Climate averages 1991–2020
Longmont 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 Longmont: daytime highs average 9.4°C and nights cool to about -3.6°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 28 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 00 min on an average November day.
The nearest other city in this atlas is Boulder (22 km away). In November its highs average 9.1°C, about as warm as Longmont, with 32 mm of rain.
Among the 498 cities listed in the United States, Longmont ranks joint 396th of 498 for the warmest November highs and joint 90th of 498 for the driest November (rainfall, lowest first). The mean November high of those 498 cities is 15.2°C; Longmont is 5.8°C cooler than that mean.
From November to December, average highs fall by 5.2°C to 4.2°C, and monthly rainfall falls from 28 mm to 18 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
Longmont climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 4.5°C-8.4°C | -8.4°C | 19 | 4.7 | 9.710 h |
| February | 5.9°C-7.6°C | -7.6°C | 20 | 5.3 | 10.611 h |
| March | 11.0°C-3.9°C | -3.9°C | 42 | 7.3 | 11.912 h |
| April | 14.8°C0.4°C | 0.4°C | 67 | 9.5 | 13.213 h |
| May | 19.9°C5.9°C | 5.9°C | 87 | 11.7 | 14.414 h |
| June | 26.0°C11.4°C | 11.4°C | 53 | 8.4 | 15.015 h |
| July | 29.5°C15.0°C | 15.0°C | 42 | 7.3 | 14.715 h |
| August | 28.3°C14.3°C | 14.3°C | 39 | 6.7 | 13.814 h |
| September | 24.2°C9.9°C | 9.9°C | 39 | 5.9 | 12.512 h |
| October | 16.8°C3.2°C | 3.2°C | 41 | 6.5 | 11.211 h |
| November, selected | 9.4°C-3.6°C | -3.6°C | 28 | 5.8 | 10.010 h |
| December | 4.2°C-8.1°C | -8.1°C | 18 | 4.5 | 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
- Boulder in NovemberUnited States · 22 kmHigh 9.1°C · Low -3.9°C · 32 mm rain
- Loveland in NovemberUnited States · 26 kmHigh 9.3°C · Low -3.9°C · 26 mm rain
- Thornton in NovemberUnited States · 35 kmHigh 9.4°C · Low -4.9°C · 30 mm rain
- Westminster (Colorado), United States in NovemberUnited States · 37 kmHigh 9.5°C · Low -5.0°C · 30 mm rain
- Arvada in NovemberUnited States · 41 kmHigh 9.6°C · Low -4.8°C · 30 mm rain
- Greeley in NovemberUnited States · 44 kmHigh 10.4°C · Low -2.7°C · 16 mm rain
- Fort Collins in NovemberUnited States · 47 kmHigh 9.1°C · Low -3.7°C · 26 mm rain
- Denver in NovemberUnited States · 49 kmHigh 9.6°C · Low -4.8°C · 30 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 Longmont) is explained once on the Longmont year overview and on the Sources, method and limits page.