Centennial weather in September: Centennial, Colorado: normal highs, lows, rain and records for September
Centennial in September has a normal high of 77°F and a normal low of 49°F, a daily mean of 63°F, falling from 82°F on the 1st to 71°F by the 30th. Measurable precipitation falls on 6 days in a normal September, 1.29 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 25°C and low of 9°C, 33 mm of precipitation in September.
- NOAA stationDenver Centennial Airport
- Station IDUSW00093067
- Location39.57°N 104.85°W
- Elevation5,883 ft (1,793 m)
- From the center2 miles
- Population108,853
- Jan 45° 19°
- Feb 46° 20°
- Mar 54° 27°
- Apr 60° 34°
- May 69° 43°
- Jun 81° 52°
- Jul 87° 59°
- Aug 85° 57°
- Sep 77° 49°
- Oct 64° 36°
- Nov 52° 26°
- Dec 44° 19°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Centennial in September?
The normal high is 77°F and the normal low 49°F, for a daily mean of 62.8°F. September is 8.0°F cooler than August and 12.8°F warmer than October. September is the 4th warmest month of the year in Centennial and the 6th wettest. Across the month the normal high falls 11°F, from 82°F on September 1 to 71°F on September 30. From one year to the next September's mean temperature typically moves about 2.9°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 60°F and 66°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 25%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 82°F | 54°F | 25% | 11% |
| September 8 | 80°F | 52°F | 23% | 10% |
| September 15 | 78°F | 49°F | 22% | 10% |
| September 22 | 75°F | 46°F | 21% | 10% |
| September 30 | 71°F | 43°F | 20% | 10% |
Every day of September: normal high, low and chance of precipitation (warmest afternoon September 1, coldest night September 30)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| September 1 | 82°F | 54°F | 25% | 11% | 13 h 10 min |
| September 2 | 82°F | 54°F | 25% | 10% | 13 h |
| September 3 | 82°F | 53°F | 24% | 10% | 13 h |
| September 4 | 81°F | 53°F | 24% | 10% | 13 h |
| September 5 | 81°F | 53°F | 24% | 10% | 13 h |
| September 6 | 81°F | 52°F | 24% | 10% | 12 h 50 min |
| September 7 | 80°F | 52°F | 23% | 10% | 12 h 50 min |
| September 8 | 80°F | 52°F | 23% | 10% | 12 h 50 min |
| September 9 | 80°F | 51°F | 23% | 10% | 12 h 50 min |
| September 10 | 80°F | 51°F | 23% | 10% | 12 h 40 min |
| September 11 | 79°F | 51°F | 23% | 10% | 12 h 40 min |
| September 12 | 79°F | 50°F | 22% | 10% | 12 h 40 min |
| September 13 | 79°F | 50°F | 22% | 10% | 12 h 40 min |
| September 14 | 78°F | 50°F | 22% | 10% | 12 h 30 min |
| September 15 | 78°F | 49°F | 22% | 10% | 12 h 30 min |
| September 16 | 77°F | 49°F | 22% | 10% | 12 h 30 min |
| September 17 | 77°F | 48°F | 21% | 10% | 12 h 30 min |
| September 18 | 77°F | 48°F | 21% | 10% | 12 h 20 min |
| September 19 | 76°F | 47°F | 21% | 10% | 12 h 20 min |
| September 20 | 76°F | 47°F | 21% | 10% | 12 h 20 min |
| September 21 | 75°F | 47°F | 21% | 10% | 12 h 20 min |
| September 22 | 75°F | 46°F | 21% | 10% | 12 h 10 min |
| September 23 | 74°F | 46°F | 21% | 10% | 12 h 10 min |
| September 24 | 74°F | 45°F | 20% | 10% | 12 h 10 min |
| September 25 | 73°F | 45°F | 20% | 10% | 12 h 10 min |
| September 26 | 73°F | 44°F | 20% | 10% | 12 h |
| September 27 | 72°F | 44°F | 20% | 10% | 12 h |
| September 28 | 72°F | 43°F | 20% | 10% | 12 h |
| September 29 | 71°F | 43°F | 20% | 10% | 11 h 50 min |
| September 30 | 71°F | 43°F | 20% | 10% | 11 h 50 min |
- Normal high
- 77°FSeptember average
- Normal low
- 49°FSeptember average
- Precipitation
- 1.29 inmonth total
- Days with precipitation
- 60.01 inch or more
- Days at 90°F or more
- 2
- Nights at 32°F or colder
- 1
- Daylight
- 13 h 10 min to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 25
- Days at 80°F or more
- 16
- Sunshine
- 85%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00093067; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Centennial in September?
On a given September day the chance of 0.01 inch or more is 22% on average, highest around September 1 (25%). In all, 1.29 in falls on 6 days of a normal September.
In a normal September in Centennial, 2 days reach 90°F and 1 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00093067.
How humid and windy is Centennial in September?
At 3 p.m. the normal temperature is 69°F with 26% relative humidity and a dew point of 33°F; at 6 a.m. it is 47°F with 61% humidity. The wind averages 7.7 mph, most often from the north in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 47°F | 34°F | 61% | 6.2 mph | – |
| 9 a.m. | 59°F | 35°F | 40% | 7.3 mph | 54% |
| noon | 67°F | 33°F | 28% | 8.4 mph | – |
| 3 p.m. | 69°F | 33°F | 26% | 10.0 mph | – |
| 6 p.m. | 61°F | 35°F | 37% | 8.2 mph | – |
| 9 p.m. | 54°F | 36°F | 50% | 7.8 mph | 56% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00093067. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for September in Centennial?
The warmest September temperature on this station's record (since 1998) is 98°F, on September 2, 2019; the coldest is 26°F, on September 29, 1999. The wettest September brought 7.00 in (2013).
The September mean against the 1991-2020 normal of 62.8°F: 2021 66.3°F (+3.5), 2022 66.3°F (+3.5), 2023 65.7°F (+2.9), 2024 67.8°F (+5.0), 2025 64.5°F (+1.7), 2026 67.7°F (+4.9). 6 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 66.3°F | +3.5°F | 1.96 in |
| 2022 | 66.3°F | +3.5°F | 1.44 in |
| 2023 | 65.7°F | +2.9°F | 1.14 in |
| 2024 | 67.8°F | +5.0°F | 1.13 in |
| 2025 | 64.5°F | +1.7°F | 1.58 in |
| 2026 | 67.7°F | +4.9°F | 3.23 in |
Source: records: ACIS, station USW00093067; recent months: ACIS, station USW00093067. Records and recent months use complete months only.
How does September in Centennial compare across Colorado?
Across the 125 places PlainClimate covers in Colorado, September normal highs run from 62°F in Leadville to 86°F in Lamar; Centennial's is 77°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.