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
With the onset of January, the average high-temperature stands at a still subzero cold 30.2°F (-1°C), closely aligned with December's 28°F (-2.2°C). During January, Harrison records an average temperature of 13.8°F (-10.1°C) at night.Humidity
The most humid month in Harrison is January, with an average relative humidity of 85%.Rainfall
In Harrison, in January, it is raining for 8.3 days, with typically 0.63" (16mm) of accumulated precipitation. In Harrison, during the entire year, the rain falls for 134.2 days and collects up to 11.34" (288mm) of precipitation.Snowfall
Months with snowfall are January through June, September through December. In Harrison, during January, snow falls for 14.7 days and regularly aggregates up to 4.45" (113mm) of snow. In Harrison, during the entire year, snow falls for 79.6 days and aggregates up to 30.08" (764mm) of snow.Daylight
In January, the average length of the day is 9h and 10min.On the first day of the month, sunrise is at 8:07 am and sunset at 4:53 pm. On the last day of January, in Harrison, sunrise is at 7:49 am and sunset at 5:31 pm MST.
Sunshine
The month with the least sunshine is January, with an average of 5.9h of sunshine.UV index
In January, the average daily maximum UV index in Harrison is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 2 in January translates into these instructions:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Frequently asked questions
How cold is January in Harrison?
What is the most humid month in Harrison?
What is the average humidity in January in Harrison?
How many days does it rain in January in Harrison?
How many days does it snow in January in Harrison?
What is the average length of the day in January in Harrison?
When are sunrise and sunset in January in Harrison?
What is the month with the least sunshine in Harrison?
How many hours of sunshine does Harrison have in January?
What is the UV index reading in January in Harrison?
Average temperature in January
Harrison, MT
- Average high temperature in January: 30.2°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is December (28°F).
- Average low temperature in January: 13.8°F
The month with the highest average low temperature is August (50.5°F).
The coldest month (with the lowest average low temperature) is December (12.7°F).
Average pressure in January
Harrison, MT
- Average pressure in January: 30.19"Hg
The months with the highest atmospheric pressure are January and December (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in January
Harrison, MT
- Average wind speed in January: 4.8mph
The windiest month (with the highest average wind speed) is April (5.5mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in January
Harrison, MT
- Average humidity in January: 85%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (44%).
Average rainfall in January
Harrison, MT
- Average rainfall in January: 0.63"
The wettest month (with the highest rainfall) is June (1.57").
The driest month (with the least rainfall) is August (0.51").
Average rainfall days in January
Harrison, MT
- Average rainfall days in January: 8.3 days
The month with the highest number of rainy days is April (16.5 days).
The month with the least rainy days is August (7.6 days).
Average snowfall in January
Harrison, MT
- Average snowfall in January: 4.45"
The month with the highest snowfall is February (6.02").
The months with the least snowfall are July and August (0").
Average snowfall days in January
Harrison, MT
- Average snowfall days in January: 14.7 days
The month with the highest number of snowfall days is February (16.5 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in January /
Average sunshine in January
Harrison, MT
- Average daylight in January: 9h and 1min
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 48min).
- Average sunshine in January: 5h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 54min).
Average sunshine days in January
Harrison, MT
- Average sunshine days in January: 14.9 days
The month with the most sunshine days is September (18.7 days).
The month with the least sunshine days is April (9.3 days).
Average UV index in January
Harrison, 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 December (UV index 1).
Average cloud cover in January
Harrison, MT
- Average cloud cover in January: 40
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in January
Harrison, MT
- Average visibility in January: 4mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Harrison, Montana, USA
Weather forecast for your location
2. Allow the app to use your location
