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
January's onset records a minor alteration in the average high-temperature to a still freezing cold 31.8°F (-0.1°C) from December's 31.3°F (-0.4°C). In the month of January, Pompeys Pillar witnesses a consistent average low-temperature of 17.8°F (-7.9°C).Humidity
January is the most humid month, with an average relative humidity of 78%.Rainfall
In Pompeys Pillar, in January, during 6.8 rainfall days, 0.79" (20mm) of precipitation is typically accumulated. In Pompeys Pillar, during the entire year, the rain falls for 103 days and collects up to 11.97" (304mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. In January, it is snowing for 11.8 days. Throughout January, 4.69" (119mm) of snow is accumulated. In Pompeys Pillar, during the entire year, snow falls for 56.7 days and aggregates up to 25.16" (639mm) of snow.Daylight
In Pompeys Pillar, the average length of the day in January is 9h and 8min.On the first day of January in Pompeys Pillar, sunrise is at 7:53 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 5:15 pm MST.
Sunshine
In Pompeys Pillar, the average sunshine in January is 5.8h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 2 in January translates into these instructions:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
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 much does it rain in January?
How many days does it snow in January in Pompeys Pillar?
What is the average length of the day in January?
When is the sunrise / sunset in January?
How many hours of sunshine does Pompeys Pillar have in January?
What are the months with the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Pompeys Pillar, MT
- Average high temperature in January: 31.8°F
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is December (31.3°F).
- Average low temperature in January: 17.8°F
The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).
Average pressure in January
Pompeys Pillar, MT
- Average pressure in January: 30.13"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in January
Pompeys Pillar, MT
- Average wind speed in January: 8.6mph
The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).
Average humidity in January
Pompeys Pillar, MT
- Average humidity in January: 78%
The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is August (38%).
Average rainfall in January
Pompeys Pillar, MT
- Average rainfall in January: 0.79"
The wettest month (with the highest rainfall) is May (1.81").
The driest month (with the least rainfall) is August (0.63").
Average rainfall days in January
Pompeys Pillar, MT
- Average rainfall days in January: 6.8 days
The month with the highest number of rainy days is May (13.6 days).
The month with the least rainy days is December (5.9 days).
Average snowfall in January
Pompeys Pillar, MT
- Average snowfall in January: 4.69"
The month with the highest snowfall is February (5.43").
The months with the least snowfall are June, July and August (0").
Average snowfall days in January
Pompeys Pillar, MT
- Average snowfall days in January: 11.8 days
The month with the highest number of snowfall days is February (12.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Pompeys Pillar, 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 42min).
- Average sunshine in January: 5h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 36min).
Average sunshine days in January
Pompeys Pillar, MT
- Average sunshine days in January: 16.4 days
The month with the most sunshine days is September (21.5 days).
The month with the least sunshine days is February (13.3 days).
Average UV index in January
Pompeys Pillar, MT
- Average UV index in January: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in January
Pompeys Pillar, MT
- Average cloud cover in January: 39
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 13).
Average visibility in January
Pompeys Pillar, 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).
Pompeys Pillar, Montana, USA
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