August Weather in Castle Rock, United States

Last updated: February 24, 2025

In August, Castle Rock, United States experiences a summer climate characterized by warm temperatures and noticeable humidity. The maximum temperature can soar to 33°C (92°F), while the average hovers around a comfortable 20°C (68°F). Nights offer a refreshing coolness with minimum temperatures dropping to 7°C (45°F). While outdoor activities are often enjoyed, residents and visitors should prepare for occasional rain, with 42 mm (1.6 in) of precipitation spread across approximately 9 days. The air remains humid, averaging around 80%, adding a tropical feel to the picturesque summer backdrop of the region.

August Temperature in Castle Rock

In August, Castle Rock experiences a delightful transition toward warmer days, boasting a minimum temperature of 7°C (45°F) and a maximum of 33°C (92°F). The average temperature stabilizes around 20°C (68°F), offering a pleasant reprieve from the chill of the preceding months. This month signifies the peak of summer, bridging the warmth from July while hinting at the cooler autumn days ahead in September. The trend showcases a notable rise in temperatures compared to the frigid lows of winter, emphasizing the area's diverse climate throughout the year. Whether basking in the sun or enjoying a cool evening breeze, August in Castle Rock epitomizes the joys of summer.

August Weather in Castle Rock: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Castle Rock, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec262636435265706862463629
Data source: Temperature data for Castle Rock 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 Castle Rock

In August, Castle Rock experiences a moderate precipitation total of 42 mm (1.6 in) over 9 days, marking a slight decrease from the preceding months. This month typically showcases the tail end of the summer season, with rainfall levels that are consistent with the preceding July, which recorded similar precipitation. Despite the drop in rainfall, August remains vital for the region's transition into fall as it continues the trend of summer moisture accumulation. Notably, after a peak in May with 87 mm (3.4 in), which brought the most significant rains, the summer months exhibit more variability, balancing out with both dry spells and bursts of rain. As the landscape shifts towards autumn, these patterns of precipitation help prepare the region for the changing seasons ahead.

August Precipitation Trends in Castle Rock

The chart displays monthly precipitation patterns in Castle Rock, 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.
JanFebMarAprMayJunJulAugSepOctNovDec17225942874559423434209
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Castle Rock

August marks a peak in humidity levels in Castle Rock, United States, reaching 80%. This increase follows a steady climb from the 74% in January, with a slight dip occurring in the spring months. As summer arrives, humidity trends upward, peaking in August before beginning a gradual decline into the fall. Notably, September remains fairly humid at 79%, but the gradual transition to lower levels in October and beyond showcases Castle Rock’s characteristic seasonal shift. Overall, the data indicates that summer months consistently feature higher humidity, particularly highlighting August as the most humid month of the year.

August Average Humidity in Castle Rock

This chart illustrates the average monthly humidity levels in Castle Rock, 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.
JanFebMarAprMayJunJulAugSepOctNovDec74%75%66%62%74%76%75%80%79%77%74%80%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Castle Rock

In August, Castle Rock experiences a UV Index of 11, placing it in the extreme exposure category with a burn time of just 10 minutes. This marks a slight decrease from the peak of 12 reached during the height of summer in June and July, but exposure remains critical. As summer gives way to fall, UV levels start to decline, indicating a trend of decreasing solar intensity leading into autumn. However, as evidenced by the consistently high indices from March to August, it’s essential for residents and visitors alike to remain vigilant about sun protection during these months. For more detailed insights on UV levels throughout the year, check out Castle Rock UV Index.

Maximum UV Index Levels in Castle Rock for August

The chart shows the monthly maximum UV Index (UVI) for Castle Rock 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: Castle Rock 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 Castle Rock

In Castle Rock, United States, August typically basks in a generous 352 hours of sunshine, contributing to the region's warm summer embrace. As the year progresses from the cold depths of January, where only 189 hours of sun graces the landscape, a steady increase in daylight unfolds. By the time summer rolls around, June and July boast the highest totals, peaking at 365 and 372 hours, respectively. Although August sees a slight dip in sunshine, it remains a sun-soaked month, setting the stage for the gradual transition into fall with 307 hours in September. This pattern highlights the region's vibrant summer, making August a key player in Castle Rock's sunny narrative.

Monthly Sunshine Duration in Castle Rock: August Highlighted

The August sunshine duration represents the total number of hours Castle Rock 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.
JanFebMarAprMayJunJulAugSepOctNovDec189h242h292h311h332h365h372h352h307h274h250h244h
Data source: Castle Rock August Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Castle Rock During August

In August, Castle Rock experiences a notable uptick in sunlit days, with a 66% chance of sunny weather. This marks a pleasant shift compared to the mid-summer months of June and July, which feature slightly lower probabilities of sunshine at 53% and 58%, respectively. As summer transitions into autumn, August's sunny disposition paves the way for increased outdoor activities, setting the stage for a vibrant late summer atmosphere. This pattern continues into September and October, where sunny chances rise even higher, reaching 69% and 70%. Overall, August in Castle Rock shines brightly in the annual weather trend, offering a delightful interlude of clear skies before the cooler seasons set in.

Percentage of Sunny Days in August in Castle Rock

The chart illustrates the percentage of sunny days in Castle Rock 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 Castle Rock experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec62%61%56%54%43%54%58%66%69%70%64%75%
Data source: Castle Rock August chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Castle Rock in August

As summer begins to wane, August in Castle Rock offers a delightful 13 hours of daylight, a slight decline from the peak brightness experienced in June and July. This gradual reduction marks the transition towards autumn, following a vibrant season of long, sunny days that reached up to 14 hours. Despite this decrease, August still provides ample time for outdoor activities and enjoyment of the natural landscape before the days shorten further. As the year progresses, daylight will continue to diminish, dipping to 12 hours in September and further to 11 hours in October, reminding residents of the impending seasonal shift.

Average Daylight Hours in Castle Rock for August

The chart illustrates the variation in daylight duration in Castle Rock throughout the year, with August highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 44m10h 43m11h 58m13h 16m14h 20m14h 53m14h 35m13h 37m12h 23m11h 6m9h 59m9h 25m
Data source: Castle Rock daylight hours, calculated by summing the hours between sunrise and sunset for each day.

August Winds in Castle Rock

In Castle Rock, United States, the August winds continue a gentle trend that characterizes the region's summer months. With an average wind speed of 2.4 m/s (5 mph), the breezes remain soft and soothing, mirroring the slightly declining trend observed throughout the summer. Following a peak in March at 2.9 m/s (6 mph), the wind speeds gradually tapered off during the warmer months, with July and August both recording a consistent 2.4 m/s. The transition into September signals a return to slightly calmer conditions, as the winds resume their typical seasonal rhythm. Overall, Castle Rock’s wind patterns highlight a notable stability, with only subtle fluctuations, making it an inviting destination for those who appreciate gentle summer breezes.

Average August Wind Speed in Castle Rock

The chart displays monthly wind speed patterns in Castle Rock, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.32.32.92.72.72.52.42.4 m/s2.32.62.32.8
Data source: Castle Rock August wind data, generated using information from the Copernicus Climate Change Service.

How August Weather in Castle Rock Compares to Other Months

The weather in Castle Rock 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 Castle Rock and find detailed weather information for every month.

August and January present stark contrasts in weather, showcasing the extremes of seasonal changes. August typically enjoys a mild average temperature of 20°C (68°F), with highs reaching up to 33°C (92°F), and a relatively higher humidity of 80%. The month sees about 42 mm (1.6 in) of precipitation spread over 9 days, making it a fairly wet month. In contrast, January experiences much colder temperatures, with averages around -3°C (27°F) and lows plunging to -26°C (-15°F). Precipitation is less frequent, at only 17 mm (0.7 in) over just 3 days, contributing to a drier feel with lower humidity at 74%. For a more detailed look at January's weather, visit Castle Rock weather in January.

August and February showcase stark contrasts in weather conditions. August typically boasts a mild average temperature of 20°C (68°F) with maximums reaching up to 33°C (92°F), while February experiences much colder temperatures, averaging -3°C (26°F) and dipping as low as -30°C (-22°F). Precipitation is slightly higher in August, with 42 mm (1.6 in) over about 9 days, compared to February's 22 mm (0.9 in) across 7 days. Moreover, humidity levels are higher in August at 80%, while February maintains a more crisp 75%. For a closer look at February's unique weather characteristics, explore Castle Rock weather in February.

The weather in August is characterized by a warm climate, with average temperatures around 20°C (68°F) and maximums reaching up to 33°C (92°F). In contrast, March presents a starkly different environment, where temperatures typically range from a chilling minimum of -24°C (-10°F) to a mild average of 2°C (36°F). While August experiences relatively low precipitation of 42 mm (1.6 in) over nine days, March has slightly higher precipitation levels at 59 mm (2.3 in) across seven days, albeit with a lower humidity of 66% compared to August's 80%. For more detailed information about March conditions, you can visit Castle Rock weather in March.

When comparing the weather in April and August, a stark contrast emerges. April experiences colder temperatures, with minimums dropping to -18°C (0°F) and average daily highs reaching only 27°C (82°F). In contrast, August is considerably warmer, boasting minimums of 7°C (45°F) and average highs around 20°C (68°F), peaking at a maximum of 33°C (92°F). Both months receive similar amounts of precipitation, around 42 mm, over roughly the same number of days, but April has lower humidity at 62% compared to the 80% humidity typical in August. For more insights on April's weather, you can check Castle Rock weather in April.

August weather tends to be significantly warmer compared to May, with average temperatures in August reaching 20°C (68°F) and peaking at 33°C (92°F), while May sees a much cooler average of 11°C (53°F) and max temperatures of 31°C (88°F). Despite the higher temperatures in August, May experiences more precipitation, totaling 87 mm (3.4 in) over 14 days, compared to August's 42 mm (1.6 in) over just 9 days. Additionally, humidity levels are slightly higher in August at 80%, compared to 74% in May. For a more detailed look at May weather conditions, you can check Castle Rock weather in May.

When comparing the weather in August and June, August tends to be warmer overall, with average temperatures around 20°C (68°F) and a maximum reaching up to 33°C (92°F). In contrast, June has a slightly cooler average of 18°C (65°F) and can peak at 35°C (96°F). Both months experience similar levels of precipitation, with August receiving 42 mm (1.6 in) over 9 days and June recording 45 mm (1.8 in) over just 8 days. However, August’s humidity is higher at 80%, compared to June's 76%, leading to a more muggy feel in late summer. For a closer look at June specifics, you can explore Castle Rock weather in June.

In comparing the weather between July and August, July typically experiences slightly warmer temperatures, with an average of 21°C (70°F) and a maximum of 35°C (95°F), compared to August's average of 20°C (68°F) and a maximum of 33°C (92°F). Notably, July also tends to be wetter, receiving 59 mm (2.3 in) of precipitation over 11 days, while August sees less rainfall at 42 mm (1.6 in) over 9 days. Additionally, the humidity level in August is higher at 80%, compared to July's 75%. For more detailed information, you can check Castle Rock weather in July.

In August, temperatures range from a cool minimum of 7°C (45°F) to a warm maximum of 33°C (92°F), with an average temperature of 20°C (68°F). The month experiences 42 mm (1.6 in) of precipitation over 9 days and maintains a high humidity level of 80%. In contrast, September sees a notable drop in minimum temperatures, reaching as low as -4°C (26°F), while still peaking at 33°C (92°F) and averaging at 17°C (62°F). The month has slightly less precipitation at 34 mm (1.3 in) over 6 days and a marginally lower humidity of 79%. For more details on September weather, check out Castle Rock weather in September.

In August, the weather is typically warm, with temperatures ranging from a minimum of 7°C (45°F) to a maximum of 33°C (92°F) and an average temperature of around 20°C (68°F). The month experiences about 42 mm (1.6 in) of precipitation over 9 days, alongside high humidity levels at 80%. In contrast, October sees a significant drop in temperatures, with lows plunging to -23°C (-9°F) and a maximum of 28°C (83°F), resulting in an average of only 8°C (46°F). Precipitation in October is slightly lower at 33 mm (1.3 in) over 6 days, and humidity remains relatively consistent at 77%. For more detailed information, check out Castle Rock weather in October.

August and November present striking contrasts in weather. August typically enjoys a warm climate with average temperatures around 20°C (68°F), peaking at 33°C (92°F), and a higher humidity level of 80%, accompanied by about 42 mm of precipitation over nine days. In contrast, November brings a much chillier environment, with average temperatures dropping to just 2°C (37°F) and minimums plummeting to -23°C (-9°F), while highs reach a milder 24°C (75°F). This month experiences less precipitation, totaling about 20 mm across only four days, with humidity sitting at a slightly lower 74%. For more insights on the specifics of November weather, you can explore Castle Rock weather in November.

In August, weather is typically warm, with temperatures ranging from a minimum of 7°C (45°F) to a maximum of 33°C (92°F), and an average of 20°C (68°F). The month sees around 42 mm (1.6 in) of precipitation over about nine days, accompanied by a high humidity level of 80%. In stark contrast, December experiences much colder conditions, with temperatures plummeting to a minimum of -21°C (-5°F) and reaching a maximum of 21°C (70°F), averaging around -1°C (30°F). During this month, there is significantly less precipitation, totaling only 9 mm (0.4 in) over three days, while the humidity remains consistent at 80%. For a more detailed outlook, check Castle Rock weather in December.

Compare Castle Rock's Climate with Cities Worldwide

Conclusion: What to Expect From August Weather in Castle Rock

August in Castle Rock brings a blend of warmth and occasional rain, setting it apart from the cooler months that precede it. With maximum temperatures reaching highs of 33°C (92°F) and an average of 20°C (68°F), this month is characterized by noticeably higher warmth and a distinctive summer feel. However, the humidity can make the heat feel more intense, while the 42 mm of precipitation spread over nine days ensures that the landscape remains lush and vibrant. This combination of heat and humidity, contrasted with cooler and dryer seasonal weather, highlights August as a unique month in Castle Rock's climate. For more insights on the weather patterns of this beautiful area, visit Castle Rock Climate.