Temperature
Cool by day, freezing at night.
Arvada is usually most comfortable in June, August, and September. Typical daytime highs range from 44–89°F across the year. Most months see little rain.

Cool by day, freezing at night.
Some precipitation is expected this month.
Plenty of sun this month.
Humidity is rarely noticeable in the cool air.
In November, afternoons feel about 41° and nights feel near 23°.
Mostly clear skies this month.
Calm winds are typical in November.
November late afternoons are around 47°F, easing to about 38°F in early evening.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 44 | 20 | 0.9 | 5 | 8.5 | 61 |
| Feb | 47 | 21 | 1.0 | 6 | 9.3 | 59 |
| Mar | 56 | 28 | 1.9 | 8 | 10.5 | 54 |
| Apr | 64 | 35 | 2.6 | 10 | 11.0 | 53 |
| May | 71 | 44 | 3.4 | 13 | 12.1 | 57 |
| Jun | 83 | 54 | 1.9 | 9 | 12.9 | 52 |
| Jul | 89 | 60 | 1.5 | 8 | 13.0 | 50 |
| Aug | 86 | 59 | 1.5 | 7 | 12.4 | 51 |
| Sep | 80 | 51 | 1.4 | 6 | 11.1 | 50 |
| Oct | 67 | 40 | 1.5 | 6 | 9.7 | 53 |
| Nov | 55 | 29 | 1.0 | 5 | 8.6 | 56 |
| Dec | 45 | 21 | 0.9 | 5 | 8.1 | 59 |
Similar climates
Want a side-by-side climate view? Compare Arvada with Alturas.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jul 31, 2026
Data & methodology