Fort Collins, CO weather in August
In August, Fort Collins sees highs around 85°F and lows around 57°F: warm, with some rain. There are about 9 days with rain. It is one of the warmest months in Fort Collins.
- Normal high
- 85°F
- Normal low
- 57°F
- Wet days
- 9
- 1.4 in total
- Muggy days
- 0
- dew point 65°F+
How August changes from start to finish
| August 1 | August 31 | |
|---|---|---|
| Normal high | 87°F | 83°F |
| Normal low | 59°F | 53°F |
| Chance of a wet day | 31% | 26% |
| Sunrise / sunset | 5:57 am / 8:15 pm | 6:26 am / 7:34 pm |
| Daylight | 14.3 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).
A typical August day
- 6 am61°Fdew point 49°F
- 9 am74°Fdew point 49°F
- Noon83°Fdew point 45°F
- 3 pm84°Fdew point 44°F
- 6 pm78°Fdew point 47°F
- 9 pm68°Fdew point 49°F
NOAA hourly normals (local standard time) from Denver Intl Airport (57 mi away); average wind 9 mph; clear or few clouds in 71% of daytime hours, mostly cloudy or overcast in 20%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F6 of 31
- Hot dayshigh 90°F or more8 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow9 of 31
- Notable rainat least 0.10 in3 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 1.4 in; a dry August brings about 0.5 in and a wet one about 2.2 in (25th and 75th percentiles). About 1 day brings half an inch or more.
How August varies from year to year
- Warmest August, 1991-20202020: average high 90°F
- Coolest August1992: average high 79°F
- Wettest August1997: 5.1 in
- Driest August2012: 0.03 in
- Highest reading99°F (August 1, 2008)
- Lowest reading39°F (August 27, 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 | 87°F | 85°F | 77°F |
| Normal low | 59°F | 57°F | 48°F |
| Wet days | 9 | 9 | 7 |
| Comfortable days | 3 | 6 | 14 |
| Daylight | 14.7 h | 13.7 h | 12.5 h |
Highs change by -2°F from July and -8°F into September.
Nearby alternatives in August
- Warmer: Pueblo, CO163 mi · high 90°F · 9 wet days
- Drier: Casper, WY170 mi · high 87°F · 6 wet days
- Cooler: Estes Park, CO27 mi · high 78°F · 13 wet days
How Fort Collins ranks in August
- Normal high209th warmest of 378 cities; 7th of 17 in Colorado
- Wet days181st driest of 378
- Comfortable days122nd most of 341
What to pack for Fort Collins in August
- Light, breathable clothing – highs near 85°F
- Layers – afternoons near 85°F but nights near 57°F
- A rain jacket or umbrella – rain on about 9 days
Heating and cooling
August has 11 heating degree days and 189 cooling degree days (base 65°F), 3% of the year's total heating and cooling demand.
Questions
How hot is Fort Collins in August?
The normal high is 85°F and the normal low is 57°F. From 1991 to 2020 the hottest August reading was 99°F (most recently on August 1, 2008).
Does it rain a lot in Fort Collins in August?
About 9 days in August have at least 0.01 in of precipitation, and the normal total is 1.5 in. The wettest August in 1991-2020 was in 1997 (5.1 in); the driest was in 2012 (0.03 in).
Is August a good time to visit Fort Collins?
August ranks 7th of 12 months on our comfort score for Fort Collins (56 out of 100). It has about 6 comfortable days and about 8 days at 90°F or hotter. The best month is May.
Where the numbers come from
- Temperature, rain, snowfall, snow depth and frost dates: Ft Collins (USC00053005), 0.6 mi S of the city center, 5,004 ft . NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour: Denver Intl Airport (USW00003017), 57 mi SSE of the city center, 5,414 ft (410 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Cloud cover: Cheyenne (USW00024018), 42 mi NNE of the city center, 6,128 ft (1,124 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Denver International Airport (725650-03017), 56 mi SSE of the city center, 5,404 ft (400 ft higher than the city). Hourly observations, 1991-2020.