January weather forecast
Sphinx, MT

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Weather in January

January, the same as December, in Sphinx, Montana, is another subzero cold winter month, with an average temperature varying between 9.9°F (-12.3°C) and 25°F (-3.9°C).

Temperature

January commences with an average high-temperature of a still subzero cold 25°F (-3.9°C), showing little deviation from December's 22.5°F (-5.3°C). The average temperature in Sphinx during January nights dips to a frigid cold 9.9°F (-12.3°C).

Humidity

The months with the highest humidity are January and February, with an average relative humidity of 90%.

Rainfall

In Sphinx, Montana, during January, the rain falls for 4.8 days and regularly aggregates up to 1.54" (39mm) of precipitation. Throughout the year, there are 116.1 rainfall days, and 23.5" (597mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Sphinx are January through December. In Sphinx, Montana, in January, during 18.9 snowfall days, 12.72" (323mm) of snow is typically accumulated. In Sphinx, during the entire year, snow falls for 151.6 days and aggregates up to 124.06" (3151mm) of snow.

Daylight

In Sphinx, Montana, the average length of the day in January is 9h and 13min.
On the first day of January, sunrise is at 8:02 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 5:28 pm MST.

Sunshine

January has the least sunshine of the year, with an average of 4.7h of sunshine.

UV index

January and February, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: In January, the maximum UV index of 1 suggests these recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
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Frequently asked questions

How cold is January in Sphinx?

January temperatures in Sphinx, Montana, vary between a high-temperature of 25°F (-3.9°C) and a low-temperature of 9.9°F (-12.3°C).

What are the most humid months in Sphinx?

The months with the highest humidity in Sphinx are January and February, with an average relative humidity of 90%.

What is the average humidity in January in Sphinx?

The average relative humidity in January in Sphinx is 90%.

How many days does it rain in January in Sphinx?

In January, in Sphinx, Montana, the rain falls for 4.8 days. Throughout January, 1.54" (39mm) of precipitation is accumulated.

How many days does it snow in January in Sphinx?

In Sphinx, Montana, in January, snow falls for 18.9 days, with typically accumulated 12.72" (323mm) of snow.

How many hours of daylight does Sphinx have in January?

The average day length in January is 9h and 13min.

When are sunrise and sunset in January in Sphinx?

On the first day of January in Sphinx, Montana, sunrise is at 8:02 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 5:28 pm MST.

What is the month with the least sunshine in Sphinx?

The month with the least sunshine is January, with an average of 4.7h of sunshine.

How long on average sun shines in January in Sphinx?

The average sunshine duration in January is 4.7h.

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

The months with the lowest UV index are January and February, with an average maximum UV index of 1.

How high is the UV index in January in Sphinx?

The average daily maximum UV index in January is 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to UV radiation.
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
Sphinx, MT

Average temperature in January - Sphinx, MT
  • Average high temperature in January: 25°F

The warmest month (with the highest average high temperature) is July (74.8°F).
The month with the lowest average high temperature is December (22.5°F).

  • Average low temperature in January: 9.9°F

The month with the highest average low temperature is August (45.1°F).
The coldest month (with the lowest average low temperature) is December (7.9°F).

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Average pressure in January
Sphinx, MT

Average pressure in January - Sphinx, MT
  • Average pressure in January: 30.22"Hg

The month with the highest atmospheric pressure is January (30.22"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in January
Sphinx, MT

Average wind speed in January - Sphinx, MT
  • Average wind speed in January: 7.1mph

The windiest month (with the highest average wind speed) is January (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in January
Sphinx, MT

Average humidity in January - Sphinx, MT
  • Average humidity in January: 90%

The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is August (51%).

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Average rainfall in January
Sphinx, MT

Average rainfall in January - Sphinx, MT
  • Average rainfall in January: 1.54"

The wettest months (with the highest rainfall) are April and May (2.91").
The driest month (with the least rainfall) is July (1.18").

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Average rainfall days in January
Sphinx, MT

Average rainfall days in January - Sphinx, MT
  • Average rainfall days in January: 4.8 days

The month with the highest number of rainy days is June (16.6 days).
The month with the least rainy days is February (4.3 days).

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Average snowfall in January
Sphinx, MT

Average snowfall in January - Sphinx, MT
  • Average snowfall in January: 12.72"

The month with the highest snowfall is April (19.88").
The month with the least snowfall is August (0.08").

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Average snowfall days in January
Sphinx, MT

Average snowfall days in January - Sphinx, MT
  • Average snowfall days in January: 18.9 days

The month with the highest number of snowfall days is March (21 days).
The month with the least snowfall days is August (0.3 days).

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

Average daylight in January / Average sunshine in January - Sphinx, MT
  • Average daylight in January: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in January: 4h and 4min

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

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Average sunshine days in January
Sphinx, MT

Average sunshine days in January - Sphinx, MT
  • Average sunshine days in January: 12.3 days

The month with the most sunshine days is September (14.5 days).
The month with the least sunshine days is May (5.7 days).

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Average UV index in January
Sphinx, MT

Average UV index in January - Sphinx, 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 and February (UV index 1).

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Average cloud cover in January
Sphinx, MT

Average cloud cover in January - Sphinx, MT
  • Average cloud cover in January: 55

The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 17).

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Average visibility in January
Sphinx, MT

Average visibility in January - Sphinx, MT
  • Average visibility in January: 4mi

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

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Sphinx, Montana, USA

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