January weather forecastStarr School, MT

January

Weather in January

January, like December, is another subzero cold winter month in Starr School, Montana, with an average temperature fluctuating between 25.5°F (-3.6°C) and 13.3°F (-10.4°C).

Temperature

As December transitions into January, Starr School records an average high-temperature of a still subzero cold 25.5°F (-3.6°C), showing a gentle shift from the preceding month. During January, Starr School observes a consistent average nighttime temperature of 13.3°F (-10.4°C).

Humidity

January is the most humid month, with an average relative humidity of 93%.

Rainfall

January is the month with the most rainfall. Rain falls for 5.5 days and accumulates 2.56" (65mm) of precipitation.

Snowfall

January through June, September through December are months with snowfall. The month with the most snowfall is January, when snow falls for 22.3 days and typically aggregates up to 20.16" (512mm) of snow.

Daylight

In Starr School, the average length of the day in January is 8h and 50min.
On the first day of the month, sunrise is at 8:24 am and sunset at 4:47 pm. On the last day of January, sunrise is at 8:03 am and sunset at 5:28 pm MST.

Sunshine

January has the least sunshine of the year, with an average of 3.1h of sunshine.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 1 in January transforms into the following instructions:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Updated: Jun 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature, in January, in Starr School, records 25.5°F (-3.6°C), while the low-temperature is 13.3°F (-10.4°C).

With an average relative humidity of 93%, January is the most humid month.

In Starr School, the average relative humidity in January is 93%.

The month with the most rainfall is January, when the rain falls for 5.5 days and typically aggregates up to 2.56" (65mm) of precipitation.

In January, the rain falls for 5.5 days. Throughout January, 2.56" (65mm) of precipitation is accumulated.

The month with the most snowfall in Starr School is January, when snow falls for 22.3 days and typically aggregates up to 20.16" (512mm) of snow.

In Starr School, in January, snow falls for 22.3 days, with typically accumulated 20.16" (512mm) of snow.

The average day length in January is 8h and 50min.

On the first day of January, sunrise is at 8:24 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 8:03 am and sunset at 5:28 pm MST.

With an average of 3.1h of sunshine, January has the least sunshine of the year.

The average sunshine duration in January is 3.1h.

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 1.

In January, the average daily maximum UV index is 1. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Starr School, MT

  • Average high temperature in January: 25.5°F

The warmest month (with the highest average high temperature) is July (73°F).
The month with the lowest average high temperature is December (23.2°F).

  • Average low temperature in January: 13.3°F

The months with the highest average low temperature are July and August (44.2°F).
The coldest month (with the lowest average low temperature) is February (10.9°F).

Average pressure in January
Starr School, MT

  • Average pressure in January: 30.15"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in January
Starr School, MT

  • Average wind speed in January: 6.9mph

The windiest month (with the highest average wind speed) is November (7mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in January
Starr School, MT

  • Average humidity in January: 93%

The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is August (56%).

Average rainfall in January
Starr School, MT

  • Average rainfall in January: 2.56"

The wettest month (with the highest rainfall) is January (2.56").
The driest month (with the least rainfall) is August (0.71").

Average rainfall days in January
Starr School, MT

  • Average rainfall days in January: 5.5 days

The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (4.3 days).

Average snowfall in January
Starr School, MT

  • Average snowfall in January: 20.16"

The month with the highest snowfall is January (20.16").
The months with the least snowfall are July and August (0").

Average snowfall days in January
Starr School, MT

  • Average snowfall days in January: 22.3 days

The month with the highest number of snowfall days is December (22.8 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in January /
Average sunshine in January
Starr School, MT

  • Average daylight in January: 8h and 48min

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 24min).

  • Average sunshine in January: 3h and 6min

The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).

Average sunshine days in January
Starr School, MT

  • Average sunshine days in January: 8.8 days

The month with the most sunshine days is August (19.6 days).
The month with the least sunshine days is February (7.2 days).

Average UV index in January
Starr School, 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, March, November and December (UV index 1).

Average cloud cover in January
Starr School, MT

  • Average cloud cover in January: 71

The month with the most cloud cover is January (Cloud cover 71).
The months with the least cloud cover are July and August (Cloud cover 17).

Average visibility in January
Starr School, MT

  • Average visibility in January: 4mi

The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).