Climate averages 1991–2020
Boulder weather
in November.
A cool, fairly dry month: the 9th warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
November is a cool month in Boulder: daytime highs average 9.1°C and nights cool to about -3.9°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 32 mm of rain on roughly 6 days, which makes November a fairly dry month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 01 min on an average November day.
The nearest other city in this atlas is Longmont (22 km away). In November its highs average 9.4°C, about as warm as Boulder, with 28 mm of rain.
Among the 498 cities listed in the United States, Boulder ranks joint 410th of 498 for the warmest November highs and joint 110th of 498 for the driest November (rainfall, lowest first). The mean November high of those 498 cities is 15.2°C; Boulder is 6.1°C cooler than that mean.
From November to December, average highs fall by 5.1°C to 4.0°C, and monthly rainfall falls from 32 mm to 23 mm.
The annual picture
November in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Boulder climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 4.2°C-8.7°C | -8.7°C | 24 | 5.7 | 9.710 h |
| February | 5.4°C-8.3°C | -8.3°C | 26 | 6.7 | 10.711 h |
| March | 10.0°C-4.5°C | -4.5°C | 50 | 8.8 | 11.912 h |
| April | 13.7°C-0.4°C | -0.4°C | 78 | 11.1 | 13.213 h |
| May | 19.2°C5.1°C | 5.1°C | 103 | 14.9 | 14.414 h |
| June | 25.6°C10.8°C | 10.8°C | 77 | 14.2 | 15.015 h |
| July | 28.7°C14.4°C | 14.4°C | 75 | 14.8 | 14.715 h |
| August | 27.5°C13.7°C | 13.7°C | 71 | 14.8 | 13.814 h |
| September | 23.7°C9.5°C | 9.5°C | 54 | 9.6 | 12.512 h |
| October | 16.5°C3.1°C | 3.1°C | 48 | 7.4 | 11.211 h |
| November, selected | 9.1°C-3.9°C | -3.9°C | 32 | 6.4 | 10.010 h |
| December | 4.0°C-8.8°C | -8.8°C | 23 | 5.3 | 9.49 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
November in nearby cities
- Longmont in NovemberUnited States · 22 kmHigh 9.4°C · Low -3.6°C · 28 mm rain
- Westminster (Colorado), United States in NovemberUnited States · 28 kmHigh 9.5°C · Low -5.0°C · 30 mm rain
- Arvada in NovemberUnited States · 28 kmHigh 9.6°C · Low -4.8°C · 30 mm rain
- Thornton in NovemberUnited States · 30 kmHigh 9.4°C · Low -4.9°C · 30 mm rain
- Lakewood in NovemberUnited States · 38 kmHigh 9.6°C · Low -4.4°C · 30 mm rain
- Denver in NovemberUnited States · 39 kmHigh 9.6°C · Low -4.8°C · 30 mm rain
- Loveland in NovemberUnited States · 46 kmHigh 9.3°C · Low -3.9°C · 26 mm rain
- Aurora (Colorado), United States in NovemberUnited States · 49 kmHigh 10.4°C · Low -3.4°C · 20 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Boulder) is explained once on the Boulder year overview and on the Sources, method and limits page.