August Weather in Denver, United States

Last updated: February 24, 2025

In August, Denver experiences warm and inviting weather, making it a delightful time to explore the city. With a maximum temperature reaching 36°C (97°F), the heat is tempered by an average temperature of 22°C (72°F), providing a comfortable atmosphere for outdoor activities. The nights cool down to a pleasant minimum of 10°C (50°F), perfect for evening strolls. While August does bring some moisture, with precipitation totaling 35 mm (1.4 in) over about 7 days, the overall humidity averages around 56%, ensuring that the air remains refreshing and enjoyable. Whether you're hiking in the nearby mountains or enjoying a local festival, August in Denver offers a perfect blend of summer warmth and stunning natural beauty.

August Temperature in Denver

In August, Denver basks in warm summer temperatures, averaging 22°C (72°F), with highs reaching up to 36°C (97°F). This month marks the peak of summer, where the city enjoys longer days and plenty of sunshine, making it ideal for outdoor activities. The nights remain pleasantly mild, with minimum temperatures around 10°C (50°F), allowing for comfortable evenings. As the summer winds down, this month serves as a transition, hinting at cooler days ahead, as seen in September's drop to an average of 19°C (66°F). Overall, August embodies the essence of summer in Denver, striking a balance between warmth and cool, refreshing nights.

August Weather in Denver: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Denver, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec302939475568737266494033
Data source: Temperature data for Denver generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

August Precipitation in Denver

In August, Denver experiences a modest precipitation total of 35 mm (1.4 in), accompanied by an average of 7 rainy days. This represents a slight decrease from the more substantial moisture in May, but it remains consistent with the drier summer months of July and June. As the city transitions towards fall, the rainfall typically tapers off, making room for sunnier and slightly cooler days ahead. Overall, while August offers less rain than the spring peak, its precipitation is crucial for maintaining the region's lush landscapes before the drier months of autumn set in.

August Precipitation Trends in Denver

The chart displays monthly precipitation patterns in Denver, with values for each month alongside August's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec2329575511148443629372414
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Denver

In August, Denver experiences a moderate humidity level of 56%, marking a slight increase from the drier months of July at 52%. This rise is indicative of a transition as summer begins to wane, with humidity levels typically rising again in the fall. The overall trend throughout the year reveals a significant fluctuation in moisture content, starting from a high of 88% in January and gradually decreasing to its yearly low in July. As the seasons shift towards autumn, September sees a return to 65% humidity, suggesting that while August remains relatively comfortable, the environment readies itself for the wetter months ahead.

August Average Humidity in Denver

This chart illustrates the average monthly humidity levels in Denver, with August's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how August's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%81%76%67%58%52%56%65%76%82%89%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Denver

In August, Denver experiences a UV Index of 11, classifying it within the extreme exposure category and necessitating a burn time of just 10 minutes for unprotected skin. This slight dip from July's peak UV Index of 12 signifies that, while the sun remains intense, the hottest months are gradually giving way to early signs of fall. The trend throughout summer highlights a remarkable consistency in UV levels, with extreme ratings persisting from May through July, but August still requires caution for outdoor activities. As summer wanes, understanding these fluctuations is essential for safe sun exposure—check for updates and tips at Denver UV Index.

Maximum UV Index Levels in Denver for August

The chart shows the monthly maximum UV Index (UVI) for Denver in August, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec469111212121110754
Data source: Denver August UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

August Sunshine in Denver

In August, Denver basks in the glow of 352 hours of sunshine, making it one of the sunniest months of the year. This vibrant summer month follows July, which boasts the highest sunshine with 375 hours, but still outshines the earlier months, showcasing the city's long, bright days. As summer transitions into fall, September's 310 hours still retain that warm light, though a notable dip in sunshine begins to emerge. This gradual shift highlights a distinct trend in Denver's weather, where the vibrant energy of summer slowly yields to the cooler hues of autumn, while the city savors its sunny moments before the shorter days set in.

Monthly Sunshine Duration in Denver: August Highlighted

The August sunshine duration represents the total number of hours Denver experiences direct sunlight during the month of August, excluding cloudy or obstructed periods. This chart compares the sunshine duration of August with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec187h240h291h309h335h371h375h352h310h276h250h242h
Data source: Denver August Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Denver During August

In August, Denver enjoys a remarkable 67% chance of sunny weather, making it one of the sunniest months of the year. This increase in sunny days follows a gradual rise from earlier summer months, such as July, which has a 59% chance. Interestingly, as we transition into the fall, the likelihood of sunshine continues to remain high, with September peaking at a striking 69%. This trend highlights Denver's reputation for vibrant summers and warm, sun-filled days, creating the perfect backdrop for outdoor activities and adventures.

Percentage of Sunny Days in August in Denver

The chart illustrates the percentage of sunny days in Denver throughout the year, with August highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Denver experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec59%57%52%52%43%56%59%67%69%67%63%72%
Data source: Denver August chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Denver in August

In Denver, the summer sun begins to wane in August, offering about 13 hours of daylight, a slight decline from the peak of 14 hours experienced in June and July. This gradual decrease marks the transition from the long, vibrant days of summer to the shorter daylight hours of autumn. As the month unfolds, the daylight begins to mirror the patterns seen in earlier months, leading into September's 12 hours of sunlight. Overall, this rhythmic ebb and flow of daylight showcases the region's distinct seasonal shifts, where each month contributes to the beautiful tapestry of Colorado's natural splendor.

Average Daylight Hours in Denver for August

The chart illustrates the variation in daylight duration in Denver throughout the year, with August highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 42m10h 42m11h 58m13h 16m14h 22m14h 55m14h 37m13h 38m12h 23m11h 5m9h 58m9h 23m
Data source: Denver daylight hours, calculated by summing the hours between sunrise and sunset for each day.

August Winds in Denver

In Denver, August brings a subtle decline in wind speed, averaging around 2.3 m/s (5 mph), marking a slight drop from the summer months. This trend reflects a general pattern of stability, as wind speeds throughout the year hover around the same modest range, with only minor fluctuations. Notably, late spring and early summer maintain similar averages to August with speeds of 2.4 m/s. The winds tend to pick up during the winter months, peaking at 2.8 m/s (6 mph) in December, creating a contrast to the more tranquil summer breezes. Overall, August's winds contribute to the serene ambiance of the season, perfectly complementing the warm and vibrant climate Denver is known for.

Average August Wind Speed in Denver

The chart displays monthly wind speed patterns in Denver, with values for each month shown alongside August's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how August's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.42.62.72.72.42.52.42.3 m/s2.42.52.62.8
Data source: Denver August wind data, generated using information from the Copernicus Climate Change Service.

How August Weather in Denver Compares to Other Months

The weather in Denver changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of August's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Denver and find detailed weather information for every month.

August weather presents a stark contrast to January conditions. With temperatures fluctuating between a minimum of 10°C (50°F) and a scorching maximum of 36°C (97°F), August averages a pleasant 22°C (72°F). The month experiences around 35 mm (1.4 in) of precipitation over approximately 7 days, accompanied by a moderate humidity level of 56%. In contrast, January is characterized by much colder temperatures, ranging from a minimum of -23°C (-10°F) to a maximum of 19°C (67°F), yielding an average of -1°C (31°F). This winter month sees less precipitation than August, with only 23 mm (0.9 in) over 4 days, but a notably high humidity level of 88%. For further details, you can check Denver weather in January.

August and February present striking contrasts in weather conditions. In August, temperatures range from a cool 10°C (50°F) at night to a sizzling 36°C (97°F) during the day, accompanied by moderate humidity levels of 56% and some precipitation totaling 35 mm over about 7 days. Conversely, February experiences frigid temperatures, with a minimum of -25°C (-12°F) and an average around -1°C (30°F), peaking at a milder 25°C (78°F). The humidity is significantly higher at 87%, and while precipitation is slightly lower at 29 mm, it typically occurs over about 6 days. For more detailed information, you can read about Denver weather in February.

August and March present strikingly different weather conditions. In August, temperatures range from a comfortable minimum of 10°C (50°F) to a hot maximum of 36°C (97°F), with an average of 22°C (72°F) and relatively low precipitation of 35 mm (1.4 in) over 7 days, accompanied by mild humidity at 56%. In contrast, March experiences much colder temperatures, ranging from a frigid minimum of -20°C (-5°F) to a maximum of 27°C (80°F), with an average of just 4°C (40°F). This month sees higher precipitation levels at 57 mm (2.3 in) across 9 days, paired with elevated humidity at 81%. For more detailed insights about March weather conditions, you can visit Denver weather in March.

August and April present quite contrasting weather conditions. In August, temperatures range from a cooler minimum of 10°C (50°F) to a sweltering maximum of 36°C (97°F), with an average of 22°C (72°F). Rainfall is relatively low at 35 mm (1.4 in) over about 7 days, and the humidity is moderate at 56%. In contrast, April experiences much colder temperatures, with a minimum of -14°C (8°F) and a maximum that reaches up to 29°C (84°F), averaging at 8°C (47°F). Precipitation in April is slightly higher at 55 mm (2.2 in) over 10 days, combined with a higher humidity level of 76%. For more details on the specific weather patterns in April, you can visit Denver weather in April.

In comparing the weather between August and May, we find notable differences in temperature, precipitation, and humidity. August typically enjoys a milder range, with minimum temperatures around 10°C (50°F) and maximums soaring to 36°C (97°F), while May can see much cooler nights with minimums dropping to -6°C (21°F) and maximums reaching only 33°C (91°F). Precipitation is significantly lower in August, with only 35 mm (1.4 in) occurring over about 7 days, contrasted with May's heavier rainfall of 111 mm (4.4 in) over 14 days. Additionally, August has a slightly lower humidity level of 56%, compared to May's 66%. For a more detailed look at the conditions in May, check out Denver weather in May.

When comparing the weather in August and June, we see notable differences in temperature and precipitation patterns. August tends to have a wider temperature range, with a minimum of 10°C (50°F) and a maximum reaching up to 36°C (97°F), resulting in a comfortable average of 22°C (72°F). In contrast, June starts cooler, with a minimum of 5°C (42°F) and an average of 20°C (68°F), despite having a slightly higher maximum temperature of 37°C (99°F).

Precipitation data reveals that June receives more rainfall, totaling 48 mm (1.9 in) over a slightly longer period of 9 days, while August experiences less precipitation at 35 mm (1.4 in) across 7 days. Additionally, humidity levels are slightly higher in June at 58%, compared to 56% in August. For more information about June weather, you can check out Denver weather in June.

In comparing the weather between July and August, we see some subtle differences. July boasts a slightly higher average temperature of 23°C (74°F) compared to August's 22°C (72°F), while both months share the same maximum temperature of 36°C (98°F). Precipitation in July is notably higher at 43 mm (1.7 in) over 9 days, compared to August's 35 mm (1.4 in) over 7 days, indicating a drier month in August. Additionally, humidity levels are slightly elevated in August at 56%, compared to July's 52%. For a closer look at July's weather patterns, you can check out Denver weather in July.

August and September present a striking contrast in weather patterns. In August, temperatures range from a minimum of 10°C (50°F) to a maximum of 36°C (97°F), with a delightful average of 22°C (72°F). The month brings about 35 mm (1.4 in) of precipitation over 7 days, accompanied by a humidity level of 56%. In comparison, September sees cooler nights with minimum temperatures dipping to -2°C (30°F), while the average stays relatively moderate at 19°C (66°F). Maximum temperatures can still reach up to 36°C (98°F), but the overall climate feels different due to the increased humidity at 65% and slightly lower precipitation of 29 mm (1.2 in) over just 5 days. For more detailed insights, check out Denver weather in September.

August and October present a striking contrast in weather patterns. In August, temperatures typically range from a mild 10°C (50°F) to a scorching high of 36°C (97°F), with an average of around 22°C (72°F). The month receives approximately 35 mm (1.4 in) of precipitation over about 7 days, coupled with moderate humidity at 56%. In contrast, October experiences significantly cooler temperatures, with a minimum of -18°C (1°F) and an average of 9°C (49°F), peaking at 30°C (86°F). Precipitation slightly increases to 37 mm (1.5 in), also spread over about 7 days, but the humidity rises to 76%. For more details on October weather, you can check Denver weather in October.

August and November present contrasting weather patterns. August's temperatures range from a minimum of 10°C (50°F) to a maximum of 36°C (97°F), with an average of 22°C (72°F), creating a warm and typically humid atmosphere with 56% humidity. In contrast, November experiences much colder temperatures, with a minimum of -16°C (3°F) and a maximum of 25°C (78°F), leading to an average of just 5°C (41°F). While precipitation in August is slightly higher at 35 mm (1.4 in) over 7 days, November sees less rainfall at 24 mm (1.0 in) over only 4 days but higher humidity at 82%. For more details on November's weather, you can check Denver weather in November.

August and December present starkly contrasting weather. In August, temperatures range from a comfortable 10°C (50°F) to a hot maximum of 36°C (97°F), accompanied by moderate humidity at 56% and an average of 22°C (72°F). The month sees about 35 mm (1.4 in) of precipitation over 7 days, contributing to a lively summer atmosphere. In contrast, December plunges into much colder temperatures, with a minimum of -19°C (-1°F) and an average of just 1°C (34°F), albeit reaching a maximum of 22°C (72°F) occasionally. The month is characterized by lower precipitation at 14 mm (0.6 in) over only 3 days and high humidity at 89%, creating a chilly and potentially frosty environment. For more details, you can check the weather specifics here: Denver weather in December.

Compare Denver's Climate with Cities Worldwide

Conclusion: What to Expect From August Weather in Denver

As summer peaks in Denver during August, the weather typically presents a warm and inviting atmosphere, characterized by higher average temperatures that distinctly contrast with the cooler months of the year. While temperatures can soar to a maximum of 36°C (97°F), the evenings provide a refreshing escape to a cooler 10°C (50°F). Rainfall is moderate, with precipitation occurring on about seven days, adding a touch of humidity that averages 56%. This blend of warmth and occasional rain sets August apart as a vibrant month, perfect for outdoor activities and enjoying the natural beauty of the region. For more detailed insights into the climate throughout the year, visit Denver Climate.