Weather in Denver in August 2025
Average weather
Average temperature in Denver in August
Going from a maximum of +36°C during the day to a minimum of +12°C during the night, the temperature in August averages around +31°C.
The average maximum temperature goes up 17% by the end of the month, compared with the beginning of the month, from +31°C to +35°C.
Is Denver warm or cold in August?
Denver is typically warm in August.
Maximum temperatures go down compared to the previous month from +31°C to +30°C. The minimum temperature also goes down from +16°C to +15°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
August is one of the warmest months in Denver, here is the comparison with other months:
Climate in Denver in August
| July | August | September | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +31°C | +30°C | +26°C | ||||
| Min. temperature | ||||||
| +9°C | +5°C | -10°C | ||||
| Max. temperature | ||||||
| +38°C | +38°C | +37°C | ||||
| Rainfall | ||||||
| 57 mm | 50 mm | 41 mm | ||||
| Wind | ||||||
| 1 m/s | 1 m/s | 1 m/s | ||||
| Humidity | ||||||
| 51% | 53% | 52% | ||||
| Air pressure | ||||||
| 1014 HPa | 1015 HPa | 1015 HPa | ||||
| Sunny days | ||||||
| 7 | 7 | 12 | ||||
| Cloudy days | ||||||
| 6 | 6 | 6 | ||||
| Rainy days | ||||||
| 15 | 15 | 10 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
August weather is still as good as in July. It’s getting colder in August. From +31°C in the day, the average maximum temperature lowers to +30°C. As August arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 57 mm to 50 mm. Humidity rises from 51% to 53%. The average wind speed doesn’t change much during August, staying around 1 m/s. The amount of sunny days stay about the same, averaging 7 sunny days during the month.
September brings much the same weather, it remains good.
Wind
The average wind speed is 1 m/s getting up to 1 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Denver is gradually increasing during August, going from 1 m/s to 1 m/s over the course of the month.
Rain
How was the weather last August in Denver?
Climate Change over Years
The climate in Denver in August has not changed much over the last 43 years.
The average temperature was the lowest in 1983 (+16°C) and the highest in 2012 (+20°C). The driest year was 2002 with only 211 mm of rainfall, and the wettest year was 2023 with 681 mm.
FAQ
Is August a good time to visit Denver?
Can you sunbathe in Denver in August?
Is Denver rainy in August?
Is it sunny in Denver in August?
Other cities in USA
Monthly weather in Denver
Source of the data
For this page, we’ve looked at the typical weather in Denver, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.