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 sees the average high-temperature at a still freezing cold 28.9°F (-1.7°C), subtly shifted from December's 27.5°F (-2.5°C). Nighttime temperatures consistently average a still freezing cold 17.6°F (-8°C) during January.Humidity
January is the most humid month in Rollins, with an average relative humidity of 91%.Rainfall
In Rollins, in January, during 10 rainfall days, 1.89" (48mm) of precipitation is typically accumulated. In Rollins, during the entire year, the rain falls for 153.5 days and collects up to 19.76" (502mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. In Rollins, in January, during 18.8 snowfall days, 11.61" (295mm) of snow is typically accumulated. In Rollins, during the entire year, snow falls for 94.5 days and aggregates up to 52.6" (1336mm) of snow.Daylight
In January, the average length of the day is 8h and 55min.On the first day of the month, sunrise is at 8:26 am and sunset at 4:54 pm. On the last day of January, sunrise is at 8:05 am and sunset at 5:34 pm MST.
Sunshine
With an average of 4.1h of sunshine, January has the least sunshine of the year.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 1 during January translates into these guidelines:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is January?
What is the most humid month?
What is the average humidity in January?
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?
When is the sunrise / sunset in January?
What is the month with the least sunshine?
How long on average sun shines in January?
What is the month with the lowest UV index in Rollins?
What is the UV index intensity in January?
Average temperature in January
Rollins, MT
- Average high temperature in January: 28.9°F
The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is December (27.5°F).
- Average low temperature in January: 17.6°F
The month with the highest average low temperature is July (48.7°F).
The coldest month (with the lowest average low temperature) is December (16.7°F).
Average pressure in January
Rollins, MT
- Average pressure in January: 30.17"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in January
Rollins, MT
- Average wind speed in January: 4.3mph
The windiest month (with the highest average wind speed) is April (4.9mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity in January
Rollins, MT
- Average humidity in January: 91%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (53%).
Average rainfall in January
Rollins, MT
- Average rainfall in January: 1.89"
The wettest month (with the highest rainfall) is June (2.36").
The driest months (with the least rainfall) are July and August (0.63").
Average rainfall days in January
Rollins, MT
- Average rainfall days in January: 10 days
The month with the highest number of rainy days is April (18.8 days).
The month with the least rainy days is August (7.2 days).
Average snowfall in January
Rollins, MT
- Average snowfall in January: 11.61"
The month with the highest snowfall is December (12.32").
The months with the least snowfall are June, July and August (0").
Average snowfall days in January
Rollins, MT
- Average snowfall days in January: 18.8 days
The month with the highest number of snowfall days is December (20.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Rollins, MT
- Average daylight in January: 8h and 5min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in January: 4h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in January
Rollins, MT
- Average sunshine days in January: 10.3 days
The month with the most sunshine days is July (20.2 days).
The months with the least sunshine days are February and March (7.8 days).
Average UV index in January
Rollins, MT
- Average UV index in January: 1
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in January
Rollins, MT
- Average cloud cover in January: 59
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in January
Rollins, MT
- Average visibility in January: 4mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
Rollins, Montana, USA
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