h and 8min.

What time are sunrise and sunset in December in Stow?

On the first day of December, sunrise is at 6:56 am and sunset at 4:14 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 4:23 pm EST.

How long on average sun shines in December?

In Stow, the average sunshine duration in December is 4.8h.

When is the lowest UV index?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index reading in December?

In Stow, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to UV radiation.
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 December
Stow, MA

Average temperature in December - Stow, MA
  • Average high temperature in December: 38.1°F

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (32.5°F).

  • Average low temperature in December: 26.6°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

Average pressure in December
Stow, MA

Average pressure in December - Stow, MA
  • Average pressure in December: 30.04"Hg

The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in December
Stow, MA

Average wind speed in December - Stow, MA
  • Average wind speed in December: 8mph

The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

Average humidity in December
Stow, MA

Average humidity in December - Stow, MA
  • Average humidity in December: 77%

The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (70%).

Average rainfall in December
Stow, MA

Average rainfall in December - Stow, MA
  • Average rainfall in December: 2.64"

The wettest month (with the highest rainfall) is October (2.68").
The driest month (with the least rainfall) is September (1.38").

Average rainfall days in December
Stow, MA

Average rainfall days in December - Stow, MA
  • Average rainfall days in December: 9.6 days

The month with the highest number of rainy days is May (15.3 days).
The months with the least rainy days are January and February (6.5 days).

Average snowfall in December
Stow, MA

Average snowfall in December - Stow, MA
  • Average snowfall in December: 4.69"

The month with the highest snowfall is February (6.14").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Stow, MA

Average snowfall days in December - Stow, MA
  • Average snowfall days in December: 6 days

The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Stow, MA

Average daylight in December / Average sunshine in December - Stow, MA
  • Average daylight in December: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in December: 4h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

Average sunshine days in December
Stow, MA

Average sunshine days in December - Stow, MA
  • Average sunshine days in December: 16.7 days

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is April (13.7 days).

Average UV index in December
Stow, MA

Average UV index in December - Stow, MA
  • Average UV index in December: 2

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in December
Stow, MA

Average cloud cover in December - Stow, MA
  • Average cloud cover in December: 47

The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 35).

Average visibility in December
Stow, MA

Average visibility in December - Stow, MA
  • Average visibility in December: 6mi

The months with the highest visibility are January, March, April, October, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August and September (5mi).

Stow, Massachusetts, USA

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