October Weather in Castle Rock, United States

Last updated: February 24, 2025

October in Castle Rock, United States presents a fascinating weather spectrum, where temperatures vary significantly from a maximum of 28°C (83°F) to a frosty minimum of -23°C (-9°F). The month boasts an average temperature of 8°C (46°F), providing a crisp autumn atmosphere. Rainfall is moderate, with 33 mm (1.3 in) of precipitation spread over 6 days, contributing to the region's lush fall foliage. Coupled with a humidity level of 77%, the weather heralds a transition into the heart of autumn, making it an intriguing time for residents and visitors alike.

October Temperature in Castle Rock

In October, temperatures in Castle Rock, United States, begin to reveal the transition from the warmth of late summer to the chill of impending winter. The minimum temperature drops to a brisk -23°C (-9°F), hinting at the frosty nights ahead. Meanwhile, the average temperature sees a mild 8°C (46°F), providing a stark contrast to the winter depths yet to come. Daytime warmth can still be felt, with a comfortable maximum of 28°C (83°F), allowing residents and visitors to enjoy the vibrant fall foliage under sunny skies. This month truly embodies the beauty of seasonal change, with crisp air and stunning landscapes, making it a delightful time to explore the outdoors before the snow arrives.

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

The chart illustrates October 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.

October Precipitation in Castle Rock

In October, Castle Rock experiences a slight dip in precipitation, with 33 mm (1.3 in) of rainfall recorded over 6 days. This month reflects a continuation of the downward trend observed since the wetter summer months, as October’s precipitation mirrors the previous month of September, which had 34 mm (1.3 in). Interestingly, this fall month experiences a notable increase in precipitation compared to the drier winter months ahead, suggesting that while the region transitions toward colder weather, it still benefits from a relatively moderate amount of rainfall. Overall, October serves as a bridge between the lush wetness of late spring and the crisp dryness of winter, creating a balanced climatic profile for Castle Rock.

October Precipitation Trends in Castle Rock

The chart displays monthly precipitation patterns in Castle Rock, with values for each month alongside October's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec17225942874559423434209
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Castle Rock

As October rolls into Castle Rock, the humidity levels settle at 77%, reflecting a consistent trend of elevated moisture lingering from the summer months, particularly following September's 79%. This slight dip signals the transition into autumn, where humidity peaks in August with 80% before gently tapering off. Throughout the year, Castle Rock experiences a diverse range of humidity levels, with the lowest point in April at 62%. However, the consistent humidity in October remains higher than the winter months, which eventually lead down to 74% in November and 80% in December. This pattern showcases a notable seasonal shift, inviting a crispness in the air while still holding onto the remnants of warmer conditions.

October Average Humidity in Castle Rock

This chart illustrates the average monthly humidity levels in Castle Rock, with October's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how October's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec74%75%66%62%74%76%75%80%79%77%74%80%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Castle Rock

As October arrives in Castle Rock, the UV Index reveals a noticeable trend heading into the cooler months. With a UV Index of 7, it falls into the high exposure category, suggesting a burn time of 25 minutes for unprotected skin. This is a decline from the extreme levels experienced in the summer months, yet it's still a reminder that UV rays can be potent. While the threat of sunburn decreases from the intense summer highs, vigilance is still encouraged as autumn sunlight can still pose risks. To stay informed about the UV Index throughout the year, check out Castle Rock UV Index.

Maximum UV Index Levels in Castle Rock for October

The chart shows the monthly maximum UV Index (UVI) for Castle Rock in October, 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 October 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.

October Sunshine in Castle Rock

As October unfolds in Castle Rock, the city basks in a delightful 274 hours of sunshine, marking a gentle decline from the sun-soaked peaks of summer. This month, while still vibrant, sees a noticeable shift from the 372 hours basking in July's glory and the 352 hours of August. The decrease continues from September's 307 hours, heralding the onset of cooler days and longer nights. October's sunshine, softened by the whisper of autumn, invites residents and visitors alike to enjoy the beauty of changing leaves under warm rays, perfectly capturing the transition of seasons while hinting at the cozy months ahead.** The rhythmic ebb and flow of sunlight in Castle Rock not only shapes the landscape but also sets the stage for a seasonal ballet of nature.**

Monthly Sunshine Duration in Castle Rock: October Highlighted

The October sunshine duration represents the total number of hours Castle Rock experiences direct sunlight during the month of October, excluding cloudy or obstructed periods. This chart compares the sunshine duration of October with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec189h242h292h311h332h365h372h352h307h274h250h244h
Data source: Castle Rock October Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Castle Rock During October

October in Castle Rock, United States, brings a delightful 70% chance of sunny weather, making it one of the sunniest months of the year. Following the trend of increasing sunshine throughout late summer and into early fall, October stands out as a bright spot before the colder months set in. The month kicks off with a higher likelihood of sunny days compared to the spring months, such as April and May, which hover around 54% and 43% respectively. This rise in sunshine from September's already impressive 69% suggests a lingering warmth that residents can enjoy while fall colors begin to emerge. As autumn progresses, the chances of sunny weather provide a perfect backdrop for outdoor activities, making October a month to look forward to.

Percentage of Sunny Days in October in Castle Rock

The chart illustrates the percentage of sunny days in Castle Rock throughout the year, with October 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 October chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Castle Rock in October

As October unfolds in Castle Rock, the daylight duration begins to wane, offering around 11 hours of sunlight—just a slight dip from the previous month. This gradual decrease is a part of a broader trend, where daylight peaks during the summer months, reaching a vibrant 14 hours in June, July, and August. As the seasons shift, the days shorten, guiding us from the longer, sun-kissed days of summer through the crispness of fall, and eventually into the depths of winter, where daylight diminishes to just 9 hours by December. This rhythmic cycle of light not only marks the passage of time but also sets the stage for the seasonal changes that define life in Castle Rock.

Average Daylight Hours in Castle Rock for October

The chart illustrates the variation in daylight duration in Castle Rock throughout the year, with October 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.

October Winds in Castle Rock

As October sweeps in, Castle Rock experiences a slight uptick in wind speed, averaging 2.6 m/s (6 mph), a modest rise from the more tranquil summer months. This blend of breezy conditions not only heralds the onset of fall but also marks a shift from the lower wind speeds of September, which lingered at 2.3 m/s (5 mph). Interestingly, this month stands out as part of a seasonal trend where wind speeds fluctuate throughout the year. While winter months like December and March tend to feel more brisk, with averages of 2.8 m/s (6 mph) and 2.9 m/s (6 mph) respectively, October offers a gentle reminder of the changing seasons—a transitional breeze that hints at cooler days ahead. As the golden leaves dance in the October wind, the shifts in airflow reflect nature’s rhythmic cycle, inviting residents to embrace the beauty of autumn in this picturesque setting.

Average October Wind Speed in Castle Rock

The chart displays monthly wind speed patterns in Castle Rock, with values for each month shown alongside October's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how October's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.32.32.92.72.72.52.42.42.32.6 m/s2.32.8
Data source: Castle Rock October wind data, generated using information from the Copernicus Climate Change Service.

How October 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 October'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.

When comparing the weather in October and January, the two months display notable differences in temperature and precipitation. October boasts a wider temperature range, with minimums dipping to -23°C (-9°F) and maximums reaching 28°C (83°F), resulting in an average temperature of 8°C (46°F). This month also experiences more precipitation, with 33 mm (1.3 in) over about six days, alongside a higher humidity level of 77%.

In contrast, January is much colder with an average temperature of -3°C (27°F), where minimum temperatures can drop to -26°C (-15°F) and maximums only reach 17°C (62°F). Precipitation is less frequent in January, totaling 17 mm (0.7 in) over three days, and humidity is slightly lower at 74%. For more detailed insights on January weather, you can visit Castle Rock weather in January.

October and February present stark contrasts in weather conditions. In October, temperatures range from a chilly -23°C (-9°F) to a warm 28°C (83°F), with an average of 8°C (46°F), accompanied by a diverse mix of precipitation occurring over about six days and a humidity level of 77%. In contrast, February typically sees lower temperatures, with a minimum of -30°C (-22°F) and a maximum of 22°C (72°F), resulting in an average of -3°C (26°F). February also experiences slightly lesser precipitation at 22 mm (0.9 in) over seven days and a humidity of 75%. For a more detailed look at the weather patterns in this month, you can check out Castle Rock weather in February.

In October, temperatures can range dramatically from a chilly -23°C (-9°F) at night to a pleasant maximum of 28°C (83°F) during the day, with an average temperature of 8°C (46°F). The month experiences about 33 mm (1.3 in) of precipitation over approximately six days, along with a relatively high humidity of 77%. In contrast, March tends to be slightly colder, with minimum temperatures reaching -24°C (-10°F) and maximums capping at 24°C (76°F), averaging around 2°C (36°F). Precipitation increases to 59 mm (2.3 in) over about seven days, and humidity is lower at 66%. For a more specific look at regional conditions, check out Castle Rock weather in March.

When comparing the weather in October and April, you'll notice a few distinct differences. In October, temperatures range from a chilly minimum of -23°C (-9°F) to a pleasant maximum of 28°C (83°F), with an average of 8°C (46°F). The month sees approximately 33 mm (1.3 in) of precipitation spread over 6 days, and humidity levels are relatively high at 77%.

In contrast, April's temperatures are slightly warmer on average, with a minimum of -18°C (0°F) and a maximum of 27°C (82°F), averaging 6°C (43°F). April experiences a bit more precipitation, totaling around 42 mm (1.7 in) over 9 days, and the humidity is lower at 62%. For a detailed look into weather specifics for Castle Rock in April, you can visit Castle Rock weather in April.

When comparing the weather in October and May, one can observe notable differences in temperature and precipitation. October experiences a wider temperature range, with minimums dipping as low as -23°C (-9°F) and maximums reaching up to 28°C (83°F), while the average hovers around a mild 8°C (46°F). In contrast, May sees milder lows of -8°C (17°F) and higher highs of 31°C (88°F), with an average temperature of 11°C (53°F). Precipitation is also heavier in May, totaling 87 mm (3.4 in) over approximately 14 days, compared to October's lighter precipitation of 33 mm (1.3 in) spread across just 6 days. This results in slightly lower humidity in May at 74%, compared to October's 77%. For a detailed look at May weather specifics, check out Castle Rock weather in May.

October weather typically features a broader temperature range, with minimums plummeting to -23°C (-9°F) and maximums reaching up to 28°C (83°F). With an average of 8°C (46°F) and about 33 mm (1.3 in) of precipitation over 6 days, it's a month defined by significant temperature fluctuations. In contrast, June enjoys milder conditions, with temperatures ranging from a minimum of 2°C (35°F) to a maximum of 35°C (96°F), and an average of 18°C (65°F). Although it experiences slightly higher rainfall at 45 mm (1.8 in) over 8 days, the humidity remains quite similar at 76%. For a detailed look at the June weather in Castle Rock, you can visit Castle Rock weather in June.

October weather in Castle Rock exhibits a wider temperature range compared to July, with minimums plummeting to -23°C (-9°F) and maximums reaching up to 28°C (83°F). The average temperature in October is around 8°C (46°F), making it significantly cooler than July's average of 21°C (70°F), where temperatures can soar to a maximum of 35°C (95°F). Additionally, October experiences less precipitation with 33 mm (1.3 in) over 6 days, compared to July's 59 mm (2.3 in) over 11 days. Humidity levels are quite similar, with October at 77% and July slightly lower at 75%. For more detailed insights, you can check Castle Rock weather in July.

October and August present contrasting weather patterns. August tends to be warmer, with average temperatures reaching 20°C (68°F) and maximums soaring to 33°C (92°F). In contrast, October features a more varied temperature range, with lows plummeting to -23°C (-9°F) and an average of 8°C (46°F), although it can still reach as high as 28°C (83°F). Precipitation is slightly higher in August, totaling 42 mm (1.6 in) over 9 days, compared to October's 33 mm (1.3 in) across 6 days. Additionally, humidity levels remain relatively high in both months, with August at 80% and October at 77%. For those interested in the specifics, you can check out the details here: Castle Rock weather in August.

In comparing the weather between September and October, we see a notable shift in temperatures. While September boasts a milder average of 17°C (62°F) with maximum highs reaching up to 33°C (92°F), October presents a significant drop, featuring a chilling minimum of -23°C (-9°F) and an average of only 8°C (46°F). Both months receive similar precipitation levels, with 34 mm (1.3 in) in September and 33 mm (1.3 in) in October, and they experience precipitation on approximately six days. Humidity remains relatively consistent, with September slightly higher at 79% compared to October's 77%. For a closer look at September's weather patterns, you can explore Castle Rock weather in September.

In October, temperatures range from a brisk -23°C (-9°F) at the lowest point to a warm 28°C (83°F) at the highest, with an average of 8°C (46°F). The month experiences a total precipitation of 33 mm (1.3 in) across 6 days, along with relatively high humidity at 77%. In contrast, November sees a notable drop in the average temperature to 2°C (37°F), with a maximum of 24°C (75°F) and the same minimum temperature of -23°C (-9°F). Precipitation decreases to 20 mm (0.8 in) over just 4 days, and humidity slightly lowers to 74%. For more details on the November climate, check out Castle Rock weather in November.

October and December exhibit notable differences in weather patterns. October experiences a broader temperature range, with minimums diving to -23°C (-9°F) and maximums soaring to 28°C (83°F), leading to an average of 8°C (46°F). In contrast, December's temperatures are more consistently cold, with a minimum of -21°C (-5°F), an average of -1°C (30°F), and a maximum of 21°C (70°F). Additionally, October sees more precipitation at 33 mm (1.3 in) over 6 days, while December has significantly less at 9 mm (0.4 in) across just 3 days. Both months maintain high humidity, with October slightly lower at 77% compared to December's 80%. For a more detailed look at December weather, check out Castle Rock weather in December.

Compare Castle Rock's Climate with Cities Worldwide

Conclusion: What to Expect From October Weather in Castle Rock

As October arrives in Castle Rock, the weather presents a striking contrast to the warmer summer months. With maximum temperatures peaking at a comfortable 28°C, the days are still pleasantly warm, but cool evenings remind us that winter is on the horizon, with overnight lows dropping to a brisk -23°C. This month also marks a shift in precipitation patterns, with an average of 33 mm spread over about six days, making the air feel increasingly humid at 77%. As the month progresses, the crispness in the air and the changing foliage create a breathtaking backdrop, highlighting the unique transition from the warmth of summer to the chill of winter. For more insights into Castle Rock’s ever-evolving weather patterns, check Castle Rock Climate.