January weather forecast
Mack, CO

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Weather in January

January, the same as December, is an icy winter month in Mack, Colorado, with an average temperature fluctuating between 33.8°F (1°C) and 17.2°F (-8.2°C).

Temperature

Temperature readings reach their annual highs in January, averaging 33.8°F (1°C) and a minimum average of 17.2°F (-8.2°C).

Humidity

The most humid month in Mack is January, with an average relative humidity of 79%.

Rainfall

January is the month with the least rainfall. Rain falls for 7.3 days and accumulates 0.47" (12mm) of precipitation.

Snowfall

Months with snowfall are January through April, October through December. In January, in Mack, Colorado, it is snowing for 7.3 days. Throughout January, 2.28" (58mm) of snow is accumulated. Throughout the year, there are 30 snowfall days, and 13.03" (331mm) of snow is accumulated.

Daylight

In January, the average length of the day is 9h and 47min.
On the first day of the month, sunrise is at 7:34 am and sunset at 5:02 pm. On the last day of January, in Mack, sunrise is at 7:23 am and sunset at 5:34 pm MST.

Sunshine

With an average of 6.3h of sunshine, January has the least sunshine of the year in Mack.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: In January, a daily maximum UV index of 2 leads to the following instructions:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
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Frequently asked questions

What is the coldest time of year in Mack?

January is the coldest month, with an average high-temperature of 33.8°F (1°C) and an average low-temperature of 17.2°F (-8.2°C).

How cold is it in Mack in January?

In January, the average high-temperature and low-temperature in Mack, Colorado, are 33.8°F (1°C) and 17.2°F (-8.2°C) respectively.

What is the most humid month in Mack?

The most humid month in Mack, Colorado, is January, with an average relative humidity of 79%.

What is the average humidity in January in Mack?

In January, the average relative humidity in Mack is 79%.

What is the driest month in Mack?

January is the month with the least rainfall in Mack, Colorado. Rain falls for 7.3 days and accumulates 0.47" (12mm) of precipitation.

How much does it rain in Mack in January?

In January, the rain falls for 7.3 days. Throughout January, 0.47" (12mm) of precipitation is accumulated.

How many days does it snow in January in Mack?

In Mack, in January, snow falls for 7.3 days, with typically accumulated 2.28" (58mm) of snow.

How many hours of daylight does Mack have in January?

The average day length in January in Mack is 9h and 47min.

When is the sunrise / sunset in January in Mack?

On the first day of January in Mack, sunrise is at 7:34 am and sunset at 5:02 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 5:34 pm MST.

What is the month with the least sunshine in Mack?

January has the least sunshine of the year, with an average of 6.3h of sunshine.

How long on average sun shines in January in Mack?

In January, the average sunshine duration in Mack is 6.3h.

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

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Mack, Colorado.

How high is the UV index in January in Mack?

In Mack, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a low health threat from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
35.4°F 1.9°C
33.8°F 1°C
37.9°F 3.3°C
Average low temperature
19.9°F -6.7°C
17.2°F -8.2°C
22.1°F -5.5°C
Average pressure
30.2" 767mmHg
30.27" 769mmHg
30.13" 765mmHg
Average wind speed
4.6mph 7.4km/h
4.2mph 6.8km/h
5.2mph 8.4km/h
Average max. wind speed
5mph 8km/h
4.5mph 7.2km/h
5.8mph 9.3km/h
Average wind speed gusts
8.2mph 13.2km/h
7.6mph 12.2km/h
8.9mph 14.3km/h
Average humidity
71%
79%
73%
Average rainfall
0.79" 20mm
0.47" 12mm
0.59" 15mm
Average rainfall days
7.2
7.3
7.2
Average snowfall
4.41" 112mm
2.28" 58mm
2.68" 68mm
Average snowfall days
6.7
7.3
6.8
Average daylight
9h 3min
9h 5min
10h 5min
Average sunshine
6h 4min
6h 2min
7h 0min
Average sunshine days
20.2
20.8
16.8
Average UV index
2
2
2
Average cloud cover
28%
31%
30%
Average visibility
6mi 9.7km
5mi 8km
5mi 8km

Average temperature in January
Mack, CO

Average temperature in January - Mack, CO
  • Average high temperature in January: 33.8°F

The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (33.8°F).

  • Average low temperature in January: 17.2°F

The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (17.2°F).

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Average pressure in January
Mack, CO

Average pressure in January - Mack, CO
  • Average pressure in January: 30.27"Hg

The month with the highest atmospheric pressure is January (30.27"Hg).
The months with the lowest atmospheric pressure are May and June (29.89"Hg).

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Average wind speed in January
Mack, CO

Average wind speed in January - Mack, CO
  • Average wind speed in January: 4.2mph

The windiest month (with the highest average wind speed) is June (7.3mph).
The calmest month (with the lowest average wind speed) is January (4.2mph).

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Average humidity in January
Mack, CO

Average humidity in January - Mack, CO
  • Average humidity in January: 79%

The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is June (30%).

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Average rainfall in January
Mack, CO

Average rainfall in January - Mack, CO
  • Average rainfall in January: 0.47"

The wettest month (with the highest rainfall) is October (1.02").
The driest month (with the least rainfall) is January (0.47").

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Average rainfall days in January
Mack, CO

Average rainfall days in January - Mack, CO
  • Average rainfall days in January: 7.3 days

The month with the highest number of rainy days is July (12.8 days).
The month with the least rainy days is November (5.6 days).

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Average snowfall in January
Mack, CO

Average snowfall in January - Mack, CO
  • Average snowfall in January: 2.28"

The month with the highest snowfall is December (4.41").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in January
Mack, CO

Average snowfall days in January - Mack, CO
  • Average snowfall days in January: 7.3 days

The month with the highest number of snowfall days is January (7.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in January /
Average sunshine in January
Mack, CO

Average daylight in January / Average sunshine in January - Mack, CO
  • Average daylight in January: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in January: 6h and 2min

The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 6h and 18min).

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Average sunshine days in January
Mack, CO

Average sunshine days in January - Mack, CO
  • Average sunshine days in January: 20.8 days

The month with the most sunshine days is November (22.1 days).
The month with the least sunshine days is July (11.6 days).

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Average UV index in January
Mack, CO

Average UV index in January - Mack, CO
  • Average UV index in January: 2

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in January
Mack, CO

Average cloud cover in January - Mack, CO
  • Average cloud cover in January: 31

The month with the most cloud cover is January (Cloud cover 31).
The months with the least cloud cover are June and September (Cloud cover 11).

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Average visibility in January
Mack, CO

Average visibility in January - Mack, CO
  • Average visibility in January: 5mi

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

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Mack, Colorado, USA

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