January weather forecast
Williamsburg, CO

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Weather in January

January, the same as December, is an icy winter month in Williamsburg, Colorado, with an average temperature fluctuating between 19°F (-7.2°C) and 37°F (2.8°C).

Temperature

Williamsburg experiences its lowest average temperatures in January, reaching a peak of 37°F (2.8°C) and a minimum of 19°F (-7.2°C).

Humidity

January and February, with an average relative humidity of 69%, are the most humid months.

Rainfall

January and November are months with the least rain when the rain falls for 3.3 days and typically aggregates up to 0.31" (8mm) of rain.

Snowfall

Months with snowfall are January through May, October through December. In Williamsburg, during January, snow falls for 6 days and regularly aggregates up to 2.28" (58mm) of snow. Throughout the year, there are 38 snowfall days, and 23.94" (608mm) of snow is accumulated.

Daylight

In Williamsburg, the average length of the day in January is 9h and 51min.
On the first day of the month, sunrise is at 7:17 am and sunset at 4:50 pm. On the last day of January, sunrise is at 7:06 am and sunset at 5:21 pm MST.

Sunshine

In Williamsburg, the average sunshine in January is 7.2h.

UV index

January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: An average UV index of 2 in January transforms into this advice:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Avoiding the Sun during its peak radiation time around midday is a healthy practice. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Updated: Jun 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the coldest?

January proves to be the coldest month, recording an average maximum temperature of 37°F (2.8°C) and a minimum temperature of 19°F (-7.2°C).

How cold is it in January?

The high-temperature, in January, in Williamsburg, is 37°F (2.8°C), while the low-temperature averages to 19°F (-7.2°C).

What is the most humid month?

January and February, with an average relative humidity of 69%, are most humid months.

What is the average humidity in January?

The average relative humidity in January in Williamsburg is 69%.

What is the driest month?

The months with the least rainfall are January and November Rain falls for 3.3 days and accumulates 0.31" (8mm) of rain.

How many days does it rain in January?

In Williamsburg, during January, the rain falls for 3.3 days and regularly aggregates up to 0.31" (8mm) of precipitation.

How many days does it snow in January?

In Williamsburg, in January, snow falls for 6 days, with typically accumulated 2.28" (58mm) of snow.

What is the average length of the day in January?

In January, the average day length in Williamsburg is 9h and 51min.

When are sunrise and sunset in January in Williamsburg?

On the first day of January, sunrise is at 7:17 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 5:21 pm MST.

How many hours of sunshine does Williamsburg have in January?

The average sunshine duration in January is 7.2h.

What is the month with the lowest UV index?

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

How high is the UV index in January?

In Williamsburg, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a low health risk 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
Williamsburg, CO

Average temperature in January - Williamsburg, CO
  • Average high temperature in January: 37°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (37°F).

  • Average low temperature in January: 19°F

The month with the highest average low temperature is July (55.8°F).
The coldest month (with the lowest average low temperature) is December (18.5°F).

Average pressure in January
Williamsburg, CO

Average pressure in January - Williamsburg, 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).

Average wind speed in January
Williamsburg, CO

Average wind speed in January - Williamsburg, CO
  • Average wind speed in January: 7.5mph

The windiest months (with the highest average wind speed) are January, February and March (7.5mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

Average humidity in January
Williamsburg, CO

Average humidity in January - Williamsburg, CO
  • Average humidity in January: 69%

The months with the highest relative humidity are January and February (69%).
The month with the lowest relative humidity is June (40%).

Average rainfall in January
Williamsburg, CO

Average rainfall in January - Williamsburg, CO
  • Average rainfall in January: 0.31"

The wettest month (with the highest rainfall) is July (2.2").
The driest months (with the least rainfall) are January and November (0.31").

Average rainfall days in January
Williamsburg, CO

Average rainfall days in January - Williamsburg, CO
  • Average rainfall days in January: 3.3 days

The month with the highest number of rainy days is July (19.5 days).
The month with the least rainy days is November (2.7 days).

Average snowfall in January
Williamsburg, CO

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

The month with the highest snowfall is February (5.63").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Williamsburg, CO

Average snowfall days in January - Williamsburg, CO
  • Average snowfall days in January: 6 days

The month with the highest number of snowfall days is February (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

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

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in January: 7h and 1min

The month with the most sunshine is June (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 7h and 0min).

Average sunshine days in January
Williamsburg, CO

Average sunshine days in January - Williamsburg, CO
  • Average sunshine days in January: 23.4 days

The month with the most sunshine days is November (24.7 days).
The month with the least sunshine days is July (4.7 days).

Average UV index in January
Williamsburg, CO

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

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, October, November and December (UV index 2).

Average cloud cover in January
Williamsburg, CO

Average cloud cover in January - Williamsburg, CO
  • Average cloud cover in January: 21

The months with the most cloud cover are February and April (Cloud cover 23).
The months with the least cloud cover are June, September, October and November (Cloud cover 14).

Average visibility in January
Williamsburg, CO

Average visibility in January - Williamsburg, 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).

Williamsburg, Colorado, USA

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