Last updated: February 24, 2025
In January, Guerneville experiences a diverse climate, with temperatures typically ranging from a minimum of -1°C (30°F) to a maximum of 25°C (77°F), averaging around 10°C (50°F). The month is characterized by significant precipitation, with a total of 140 mm (5.5 in) falling over approximately 9 days, contributing to a notably humid atmosphere at 86% humidity. This blend of cool temperatures and moisture sets the stage for vibrant winter scenery, making January a unique time to explore Guerneville's natural beauty.
In Guerneville, January ushers in the year with a cool climate, featuring a minimum temperature that dips to -1°C (30°F), while the average hovers around a crisp 10°C (50°F). With daytime highs reaching a pleasant 25°C (77°F), this month stands out for its moderate fluctuations, laying the groundwork for a gradual warming trend as winter transitions to spring. Interestingly, the temperatures remain fairly consistent into February, where minimums can drop to -3°C (27°F), yet the average and maximum figures hold steady. As the months progress, the increasing averages and maximums signal the approach of warmer days, with January serving as a pivotal starting point for the year’s climatic journey. This blend of chilly mornings and mild afternoons makes January an enchanting time to experience the tranquility of Guerneville’s winter landscape.
January in Guerneville brings a substantial average precipitation of 140 mm (5.5 in), making it one of the wetter months of the year. With rainfall occurring on about 9 days, the landscape awakens to a refreshing vibrancy, which sets the stage for a lush spring. This pattern of steady rainfall decreases in the following months, as February sees a slight increase to 157 mm (6.2 in) before transitioning into much drier conditions by June and July, where the area experiences little to no rain. As the year progresses, engagement with nature becomes easier with fewer precipitation days and a significant drop in total rainfall, highlighting January as a crucial month for replenishing the region in preparation for the drier summer weeks ahead.
In Guerneville, United States, January brings a notably high humidity level of 86%, setting the stage for a consistently damp winter. As the months progress, humidity slightly declines, with February and March recording 84% and 83%, respectively. This gradual decrease continues into spring, where humidity stabilizes at 80% in both April and May. By June, summer begins to make its presence felt, and humidity drops further to 76%, peaking in July at 70%. The trend then shifts towards late summer and fall, with levels gradually increasing again, reaching 72% in October and hovering around 84% by November and December. Overall, Guerneville experiences a humid climate that ebbs and flows through the seasons, providing a rich backdrop for the lush landscapes.
In Guerneville, January welcomes visitors with a moderate UV Index of 3, allowing for safe outdoor activities with a burn time of about 30 minutes. As winter transitions to spring, UV levels begin to rise, reaching 5 in February before spiking to 7 in March, signaling a shift towards higher exposure risks. By April, the index escalates to 8, marking the start of a sustained period of very high UV exposure. This upward trend culminates in the summer months, where indices peak at 11 in June and July, prompting caution with burn times dropping to just 10 minutes. As the seasons change, the UV Index gradually decreases, settling back to moderate levels by November and December. This cyclical pattern emphasizes the importance of sun safety year-round. For more insights on local UV conditions, visit Guerneville UV Index.
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In Guerneville, January ushers in a modest 141 hours of sunshine, setting the stage for a gradual increase as winter gives way to spring. This trend continues into February with 211 hours, before March sees a leap to 265 hours, heralding the vibrant colors of blooming flora. The sunshine peaks as spring blossoms into summer, culminating in June and July with 374 and 375 hours respectively, ensuring long, sun-soaked days for both locals and visitors. As summer wanes, the hours of sunshine steadily decline, with August dropping to 333 hours and September to 306 hours. By November, the days have shortened significantly to 216 hours, and December closes the year with 184 hours of sun, encouraging cozy gatherings indoors as nature prepares for its winter slumber. This rhythmic ebb and flow of sunlight highlights Guerneville's enchanting seasonal charms, inviting all to experience the beauty of each transition.
In Guerneville, California, January brings a 39% chance of sunny weather, marking it as one of the cloudier months of the year. As the year progresses, the likelihood of sunshine steadily increases, with February climbing to 58% and March further rising to 64%. This trend continues through the spring and summer months, culminating in an impressive 84% possibility of sun by May. Interestingly, the pattern suggests that, while January may start off the year less brightly, the gradual ascent in sunny days offers a hopeful glimpse of the vibrant seasons ahead, emphasizing the region's transformation from winter's chill to the warmth of summer.
In Guerneville, United States, January marks the beginning of the year with approximately 9 hours of daylight, gradually easing into longer days as the months progress. By February, daylight stretches to 10 hours, ushering in the promise of spring. As the calendar advances into March and April, the sun gifts residents a significant boost, offering 11 and then 13 hours of daylight, respectively. This steady increase peaks in May and June with a consistent 14 hours, creating the ideal backdrop for outdoor activities and natural explorations. As summer wanes in July and August, daylight remains steady at 14 hours, before tapering off into autumn. September sees a gentle decline to 12 hours, followed by a further reduction to 11 hours in October. By November, daylight returns to 10 hours, wrapping up the year as December brings the cycle full circle, ending back at 9 hours. This rhythmic ebb and flow of daylight not only marks the changing seasons but also invites residents to embrace the varied beauty of their environment throughout the year.
In Guerneville, January ushers in a gentle start to the year, characterized by an average wind speed of 2.4 m/s (5 mph). This tranquility in the air sets a serene tone, as the winds remain relatively calm compared to the gustier months that follow. As the seasons progress through February and March, a gradual increase in wind speed becomes evident, peaking at 4.1 m/s (9 mph) in May, just before summer. Interestingly, July and August revert back to the January-like calm, with winds easing to 2.4 m/s (5 mph). This cyclical pattern reflects a notable stability during the winter months, contrasted by spirited breezes in late spring, making Guerneville's weather uniquely inviting throughout the year.
The weather in Guerneville changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of January'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.
In comparing the weather between January and February, temperatures remain fairly consistent with both months experiencing averages around 10°C (50°F) and maximums reaching up to 25°C (77°F). However, January tends to have slightly milder conditions, with minimum temperatures averaging -1°C (30°F), compared to February's lower average of -3°C (27°F). Precipitation is more pronounced in February, with 157 mm (6.2 in) falling over 8 days, while January experiences 140 mm (5.5 in) over 9 days. Humidity levels are also marginally lower in February at 84%, compared to January's 86%. For more detailed insights, you can check Guerneville weather in February.
In comparing the weather between January and March, we see a slight increase in average temperatures, with January's average at 10°C (50°F) and March's at 11°C (52°F). Both months experience similar maximum temperatures, with January peaking at 25°C (77°F) and March reaching 26°C (80°F). Precipitation is notably higher in January, totaling 140 mm (5.5 in) over 9 days compared to March's 96 mm (3.8 in) across 10 days. Additionally, January has a higher humidity level at 86%, while March's humidity is slightly lower at 83%. For a more detailed look at weather conditions during this time, check out Guerneville weather in March.
In January, the weather is characterized by cooler temperatures, with a minimum of -1°C (30°F) and an average of 10°C (50°F), reaching a maximum of 25°C (77°F). The month experiences considerable precipitation of 140 mm (5.5 in) over approximately 9 days, along with high humidity levels at 86%.
In contrast, April brings milder conditions, starting with a minimum temperature of 3°C (37°F) and an average of 13°C (57°F), peaking at 30°C (86°F). Precipitation decreases significantly to 47 mm (1.9 in) across 6 days, and humidity slightly lowers to 80%. This transition highlights the shift from the chill of winter to the warmth of spring. For more detailed insights on the weather, you can check Guerneville weather in April.
In January, temperatures in Guerneville range from a chilly minimum of -1°C (30°F) to a comfortable maximum of 25°C (77°F), with an average temperature of 10°C (50°F). The month is quite wet, receiving 140 mm (5.5 in) of precipitation over about 9 days, and the humidity is notably high at 86%. In contrast, May brings milder temperatures, with a minimum of 5°C (41°F), an average of 16°C (60°F), and a warmer maximum of 33°C (91°F). Precipitation drops significantly to just 30 mm (1.2 in) over 3 days, and humidity slightly decreases to 80%. For more details on weather patterns, check out the Guerneville weather in May.
In January, the weather is significantly cooler, with temperatures ranging from a chilly -1°C (30°F) at night to a pleasant 25°C (77°F) during the day, accompanied by high humidity levels at 86%. This month also sees considerable precipitation, averaging 140 mm (5.5 in) spread over about 9 days, making it one of the wetter months.
In contrast, June brings a notable increase in warmth, with temperatures starting at a mild 9°C (48°F) and soaring to a maximum of 37°C (99°F). The summer month boasts minimal rainfall, with only 2 mm (0.1 in) and no rainy days, resulting in a drier atmosphere and lower humidity at 76%. For more detailed insights on the weather during this month, check out Guerneville weather in June.
January and July present strikingly different weather patterns. In January, temperatures can range from a chilly -1°C (30°F) to a comfortable max of 25°C (77°F), with an average of 10°C (50°F). The month experiences significant precipitation, totaling 140 mm (5.5 in) over about 9 days, contributing to the high humidity of 86%. In contrast, July offers a much warmer climate, with minimum temperatures starting at 11°C (53°F) and soaring to a high of 35°C (95°F), averaging around 20°C (68°F). Remarkably, July sees no precipitation, resulting in dry conditions with humidity dropping to 70%. For more details on summer weather, check this link: Guerneville weather in July.
January and August present striking contrasts in weather. In January, temperatures can range from a chilly -1°C (30°F) to a mild maximum of 25°C (77°F), with an average of 10°C (50°F). The month is also characterized by significant rainfall, averaging 140 mm (5.5 in) over about 9 days, and high humidity levels at 86%. In stark contrast, August boasts much warmer temperatures, with minimums around 10°C (50°F), average highs of 20°C (68°F), and scorching peaks of 35°C (96°F). Notably, August is dry, featuring no recorded precipitation and a lower humidity of 66%. For more details about the summer weather, check out Guerneville weather in August.
In January, the weather is quite chilly, with temperatures ranging from a minimum of -1°C (30°F) to a comfortable maximum of 25°C (77°F), accompanied by higher humidity levels at 86%. This month also sees significant precipitation, with about 140 mm (5.5 in) of rainfall spread over 9 days. In contrast, September brings much warmer conditions, featuring a minimum temperature of 8°C (47°F) and soaring maximums that can reach up to 40°C (103°F). This month boasts minimal precipitation, with just 2 mm (0.1 in) and no rainy days, along with lower humidity at 68%. For more details on the weather in September, check out Guerneville weather in September.
When comparing the weather in January and October, notable differences emerge. January experiences cooler temperatures with a minimum of -1°C (30°F) and an average of 10°C (50°F), whereas October enjoys milder conditions, where temperatures range from a minimum of 3°C (38°F) to an average of 16°C (62°F). Rainfall is significantly higher in January at 140 mm (5.5 in) over 9 days, while October sees much less precipitation, with only 43 mm (1.7 in) across just 2 days. Additionally, October tends to be less humid, with humidity levels at 72% compared to January's 86%. For more details on the October weather, visit Guerneville weather in October.
January and November exhibit similar minimum temperatures, both dipping to a low of -1°C (30°F). However, November tends to be slightly warmer on average, with temperatures reaching an average of 12°C (54°F), compared to January's average of 10°C (50°F). Additionally, maximum temperatures in November can climb to 27°C (81°F), while January sees a maximum of 25°C (77°F). Precipitation significantly differs between the two months, with January experiencing 140 mm (5.5 in) over 9 days, making it much wetter than November, which records only 61 mm (2.4 in) in 5 days. The humidity levels remain close, with January at 86% and November at 84%. For more details on November weather, check out Guerneville weather in November.
In comparing the weather of January and December, we see some notable differences. January features a slightly broader temperature range with minimums dipping to -1°C (30°F) and maximums reaching 25°C (77°F), resulting in an average temperature of 10°C (50°F). In contrast, December has minimums at 0°C (32°F) and only slightly cooler maximums peaking at 24°C (75°F), leading to a lower average of 9°C (49°F). While both months experience about 9 days of precipitation, January sees a marked increase in rainfall, accumulating 140 mm (5.5 in) compared to December's 102 mm (4.0 in). Humidity levels are also slightly higher in January at 86%, compared to 84% in December. For a closer look at December weather patterns, you can refer to Guerneville weather in December.
As winter settles in, January in Guerneville brings a unique chill that sets it apart from the warmer months of the year. With daytime temperatures that can reach up to 25°C yet often dipping to a brisk 10°C at night, residents experience a stark contrast to the summer heat. This month is also notable for its precipitation, with 140 mm of rain falling over approximately 9 days, leading to higher humidity levels of around 86%. The combination of cooler temperatures and increased moisture creates a refreshing atmosphere ideal for cozy indoor activities. For a deeper dive into what the weather holds throughout the year, explore the local climate trends at Guerneville Climate.