January weather forecast
Littleton, CO

The hilly slopes on the South Platte River during the fall, large rocks, and stones in the river below
The hilly slopes on the South Platte River during the fall, large rocks, and stones in the river below

Weather in January

January, the same as December, is a wintry winter month in Littleton, Colorado, with an average temperature fluctuating between 41.5°F (5.3°C) and 22.1°F (-5.5°C).

Temperature

In January, the average high-temperature is practically the same as in December - a still cold 41.5°F (5.3°C). In Littleton, the average low-temperature is 22.1°F (-5.5°C).

Humidity

In Littleton, Colorado, the average relative humidity in January is 63%.

Rainfall

The month with the least rainfall is January, when the rain falls for 3 days and typically collects 0.43" (11mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Littleton, Colorado, during 6.3 snowfall days, 3.23" (82mm) of snow is typically accumulated. In Littleton, during the entire year, snow falls for 42.7 days and aggregates up to 34.92" (887mm) of snow.

Daylight

In January, the average length of the day in Littleton is 9h and 45min.
On the first day of the month, sunrise is at 7:20 am and sunset at 4:46 pm. On the last day of January, sunrise is at 7:08 am and sunset at 5:18 pm MST.

Sunshine

The average sunshine in January in Littleton is 7.1h.

UV index

The months with the lowest UV index in Littleton are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 2 in January interpret into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in January in Littleton?

In Littleton, Colorado, in January, the average high-temperature is 41.5°F (5.3°C), and the average low-temperature is 22.1°F (-5.5°C).

What is the average humidity in January in Littleton?

In January, the average relative humidity in Littleton, Colorado, is 63%.

What is the driest month in Littleton?

The month with the least rainfall in Littleton is January, when the rain falls for 3 days and typically collects 0.43" (11mm) of precipitation.

How much does it rain in Littleton in January?

In Littleton, Colorado, during January, the rain falls for 3 days and regularly aggregates up to 0.43" (11mm) of precipitation.

How many days does it snow in January in Littleton?

In Littleton, Colorado, in January, during 6.3 snowfall days, 3.23" (82mm) of snow is typically accumulated.

What is the average length of the day in January in Littleton?

The average day length in January in Littleton, Colorado, is 9h and 45min.

When are sunrise and sunset in January in Littleton?

In January, on the first day of the month, sunrise is at 7:20 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:18 pm MST.

How long on average sun shines in January in Littleton?

In Littleton, Colorado, the average sunshine duration in January is 7.1h.

When is the lowest UV index in Littleton?

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

What is the UV index intensity in January in Littleton?

The average daily maximum UV index in January in Littleton, Colorado, is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Littleton, CO

Average temperature in January - Littleton, CO
  • Average high temperature in January: 41.5°F

The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is December (41°F).

  • Average low temperature in January: 22.1°F

The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is December (21°F).

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Average pressure in January
Littleton, CO

Average pressure in January - Littleton, CO
  • Average pressure in January: 30.14"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is April (29.91"Hg).

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Average wind speed in January
Littleton, CO

Average wind speed in January - Littleton, CO
  • Average wind speed in January: 6.4mph

The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is September (6mph).

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Average humidity in January
Littleton, CO

Average humidity in January - Littleton, CO
  • Average humidity in January: 63%

The month with the highest relative humidity is February (65%).
The months with the lowest relative humidity are June and August (41%).

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Average rainfall in January
Littleton, CO

Average rainfall in January - Littleton, CO
  • Average rainfall in January: 0.43"

The wettest month (with the highest rainfall) is May (2.05").
The driest month (with the least rainfall) is January (0.43").

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Average rainfall days in January
Littleton, CO

Average rainfall days in January - Littleton, CO
  • Average rainfall days in January: 3 days

The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (3 days).

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Average snowfall in January
Littleton, CO

Average snowfall in January - Littleton, CO
  • Average snowfall in January: 3.23"

The month with the highest snowfall is February (6.3").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Littleton, CO

Average snowfall days in January - Littleton, CO
  • Average snowfall days in January: 6.3 days

The month with the highest number of snowfall days is February (9.2 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
Littleton, CO

Average daylight in January / Average sunshine in January - Littleton, CO
  • Average daylight in January: 9h and 45min

The month with the longest days is June (Average daylight: 14h and 56min).
The month with the shortest days is December (Average daylight: 9h and 25min).

  • Average sunshine in January: 7h and 6min

The months with the most sunshine are June, July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 48min).

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Average sunshine days in January
Littleton, CO

Average sunshine days in January - Littleton, CO
  • Average sunshine days in January: 23.2 days

The month with the most sunshine days is November (23.5 days).
The month with the least sunshine days is July (10 days).

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Average UV index in January
Littleton, CO

Average UV index in January - Littleton, 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
Littleton, CO

Average cloud cover in January - Littleton, CO
  • Average cloud cover in January: 20

The month with the most cloud cover is April (Cloud cover 26).
The month with the least cloud cover is September (Cloud cover 14).

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Average visibility in January
Littleton, CO

Average visibility in January - Littleton, CO
  • 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).

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