Arvada, CO weather in October
Arvada is mild in October, with some rain and some snow: highs average 66°F and nights drop to about 34°F. There are about 6 days with rain or snow. Snowfall averages about 5.9 in. A good month for most outdoor plans.
- Normal high
- 66°F
- Normal low
- 34°F
- Wet days
- 6
- 1.2 in total
- Snowfall
- 5.9 in
- snow on the ground 2 days
How October changes from start to finish
| October 1 | October 31 | |
|---|---|---|
| Normal high | 72°F | 61°F |
| Normal low | 39°F | 29°F |
| Chance of a wet day | 20% | 20% |
| Sunrise / sunset | 6:56 am / 6:43 pm | 7:28 am / 5:59 pm |
| Daylight | 11.8 h | 10.5 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Mountain Time).
A typical October day
- 6 am41°Fdew point 28°F
- 9 am52°Fdew point 29°F
- Noon61°Fdew point 27°F
- 3 pm62°Fdew point 27°F
- 6 pm53°Fdew point 29°F
- 9 pm47°Fdew point 30°F
NOAA hourly normals (local standard time) from Aurora Buckley Fld ANGB (19 mi away); average wind 8 mph; clear or few clouds in 46% of daytime hours, mostly cloudy or overcast in 38%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F14 of 31
- Hot dayshigh 90°F or more0 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow6 of 31
- Notable rainat least 0.10 in3 of 31
- Freezing nightslow 32°F or below13 of 31
- Snow on the groundsnow depth 1 in or more2 of 31
Average days per October, counted from daily records for each year 1991-2020.
Rain and snow in October
Normal precipitation is 1.2 in; a dry October brings about 0.7 in and a wet one about 1.6 in (25th and 75th percentiles). About 1 day brings half an inch or more. Normal snowfall is 5.9 in, with about 1 day of an inch or more.
How October varies from year to year
- Warmest October, 1991-20202016: average high 74°F
- Coolest October2009: average high 56°F
- Wettest October1997: 2.9 in
- Driest October2003: 0.1 in
- Highest reading94°F (October 16, 1991)
- Lowest reading2°F (October 27, 2020)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
October compared with September and November
| September | October | November | |
|---|---|---|---|
| Normal high | 79°F | 66°F | 55°F |
| Normal low | 45°F | 34°F | 24°F |
| Wet days | 7 | 6 | 6 |
| Comfortable days | 11 | 14 | 9 |
| Daylight | 12.4 h | 11.1 h | 10.0 h |
Highs change by -13°F from September and -11°F into November.
Nearby alternatives in October
- Cooler: Estes Park, CO46 mi · high 57°F · 7 wet days
How Arvada ranks in October
- Normal high232nd warmest of 378 cities; 5th of 17 in Colorado
- Wet days106th driest of 378
- Comfortable days106th most of 340
What to pack for Arvada in October
- A warm jacket – lows near 34°F, highs near 66°F
- Layers – afternoons near 66°F but nights near 34°F
- Waterproof boots – about 5.9 in of snow in a typical year
Frost in October
The first fall frost typically comes around Oct 5; in 1 year in 10 it comes before Sep 20. All frost dates for Arvada.
Heating and cooling
October has 472 heating degree days and 1 cooling degree days (base 65°F), 7% of the year's total heating and cooling demand.
Questions
How cold is Arvada in October?
The normal high is 66°F and the normal low is 34°F. From 1991 to 2020 the coldest October reading was 2°F (most recently on October 27, 2020).
Does it rain a lot in Arvada in October?
About 6 days in October have at least 0.01 in of precipitation, and the normal total is 1.2 in. The wettest October in 1991-2020 was in 1997 (2.9 in); the driest was in 2003 (0.2 in).
Does it snow in Arvada in October?
Yes. Normal snowfall in October is 5.9 in, and snow covers the ground on about 2 days.
Is October a good time to visit Arvada?
October ranks 3rd of 12 months on our comfort score for Arvada (65 out of 100). It has about 14 comfortable days. The best month is May.
Where the numbers come from
- Temperature, rain, snowfall, snow depth and frost dates: Wheat Ridge 2 (USC00058995), 2.5 mi SW of the city center, 5,398 ft . NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour and cloud cover: Aurora Buckley Fld ANGB (USW00023036), 19 mi ESE of the city center, 5,663 ft (314 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Buckley Air Force Base (724695-23036), 19 mi ESE of the city center, 5,663 ft (314 ft higher than the city). Hourly observations, 1991-2020.