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Chaffee County (Buena Vista)
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Weather in Chaffee County, Colorado for September 2026

Your guide to Chaffee County weather in September - trends and predictions

    Snow Forecast ❄️

  • Snowfall in Chaffee County during September is quite rare, with fewer than 2 snowy days on average.
    According to Chaffee County snow forecast for September 2026, 1 snowy day is expected until the end of the month at Wednesday, September 30.

    • Temperatures

  • Until now, September 2026 in Chaffee County has been nearly identical to the historical average, with a temperature of 19.3 °F (showing only a slight deviation of 0.5 °F).

  • The forecast for the coming days of September 2026 predicts a temperature of 14.9 °F , which is warmer than usual.

  • In general, the average temperature in Chaffee County at the beginning of September is 19.6 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 12.9 °F by the end of September.

    • Rain 🌧️

  • Chaffee County experiences moderate rainfall in September, with an average of 9 rainy days and a total precipitation of 133.9 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
21
Dry days
Average rainy days
9
Rainy days
Average snowy days
0
Snow days
Average temperatures
18°/1°
Temperatures
Average wind speed
14 km/h
Avg max wind
Average humidity
59 %
Avg humidity

Chaffee County Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Partly cloudy
20°
2
Overcast
19°
3
Cloudy
20°
4
Partly cloudy
21°
5
Moderate or heavy rain shower
19°
6
Light rain shower
20°
7
Thundery outbreaks possible
18°
8
Thundery outbreaks possible
20°
9
Thundery outbreaks possible
23°
10
Thundery outbreaks possible
22°
11
Light rain shower
21°
12
Thundery outbreaks possible
20°
13
Light rain shower
19°
14
Cloudy
18°
15
Sunny
20°
16
Thundery outbreaks possible
20°
17
Sunny
18°
18
Thundery outbreaks possible
17°
19
Overcast
19°
20
Light rain shower
17°
21
Sunny
19°
22
Thundery outbreaks possible
17°
23
Cloudy
14°
24
Overcast
12°
25
Sunny
17°
26
Sunny
16°
27
Overcast
16°
28
Overcast
10°
29
Light rain shower
9°
30
Patchy rain possible
10°

Temperatures trend during September in Chaffee County

See the weather trend as well as the moving average line

September weather in Chaffee County day by day

Click on a date for more information
August October
Date Weather Temperatures Rain Snow More
Sept. 1 Partly cloudy
Partly cloudy
 20° /3° 0.1 mm 0 cm
Sept. 2 Overcast
Overcast
 19° /4° 0 mm 0 cm
Sept. 3 Cloudy
Cloudy
 20° /3° 0 mm 0 cm
Sept. 4 Partly cloudy
Partly cloudy
 21° /4° 0.1 mm 0 cm
Sept. 5 Moderate or heavy rain shower
Moderate or heavy rain shower
 19° /5° 9.8 mm 0 cm
Sept. 6 Light rain shower
Light rain shower
 20° /4° 14 mm 0 cm
Sept. 7 Thundery outbreaks possible
Thundery outbreaks possible
 18° /4° 0 mm 0 cm
Sept. 8 Thundery outbreaks possible
Thundery outbreaks possible
 20° /4° 0 mm 0 cm
Sept. 9 Thundery outbreaks possible
Thundery outbreaks possible
 23° /5° 0 mm 0 cm
Sept. 10 Thundery outbreaks possible
Thundery outbreaks possible
 22° /4° 0 mm 0 cm
Sept. 11 Light rain shower
Light rain shower
 21° /5° 9.1 mm 0 cm
Sept. 12 Thundery outbreaks possible
Thundery outbreaks possible
 20° /7° 4.9 mm 0 cm
Sept. 13 Light rain shower
Light rain shower
 19° /4° 11.1 mm 0 cm
Sept. 14 Cloudy
Cloudy
 18° /5° 4.4 mm 0 cm
Sept. 15 Sunny
Sunny
 20° /3° 1.1 mm 0 cm
Sept. 16 Thundery outbreaks possible
Thundery outbreaks possible
 20° /4° 0.8 mm 0 cm
Sept. 17 Sunny
Sunny
 18° /4° 7.9 mm 0 cm
Sept. 18 Thundery outbreaks possible
Thundery outbreaks possible
 17° /3° 2.3 mm 0 cm
Sept. 19 Overcast
Overcast
 19° /2° 0.5 mm 0 cm
Sept. 20 Light rain shower
Light rain shower
 17° /2° 2.7 mm 0 cm
Sept. 21 Sunny
Sunny
 19° /0° 0 mm 0 cm
Sept. 22 Thundery outbreaks possible
Thundery outbreaks possible
 17° /2° 0.9 mm 0 cm
Sept. 23 Cloudy
Cloudy
 14° /2° 2.1 mm 0 cm
Sept. 24 Overcast
Overcast
 12° /3° 5.6 mm 0 cm
Sept. 25 Sunny
Sunny
 17° /2° 4 mm 0 cm
Sept. 26 Sunny
Sunny
 16° /3° 0 mm 0 cm
Sept. 27 Overcast
Overcast
 16° /5° 0.4 mm 0 cm
Sept. 28 Overcast
Overcast
 10° /5° 0.5 mm 0 cm
Sept. 29 Light rain shower
Light rain shower
 9° /5° 4.4 mm 0 cm
Sept. 30 Patchy rain possible
Patchy rain possible
 10° /3° 1.5 mm 0.2 cm
Next
Important Notice
Our weather forecast for Chaffee 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 Chaffee County forecast closer to your planned date for the most up-to-date weather information.
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Chaffee County in September - FAQ

What are the expected maximum and minimum temperatures in Chaffee County during September?
During September, expect a variety of temperatures with highs around 18° and lows near 1°, suitable for diverse activities and preferences.

How much rainfall should be expected in Chaffee County during September?
Significant rainfall exceeding 133.9 mm is expected in Chaffee County during September, occurring over more than 9 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Chaffee County during September?
The average wind speed in Chaffee County during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.

Chaffee County snow forecast September 2026

Track daily snowfall levels and discover Chaffee County’s snowy potential this September ❄️

September rainfall patterns in Chaffee County

Explore the daily rainfall trends and prepare for Chaffee Countys September weather 💧
Typically, Chaffee County has 9 rainy days in September with a total of 133.9 mm of rainfall.

UV exposure in Chaffee County during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Buena Vista
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Location coordinates Where is Chaffee County?

Get accurate weather forecasts for Chaffee County, located at latitude 38.842 and longitude -106.131. Stay updated with localized weather information tailored for Chaffee County.

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