Climate averages 1991–2020
Centennial weather
in October.
A mild, moderately wet month: the 6th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a mild month in Centennial: daytime highs average 16.5°C and nights cool to about 1.8°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 42 mm of rain on roughly 6 days, which makes October a moderately wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 12 min on an average October day.
The nearest other city in this atlas is Highlands Ranch (8 km away). In October its highs average 16.5°C, about as warm as Centennial, with 42 mm of rain.
Among the 498 cities listed in the United States, Centennial ranks joint 385th of 498 for the warmest October highs and joint 153rd of 498 for the driest October (rainfall, lowest first). The mean October high of those 498 cities is 21.4°C; Centennial is 4.9°C cooler than that mean.
From October to November, average highs fall by 7.3°C to 9.2°C, and monthly rainfall falls from 42 mm to 31 mm.
The annual picture
October 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
Centennial climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 4.3°C-10.1°C | -10.1°C | 22 | 5.3 | 9.710 h |
| February | 5.6°C-9.2°C | -9.2°C | 24 | 5.7 | 10.711 h |
| March | 10.2°C-5.2°C | -5.2°C | 51 | 7.8 | 11.912 h |
| April | 13.7°C-1.2°C | -1.2°C | 75 | 10.0 | 13.213 h |
| May | 19.2°C4.8°C | 4.8°C | 88 | 12.5 | 14.314 h |
| June | 25.8°C10.5°C | 10.5°C | 57 | 9.6 | 14.915 h |
| July | 28.9°C14.1°C | 14.1°C | 56 | 9.7 | 14.715 h |
| August | 27.7°C13.4°C | 13.4°C | 47 | 9.3 | 13.714 h |
| September | 23.8°C9.1°C | 9.1°C | 39 | 6.3 | 12.512 h |
| October, selected | 16.5°C1.8°C | 1.8°C | 42 | 6.3 | 11.211 h |
| November | 9.2°C-5.4°C | -5.4°C | 31 | 5.9 | 10.010 h |
| December | 3.9°C-10.3°C | -10.3°C | 22 | 4.9 | 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
October in nearby cities
- Highlands Ranch in OctoberUnited States · 8 kmHigh 16.5°C · Low 1.8°C · 42 mm rain
- Aurora (Colorado), United States in OctoberUnited States · 17 kmHigh 17.6°C · Low 3.6°C · 30 mm rain
- Denver in OctoberUnited States · 20 kmHigh 17.0°C · Low 2.4°C · 40 mm rain
- Lakewood in OctoberUnited States · 22 kmHigh 16.9°C · Low 2.6°C · 40 mm rain
- Arvada in OctoberUnited States · 31 kmHigh 16.9°C · Low 2.5°C · 40 mm rain
- Westminster (Colorado), United States in OctoberUnited States · 32 kmHigh 16.8°C · Low 2.3°C · 40 mm rain
- Thornton in OctoberUnited States · 33 kmHigh 16.6°C · Low 2.3°C · 40 mm rain
- Boulder in OctoberUnited States · 59 kmHigh 16.5°C · Low 3.1°C · 48 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 Centennial) is explained once on the Centennial year overview and on the Sources, method and limits page.
Highlands Ranch lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.