January weather forecast
Tattnall, MT

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Weather in January

January, like December, is another subzero cold winter month in Tattnall, Montana, with an average temperature varying between 10.8°F (-11.8°C) and 24.6°F (-4.1°C).

Temperature

Tattnall, Montana, experiences a recorded average high-temperature of a still freezing cold 24.6°F (-4.1°C) in January, closely aligned with December's 24.8°F (-4°C). Throughout January nights, Tattnall experiences a consistent temperature average of 10.8°F (-11.8°C).

Humidity

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

Rainfall

In January, the rain falls for 3.9 days. Throughout January, 0.51" (13mm) of precipitation is accumulated. Throughout the year, in Tattnall, there are 91.8 rainfall days, and 10.63" (270mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Tattnall are January through May, October through December. In Tattnall, in January, snow falls for 12.3 days, with typically accumulated 3.19" (81mm) of snow. In Tattnall, during the entire year, snow falls for 56.9 days and aggregates up to 17.95" (456mm) of snow.

Daylight

In Tattnall, the average length of the day in January is 8h and 50min.
On the first day of the month, sunrise is at 8:02 am and sunset at 4:24 pm. On the last day of January, in Tattnall, sunrise is at 7:40 am and sunset at 5:06 pm MST.

Sunshine

The average sunshine in January in Tattnall, Montana, is 4.9h.

UV index

The months with the lowest UV index in Tattnall are January through March, October through December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum UV index of 2 during January leads to these instructions:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
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Frequently asked questions

How cold is January in Tattnall?

Tattnall in January has an average high-temperature of 24.6°F (-4.1°C) and an average low-temperature of 10.8°F (-11.8°C).

What is the most humid month in Tattnall?

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

What is the average humidity in January in Tattnall?

In January, the average relative humidity is 85%.

How many days does it rain in January in Tattnall?

In January, the rain falls for 3.9 days. Throughout January, 0.51" (13mm) of precipitation is accumulated.

How much does it snow in Tattnall in January?

In Tattnall, during January, snow falls for 12.3 days and regularly aggregates up to 3.19" (81mm) of snow.

How many hours of daylight does Tattnall have in January?

In Tattnall, the average day length in January is 8h and 50min.

When is the sunrise / sunset in January in Tattnall?

On the first day of January in Tattnall, sunrise is at 8:02 am and sunset at 4:24 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:06 pm MST.

How long on average sun shines in January in Tattnall?

In Tattnall, the average sunshine duration in January is 4.9h.

What is the month with the lowest UV index in Tattnall?

The months with the lowest UV index in Tattnall are January through March, October through December, with an average maximum UV index of 2.

What is the UV index reading in January in Tattnall?

In January, the average daily maximum UV index in Tattnall, Montana, is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe 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
Tattnall, MT

Average temperature in January - Tattnall, MT
  • Average high temperature in January: 24.6°F

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is February (24.4°F).

  • Average low temperature in January: 10.8°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is February (10°F).

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Average pressure in January
Tattnall, MT

Average pressure in January - Tattnall, MT
  • Average pressure in January: 30.13"Hg

The month with the highest atmospheric pressure is February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

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Average wind speed in January
Tattnall, MT

Average wind speed in January - Tattnall, MT
  • Average wind speed in January: 9.2mph

The windiest month (with the highest average wind speed) is April (11.3mph).
The calmest month (with the lowest average wind speed) is February (8.3mph).

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Average humidity in January
Tattnall, MT

Average humidity in January - Tattnall, 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 (41%).

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Average rainfall in January
Tattnall, MT

Average rainfall in January - Tattnall, MT
  • Average rainfall in January: 0.51"

The wettest month (with the highest rainfall) is May (1.73").
The driest month (with the least rainfall) is February (0.43").

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Average rainfall days in January
Tattnall, MT

Average rainfall days in January - Tattnall, MT
  • Average rainfall days in January: 3.9 days

The month with the highest number of rainy days is May (12.7 days).
The month with the least rainy days is February (3.3 days).

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Average snowfall in January
Tattnall, MT

Average snowfall in January - Tattnall, MT
  • Average snowfall in January: 3.19"

The month with the highest snowfall is December (3.43").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Tattnall, MT

Average snowfall days in January - Tattnall, MT
  • Average snowfall days in January: 12.3 days

The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight in January /
Average sunshine in January
Tattnall, MT

Average daylight in January / Average sunshine in January - Tattnall, MT
  • Average daylight in January: 8h and 5min

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: 4h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in January
Tattnall, MT

Average sunshine days in January - Tattnall, MT
  • Average sunshine days in January: 17.6 days

The month with the most sunshine days is October (21 days).
The month with the least sunshine days is April (15.4 days).

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Average UV index in January
Tattnall, MT

Average UV index in January - Tattnall, 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, October, November and December (UV index 2).

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Average cloud cover in January
Tattnall, MT

Average cloud cover in January - Tattnall, MT
  • Average cloud cover in January: 48

The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 18).

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Average visibility in January
Tattnall, MT

Average visibility in January - Tattnall, MT
  • Average visibility in January: 5mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

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Tattnall, Montana, USA

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