Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
The advent of January observes an average high-temperature of an icy 32.4°F (0.2°C), nearly identical to December's 30°F (-1.1°C). During January, the average low-temperature is a freezing cold 19.8°F (-6.8°C).Humidity
The most humid month is January, with an average relative humidity of 77%.Rainfall
In January, the rain falls for 3.6 days. Throughout January, 0.2" (5mm) of precipitation is accumulated. Throughout the year, there are 68.2 rainfall days, and 4.49" (114mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. In Great Falls, in January, during 7.1 snowfall days, 1.46" (37mm) of snow is typically accumulated. In Great Falls, Montana, during the entire year, snow falls for 45.4 days and aggregates up to 11.61" (295mm) of snow.Daylight
The average length of the day in January in Great Falls is 8h and 58min.On the first day of January, sunrise is at 8:12 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:52 am and sunset at 5:24 pm MST.
Sunshine
January, February and December, with an average of 5.5h of sunshine, are months with the least sunshine.UV index
The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 2 during January leads to these advisories:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in January?
What is the most humid month?
What is the average humidity in January?
How many days does it rain in January?
How many days does it snow in January?
What is the average length of the day in January?
What time are sunrise and sunset in January?
What are the months with the least sunshine?
How long on average sun shines in January in Great Falls?
What is the month with the lowest UV index?
What is the UV index intensity in January?
Average temperature in January
Great Falls, MT
- Average high temperature in January: 32.4°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is December (30°F).
- Average low temperature in January: 19.8°F
The month with the highest average low temperature is August (57.7°F).
The coldest months (with the lowest average low temperature) are February and December (18.3°F).
Average pressure in January
Great Falls, MT
- Average pressure in January: 30.14"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in January
Great Falls, MT
- Average wind speed in January: 11.2mph
The windiest month (with the highest average wind speed) is November (11.4mph).
The calmest month (with the lowest average wind speed) is August (7.7mph).
Average humidity in January
Great Falls, MT
- Average humidity in January: 77%
The month with the highest relative humidity is January (77%).
The month with the lowest relative humidity is August (40%).
Average rainfall in January
Great Falls, MT
- Average rainfall in January: 0.2"
The wettest month (with the highest rainfall) is June (0.87").
The driest month (with the least rainfall) is December (0.16").
Average rainfall days in January
Great Falls, MT
- Average rainfall days in January: 3.6 days
The month with the highest number of rainy days is April (9.9 days).
The month with the least rainy days is December (2.7 days).
Average snowfall in January
Great Falls, MT
- Average snowfall in January: 1.46"
The month with the highest snowfall is February (2.09").
The months with the least snowfall are June, July and August (0").
Average snowfall days in January
Great Falls, MT
- Average snowfall days in January: 7.1 days
The month with the highest number of snowfall days is February (10 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Great Falls, MT
- Average daylight in January: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in January: 5h and 3min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 30min).
Average sunshine days in January
Great Falls, MT
- Average sunshine days in January: 22.4 days
The month with the most sunshine days is July (26.1 days).
The months with the least sunshine days are February and April (16.2 days).
Average UV index in January
Great Falls, MT
- Average UV index in January: 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 January
Great Falls, MT
- Average cloud cover in January: 41
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 13).
Average visibility in January
Great Falls, MT
- Average visibility in January: 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).
Great Falls, Montana, USA
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