January weather forecast
Mill Iron, MT

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Weather in January

January, like December, is a freezing cold winter month in Mill Iron, Montana, with an average temperature ranging between max 26.1°F (-3.3°C) and min 13.3°F (-10.4°C).

Temperature

January, noted for its average high-temperature of 26.1°F (-3.3°C) and an average low-temperature of 13.3°F (-10.4°C), is considered the coldest month.

Humidity

With an average relative humidity of 85%, January is the most humid month.

Rainfall

The months with the least rainfall are January and December Rain falls for 3.1 days and accumulates 0.55" (14mm) of rain.

Snowfall

Months with snowfall are January through May, September through December. In January, it is snowing for 11.7 days. Throughout January, 2.95" (75mm) of snow is accumulated. Throughout the year, there are 62.4 snowfall days, and 21.97" (558mm) of snow is accumulated.

Daylight

The average length of the day in January is 9h and 9min.
On the first day of the month, sunrise is at 7:38 am and sunset at 4:22 pm. On the last day of January, sunrise is at 7:20 am and sunset at 5:00 pm MST.

Sunshine

In January, the average sunshine is 4.9h.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the average person.
Note: The maximum daily UV index of 1 in January converts into the following recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Updated: Jul 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month?

January, on average, is the coldest month, registering a high temperature of 26.1°F (-3.3°C) and a low of 13.3°F (-10.4°C).

How cold is it in January?

The average high-temperature and low-temperature during January are 26.1°F (-3.3°C) and 13.3°F (-10.4°C) respectively.

What is the most humid month?

The most humid month is January, with an average relative humidity of 85%.

What is the average humidity in January?

In January, the average relative humidity is 85%.

What is the driest month?

January and December are months with the least rain when the rain falls for 3.1 days and typically aggregates up to 0.55" (14mm) of rain.

How many days does it rain in January?

In January, the rain falls for 3.1 days. Throughout January, 0.55" (14mm) of precipitation is accumulated.

How many days does it snow in January?

In Mill Iron, in January, snow falls for 11.7 days, with typically accumulated 2.95" (75mm) of snow.

How many hours of daylight does Mill Iron have in January?

The average day length in January is 9h and 9min.

When is the sunrise / sunset in January?

In January, on the first day of the month, sunrise is at 7:38 am and sunset at 4:22 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 5:00 pm MST.

How long on average sun shines in January?

In January, the average sunshine duration in Mill Iron, Montana, is 4.9h.

When is the lowest UV index?

The months with the lowest UV index in Mill Iron are January and December, with an average maximum UV index of 1.

How high is the UV index in January?

In January, the average daily maximum UV index is 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Mill Iron, MT

Average temperature in January - Mill Iron, MT
  • Average high temperature in January: 26.1°F

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (26.1°F).

  • Average low temperature in January: 13.3°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).

Average pressure in January
Mill Iron, MT

Average pressure in January - Mill Iron, MT
  • Average pressure in January: 30.15"Hg

The months with the highest atmospheric pressure are January and February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

Average wind speed in January
Mill Iron, MT

Average wind speed in January - Mill Iron, MT
  • Average wind speed in January: 11.8mph

The windiest months (with the highest average wind speed) are April and October (11.9mph).
The calmest months (with the lowest average wind speed) are July and August (10.1mph).

Average humidity in January
Mill Iron, MT

Average humidity in January - Mill Iron, 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 (46%).

Average rainfall in January
Mill Iron, MT

Average rainfall in January - Mill Iron, MT
  • Average rainfall in January: 0.55"

The wettest month (with the highest rainfall) is May (2.6").
The driest months (with the least rainfall) are January and December (0.55").

Average rainfall days in January
Mill Iron, MT

Average rainfall days in January - Mill Iron, MT
  • Average rainfall days in January: 3.1 days

The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is January (3.1 days).

Average snowfall in January
Mill Iron, MT

Average snowfall in January - Mill Iron, MT
  • Average snowfall in January: 2.95"

The month with the highest snowfall is February (3.86").
The months with the least snowfall are June, July and August (0").

Average snowfall days in January
Mill Iron, MT

Average snowfall days in January - Mill Iron, MT
  • Average snowfall days in January: 11.7 days

The month with the highest number of snowfall days is February (12 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in January /
Average sunshine in January
Mill Iron, MT

Average daylight in January / Average sunshine in January - Mill Iron, 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: 4h and 5min

The months with the most sunshine are July and August (Average sunshine: 11h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).

Average sunshine days in January
Mill Iron, MT

Average sunshine days in January - Mill Iron, MT
  • Average sunshine days in January: 17.3 days

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (11.9 days).

Average UV index in January
Mill Iron, MT

Average UV index in January - Mill Iron, MT
  • Average UV index in January: 1

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in January
Mill Iron, MT

Average cloud cover in January - Mill Iron, MT
  • Average cloud cover in January: 50

The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are July and August (Cloud cover 18).

Average visibility in January
Mill Iron, MT

Average visibility in January - Mill Iron, 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).

Mill Iron, Montana, USA

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