Westminster (CO) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Westminster.
Climate overview of Westminster
Westminster, Colorado, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 32°C (90°F) in July, while winters cool to 7°C (45°F) in December.
Rain/snowfall is modest, totalling around 442 mm (17 in) annually. The city experiences a distinct dry season from August to March. May tends to be the wettest month. The most sunshine falls in July, with an average of 10.8 hours of daily sunshine.
Westminster Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Westminster — and find the best time to visit.
Monthly Temperature in Westminster
Depending on the time of the year, temperatures range from very warm to chilly in Westminster. Average maximum daytime temperatures range from a very warm 32°C (90°F) in July, the warmest time of the year, to a chilly 7°C (45°F) during cooler months like December.
At night, you can expect temperatures ranging from 15°C (59°F) in July to around -8°C (18°F) during December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Westminster
With annual rain/snowfall averaging 442 mm (17 in), Westminster maintains relatively low precipitation levels throughout the seasons. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, May it receives moderate rainfall, averaging 73 mm (2.9 in) of precipitation, recorded across 12 rainy days. In contrast, the driest month January brings less snow/rainfall, with 13 mm (0.5 in) over 5 snowy/rainy days. For more details, please visit our Westminster Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Westminster
Seasonal changes in sunshine hours are quite dramatic in Westminster. While July receives considerable daily sunshine with up to 10.8 hours, November marks the darkest time of the year, where sunshine is scarce with only 6.5 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Westminster by Month
The relative humidity is moderate throughout the year in Westminster.
The city experiences its highest humidity in December, reaching 56%. In July, the humidity drops to its lowest level at 46%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Wind Speed in Westminster
The average wind speed over the year ranges from 4 m/s (8 knots) to 5 m/s (10 knots). It is lower in January, February, May, June, July, August, September, October, November and December and higher in March and April. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Westminster
Rainfall during this time ranges from 37 mm (1.5 in) in October to 73 mm (2.9 in) in May. This means you can expect a mix of sunny days and occasional showers. Seeking the perfect travel destination for this year? We've created a tool that suggests locations matching your desired weather. Let our weather planner guide your travel decisions.
Frequently asked questions about the climate in Westminster
What is the best time to visit Westminster?
May, June and September typically offer the most optimal weather in Westminster. In contrast, January, February and December tend to have less optimal conditions. Westminster has a distinct dry season from August to March.
What temperatures can I expect in Westminster?
Daytime highs range from 7°C (45°F) in December to 32°C (90°F) in July. Nighttime lows range from -8°C (18°F) to 15°C (59°F). Temperatures vary considerably through the year.
How much rain does Westminster get?
Annual rainfall is around 442 mm (17 in). May is the wettest month with 73 mm (2.9 in), while January is the driest with 13 mm (0.5 in).
How sunny is Westminster?
Westminster receives around 3,102 hours of sunshine per year. July is the sunniest month with 323 hours, while November is the cloudiest with just 195 hours. Overall, Westminster enjoys abundant sunshine.
Westminster 3-Day Forecast
Westminster (CO) 3-Day Forecast
Westminster on the map
Westminster is highlighted — select any city to see its climate.
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