December weather forecast
Hathaway, MT

Share

Weather in December

The first month of the winter, December, is also a subzero cold month in Hathaway, Montana, with temperature in the range of an average high of 28.9°F (-1.7°C) and an average low of 16.3°F (-8.7°C).

Temperature

A moderate decline in the average high-temperature is seen during December, decreasing from an icy 42.3°F (5.7°C) in November to a subzero cold 28.9°F (-1.7°C). In the month of December, Hathaway's average low-temperature falls to 16.3°F (-8.7°C).

Humidity

In Hathaway, the average relative humidity in December is 78%.

Rainfall

November and December are months with the least rain when the rain falls for 4 days and typically aggregates up to 0.55" (14mm) of rain.

Snowfall

Months with snowfall in Hathaway are January through May, October through December. In December, in Hathaway, it is snowing for 11.5 days. Throughout December, 3.23" (82mm) of snow is accumulated. Throughout the year, there are 56.9 snowfall days, and 18.19" (462mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 8h and 42min of daylight.
On the first day of December in Hathaway, Montana, sunrise is at 7:28 am and sunset at 4:20 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 4:28 pm MST.

Sunshine

January, February and December, with an average of 5.1h of sunshine, are months with the least sunshine.

UV index

The month with the lowest UV index in Hathaway is December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 1 in December transforms into the following instructions:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
[Resources]

Frequently asked questions

How cold is December in Hathaway?

The average high-temperature, in December, in Hathaway, is 28.9°F (-1.7°C), while the average low-temperature is 16.3°F (-8.7°C). In July, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 86°F (30°C).

What is the average humidity in December in Hathaway?

In December, the average relative humidity in Hathaway, Montana, is 78%.

What is the driest month in Hathaway?

November and December are months with the least rain when the rain falls for 4 days and typically aggregates up to 0.55" (14mm) of rain.

How many days does it rain in December in Hathaway?

In Hathaway, during December, the rain falls for 4 days and regularly aggregates up to 0.55" (14mm) of precipitation.

How many days does it snow in December in Hathaway?

In Hathaway, Montana, in December, snow falls for 11.5 days, with typically accumulated 3.23" (82mm) of snow.

What is the month with the shortest days in Hathaway?

December has the shortest days of the year in Hathaway, Montana, with an average of 8h and 42min of daylight.

What is the average length of the day in December in Hathaway?

In December, the average day length in Hathaway, Montana, is 8h and 41min.

When is the sunrise / sunset in December in Hathaway?

On the first day of December in Hathaway, Montana, sunrise is at 7:28 am and sunset at 4:20 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 4:28 pm MST.

What are the months with the least sunshine in Hathaway?

January, February and December, with an average of 5.1h of sunshine, are months with the least sunshine in Hathaway, Montana.

How many hours of sunshine does Hathaway have in December?

In December, the average sunshine duration is 5.1h.

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

With an average maximum UV index of 1, December is the month with the lowest UV index in Hathaway, Montana.

How high is the UV index in December in Hathaway?

The average daily maximum UV index in December is 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe 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 December
Hathaway, MT

Average temperature in December - Hathaway, MT
  • Average high temperature in December: 28.9°F

The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in December: 16.3°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).

[Resources]

Average pressure in December
Hathaway, MT

Average pressure in December - Hathaway, MT
  • Average pressure in December: 30.13"Hg

The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

[Resources]

Average wind speed in December
Hathaway, MT

Average wind speed in December - Hathaway, MT
  • Average wind speed in December: 9.8mph

The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is February (9.3mph).

[Resources]

Average humidity in December
Hathaway, MT

Average humidity in December - Hathaway, MT
  • Average humidity in December: 78%

The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is August (39%).

[Resources]

Average rainfall in December
Hathaway, MT

Average rainfall in December - Hathaway, MT
  • Average rainfall in December: 0.55"

The wettest month (with the highest rainfall) is May (1.93").
The driest months (with the least rainfall) are November and December (0.55").

[Resources]

Average rainfall days in December
Hathaway, MT

Average rainfall days in December - Hathaway, MT
  • Average rainfall days in December: 4 days

The month with the highest number of rainy days is May (13.9 days).
The month with the least rainy days is December (4 days).

[Resources]

Average snowfall in December
Hathaway, MT

Average snowfall in December - Hathaway, MT
  • Average snowfall in December: 3.23"

The month with the highest snowfall is February (3.7").
The months with the least snowfall are June, July, August and September (0").

[Resources]

Average snowfall days in December
Hathaway, MT

Average snowfall days in December - Hathaway, MT
  • Average snowfall days in December: 11.5 days

The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July and August (0 days).

[Resources]

Average daylight in December /
Average sunshine in December
Hathaway, MT

Average daylight in December / Average sunshine in December - Hathaway, MT
  • Average daylight in December: 8h and 4min

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in December: 5h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 48min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 6min).

[Resources]

Average sunshine days in December
Hathaway, MT

Average sunshine days in December - Hathaway, MT
  • Average sunshine days in December: 17.5 days

The month with the most sunshine days is September (20.2 days).
The month with the least sunshine days is May (14.3 days).

[Resources]

Average UV index in December
Hathaway, MT

Average UV index in December - Hathaway, MT
  • Average UV index in December: 1

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).

[Resources]

Average cloud cover in December
Hathaway, MT

Average cloud cover in December - Hathaway, MT
  • Average cloud cover in December: 46

The months with the most cloud cover are February and December (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 16).

[Resources]

Average visibility in December
Hathaway, MT

Average visibility in December - Hathaway, MT
  • Average visibility in December: 6mi

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

[Resources]

Hathaway, Montana, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location