February weather forecast
Boulder, CO

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The old building of the University of Colorado in Boulder, Colorado
The old building of the University of Colorado in Boulder, Colorado

Weather in February

Boulder's February weather is marked by an upward push in temperature, making it slightly warmer than January. The increased warmth is paired with amplified snowfall up to 5.83" (148mm). These weather conditions, coupled with longer daylight hours, contribute to a more pleasant ambience when compared to the previous month. Come March though, a significant transformation is observed as Boulder bids adieu to the winter season. It, therefore, becomes a key period of transition between winter and the upcoming spring.

Temperature

Boulder, Colorado, experiences an average high-temperature of a still cold 36.1°F (2.3°C) with the onset of February, subtly varied from January's 36.7°F (2.6°C). In Boulder, the nighttime temperature averages to a freezing cold 18°F (-7.8°C) during February.

Humidity

February is the most humid month in Boulder, with an average relative humidity of 70%.

Rainfall

In Boulder, Colorado, during February, the rain falls for 4 days and regularly aggregates up to 0.75" (19mm) of precipitation. In Boulder, Colorado, during the entire year, the rain falls for 117.3 days and collects up to 14.17" (360mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Boulder. In Boulder, in February, during 10.3 snowfall days, 5.83" (148mm) of snow is typically accumulated. Throughout the year, in Boulder, there are 44.8 snowfall days, and 37.01" (940mm) of snow is accumulated.

Daylight

In February, the average length of the day in Boulder, Colorado, is 10h and 43min.
On the first day of the month, sunrise is at 7:09 am and sunset at 5:19 pm. On the last day of February, in Boulder, sunrise is at 6:34 am and sunset at 5:52 pm MST.

Sunshine

February has the least sunshine of the year in Boulder, with an average of 6.6h of sunshine.

UV index

The months with the lowest UV index in Boulder are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: An average maximum UV index of 2 in February leads to these recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is February in Boulder?

The high-temperature in Boulder, Colorado, during February is 36.1°F (2.3°C) and the low-temperature is 18°F (-7.8°C).

What is the most humid month in Boulder?

With an average relative humidity of 70%, February is the most humid month in Boulder.

What is the average humidity in February in Boulder?

In Boulder, the average relative humidity in February is 70%.

How much does it rain in Boulder in February?

In Boulder, in February, during 4 rainfall days, 0.75" (19mm) of precipitation is typically accumulated.

How much does it snow in Boulder in February?

In Boulder, Colorado, in February, snow falls for 10.3 days, with typically accumulated 5.83" (148mm) of snow.

What is the average length of the day in February in Boulder?

The average day length in February in Boulder, Colorado, is 10h and 43min.

When are sunrise and sunset in February in Boulder?

On the first day of February in Boulder, Colorado, sunrise is at 7:09 am and sunset at 5:19 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 5:52 pm MST.

What is the month with the least sunshine in Boulder?

The month with the least sunshine is February, with an average of 6.6h of sunshine.

How long on average sun shines in February in Boulder?

In Boulder, the average sunshine duration in February is 6.6h.

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

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

What is the UV index intensity in February in Boulder?

In Boulder, the average daily maximum UV index in February is 2. A UV Index estimate of 2, and below, represents a low health threat 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 February
Boulder, CO

Average temperature in February - Boulder, CO
  • Average high temperature in February: 36.1°F

The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is December (35.2°F).

  • Average low temperature in February: 18°F

The month with the highest average low temperature is July (55.2°F).
The coldest month (with the lowest average low temperature) is February (18°F).

Average pressure in February
Boulder, CO

Average pressure in February - Boulder, CO
  • Average pressure in February: 30.08"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are April, May and June (29.92"Hg).

Average wind speed in February
Boulder, CO

Average wind speed in February - Boulder, CO
  • Average wind speed in February: 6.9mph

The windiest month (with the highest average wind speed) is January (7.3mph).
The calmest months (with the lowest average wind speed) are May, July, August and September (5.7mph).

Average humidity in February
Boulder, CO

Average humidity in February - Boulder, CO
  • Average humidity in February: 70%

The month with the highest relative humidity is February (70%).
The months with the lowest relative humidity are June, August and September (45%).

Average rainfall in February
Boulder, CO

Average rainfall in February - Boulder, CO
  • Average rainfall in February: 0.75"

The wettest month (with the highest rainfall) is May (2.48").
The driest month (with the least rainfall) is January (0.39").

Average rainfall days in February
Boulder, CO

Average rainfall days in February - Boulder, CO
  • Average rainfall days in February: 4 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (3.3 days).

Average snowfall in February
Boulder, CO

Average snowfall in February - Boulder, CO
  • Average snowfall in February: 5.83"

The month with the highest snowfall is April (7.76").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in February
Boulder, CO

Average snowfall days in February - Boulder, CO
  • Average snowfall days in February: 10.3 days

The month with the highest number of snowfall days is February (10.3 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in February /
Average sunshine in February
Boulder, CO

Average daylight in February / Average sunshine in February - Boulder, CO
  • Average daylight in February: 10h and 4min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in February: 6h and 4min

The months with the most sunshine are June and July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).

Average sunshine days in February
Boulder, CO

Average sunshine days in February - Boulder, CO
  • Average sunshine days in February: 15.8 days

The month with the most sunshine days is January (22.2 days).
The month with the least sunshine days is July (9.9 days).

Average UV index in February
Boulder, CO

Average UV index in February - Boulder, CO
  • Average UV index in February: 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, November and December (UV index 2).

Average cloud cover in February
Boulder, CO

Average cloud cover in February - Boulder, CO
  • Average cloud cover in February: 27

The months with the most cloud cover are April and May (Cloud cover 28).
The month with the least cloud cover is September (Cloud cover 16).

Average visibility in February
Boulder, CO

Average visibility in February - Boulder, CO
  • Average visibility in February: 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).

Boulder, Colorado, USA

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