Pitkin County (Aspen)
September
Weather in Pitkin County for September 2025
Your guide to Pitkin County weather in September - trends and predictions
With an average of 3 snowy days, Pitkin County usually enjoys a light touch of snow in September.
In general, the average temperature in Pitkin County at the beginning of September is 21.9 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 19.9 °F by the end of September.
Pitkin County experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 118.2 mm.
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Snow Forecast ❄️
Temperatures
Rain 🌧️
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19
Dry days
8
Rainy days
3
Snow days
19°/2°
Temperatures
13 km/h
Avg max wind
50 %
Avg humidity
Pitkin County Weather September
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| Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
|---|---|---|---|---|---|---|
| 1  23° | 2  22° | 3 22° | 4 20° | 5  21° | 6  23° | |
| 7 22° | 8 22° | 9 21° | 10 21° | 11 19° | 12  19° | 13 19° |
| 14 21° | 15  18° | 16  19° | 17 12° | 18 15° | 19 20° | 20 21° |
| 21  13° | 22  10° | 23 14° | 24 18° | 25 22° | 26 20° | 27  19° |
| 28 20° | 29 20° | 30 20° |
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Temperatures trend during September in Pitkin County
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Sept. 1 | Patchy rain possible | 23° /3° | 0 mm | 0 cm | |
| Sept. 2 | Patchy light drizzle | 22° /3° | 0.9 mm | 0 cm | |
| Sept. 3 | Patchy rain possible | 22° /3° | 0.1 mm | 0 cm | |
| Sept. 4 | Patchy light drizzle | 20° /3° | 0.7 mm | 0 cm | |
| Sept. 5 | Patchy moderate snow | 21° /0° | 0.5 mm | 0.3 cm | |
| Sept. 6 | Sunny | 23° /1° | 0.2 mm | 0 cm | |
| Sept. 7 | Patchy rain possible | 22° /2° | 0.1 mm | 0 cm | |
| Sept. 8 | Patchy rain possible | 22° /2° | 0.2 mm | 0 cm | |
| Sept. 9 | Patchy rain possible | 21° /2° | 0.7 mm | 0 cm | |
| Sept. 10 | Patchy rain possible | 21° /2° | 1.5 mm | 0 cm | |
| Sept. 11 | Patchy light drizzle | 19° /2° | 1.4 mm | 0 cm | |
| Sept. 12 | Partly cloudy | 19° /1° | 0 mm | 0 cm | |
| Sept. 13 | Sunny | 19° /0° | 0 mm | 0 cm | |
| Sept. 14 | Sunny | 21° /0° | 0 mm | 0 cm | |
| Sept. 15 | Moderate or heavy rain with thunder | 18° /1° | 7.7 mm | 0 cm | |
| Sept. 16 | Patchy light rain with thunder | 19° /1° | 1.6 mm | 0.1 cm | |
| Sept. 17 | Moderate or heavy rain with thunder | 12° /4° | 34.5 mm | 0 cm | |
| Sept. 18 | Sunny | 15° /2° | 0 mm | 0 cm | |
| Sept. 19 | Sunny | 20° /0° | 0 mm | 0 cm | |
| Sept. 20 | Sunny | 21° /4° | 0 mm | 0 cm | |
| Sept. 21 | Thundery outbreaks possible | 13° /-1° | 46.5 mm | 0 cm | |
| Sept. 22 | Mist | 10° /5° | 21.7 mm | 0 cm | |
| Sept. 23 | Thundery outbreaks possible | 14° /-6° | 0 mm | 0 cm | |
| Sept. 24 | Sunny | 18° /3° | 0 mm | 0 cm | |
| Sept. 25 | Sunny | 22° /2° | 0 mm | 0 cm | |
| Sept. 26 | Sunny | 20° /5° | 0 mm | 0 cm | |
| Sept. 27 | Cloudy | 19° /6° | 0 mm | 0 cm | |
| Sept. 28 | Thundery outbreaks possible | 20° /5° | 0 mm | 0 cm | |
| Sept. 29 | Sunny | 20° /5° | 0 mm | 0 cm | |
| Sept. 30 | Sunny | 20° /5° | 0 mm | 0 cm | |
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Important Notice
Our weather forecast for Pitkin County in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Pitkin County forecast closer to your planned date for the most up-to-date weather information.
Pitkin County in September - FAQ
What are the expected maximum and minimum temperatures in Pitkin County during September?
During September, expect a variety of temperatures with highs around 19° and lows near 2°, suitable for diverse activities and preferences.
How much rainfall should be expected in Pitkin County during September?
Significant rainfall exceeding 118.2 mm is expected in Pitkin County during September, occurring over more than 8 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Pitkin County in September 2025?
Pitkin County experiences an average snowfall of 0.4 cm during September, occurring over 3 days.
What are the typical wind conditions in Pitkin County during September?
The average wind speed in Pitkin County during September is 13 km/h, suggesting breezy to windy conditions, depending on your activities.
Pitkin County snow forecast September 2025
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September rainfall patterns in Pitkin County
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UV exposure in Pitkin County during September
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Where is Pitkin County?Get accurate weather forecasts for Pitkin County, located at latitude 39.191 and longitude -106.818. Stay updated with localized weather information tailored for Pitkin County.
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