December weather forecastHathaway, MT
December
Weather in December
December, the first month of the winter in Hathaway, is still a freezing cold month, with an average temperature ranging between min 16.3°F (-8.7°C) and max 28.9°F (-1.7°C).Temperature
December suggests a modest reduction in the average high-temperature, shifting from a cold 42.3°F (5.7°C) in November to a freezing cold 28.9°F (-1.7°C). Hathaway records an average temperature drop to 16.3°F (-8.7°C) in December.Humidity
In December, the average relative humidity is 78%.Rainfall
The months with the least rainfall are November and December Rain falls for 4 days and accumulates 0.55" (14mm) of rain.Snowfall
Months with snowfall are January through May, October through December. In December, 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
December has the shortest days of the year, with an average of 8h and 42min of daylight.On the first day of December, 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
The months with the least sunshine are January, February and December, with an average of 5.1h of sunshine.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: A daily maximum UV index of 1 in December translates into the following instructions:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
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").
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).
Average daylight in December /
Average sunshine in December
Hathaway, MT
- Average daylight in December: 8h and 42min
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 6min
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).
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).
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).
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).
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).
