Steamboat Springs, CO weather in September
In September, Steamboat Springs sees highs around 74°F and lows around 36°F: mild, with some rain. There are about 10 days with rain. Great for outdoor plans.
- Normal high
- 74°F
- Normal low
- 36°F
- Wet days
- 10
- 2.3 in total
- Muggy days
- 0
- dew point 65°F+
How September changes from start to finish
| September 1 | September 30 | |
|---|---|---|
| Normal high | 78°F | 68°F |
| Normal low | 40°F | 31°F |
| Chance of a wet day | 35% | 30% |
| Sunrise / sunset | 6:34 am / 7:39 pm | 7:02 am / 6:51 pm |
| Daylight | 13.1 h | 11.8 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Mountain Time).
A typical September day
- 6 am40°Fdew point 34°F
- 9 am58°Fdew point 38°F
- Noon71°Fdew point 34°F
- 3 pm73°Fdew point 32°F
- 6 pm65°Fdew point 34°F
- 9 pm52°Fdew point 36°F
NOAA hourly normals (local standard time) from Craig Moffat Co Airport (36 mi away); average wind 5 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F19 of 30
- Hot dayshigh 90°F or more0 of 30
- Muggy daysdaily mean dew point 65°F or more0 of 30
- Wet daysat least 0.01 in of rain or melted snow10 of 30
- Notable rainat least 0.10 in6 of 30
- Freezing nightslow 32°F or below11 of 30
- Snow on the groundsnow depth 1 in or more0 of 30
Average days per September, counted from daily records for each year 1991-2020.
Rain and snow in September
Normal precipitation is 2.3 in; a dry September brings about 1.3 in and a wet one about 2.9 in (25th and 75th percentiles). About 1 day brings half an inch or more. Normal snowfall is 0.4 in.
How September varies from year to year
- Warmest September, 1991-20201998: average high 80°F
- Coolest September2006: average high 66°F
- Wettest September1997: 6.5 in
- Driest September2020: 0.3 in
- Highest reading92°F (September 6, 2020)
- Lowest reading16°F (September 30, 1999)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
September compared with August and October
| August | September | October | |
|---|---|---|---|
| Normal high | 82°F | 74°F | 59°F |
| Normal low | 44°F | 36°F | 26°F |
| Wet days | 12 | 10 | 9 |
| Comfortable days | 12 | 19 | 12 |
| Daylight | 13.7 h | 12.4 h | 11.1 h |
Highs change by -8°F from August and -15°F into October.
Nearby alternatives in September
- Warmer: Boulder, CO88 mi · high 79°F · 8 wet days
- Drier: Thornton, CO107 mi · high 80°F · 6 wet days
- Cooler: Vail, CO63 mi · high 67°F · 9 wet days
How Steamboat Springs ranks in September
- Normal high310th warmest of 378 cities; 12th of 17 in Colorado
- Wet days283rd driest of 378
- Comfortable days20th most of 342
What to pack for Steamboat Springs in September
- A warm jacket – lows near 36°F, highs near 74°F
- Layers – afternoons near 74°F but nights near 36°F
- A rain jacket or umbrella – rain on about 10 days
Frost in September
The first fall frost typically comes around Sep 12; in 1 year in 10 it comes before Aug 31. All frost dates for Steamboat Springs.
Heating and cooling
September has 313 heating degree days and 1 cooling degree days (base 65°F), 4% of the year's total heating and cooling demand.
Questions
How hot is Steamboat Springs in September?
The normal high is 74°F and the normal low is 36°F. From 1991 to 2020 the hottest September reading was 92°F (September 6, 2020).
Does it rain a lot in Steamboat Springs in September?
About 10 days in September have at least 0.01 in of precipitation, and the normal total is 2.3 in. The wettest September in 1991-2020 was in 1997 (6.5 in); the driest was in 2020 (0.3 in).
Does it snow in Steamboat Springs in September?
Yes. Normal snowfall in September is 0.4 in.
Is September a good time to visit Steamboat Springs?
September ranks 2nd of 12 months on our comfort score for Steamboat Springs (75 out of 100). It has about 19 comfortable days. The best month is June.
Where the numbers come from
- Temperature, rain, snowfall, snow depth and frost dates: Steamboat Springs (USC00057936), 0.5 mi ENE of the city center, 6,866 ft (135 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour: Craig Moffat Co Airport (USW00024046), 36 mi W of the city center, 6,186 ft (545 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Eagle Co Regional Airport (724675-23063), 58 mi S of the city center, 6,497 ft (234 ft lower than the city). Hourly observations, 1991-2020.
- Not available for this location: cloud cover (no station close enough or similar enough in elevation).