- WinterDec–Feb18°48°
- December17°47°
- January18°48°
- February19°49°
- SpringMar–May34°64°
- March26°57°
- April33°62°
- May43°72°
- SummerJun–Aug54°86°
- June51°83°
- July57°89°
- August54°86°
- AutumnSep–Nov34°67°
- September45°79°
- October34°66°
- November24°55°
Arvada, CO Weather by Month and Climate Averages
Arvada, CO gets 17.1 in of precipitation a year over about 86 rainy days, and about 75.5 in of snow a season. July is the warmest month (average high 89°F) and December the coldest (average low 17°F).
Arvada climate at a glance
Humid subtropical climate
Arvada, CO has hot summers and chilly winters. Daytime highs range from about 47°F in December to 89°F in July. May is usually the wettest month, and snow falls in winter. The most comfortable time to visit is typically April and September to October, when daytime highs sit near 69°F.
How much rain does Arvada get?
Arvada gets 17.1 in of precipitation in an average year, spread over about 86 days with measurable rain. That is fewer rainy days than 52% of the US.
May is the wettest month, with 2.6 in. December is the driest, with 0.6 in. May has the most rainy days, about 10.
The longest dry spell in the last five years lasted 25 days, to October 11, 2023.
See where Arvada ranks: rainiest cities in the US, US cities with the most rainy days, rainiest cities in Colorado.
Does it snow in Arvada?
Yes. Arvada gets about 75.5 in of snow in an average season, measured at the reporting station.
The snowiest winter on record is 1972–73, with 95.1 in.
The most recent measurable snow at the station fell on May 6, 2026.
See where Arvada ranks: snowiest cities in the US.
Arvada weather by month
Arvada weather in January
In January, Arvada averages a high of 48°F and a low of 18°F. It gets 0.6 in of precipitation over about 5 rainy days. The sun is out about 55% of daylight hours. The January record high is 78°F (1982) and the record low is -21°F (1984).
Arvada weather in February
In February, Arvada averages a high of 49°F and a low of 19°F. It gets 0.8 in of precipitation over about 6 rainy days. The sun is out about 57% of daylight hours. The February record high is 79°F (2017) and the record low is -23°F (1989).
Arvada weather in March
In March, Arvada averages a high of 57°F and a low of 26°F. It gets 1.5 in of precipitation over about 7 rainy days. The sun is out about 52% of daylight hours. The March record high is 89°F (2026) and the record low is -8°F (2002).
Arvada weather in April
In April, Arvada averages a high of 62°F and a low of 33°F. It gets 2.3 in of precipitation over about 9 rainy days. The sun is out about 55% of daylight hours. The April record high is 92°F (1992) and the record low is 4°F (1997). April is one of the most comfortable months to visit.
Arvada weather in May
In May, Arvada averages a high of 72°F and a low of 43°F. It gets 2.6 in of precipitation over about 10 rainy days. The sun is out about 48% of daylight hours. The May record high is 97°F (2003) and the record low is 19°F (2013).
Arvada weather in June
In June, Arvada averages a high of 83°F and a low of 51°F. It gets 1.7 in of precipitation over about 8 rainy days. The sun is out about 53% of daylight hours. The June record high is 103°F (2012) and the record low is 33°F (1998).
Arvada weather in July
In July, Arvada averages a high of 89°F and a low of 57°F. It gets 1.9 in of precipitation over about 9 rainy days. The sun is out about 59% of daylight hours. The July record high is 104°F (2026) and the record low is 40°F (1987).
Arvada weather in August
In August, Arvada averages a high of 86°F and a low of 54°F. It gets 1.6 in of precipitation over about 8 rainy days. The sun is out about 60% of daylight hours. The August record high is 105°F (2026) and the record low is 37°F (1992).
Arvada weather in September
In September, Arvada averages a high of 79°F and a low of 45°F. It gets 1.3 in of precipitation over about 7 rainy days. The sun is out about 70% of daylight hours. The September record high is 100°F (1990) and the record low is 14°F (1985). September is one of the most comfortable months to visit.
Arvada weather in October
In October, Arvada averages a high of 66°F and a low of 34°F. It gets 1.2 in of precipitation over about 6 rainy days. The sun is out about 69% of daylight hours. The October record high is 94°F (1991) and the record low is 2°F (2020). October is one of the most comfortable months to visit.
Arvada weather in November
In November, Arvada averages a high of 55°F and a low of 24°F. It gets 0.9 in of precipitation over about 6 rainy days. The sun is out about 65% of daylight hours. The November record high is 84°F (1990) and the record low is -8°F (2014).
Arvada weather in December
In December, Arvada averages a high of 47°F and a low of 17°F. It gets 0.6 in of precipitation over about 5 rainy days. The sun is out about 62% of daylight hours. The December record high is 77°F (2025) and the record low is -24°F (1990).
Sunshine, humidity and wind in Arvada
September is the sunniest month in Arvada, with sunshine about 70% of daylight hours. May is the cloudiest, at 48%. Over the year the sun shines about 59% of daylight hours. Arvada is sunnier than 84% of the US.
Humidity peaks in January at 57% and is lowest in September at 37%.
Arvada has about 40 days a year above 90°F. Arvada is hotter than 61% of the US.
Thunderstorms occur on about 49 days a year.
See where Arvada ranks: sunniest cities in the US, cloudiest cities in the US, hottest cities in the US.
First and last freeze in Arvada
The first fall freeze in Arvada typically comes around October 6, and the last spring freeze around May 9. That leaves a frost-free growing season of about 150 days.
Arvada weather records
The hottest temperature on record at the Arvada station is 105°F, on August 3, 2026. The coldest is -24°F, on December 22, 1990.
The wettest day on record brought 3.6 in of rain, on June 3, 1981.
32 all-time records have been set at the station since 1981.
The best time to visit Arvada
The most comfortable time to visit is typically April and September to October, when daytime highs sit near 69°F.
Winter (December–February) is chilly, with average highs around 48°F and lows near 18°F. Snow is possible.
Spring (March–May) is mild, with average highs around 64°F and lows near 34°F.
Summer (June–August) is hot, with average highs around 86°F and lows near 54°F.
Autumn (September–November) is mild, with average highs around 67°F and lows near 34°F.
Monthly climate
| Month | Precip | Rain days | Wind | Humidity | Sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|
| January | 0.64 in | 5 | — | 57% | 55% | 78° | -21° |
| February | 0.78 in | 6 | — | 55% | 57% | 79° | -23° |
| March | 1.5 in | 7 | — | 51% | 52% | 89° | -8° |
| April | 2.3 in | 9 | — | 41% | 55% | 92° | 4° |
| May | 2.6 in | 10 | — | 49% | 48% | 97° | 19° |
| June | 1.7 in | 8 | — | 43% | 53% | 103° | 33° |
| July | 1.9 in | 9 | 0 mph | 41% | 59% | 104° | 40° |
| August | 1.6 in | 8 | 1 mph | 40% | 60% | 105° | 37° |
| September | 1.3 in | 7 | 0 mph | 37% | 70% | 100° | 14° |
| October | 1.2 in | 6 | 1 mph | 39% | 69% | 94° | 2° |
| November | 0.92 in | 6 | 1 mph | 46% | 65% | 84° | -8° |
| December | 0.62 in | 5 | 2 mph | 49% | 62% | 77° | -24° |
From ERA5 reanalysis. Sunshine is estimated from cloud cover.
Arvada climate questions
How much rain does Arvada get?
Arvada gets 17.1 in of precipitation in an average year, over about 86 rainy days.
What is the wettest month in Arvada?
May is the wettest month in Arvada, with 2.6 in. December is the driest, with 0.6 in.
How many rainy days does Arvada have a year?
Arvada has about 86 days with measurable rain in an average year. May has the most, about 10.
Does it snow in Arvada?
Yes. Arvada gets about 75.5 in of snow in an average season. The snowiest winter on record is 1972–73, with 95.1 in.
What is the hottest month in Arvada?
July is the warmest month in Arvada, with an average high of 89°F.
What is the coldest month in Arvada?
December is the coldest month in Arvada, with an average low of 17°F.
What is the record high temperature in Arvada?
The record high at the Arvada station is 105°F, set on August 3, 2026. The record low is -24°F, on December 22, 1990.
What is the sunniest month in Arvada?
September is the sunniest month in Arvada, with sunshine about 70% of daylight hours. May is the cloudiest.
When is the first frost in Arvada?
The first fall freeze in Arvada typically comes around October 6. The last spring freeze is around May 9.
What is the best time to visit Arvada?
The most comfortable time to visit is typically April and September to October, when daytime highs sit near 69°F.
Source: NOAA GHCN-Daily station WHEAT RIDGE 2 (4 km away).
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Climate for places near Arvada, CO
Normals from NOAA GHCN-Daily station WHEAT RIDGE 2.