December weather forecastWhitlash, MT
December
Weather in December
December, the first month of the winter in Whitlash, is still a freezing cold month, with an average temperature varying between 27.9°F (-2.3°C) and 16.2°F (-8.8°C).Temperature
The coldest month is December, with an average high-temperature of 27.9°F (-2.3°C) and an average low-temperature of 16.2°F (-8.8°C).Humidity
In Whitlash, the average relative humidity in December is 78%.Rainfall
January and December are months with the least rain in Whitlash when the rain falls for 2.6 days and typically aggregates up to 0.16" (4mm) of rain.Snowfall
Months with snowfall are January through May, September through December. In Whitlash, in December, snow falls for 6.9 days, with typically accumulated 1.02" (26mm) of snow. Throughout the year, there are 38 snowfall days, and 8.78" (223mm) of snow is accumulated.Daylight
The month with the shortest days in Whitlash, Montana, is December, with an average of 8h and 18min of daylight.On the first day of December, sunrise is at 7:58 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 8:18 am and sunset at 4:38 pm MST.
Sunshine
January and December, with an average of 5.4h of sunshine, are months with the least sunshine.UV index
January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Whitlash, Montana. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: In December, the maximum UV index of 2 transforms into these recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. To guard against the harmful effects of the Sun, minimize exposure during midday. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Whitlash, MT
- Average high temperature in December: 27.9°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is December (27.9°F).
- Average low temperature in December: 16.2°F
The month with the highest average low temperature is August (60.3°F).
The coldest months (with the lowest average low temperature) are February and December (16.2°F).
Average pressure in December
Whitlash, MT
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Whitlash, MT
- Average wind speed in December: 10mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).
Average humidity in December
Whitlash, MT
- Average humidity in December: 78%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (39%).
Average rainfall in December
Whitlash, MT
- Average rainfall in December: 0.16"
The wettest month (with the highest rainfall) is June (1.54").
The driest months (with the least rainfall) are January and December (0.16").
Average rainfall days in December
Whitlash, MT
- Average rainfall days in December: 2.6 days
The month with the highest number of rainy days is May (12.4 days).
The months with the least rainy days are January and February (2.1 days).
Average snowfall in December
Whitlash, MT
- Average snowfall in December: 1.02"
The month with the highest snowfall is April (1.65").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Whitlash, MT
- Average snowfall days in December: 6.9 days
The month with the highest number of snowfall days is December (6.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Whitlash, MT
- Average daylight in December: 8h and 18min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in December: 5h and 24min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).
Average sunshine days in December
Whitlash, MT
- Average sunshine days in December: 23.9 days
The months with the most sunshine days are January and December (23.9 days).
The months with the least sunshine days are May and June (16.3 days).
Average UV index in December
Whitlash, MT
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in December
Whitlash, MT
- Average cloud cover in December: 42
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 14).
Average visibility in December
Whitlash, 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).
