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 arrival of January records an average high-temperature of a still subzero cold 30.7°F (-0.7°C), closely related to the 28.9°F (-1.7°C) observed in December. Plains records an average nighttime low of 17.6°F (-8°C) in January.Humidity
With an average relative humidity of 93%, January is the most humid month in Plains.Rainfall
January is the month with the most rainfall. Rain falls for 13.3 days and accumulates 3.11" (79mm) of precipitation.Snowfall
Months with snowfall in Plains are January through May, September through December. In Plains, in January, snow falls for 17.8 days, with typically accumulated 13.82" (351mm) of snow. Throughout the year, there are 90.2 snowfall days, and 58.15" (1477mm) of snow is accumulated.Daylight
In January, the average length of the day is 8h and 58min.On the first day of January in Plains, sunrise is at 8:27 am and sunset at 4:59 pm. On the last day of the month, sunrise is at 8:06 am and sunset at 5:38 pm MST.
Sunshine
With an average of 3.5h of sunshine, January has the least sunshine of the year.UV index
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Plains. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index of 1 during January leads to these instructions:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Plains in January?
What is the most humid month in Plains?
What is the average humidity in January in Plains?
What is the rainiest month in Plains?
How many days does it rain in January in Plains?
How much does it snow in Plains in January?
How many hours of daylight does Plains have in January?
What time are sunrise and sunset in January in Plains?
What is the month with the least sunshine in Plains?
How many hours of sunshine does Plains have in January?
What are the months with the lowest UV index in Plains?
How high is the UV index in January in Plains?
Average temperature in January
Plains, MT
- Average high temperature in January: 30.7°F
The warmest months (with the highest average high temperature) are July and August (78.8°F).
The month with the lowest average high temperature is December (28.9°F).
- Average low temperature in January: 17.6°F
The month with the highest average low temperature is August (45.7°F).
The coldest month (with the lowest average low temperature) is December (16.2°F).
Average pressure in January
Plains, 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 (29.93"Hg).
Average wind speed in January
Plains, MT
- Average wind speed in January: 4.2mph
The windiest month (with the highest average wind speed) is April (4.9mph).
The calmest month (with the lowest average wind speed) is December (4mph).
Average humidity in January
Plains, MT
- Average humidity in January: 93%
The month with the highest relative humidity is January (93%).
The months with the lowest relative humidity are July and August (53%).
Average rainfall in January
Plains, MT
- Average rainfall in January: 3.11"
The wettest month (with the highest rainfall) is January (3.11").
The driest month (with the least rainfall) is August (0.39").
Average rainfall days in January
Plains, MT
- Average rainfall days in January: 13.3 days
The month with the highest number of rainy days is March (19.9 days).
The month with the least rainy days is August (5.9 days).
Average snowfall in January
Plains, MT
- Average snowfall in January: 13.82"
The month with the highest snowfall is February (15.12").
The months with the least snowfall are June, July and August (0").
Average snowfall days in January
Plains, MT
- Average snowfall days in January: 17.8 days
The month with the highest number of snowfall days is December (20.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Plains, 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: 3h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in January
Plains, MT
- Average sunshine days in January: 8.8 days
The months with the most sunshine days are July and August (23.3 days).
The month with the least sunshine days is March (5.8 days).
Average UV index in January
Plains, MT
- Average UV index in January: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in January
Plains, MT
- Average cloud cover in January: 65
The month with the most cloud cover is February (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in January
Plains, MT
- Average visibility in January: 3mi
The months with the highest visibility are June, July, August and September (6mi).
The months with the lowest visibility are January, February and December (3mi).
Plains, Montana, USA
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