January weather forecastJefferson City, MT
January
Weather in January
January, the same as December, in Jefferson City, Montana, is another subzero cold winter month, with an average temperature ranging between max 29.7°F (-1.3°C) and min 14.5°F (-9.7°C).Temperature
The onset of January notes an average high-temperature of a still subzero cold 29.7°F (-1.3°C), subtly shifted from December's 27°F (-2.8°C). Jefferson City's average low-temperature is measured at a still freezing cold 14.5°F (-9.7°C) during January.Humidity
January is the most humid month, with an average relative humidity of 86%.Rainfall
In January, in Jefferson City, the rain falls for 7.9 days. Throughout January, 0.83" (21mm) of precipitation is accumulated. In Jefferson City, during the entire year, the rain falls for 133.7 days and collects up to 16.38" (416mm) of precipitation.Snowfall
January through June, September through December are months with snowfall. In Jefferson City, in January, snow falls for 16.3 days, with typically accumulated 6.57" (167mm) of snow. Throughout the year, there are 105.8 snowfall days, and 55.12" (1400mm) of snow is accumulated.Daylight
In January, the average length of the day is 9h and 5min.On the first day of January, sunrise is at 8:11 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:52 am and sunset at 5:30 pm MST.
Sunshine
January and December, with an average of 5.6h of sunshine, are months with the least sunshine.UV index
In January, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index, 2 in January, converts into the following recommendations:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Jefferson City, MT
- Average high temperature in January: 29.7°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is December (27°F).
- Average low temperature in January: 14.5°F
The month with the highest average low temperature is August (48.6°F).
The coldest month (with the lowest average low temperature) is December (12.6°F).
Average pressure in January
Jefferson City, MT
- Average pressure in January: 30.19"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in January
Jefferson City, MT
- Average wind speed in January: 6.5mph
The windiest months (with the highest average wind speed) are January and November (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in January
Jefferson City, MT
- Average humidity in January: 86%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (46%).
Average rainfall in January
Jefferson City, MT
- Average rainfall in January: 0.83"
The wettest month (with the highest rainfall) is June (2.68").
The driest month (with the least rainfall) is December (0.79").
Average rainfall days in January
Jefferson City, MT
- Average rainfall days in January: 7.9 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is November (7.5 days).
Average snowfall in January
Jefferson City, MT
- Average snowfall in January: 6.57"
The month with the highest snowfall is February (9.72").
The months with the least snowfall are July and August (0").
Average snowfall days in January
Jefferson City, MT
- Average snowfall days in January: 16.3 days
The month with the highest number of snowfall days is February (18 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in January /
Average sunshine in January
Jefferson City, MT
- Average daylight in January: 9h and 6min
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 January: 5h and 36min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 36min).
Average sunshine days in January
Jefferson City, MT
- Average sunshine days in January: 14.3 days
The month with the most sunshine days is September (17.9 days).
The month with the least sunshine days is February (8.5 days).
Average UV index in January
Jefferson City, MT
- Average UV index in January: 2
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in January
Jefferson City, MT
- Average cloud cover in January: 44
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in January
Jefferson City, MT
- Average visibility in January: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
