December weather forecast
Saco, MT

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Weather in December

The first month of the winter, December, is still a freezing cold month in Saco, Montana, with temperature in the range of an average high of 24.8°F (-4°C) and an average low of 12.7°F (-10.7°C).

Temperature

Saco's weather in December involves a decrease in the average high-temperature, moving down from November's wintry 38.8°F (3.8°C) to a freezing cold 24.8°F (-4°C). During December, the temperature in Saco tends to dip to an average of 12.7°F (-10.7°C) at night.

Humidity

In Saco, Montana, the average relative humidity in December is 83%.

Rainfall

In Saco, Montana, in December, during 4.2 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. Throughout the year, there are 91.8 rainfall days, and 10.63" (270mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. December is the month with the most snowfall in Saco. Snow falls for 11.8 days and accumulates 3.43" (87mm) of snow.

Daylight

The month with the shortest days is December, with an average of 8h and 24min of daylight.
On the first day of the month, sunrise is at 7:40 am and sunset at 4:16 pm. On the last day of December, sunrise is at 8:00 am and sunset at 4:24 pm MST.

Sunshine

The average sunshine in December is 4.8h.

UV index

The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the average person.
Note: The average daily UV index of 2 in December transforms into the following instructions:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
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Frequently asked questions

How cold is it in Saco in December?

In December, in Saco, the average high-temperature is 24.8°F (-4°C), and the average low-temperature is 12.7°F (-10.7°C). In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is estimated at 82.4°F (28°C).

What is the average humidity in December in Saco?

In Saco, the average relative humidity in December is 83%.

How many days does it rain in December in Saco?

In Saco, Montana, in December, during 4.2 rainfall days, 0.51" (13mm) of precipitation is typically accumulated.

When does it snow the most in Saco?

December is the month with the most snowfall in Saco, Montana. Snow falls for 11.8 days and accumulates 3.43" (87mm) of snow.

How many days does it snow in December in Saco?

In Saco, in December, during 11.8 snowfall days, 3.43" (87mm) of snow is typically accumulated.

What is the month with the shortest days in Saco?

December has the shortest days of the year in Saco, Montana, with an average of 8h and 24min of daylight.

How many hours of daylight does Saco have in December?

In Saco, the average day length in December is 8h and 23min.

When are sunrise and sunset in December in Saco?

On the first day of December in Saco, Montana, sunrise is at 7:40 am and sunset at 4:16 pm. On the last day of the month, sunrise is at 8:00 am and sunset at 4:24 pm MST.

How long on average sun shines in December in Saco?

In Saco, Montana, the average sunshine duration in December is 4.8h.

When is the lowest UV index in Saco?

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

What is the UV index reading in December in Saco?

The average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health threat 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 December
Saco, MT

Average temperature in December - Saco, MT
  • Average high temperature in December: 24.8°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 December: 12.7°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 December
Saco, MT

Average pressure in December - Saco, MT
  • Average pressure in December: 30.12"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 December
Saco, MT

Average wind speed in December - Saco, MT
  • Average wind speed in December: 8.5mph

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 December
Saco, MT

Average humidity in December - Saco, MT
  • Average humidity in December: 83%

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 December
Saco, MT

Average rainfall in December - Saco, MT
  • Average rainfall in December: 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 December
Saco, MT

Average rainfall days in December - Saco, MT
  • Average rainfall days in December: 4.2 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 December
Saco, MT

Average snowfall in December - Saco, MT
  • Average snowfall in December: 3.43"

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 December
Saco, MT

Average snowfall days in December - Saco, MT
  • Average snowfall days in December: 11.8 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 December /
Average sunshine in December
Saco, MT

Average daylight in December / Average sunshine in December - Saco, MT
  • Average daylight in December: 8h and 2min

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in December: 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 December
Saco, MT

Average sunshine days in December - Saco, MT
  • Average sunshine days in December: 17.3 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 December
Saco, MT

Average UV index in December - Saco, MT
  • Average UV index in December: 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 December
Saco, MT

Average cloud cover in December - Saco, MT
  • Average cloud cover in December: 49

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 December
Saco, MT

Average visibility in December - Saco, MT
  • Average visibility in December: 6mi

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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Saco, Montana, USA

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