Last updated: February 24, 2025
September in Coeur d'Alene, United States, offers a delightful transition from summer's warmth to the crispness of autumn. With maximum temperatures reaching a balmy 34°C (94°F) and an average of 16°C (61°F), it’s a perfect time for outdoor activities. The month sees a cooler drop to a minimum of 1°C (34°F) at night, reminding residents of the approaching fall. Rainfall is moderate, with 44 mm (1.7 in) of precipitation spread over 5 days, contributing to the region's lush environment. The average humidity is comfortable at 62%, creating an inviting atmosphere for both locals and visitors to enjoy the beauty of this scenic area.
As September unfolds in Coeur d'Alene, temperatures begin to reflect the transition from summer's heat to autumn's cool embrace. With minimums around 1°C (34°F) and average highs reaching a pleasant 34°C (94°F), the month offers a comfortable climate for outdoor activities. The average temperature settles at a mild 16°C (61°F), marking a notable drop from the summer peak while still allowing for warm afternoons. This month serves as a gentle reminder of the impending chill of October, with temperatures gradually descending as the region prepares for the enchanting colors of fall. The blend of lingering warmth and cooler nights creates a compelling atmosphere, ideal for enjoying the natural beauty that Coeur d'Alene has to offer.
In September, Coeur d'Alene experiences a noticeable shift in precipitation patterns as the dry summer months give way to more considerable rainfall. With 44 mm (1.7 in) of rain falling over five days, this month marks a transition from the parched conditions of July and August, which recorded a mere 6 mm and 14 mm respectively. This uptick in precipitation is indicative of the approach of fall, characterized by longer and wetter weather. As the landscape prepares for the cooler months ahead, September serves as a gentle reminder of nature's cyclical rhythm, leading into the more robust precipitation that typically follows in October and November.
In Coeur d'Alene, September marks a notable transition in humidity, dropping to 62% from the more humid summer months. This decrease follows the significant plunge from 64% in August, highlighting the shift towards the drier autumn season. As the year progresses, the trend reveals that the humidity peaks during the winter months, with January and February consistently holding strong at 89%. March to May shows a gradual decline, peaking in early spring and comfortably settling around 77% during the summer. After the relatively dry September, humidity rises again into October, foreshadowing the return of the wetter conditions typical of late fall and winter. This cyclical pattern illustrates the region’s dynamic climate, as it navigates between moist and dry spells throughout the year.
As September arrives in Coeur d'Alene, the UV Index reflects a notable decrease from the scorching heights of summer, settling at 7. This month falls into the high exposure category, suggesting that while sunburn risk remains elevated, it's less intense than the peak summer months. With a burn time of 25 minutes, outdoor enthusiasts should still take precautions to protect their skin during outdoor activities. This shift towards a moderately milder UV Index continues the trend of decreasing values as the year progresses, contrasting sharply with the extreme levels of 10 seen just a couple of months earlier. For more detailed information and insights, explore the Coeur d'Alene UV Index.
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As summer gradually wanes, September in Coeur d'Alene offers a delightful transition marked by an impressive 282 hours of sunshine. This vibrant month follows the peak brightness of July, which boasts a generous 411 hours, while still retaining a healthy amount of sun compared to the colder months. The sunlit days of September not only echo the warmth of summer but also herald the approach of autumn, as light levels start to dip from August's 352 hours. With each passing month, the landscape transforms, yet September stands out as a sweet sunlight oasis, providing ample opportunities for outdoor activities and scenic enjoyment before the crisp October days arrive.
In Coeur d'Alene, September typically offers a 54% chance of sunny weather, marking a slight dip from the sun-soaked heights of summer, particularly July's impressive 85%. As the vibrant hues of autumn begin to emerge, this month still enjoys a considerable amount of sunshine compared to earlier months, with June and August at 59%. It’s a time when the warm days begin to mellow, making it ideal for outdoor activities while still basking in the comfortable late-summer warmth. This trend of gradually decreasing sunny days continues into October, but for those seeking to savor the tail end of summer, September remains a delightful option in the beautiful Pacific Northwest.
As summer transitions into fall, September in Coeur d'Alene marks a gradual reduction in daylight, with approximately 12 hours of sunlight. This month sees a notable decline from the vibrant 15 hours enjoyed during the peak of summer, reflecting nature's shift towards shorter days. Following September, daylight continues to decrease, dropping to 10 hours in October, further signaling the approach of winter. The trend highlights how the long, sunlit days of late spring and summer give way to the crispness of autumn, allowing for a serene yet fleeting experience of daylight before the deepening winter sets in.
As September rolls in, Coeur d'Alene experiences a gentle breeze with an average wind speed of 2.3 m/s (5 mph), a subtle decrease from the summer months. This shift marks a gradual transition into the fall, where temperatures cool and the once vibrant summer air turns crisper. Interestingly, the wind speeds remain relatively stable throughout the year, hovering between 2.2 and 2.8 m/s in all months. Despite slight variations, the consistency hints at a comforting lull, perfect for enjoying the outdoors in the early autumn glow. As temperatures drop, the winds seem to whisper of change, inviting residents and visitors alike to savor the serene beauty of the coming season in this picturesque lakeside town.
The weather in Coeur d'Alene 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 Coeur d'Alene and find detailed weather information for every month.
In September, Coeur d'Alene experiences much warmer temperatures, with a minimum of 1°C (34°F) and an average of 16°C (61°F), peaking at a scorching 34°C (94°F). The humidity is relatively moderate at 62%, and rainfall is less frequent, averaging about 44 mm (1.7 in) over just 5 days. In stark contrast, January brings much colder conditions, with temperatures dropping to a minimum of -20°C (-4°F) and averaging around -1°C (30°F), with a maximum of only 9°C (48°F). The winter month is also significantly wetter, with precipitation reaching 100 mm (4.0 in) spread over 14 days and humidity increasing to 89%. For a more detailed look at January weather, check out Coeur d'Alene weather in January.
September and February present strikingly contrasting weather conditions. In September, temperatures range from a crisp 1°C (34°F) at night to a warm 34°C (94°F) during the day, averaging around 16°C (61°F). With typically low precipitation of 44 mm (1.7 in) over just 5 days and a humidity level of 62%, September tends to be a pleasant month for outdoor activities. In stark contrast, February sees much colder temperatures, with lows plummeting to -23°C (-9°F) and an average of -2°C (29°F), peaking at a maximum of 15°C (59°F). This month experiences more precipitation, totaling 103 mm (4.1 in) and occurring over 16 days, along with higher humidity at 89%. For more detailed insights on what to expect, check out Coeur d'Alene weather in February.
September and March present striking contrasts in weather conditions. In September, temperatures range from a chilly 1°C (34°F) at night to a warm 34°C (94°F) during the day, with an average of 16°C (61°F). The month typically experiences about 5 days of rainfall, totaling 44 mm (1.7 in) of precipitation and a humidity level of 62%. In contrast, March is much colder, with minimum temperatures plummeting to -17°C (2°F) and a daytime maximum of 19°C (67°F), averaging just 3°C (38°F). This month sees increased precipitation, with 82 mm (3.2 in) over 15 rainy days and higher humidity at 87%. For a closer look at the specifics of March weather, you can check out Coeur d'Alene weather in March.
When comparing the weather in September and April, a notable difference is evident in temperature and precipitation. September experiences milder temperatures with a minimum of 1°C and an average of 16°C, peaking at 34°C. In contrast, April is cooler, with temperatures ranging from a minimum of -5°C to an average of 7°C, reaching a maximum of 28°C. Additionally, April tends to be wetter, receiving 80 mm of precipitation over 13 days, compared to September's 44 mm over just 5 days. The humidity is also higher in April at 84%, compared to September's 62%. For more detailed information, you can check Coeur d'Alene weather in April.
When comparing the weather in September and May, notable differences emerge in temperature and precipitation. September experiences a broader temperature range, with minimums of 1°C (34°F) and maximums peaking at 34°C (94°F), while May shows a cooler average, with minimums at -1°C (31°F) and maximums reaching 31°C (88°F). Additionally, September has lower precipitation at 44 mm (1.7 in) over about 5 days, compared to May's 63 mm (2.5 in) spread across 10 days. Humidity levels also fluctuate, with September at 62% and May higher at 77%. For more detailed insights, visit Coeur d'Alene weather in May.
When comparing the weather in September to June, several notable differences emerge. September features a broader temperature range with a minimum of 1°C (34°F) and a maximum of 34°C (94°F), while June has milder lows at 5°C (41°F) and extremes reaching up to 42°C (109°F). Precipitation in September is slightly higher at 44 mm (1.7 in) with an average of 5 rainy days, compared to June's 34 mm (1.3 in) over 7 days. Additionally, June tends to be more humid, with levels at 78%, whereas September sees a lower humidity level of 62%. For more detailed information, you can check Coeur d'Alene weather in June.
In comparing the weather between September and July, September presents a more varied temperature range with a minimum of 1°C (34°F) and a maximum of 34°C (94°F), while July features a milder spectrum where temperatures range from a minimum of 8°C (46°F) to a maximum of 42°C (107°F). Precipitation is notably higher in September at 44 mm (1.7 in) over 5 days compared to the relatively dry July, which sees only 6 mm (0.3 in) on a single day. Additionally, humidity is lower in September at 62%, making it feel less sticky than July's more humid conditions, which average 77%. For a closer look at July's weather specifics, check out Coeur d'Alene weather in July.
In comparing the weather conditions of September and August, we find notable differences in temperature and precipitation. September experiences a broader range of temperatures, with a minimum of 1°C (34°F) and a maximum of 34°C (94°F), averaging 16°C (61°F). In contrast, August maintains a warmer profile, with temperatures ranging from 8°C (47°F) to a scorching 40°C (105°F), averaging 22°C (71°F). Additionally, September sees more precipitation, totaling 44 mm (1.7 in) over 5 days, compared to August's lighter rainfall of 14 mm (0.6 in) over just 3 days. Humidity levels remain quite similar, with September at 62% and August at 64%. For more detailed information about August weather, you can visit Coeur d'Alene weather in August.
September and October weather conditions display a significant shift in temperature and precipitation patterns. In September, temperatures range from a chilly 1°C (34°F) at night to a warm maximum of 34°C (94°F) during the day, accompanied by an average temperature of 16°C (61°F). The month sees relatively low precipitation levels at 44 mm (1.7 in) over just 5 days and a humidity level of 62%.
In contrast, October brings much cooler temperatures, with nighttime lows dropping to -9°C (16°F) and daytime highs peaking at 27°C (81°F), creating an average temperature of only 8°C (47°F). Rainfall increases significantly to 85 mm (3.3 in) over 11 days, coupled with higher humidity at 79%. This transition marks a definitive move from the warmth of early autumn to the brisk chill of late fall. For more detailed weather insights, you can check Coeur d'Alene weather in October.
September weather is characterized by a wide range of temperatures, with minimums reaching 1°C (34°F) and maximums soaring up to 34°C (94°F). The month averages around 16°C (61°F) and experiences relatively low precipitation at 44 mm (1.7 in) over just 5 days, accompanied by a humidity level of 62%. In contrast, November brings a significant drop in temperatures, where minimums can plummet to -9°C (16°F) and averages settle at 3°C (38°F). This month is considerably wetter, receiving 115 mm (4.5 in) of rain spread over 16 days, alongside higher humidity levels at 87%. For more details on November weather specifics, you can check Coeur d'Alene weather in November.
September and December exhibit stark contrasts in weather patterns. In September, temperatures can vary significantly, ranging from a chilly 1°C (34°F) at night to a warm 34°C (94°F) during the day, with an average of 16°C (61°F). The month sees relatively low precipitation of 44 mm (1.7 in) spread across about 5 days, and humidity levels hover around 62%. In contrast, December ushers in much colder conditions, with temperatures dropping to a minimum of -15°C (4°F) and an average of 0°C (32°F), peaking at a mild 16°C (60°F). This winter month experiences a higher tally of precipitation at 110 mm (4.3 in) over 16 days and significantly increased humidity at 90%. To explore more about December weather specifics, visit Coeur d'Alene weather in December.
As summer transitions into autumn, September in Coeur d'Alene offers a delightful mix of warmth and crispness that sets it apart from the months preceding it. With pleasant average temperatures and occasional spells of chill, this month showcases a charming contrast in climate. While the lingering warmth encourages outdoor activities, the increase in precipitation hints at the approaching fall. The 62% humidity adds a touch of softness to the air, creating a refreshing atmosphere. For those keen on exploring this beautiful region, September is an ideal time to experience its unique weather dynamics. For more details, visit Coeur d'Alene Climate.