Last updated: February 24, 2025
In Guerneville, United States, October brings a notable shift in weather patterns, with temperatures ranging from a minimum of 3°C (38°F) to a maximum of 35°C (94°F), averaging around 16°C (62°F). This month is characterized by a manageable humidity level of 72%, making for some pleasant, crisp days. With only 2 days of precipitation, totaling 43 mm (1.7 in), outdoor enthusiasts can enjoy the scenic beauty of the surrounding landscape while taking advantage of the seasonal changes. October in Guerneville offers a perfect blend of warmth and refreshing autumnal air, creating a vibrant atmosphere for residents and visitors alike.
In Guerneville, October ushers in a delightful transition as temperatures begin to dip from the lingering summer heat. With a minimum temperature of 3°C (38°F) and an average of 16°C (62°F), the days are pleasantly mild, making outdoor activities enjoyable. However, daytime highs can still reach a balmy 35°C (94°F), showcasing the last bursts of heat before autumn fully takes hold. As leaves turn and the landscape transforms, October becomes a harmonious blend of warm afternoons and cooler evenings, inviting residents and visitors alike to savor the beauty of this evolving season.
In Guerneville, October marks a notable transition in precipitation patterns as the region begins to emerge from the summer dry spell. This month typically brings an average of 43 mm (1.7 in) of rain, falling over just 2 days, which signifies the onset of the wetter months ahead. Compared to the preceding drier months of July and August, where no precipitation was recorded, October's rainfall acts as a welcome reprieve and foreshadows the increasing precipitation that dominates the late fall and winter seasons. With steadily rising amounts from the preceding months, October's rainfall prepares Guerneville for a transformative shift, paving the way for the lush landscapes that follow as the year progresses.
In Guerneville, United States, October marks a subtle transition in humidity levels, with the average dropping to 72%. This follows a gradual decline from the highs of 86% in January, reaching a low of 66% in August. As autumn settles in, the humidity begins to rise again as November approaches, where it climbs back to 84%. Overall, the trend illustrates a notable decrease through the summer months, then a gentle uptick as the year winds down, creating a climate that’s both refreshing in October and reminiscent of the lush, moist air in the earlier part of the year.
As autumn settles in Guerneville, the UV Index shows a notable drop compared to the summer months, reaching 6 in October, which falls into the high exposure category. This marks a shift from the extreme levels of July and June, where quick sunburns could occur in just 10 minutes. Although the burn time extends to 25 minutes in October, it remains essential to stay wary of UV rays, especially as the sun can still be quite intense. This trend highlights a gradual decrease in UV intensity as the year progresses, with higher indices in the first half of the year, particularly peaking at 10 in May. For those interested in monitoring sun exposure, the Guerneville UV Index is a valuable resource.
UV Risk Categories
October in Guerneville brings a delightful balance of sun and coolness, showcasing 275 hours of sunlight. As autumn settles in, the days gradually shorten from the vibrant summer months, where July and June bask in the most radiant glow, with 375 and 374 hours respectively. The transition into fall begins in September, which enjoys a healthy 306 hours before nudging into October. This month captures the essence of crisp air and golden leaves, all while holding onto more sunshine than the gloomier winter months ahead, such as January and December, with only 141 and 184 hours of sunlight. October's comfortable warmth and luminous days make it a perfect time to explore the beauty of Guerneville.
In Guerneville, October presents a nuanced shift in sunny weather likelihood, boasting a 52% chance of sunshine. This marks a notable decline from the preceding summer months, where July and August enjoy sunny probabilities nearing 80%. As autumn settles in, October's sun chances are more reminiscent of spring months, like March and April, which register at 64% and 71% respectively. This transition indicates that while visitors can still relish some enjoyable sunny days, they should be prepared for the potential of cloudier skies and a gentle embrace of fall's charm.
In Guerneville, the changing seasons dramatically influence daylight duration, creating a rhythmic ebb and flow throughout the year. January's brief 9 hours of daylight gradually give way to February's more welcoming 10 hours, heralding the increase that peaks in May and June with 14 hours of sunlight. As summer fades, the daylight begins to wane, settling back to 13 hours in August and 12 hours in September. By October, the days shorten further to 11 hours, hinting at the soft embrace of autumn. This steady decline continues toward the winter months, ending the year in November and December with a return to 10 and 9 hours of daylight, respectively. This cyclical pattern not only reflects the rhythm of nature but also sets the stage for the cozy indoor activities that accompany the colder months.
As October settles over Guerneville, the average wind speed gently picks up to 2.7 m/s (6 mph), a subtle shift from the calmness of preceding months. This month follows a summer of lighter breezes, particularly in July and August, when the winds dropped to 2.4 m/s (5 mph). Compared to the spring's higher gusts, peaking at 4.1 m/s (9 mph) in May, October's winds reflect a transition into the cozy embrace of autumn. While the winds of November will cool further to 1.8 m/s (4 mph), October serves as a gentle reminder of the seasonal shift, offering a refreshing, yet tranquil experience as nature prepares for winter's stillness.
The weather in Guerneville 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 Guerneville and find detailed weather information for every month.
October and January present notably different weather patterns. In October, temperatures range from a mild 3°C (38°F) at night to a warm 35°C (94°F) during the day, with an average of 16°C (62°F). The month experiences relatively low precipitation, averaging just 43 mm (1.7 in) over about 2 days, while humidity sits at 72%. In contrast, January brings much cooler temperatures, with a minimum of -1°C (30°F) and a maximum of 25°C (77°F), averaging 10°C (50°F). This month sees significantly higher precipitation, totaling 140 mm (5.5 in) over approximately 9 days, and an increase in humidity to 86%. For a more detailed look at January weather, you can check Guerneville weather in January.
October and February showcase distinct weather patterns, with October offering a warmer climate characterized by temperatures ranging from a chilly 3°C (38°F) at night to a sweltering 35°C (94°F) during the day, while February sees colder temperatures with a minimum of -3°C (27°F) and a maximum of 25°C (77°F). Precipitation levels contrast sharply as well; October experiences relatively light rainfall of 43 mm (1.7 in) over just 2 days, whereas February is significantly wetter, receiving 157 mm (6.2 in) over 8 days. Additionally, February exhibits higher humidity at 84% compared to October's 72%, contributing to a more pronounced chill in the air. For more details on February weather, check out Guerneville weather in February.
In comparing the weather between October and March, a few notable differences emerge. October temperatures range from a cool minimum of 3°C (38°F) to a warm maximum of 35°C (94°F), with an average temperature of 16°C (62°F). It typically experiences low precipitation, totaling 43 mm (1.7 in) over just 2 days, and the humidity averages around 72%. In contrast, March experiences cooler temperatures, with a minimum of 0°C (32°F) and a maximum of 26°C (80°F), leading to an average of 11°C (52°F). March is also notably wetter, receiving 96 mm (3.8 in) of rain over about 10 days, and it has higher humidity, averaging 83%. For more detailed insights, check out the Guerneville weather in March.
When comparing the weather in October and April, we see some notable differences. October typically enjoys a broader temperature range, with average highs reaching 16°C (62°F) and peaking at 35°C (94°F), while April has a slightly cooler average high of 13°C (57°F) and a maximum of 30°C (86°F). Precipitation is relatively low in both months, but October has less rainfall at 43 mm (1.7 in) over just 2 days, compared to April's 47 mm (1.9 in) spread over 6 days. Additionally, the humidity in April is higher, sitting at 80% compared to October's 72%. For more details, you can check out this link: Guerneville weather in April.
October and May showcase similar average temperatures, both hovering around 16°C (60°F). However, October can experience a broader temperature range, with minimums dipping to 3°C (38°F) and maximums soaring to 35°C (94°F), while May's temperatures are slightly milder, ranging from 5°C (41°F) to 33°C (91°F). In terms of precipitation, October sees a bit more rainfall at 43 mm (1.7 in) over 2 days, whereas May receives 30 mm (1.2 in) across 3 days. Additionally, May tends to have higher humidity at 80%, compared to October's 72%, making it feel a bit more humid. For a detailed look at May weather, you can visit Guerneville weather in May.
When comparing the weather in October and June, it's clear that both months experience a range of temperatures, though they differ significantly. October features a much cooler minimum temperature, dipping to 3°C (38°F), while June's temperatures start higher at a minimum of 9°C (48°F). On average, October boasts a comfortable temperature of 16°C (62°F), compared to June's average of 19°C (67°F). Notably, October can reach a maximum of 35°C (94°F), which is slightly lower than June's peak of 37°C (99°F). Precipitation is also a key difference; October sees about 43 mm (1.7 in) of rainfall over two days, while June remains largely dry with only 2 mm (0.1 in) and no rainy days at all. Additionally, humidity levels are quite similar, with October at 72% and June slightly higher at 76%. For more detailed information on June weather, you can explore Guerneville weather in June.
When comparing October and July weather, October presents a wider temperature range with a minimum of 3°C (38°F) and an average of 16°C (62°F), while July features milder conditions with a minimum of 11°C (53°F) and an average of 20°C (68°F). Both months can reach a maximum temperature of 35°C (95°F), but October experiences notable precipitation, with an average of 43 mm (1.7 in) over just 2 days, whereas July is typically dry, receiving no precipitation at all. Humidity levels are relatively similar, with October at 72% and July slightly lower at 70%. For more details on July weather in Guerneville, you can refer to Guerneville weather in July.
When comparing the weather in October to August, several notable differences emerge. October experiences a broader temperature range, with nighttime lows dipping to around 3°C (38°F), while the average temperature sits at 16°C (62°F). In contrast, August offers milder nights with minimum temperatures around 10°C (50°F) and a higher average of 20°C (68°F). Both months see maximum temperatures peak at around 35°C (94°F) to 35°C (96°F). However, October has a significantly higher precipitation rate, receiving 43 mm (1.7 in) over two days, while August remains dry with no recorded precipitation Guerneville weather in August. Additionally, October's humidity level is higher at 72%, compared to August's 66%, making the air feel a bit more damp during the fall month.
October's weather presents a notable shift compared to September. While September boasts higher minimum (8°C/47°F) and average temperatures (19°C/67°F), October experiences cooler nights with a minimum of 3°C (38°F) and an average of 16°C (62°F). The maximum temperature in September can reach up to 40°C (103°F), significantly warmer than October's peak of 35°C (94°F). Additionally, October sees a bit more precipitation, with 43 mm (1.7 in) over two days, in contrast to September's dry conditions with only 2 mm (0.1 in) of rain throughout the month. Humidity levels remain relatively consistent, with October at 72% and September at 68%. For more details on September's weather, you can check out Guerneville weather in September.
October's weather is marked by a wide temperature range, with minimums dropping to 3°C (38°F) and maximums soaring up to 35°C (94°F). This month experiences an average temperature of 16°C (62°F) and only 43 mm (1.7 in) of precipitation over just 2 days, resulting in a relatively comfortable level of humidity at 72%.
In contrast, November brings a noticeable chill, with minimum temperatures dipping to -1°C (30°F) and maximums peaking at 27°C (81°F). The average temperature falls to 12°C (54°F), and the month sees an increase in precipitation to 61 mm (2.4 in) over 5 days, contributing to higher humidity levels at 84%. For a closer look at November's weather specifics, visit Guerneville weather in November.
In October, the weather presents a warm and varied range, with temperatures ranging from a minimum of 3°C (38°F) to a maximum of 35°C (94°F) and an average of 16°C (62°F). Precipitation is relatively low, with only 43 mm (1.7 in) falling over just 2 days, accompanied by a humidity level of 72%. In contrast, December sees a significant drop in temperature, with a minimum of 0°C (32°F), an average of 9°C (49°F), and a maximum of 24°C (75°F). The precipitation increases to 102 mm (4.0 in) spread across 9 days, and humidity rises to 84%. This comparison highlights how October tends to be warmer and drier, while December is noticeably cooler and wetter. For more on December weather patterns, you can check Guerneville weather in December.
October in Guerneville brings a refreshing transition from the warm summer months, characterized by a mild average temperature that invites outdoor activities amidst the breathtaking fall foliage. While occasional rainfall adds a touch of unpredictability, it typically manifests in just a couple of days, resulting in minimal disruption. This month’s humidity provides a gentle embrace, making the crisp air feel invigorating rather than chilly. Overall, October offers a unique blend of warm days and cool nights, setting the stage for a beautiful autumn experience. For a detailed look at the weather patterns throughout the year, visit Guerneville Climate.