Denver weather in August: Denver, Colorado: normal highs, lows, rain and records for August
Denver in August has a normal high of 88°F and a normal low of 58°F, a daily mean of 73°F, falling from 90°F on the 1st to 85°F by the 31st. Measurable precipitation falls on 8 days in a normal August, 1.58 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 31°C and low of 15°C, 40 mm of precipitation in August.
- NOAA stationDenver International Airport
- Station IDUSW00003017
- Location39.83°N 104.66°W
- Elevation5,414 ft (1,650 m)
- From the center13 miles
- Population729,019
- Jan 45° 19°
- Feb 46° 20°
- Mar 56° 28°
- Apr 62° 34°
- May 71° 44°
- Jun 83° 53°
- Jul 90° 60°
- Aug 88° 58°
- Sep 80° 50°
- Oct 65° 37°
- Nov 53° 26°
- Dec 44° 18°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Denver in August?
The normal high is 88°F and the normal low 58°F, for a daily mean of 72.9°F. August is 2.2°F cooler than July and 8.1°F warmer than September. August is the 2nd warmest month of the year in Denver and the 5th wettest. Across the month the normal high falls 5°F, from 90°F on August 1 to 85°F on August 31. From one year to the next August's mean temperature typically moves about 2.4°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 71°F and 75°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 28%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 90°F | 61°F | 28% | 14% |
| August 8 | 89°F | 60°F | 27% | 13% |
| August 15 | 88°F | 59°F | 25% | 12% |
| August 22 | 87°F | 57°F | 23% | 10% |
| August 31 | 85°F | 55°F | 21% | 10% |
Every day of August: normal high, low and chance of precipitation (warmest afternoon August 1, coldest night August 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| August 1 | 90°F | 61°F | 28% | 14% | 14 h 20 min |
| August 2 | 90°F | 61°F | 28% | 14% | 14 h 20 min |
| August 3 | 89°F | 61°F | 28% | 14% | 14 h 10 min |
| August 4 | 89°F | 61°F | 27% | 14% | 14 h 10 min |
| August 5 | 89°F | 60°F | 27% | 14% | 14 h 10 min |
| August 6 | 89°F | 60°F | 27% | 13% | 14 h 10 min |
| August 7 | 89°F | 60°F | 27% | 13% | 14 h |
| August 8 | 89°F | 60°F | 27% | 13% | 14 h |
| August 9 | 89°F | 60°F | 26% | 13% | 14 h |
| August 10 | 89°F | 60°F | 26% | 13% | 14 h |
| August 11 | 88°F | 59°F | 26% | 13% | 14 h |
| August 12 | 88°F | 59°F | 26% | 12% | 13 h 50 min |
| August 13 | 88°F | 59°F | 25% | 12% | 13 h 50 min |
| August 14 | 88°F | 59°F | 25% | 12% | 13 h 50 min |
| August 15 | 88°F | 59°F | 25% | 12% | 13 h 50 min |
| August 16 | 88°F | 58°F | 25% | 12% | 13 h 50 min |
| August 17 | 87°F | 58°F | 25% | 11% | 13 h 40 min |
| August 18 | 87°F | 58°F | 24% | 11% | 13 h 40 min |
| August 19 | 87°F | 58°F | 24% | 11% | 13 h 40 min |
| August 20 | 87°F | 58°F | 24% | 11% | 13 h 40 min |
| August 21 | 87°F | 57°F | 23% | 11% | 13 h 30 min |
| August 22 | 87°F | 57°F | 23% | 10% | 13 h 30 min |
| August 23 | 87°F | 57°F | 23% | 10% | 13 h 30 min |
| August 24 | 86°F | 57°F | 22% | 10% | 13 h 30 min |
| August 25 | 86°F | 57°F | 22% | 10% | 13 h 20 min |
| August 26 | 86°F | 56°F | 22% | 10% | 13 h 20 min |
| August 27 | 86°F | 56°F | 22% | 10% | 13 h 20 min |
| August 28 | 86°F | 56°F | 21% | 10% | 13 h 20 min |
| August 29 | 85°F | 56°F | 21% | 10% | 13 h 10 min |
| August 30 | 85°F | 55°F | 21% | 10% | 13 h 10 min |
| August 31 | 85°F | 55°F | 21% | 10% | 13 h 10 min |
- Normal high
- 88°FAugust average
- Normal low
- 58°FAugust average
- Precipitation
- 1.58 inmonth total
- Days with precipitation
- 80.01 inch or more
- Days at 90°F or more
- 14
- Daylight
- 14 h 20 min to 13 h 10 minAugust 1 to August 31
- Days at 70°F or more
- 30
- Days at 80°F or more
- 27
- Sunshine
- 84%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00003017; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Denver in August?
On a given August day the chance of 0.01 inch or more is 25% on average, highest around August 1 (28%). In all, 1.58 in falls on 8 days of a normal August.
In a normal August in Denver, 14 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00003017.
How humid and windy is Denver in August?
At 3 p.m. the normal temperature is 83°F with 23% relative humidity and a dew point of 41°F; at 6 a.m. it is 59°F with 61% humidity. The wind averages 9.5 mph, most often from the east-northeast in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 59°F | 46°F | 61% | 8.6 mph | – |
| 9 a.m. | 72°F | 46°F | 39% | 7.1 mph | – |
| noon | 81°F | 42°F | 25% | 8.0 mph | – |
| 3 p.m. | 83°F | 41°F | 23% | 9.9 mph | – |
| 6 p.m. | 76°F | 44°F | 31% | 10.4 mph | – |
| 9 p.m. | 67°F | 46°F | 47% | 10.4 mph | – |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00003017. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for August in Denver?
The warmest August temperature on Denver's official record (since 1872) is 105°F, on August 8, 1878; the coldest is 40°F, on August 22, 1904. The wettest August brought 5.85 in (1979).
The August mean against the 1991-2020 normal of 72.9°F: 2021 75.4°F (+2.5), 2022 76.1°F (+3.2), 2023 74.2°F (+1.3), 2024 75.6°F (+2.7), 2025 73.8°F (+0.9), 2026 76.3°F (+3.4). 6 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 75.4°F | +2.5°F | 0.27 in |
| 2022 | 76.1°F | +3.2°F | 1.45 in |
| 2023 | 74.2°F | +1.3°F | 0.93 in |
| 2024 | 75.6°F | +2.7°F | 0.92 in |
| 2025 | 73.8°F | +0.9°F | 4.12 in |
| 2026 | 76.3°F | +3.4°F | 1.59 in |
Source: records: ACIS, NWS threaded record DENthr; recent months: ACIS, station USW00003017. Records and recent months use complete months only.
How does August in Denver compare across Colorado?
Across the 125 places PlainClimate covers in Colorado, August normal highs run from 68°F in Leadville to 93°F in Lamar; Denver's is 88°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.