Arvada (CO) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Arvada.
Climate overview of Arvada
Temperatures in Arvada, Colorado, United States of America, vary greatly throughout the year. July is the hottest month at 32°C (90°F), while December is the coldest at 7°C (45°F).
Rain/snowfall is modest, totalling around 440 mm (17 in) annually. The city experiences a distinct dry season from August to March, with very warm summers and cold winters. May tends to be the wettest month. The sunniest month is July, with 10.8 hours of sunshine per day on average.
Arvada Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Arvada - and find the best time to visit.
Monthly Temperature in Arvada
The climate in Arvada is known for significant temperature differences throughout the year, making the weather dynamic. 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 Arvada
Arvada maintains relatively dry conditions year-round, recording average annual precipitation of 440 mm (17 in). Significant seasonal changes in precipitation occur throughout the year. In the wettest month, May it receives moderate rainfall, averaging 74 mm (2.9 in) of precipitation, recorded across 12 rainy days. In contrast, the driest month January brings less snow/rainfall, with 14 mm (0.6 in) over 5 snowy/rainy days. For more details, please visit our Arvada 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 Arvada
Seasonal changes in sunshine hours are quite dramatic in Arvada. 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 Arvada by Month
The relative humidity is moderate throughout the year in Arvada.
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 Arvada
The mean wind speed varies between 4 m/s (8 knots) and 5 m/s (10 knots) throughout the year. It is lowest in January, February, May, June, July, August, September, October, November and December and highest during March and April. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Arvada
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, June and September
- Warmest weather: July and August
- Most sunshine: June and July
- Fewest rainy days: January, February, March and November
- Seasonal pattern: A distinct dry season from August to March, with very warm summers and cold winters
- Coldest conditions: December, with freezing nights around -8°C (18°F).
Frequently asked questions about the climate in Arvada
What is the best time to visit Arvada?
May, June and September typically offer the most optimal weather in Arvada. In contrast, January, February and December tend to have less optimal conditions. Arvada has a distinct dry season from August to March, with very warm summers and cold winters.
What temperatures can I expect in Arvada?
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 Arvada get?
Annual rainfall is around 440 mm (17 in). May is the wettest month with 74 mm (2.9 in), while January is the driest with 14 mm (0.6 in).
How sunny is Arvada?
Arvada 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, Arvada enjoys abundant sunshine.
Arvada 3-Day Forecast
Arvada (CO) 3-Day Forecast
Arvada on the map
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