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
Stepping into January, Roanwood records an average high-temperature of a still freezing cold 24.3°F (-4.3°C), almost consistent with December. Roanwood reports a consistent average low-temperature of 10.9°F (-11.7°C) throughout January nights.Humidity
The most humid month is January, with an average relative humidity of 86%.Rainfall
The months with the least rainfall are January and February Rain falls for 2.5 days and accumulates 0.35" (9mm) of rain.Snowfall
Months with snowfall are January through May, October through December. In Roanwood, in January, during 7.9 snowfall days, 1.93" (49mm) of snow is typically accumulated. Throughout the year, there are 43.8 snowfall days, and 13.11" (333mm) of snow is accumulated.Daylight
In January, the average length of the day is 8h and 48min.On the first day of the month, sunrise is at 7:59 am and sunset at 4:19 pm. On the last day of January, sunrise is at 7:37 am and sunset at 5:01 pm MST.
Sunshine
In Roanwood, the average sunshine in January is 5h.UV index
In Roanwood, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index, 2 in January, converts into the following recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
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?
What is the driest month?
How many days does it rain in January?
How much does it snow in January?
What is the average length of the day in January?
What time are sunrise and sunset in January?
How long on average sun shines in January?
What is the UV index reading in January?
Average temperature in January
Roanwood, MT
- Average high temperature in January: 24.3°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is February (23.7°F).
- Average low temperature in January: 10.9°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is February (10.2°F).
Average pressure in January
Roanwood, MT
- Average pressure in January: 30.14"Hg
The month with the highest atmospheric pressure is February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in January
Roanwood, MT
- Average wind speed in January: 9.8mph
The windiest month (with the highest average wind speed) is April (11.7mph).
The calmest month (with the lowest average wind speed) is February (8.8mph).
Average humidity in January
Roanwood, 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 (42%).
Average rainfall in January
Roanwood, MT
- Average rainfall in January: 0.35"
The wettest month (with the highest rainfall) is June (2.01").
The driest months (with the least rainfall) are January and February (0.35").
Average rainfall days in January
Roanwood, MT
- Average rainfall days in January: 2.5 days
The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in January
Roanwood, MT
- Average snowfall in January: 1.93"
The month with the highest snowfall is December (2.6").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Roanwood, MT
- Average snowfall days in January: 7.9 days
The month with the highest number of snowfall days is February (9.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Roanwood, MT
- Average daylight in January: 8h and 5min
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 January: 5h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in January
Roanwood, MT
- Average sunshine days in January: 21.1 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (13.8 days).
Average UV index in January
Roanwood, MT
- Average UV index in January: 2
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 January
Roanwood, MT
- Average cloud cover in January: 47
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 16).
Average visibility in January
Roanwood, 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).
Roanwood, Montana, USA
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