February Weather in Longmont, United States

Last updated: June 24, 2025

In Longmont, United States, the average temperature in February hovers around -1°C (30°F). While temperatures can dip as low as -25°C (-12°F), they can also soar to a pleasant 25°C (77°F). Expect a total precipitation of 26 mm (1.0 in) over approximately 6 days, with the air feeling quite humid at an average of 85%.

February Temperature in Longmont

In February in Longmont, the average temperature is -1°C (30°F), with maximums reaching 25°C (77°F) and minimums dropping as low as -25°C (-12°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both cold and mild weather.

February Weather in Longmont: Daily Temperature Highs, Lows, and Averages

The chart illustrates February temperature patterns in Longmont, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Longmont, February typically has an average temperature of -1°C (30°F), with highs reaching up to 25°C (77°F) and lows dropping to around -25°C (-12°F).

Data source: Temperature data for Longmont generated using information from the Copernicus Climate Change Service.

February Precipitation in Longmont

In Longmont in February, the precipitation amount is 26 mm (1.0 in) over the course of 6 days.

February Precipitation Trends in Longmont

The chart displays monthly precipitation patterns in Longmont, with values for each month alongside February’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how February’s conditions compare to those of other months. In Longmont, February typically receives around 26 mm (1.0 inches) of precipitation spread over approximately 6 days.

Data source: Precipitation data for February generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

February Humidity in Longmont

In Longmont in February humidity is 85%. With an average temperature of -1°C (30°F), this humidity feels like a heavy, damp blanket that envelops you, making even short excursions outside feel chilling and uncomfortable.

February Average Humidity in Longmont

This chart illustrates the average monthly humidity levels in Longmont, with February’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In February, average humidity in Longmont is approximately 85%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for February generated using information from the Copernicus Climate Change Service.

February UV Index in Longmont

In Longmont in February, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Longmont, you can refer to this Hourly UV Index in Longmont.

Maximum UV Index Levels in Longmont for February

The chart shows the monthly maximum UV Index (UVI) for Longmont in February, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In February, the maximum UV index in Longmont typically reaches 6, which falls under the high exposure category.

Data source: Longmont February UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How February Weather in Longmont Compares to Other Months

Weather in Longmont varies notably across the year, with each month offering distinct climate conditions. This page compares February’s weather to other months in Longmont, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Longmont, showing how February’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (30°F)	19 mm (0.8 inches)	84%	moderate
February Weather	-1°C (30°F)	26 mm (1.0 inches)	85%	high
March Weather	5°C (40°F)	56 mm (2.2 inches)	75%	very high
April Weather	9°C (48°F)	55 mm (2.2 inches)	67%	extreme
May Weather	13°C (56°F)	119 mm (4.7 inches)	67%	extreme
June Weather	20°C (69°F)	42 mm (1.6 inches)	68%	extreme
July Weather	23°C (75°F)	31 mm (1.2 inches)	62%	extreme
August Weather	22°C (73°F)	43 mm (1.7 inches)	63%	extreme
September Weather	19°C (66°F)	27 mm (1.1 inches)	63%	very high
October Weather	9°C (49°F)	38 mm (1.5 inches)	72%	high
November Weather	4°C (40°F)	23 mm (0.9 inches)	79%	moderate
December Weather	0°C (33°F)	15 mm (0.6 inches)	85%	moderate