Last updated: February 24, 2025
In September, Hood River, United States experiences a diverse range of weather conditions, with maximum temperatures peaking at an impressive 38°C (101°F) and an average temperature lingering around 16°C (62°F). The month presents a refreshing contrast, as temperatures can drop to a minimum of 3°C (37°F), showcasing the region's variability. While the area receives about 40 mm (1.6 in) of precipitation over 5 days, the humidity settles at a comfortable 59%, making for a pleasant, crisp environment. This unique blend offers both warm sunny days and cool nights—ideal for outdoor adventures and enjoying the beauty of fall.
In September, temperatures in Hood River begin to reflect the gentle transition into autumn. With a minimum of 3°C (37°F) and an average of 16°C (62°F), the chill in the air becomes more noticeable compared to the highs of summer. The month can still feel warm, peaking at a striking 38°C (101°F), reminding us of the lingering summer heat. This juxtaposition creates a beautiful tapestry of seasonal change, where cooler mornings give way to pleasantly warm afternoons, inviting locals and visitors alike to relish the stunning landscapes and vibrant fall colors. As the year progresses towards October, these temperatures signal a shift, moving away from the sweltering highs of late summer and embracing the crispness of fall.
In September, Hood River experiences a modest rise in precipitation, recording 40 mm (1.6 in) over five days of rainfall. This increase follows a notably dry summer, where July and August saw minimal precipitation, with only 2 mm (0.1 in) and 4 mm (0.2 in) respectively. As autumn approaches, the transition is marked by a return to a more typical precipitation pattern, leading into October's expected 90 mm (3.5 in). This September uptick hints at the region's shift from the arid summer months to the wetter fall season, setting the stage for the lush landscapes that define Hood River's charm in the months to come.
September in Hood River marks a notable shift in humidity levels, as the summer months begin to wane. With an average humidity of 59%, it represents the lowest point of the year, transitioning from August's 62%. This decline not only signals the onset of fall but also provides a refreshing change from the more humid spring and summer periods, where levels hovered around 80% to 87%. As October approaches, humidity begins to rise again, returning to 78%, reinforcing the trend of increased moisture during the winter months. This seasonal fluctuation in humidity enhances Hood River's charm, making September a perfect time to enjoy the crisp, clear air before the wetter months set in.
In September, Hood River experiences a UV Index of 8, categorized as very high, which indicates a significant risk of harm from unprotected sun exposure. The burn time drops to a swift 15 minutes, similar to the peak summer months of June, July, and August, underscoring the importance of protection even as the summer winds down. This trend demonstrates a pattern of elevated UV levels from May through September, creating an urgent reminder for residents and visitors alike to stay vigilant against sun damage during these months. As the seasons transition to fall, the UV Index begins to decline, but it remains essential to be aware of the sun's strength. For those looking to learn more about UV levels and protection strategies, check out the detailed information here: Hood River UV Index.
UV Risk Categories
As September arrives in Hood River, the warm glow of summer begins to fade, yet the skies still offer a generous 287 hours of sunshine, making it a beautiful transitional month. Following the peak of 408 hours in July, sunlight gradually decreases, but September holds onto the warmth longer than the cooler months that follow. This month’s sunlit hours reflect a notable decline from the summer highs, yet comfortably outshine those of early autumn, suggesting a lingering sense of summer's embrace. Nature begins to transform, with the vibrant colors of fall starting to emerge, but for those soaking up the golden rays, September serves as a final hurrah of sunny days before the chill of October settles in.
September in Hood River, United States, offers a pleasant balance of sunshine as summer transitions into autumn. With a 55% chance of sunny weather, this month showcases a significant decline from the summer peak of 81% in July, yet remains brighter than the drizzly days of fall and winter. As the vibrant hues of early fall foliage emerge, the likelihood of sunshine still allows for outdoor adventures to be enjoyed amidst the scenic backdrop. While the chances dip notably in the months that follow, September stands as a charming window where sunlight still graces the region, making it an ideal time for exploration and relaxation before the clouds roll in.
As September unfolds in Hood River, the days begin to shorten, with daylight lasting 12 hours. This marks a transition from the long, sun-drenched days of summer, where June and July bask in about 15 hours of sunlight. The gradual decline in daylight hours can be traced back to the last two months of summer, where August offers a still generous 14 hours. However, as the vibrant colors of autumn start to emerge, the days become noticeably shorter as the region heads back toward the depths of winter. With October's daylight dipping to 10 hours and November and December even further down to 9 and 8 hours, September serves as a poignant reminder of the seasonal changes ahead, striking a perfect balance between warmth and the crisp promise of fall.
As September rolls in, Hood River experiences a slight dip in wind speed, averaging 2.2 m/s (5 mph), a reduction from the peak summer gusts. This month marks a transitional phase in the area's wind patterns, as it sees a retreat from the vibrant breezes typical of July and August, where speeds reached 3.1 m/s (7 mph) and 2.9 m/s (6 mph), respectively. The softer winds of September create a serene atmosphere, perfect for leisurely strolls along the waterfront or enjoying the changing colors of autumn. This trend of gradually declining wind speeds continues into the fall, setting the stage for more tranquil days ahead as the chill of October beckons.
The weather in Hood River changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Hood River and find detailed weather information for every month.
September weather showcases a wide range of temperatures, with a minimum of 3°C (37°F), an average of 16°C (62°F), and a maximum reaching a sizzling 38°C (101°F). The month also sees relatively low precipitation, at 40 mm (1.6 in) over only 5 days, paired with moderate humidity at 59%. In contrast, January is characterized by much colder conditions, with temperatures dropping to a minimum of -20°C (-4°F) and averaging just 1°C (34°F); even the maximum temperature is a cool 11°C (52°F). This winter month experiences significantly higher precipitation, totaling 166 mm (6.5 in) over 17 days, coupled with higher humidity at 86%. For a closer look at Hood River’s January weather, visit Hood River weather in January.
September and February exhibit stark contrasts in weather conditions. In September, temperatures can range from a chilly 3°C (37°F) at night to a warm 38°C (101°F) during the day, with an average temperature of 16°C (62°F). The month experiences relatively low precipitation levels, totaling 40 mm (1.6 in) over just 5 days, alongside a humidity level of 59%. Conversely, February brings significantly colder temperatures, with a minimum of -15°C (4°F) and an average of only 2°C (35°F), while daytime highs reach a mild 16°C (61°F). This month also sees much higher precipitation, totaling 178 mm (7.0 in) and occurring over 17 days, characterized by increased humidity at 87%. For more details, you can check Hood River weather in February.
September and March present starkly different weather conditions. In September, temperatures can range from a chilly 3°C (37°F) at night to a scorching maximum of 38°C (101°F), with an average of 16°C (62°F). The month sees moderate precipitation, totaling 40 mm (1.6 in) over about 5 days, while humidity levels hover around 59%. In contrast, March is much cooler, with minimum temperatures dipping to -13°C (9°F) and an average of only 5°C (40°F), peaking at 18°C (65°F). This month experiences significantly more rainfall, accumulating 106 mm (4.2 in) across 16 days, and is characterized by higher humidity at 86%. For more detailed insights into March weather patterns, check out Hood River weather in March.
When comparing the weather in September and April, a stark contrast emerges. September typically experiences milder temperatures, with a minimum of 3°C (37°F), an average of 16°C (62°F), and a maximum soaring to 38°C (101°F). Precipitation is relatively light, averaging 40 mm (1.6 in) over about 5 days, accompanied by a humidity level of 59%. In contrast, April brings cooler temperatures, including a minimum of -6°C (22°F) and an average of 8°C (47°F), with a maximum reaching 25°C (78°F). This month is wetter, with significant precipitation of 91 mm (3.6 in) over roughly 13 days, and a higher humidity of 85%. For more detailed insights, check out Hood River weather in April.
September and May exhibit distinct differences in weather patterns. In September, the temperatures range from a minimum of 3°C (37°F) to a maximum of 38°C (101°F), with an average of 16°C (62°F). The month experiences about 40 mm (1.6 in) of precipitation over 5 days, accompanied by a humidity level of 59%. In contrast, May sees cooler temperatures with a minimum of 0°C (33°F) and a maximum of 31°C (88°F), averaging 13°C (56°F). Precipitation levels are slightly lower at 37 mm (1.4 in), but it occurs over a greater number of days—8 in total—resulting in a higher humidity of 80%. For a closer look at weather conditions during this time, check out Hood River weather in May.
When comparing the weather in September to that in June, there are some notable differences. September typically experiences a wider temperature range, with minimums dropping to 3°C (37°F) and maximums soaring up to 38°C (101°F), resulting in an average temperature of 16°C (62°F). In contrast, June has slightly milder minimum temperatures at 4°C (39°F) and can reach higher maximums of 44°C (112°F), with an average of 17°C (63°F). Precipitation levels are slightly higher in September at 40 mm (1.6 in), versus June's 28 mm (1.1 in), although both months see about five days of rainfall. Additionally, June tends to be more humid, with humidity levels at 82%, compared to September's 59%. For a detailed exploration of the weather conditions, you can check Hood River weather in June.
In comparing the weather of September and July, September experiences a wider range of temperatures, with a minimum of 3°C (37°F) and a maximum of 38°C (101°F), averaging around 16°C (62°F). In contrast, July has warmer temperatures overall, with a minimum of 6°C (44°F), an average of 21°C (70°F), and a peak at 40°C (103°F). While September sees more precipitation, totaling 40 mm (1.6 in) over five days, July remains dry with only 2 mm (0.1 in) and no days of rain. The humidity in July is also higher at 78%, compared to September’s 59%. For more details on July weather, check out Hood River weather in July.
In comparing the weather between September and August, September experiences a broader temperature range, with minimums dropping to 3°C (37°F) and maximums peaking at 38°C (101°F). In contrast, August is generally warmer, with minimum temperatures at 5°C (42°F) and an average of 21°C (70°F), reaching a maximum of 40°C (104°F). Additionally, September sees slightly higher rainfall, with 40 mm (1.6 in) over five days, compared to August's minimal 4 mm (0.2 in) over just one day. Humidity levels remain rather consistent, with September at 59% and August at 62%. For more specifics on August weather patterns, you can refer to Hood River weather in August.
September in Hood River experiences a significant temperature range, with minimums around 3°C (37°F) and maximums soaring up to 38°C (101°F). Average temperatures settle at a comfortable 16°C (62°F), accompanied by relatively low humidity at 59% and only 40 mm (1.6 in) of precipitation over about 5 days. In contrast, October sees a notable drop in temperatures, with minimums dipping to -6°C (22°F) and average temperatures falling to 9°C (49°F). While the maximum temperature still reaches a pleasant 29°C (84°F), the month is characterized by increased humidity at 78% and more precipitation, totaling 90 mm (3.5 in) across 9 days. For a detailed look at the climate specifics, check out Hood River weather in October.
In September, the weather is characterized by a wide temperature range, with minimums around 3°C (37°F) and maximums soaring up to 38°C (101°F), leading to an average of 16°C (62°F). Precipitation is relatively low at 40 mm (1.6 in) over about 5 days, with humidity sitting at 59%. In contrast, November brings a much cooler climate, with temperatures dropping significantly; the minimum can reach -6°C (21°F) and the average is just 5°C (41°F), while maximums are more Temperate at 17°C (62°F). The month sees a substantial increase in precipitation, totaling 133 mm (5.2 in) over 15 days, and higher humidity levels at 88%. For a closer look at what to expect, you can check out Hood River weather in November.
September and December exhibit stark contrasts in weather patterns. In September, temperatures range from a minimum of 3°C (37°F) to a maximum of 38°C (101°F), with an average of 16°C (62°F). In contrast, December sees much cooler temperatures, with a minimum of -13°C (9°F) and an average of only 2°C (35°F), peaking at a maximum of 16°C (61°F). While September experiences relatively low precipitation of 40 mm (1.6 in) over just 5 days, December is considerably wetter, with 173 mm (6.8 in) of precipitation over 18 days and higher humidity levels of 88%. For a detailed look at the weather in this month, you can visit Hood River weather in December.
As summer fades, September in Hood River ushers in a refreshing change with milder temperatures and increased humidity, offering a pleasant escape from the sweltering heat of previous months. With an average temperature of 16°C (62°F) and occasional peaks reaching up to 38°C (101°F), this month balances warmth and coolness perfectly, making outdoor activities more enjoyable. While precipitation becomes more frequent, averaging 40 mm (1.6 in) over about five days, the overall atmosphere remains inviting. For those keen on understanding how these shifts affect local conditions year-round, explore more details about the region's climate at Hood River Climate.