Aspen, CO weather in August
August in Aspen: mild, with frequent rain. Highs 73°F, lows 47°F, about 13 wet days. This is the peak of the warm season in Aspen.
- Normal high
- 73°F
- Normal low
- 47°F
- Wet days
- 13
- 1.8 in total
- Muggy days
- 0
- dew point 65°F+
How August changes from start to finish
| August 1 | August 31 | |
|---|---|---|
| Normal high | 75°F | 71°F |
| Normal low | 49°F | 44°F |
| Chance of a wet day | 41% | 38% |
| Sunrise / sunset | 6:07 am / 8:19 pm | 6:35 am / 7:40 pm |
| Daylight | 14.2 h | 13.1 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Mountain Time).
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F25 of 31
- Hot dayshigh 90°F or more0 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow13 of 31
- Notable rainat least 0.10 in6 of 31
- Freezing nightslow 32°F or below0 of 31
- Snow on the groundsnow depth 1 in or more0 of 31
Average days per August, counted from daily records for each year 1991-2020.
Rain in August
Normal precipitation is 1.8 in; a dry August brings about 1.1 in and a wet one about 2.0 in (25th and 75th percentiles). Days with half an inch or more are rare.
How August varies from year to year
- Warmest August, 1991-20202020: average high 80°F
- Coolest August2014: average high 70°F
- Wettest August2010: 4.9 in
- Driest August1996: 0.6 in
- Highest reading88°F (August 17, 2002)
- Lowest reading29°F (August 25, 1992)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
August compared with July and September
| July | August | September | |
|---|---|---|---|
| Normal high | 76°F | 73°F | 67°F |
| Normal low | 48°F | 47°F | 40°F |
| Wet days | 11 | 13 | 10 |
| Comfortable days | 21 | 25 | 22 |
| Daylight | 14.6 h | 13.7 h | 12.4 h |
Highs change by -3°F from July and -6°F into September.
Nearby alternatives in August
- Warmer: Steamboat Springs, CO89 mi · high 82°F · 12 wet days
- Drier: Lakewood, CO99 mi · high 84°F · 8 wet days
- Cooler: Breckenridge, CO46 mi · high 68°F · 14 wet days
How Aspen ranks in August
- Normal high362nd warmest of 378 cities; 16th of 17 in Colorado
- Wet days327th driest of 378
- Comfortable days6th most of 341
What to pack for Aspen in August
- Layers – afternoons near 73°F but nights near 47°F
- A rain jacket or umbrella – rain on about 13 days
Heating and cooling
August has 157 heating degree days and 5 cooling degree days (base 65°F), 2% of the year's total heating and cooling demand.
Questions
How hot is Aspen in August?
The normal high is 73°F and the normal low is 47°F. From 1991 to 2020 the hottest August reading was 88°F (August 17, 2002).
Does it rain a lot in Aspen in August?
About 13 days in August have at least 0.01 in of precipitation, and the normal total is 1.8 in. The wettest August in 1991-2020 was in 2010 (4.9 in); the driest was in 1996 (0.6 in).
Is August a good time to visit Aspen?
August ranks 2nd of 12 months on our comfort score for Aspen (84 out of 100). It has about 25 comfortable days. The best month is June.
Where the numbers come from
- Temperature, rain, snowfall and snow depth: Aspen 1SW (USC00050372), 1.2 mi WSW of the city center, 8,175 ft (285 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Frost dates: Aspen Pitkin Co Airport (USW00093073), 3.5 mi NW of the city center, 7,720 ft (170 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Eagle Co Regional Airport (724675-23063), 32 mi N of the city center, 6,497 ft (1,393 ft lower than the city). Hourly observations, 1991-2020.
- Not available for this location: humidity and wind by hour and cloud cover (no station close enough or similar enough in elevation).