Last updated: February 24, 2025
September in Salem, United States, presents a vibrant transition into autumn with average temperatures hovering around 19°C (66°F). Days can feel warm under the sun, reaching a maximum of 32°C (90°F), while evenings bring a refreshing coolness, with temperatures dipping to a minimum of 7°C (45°F). This month experiences approximately 84 mm (3.3 in) of rain, spread over about 8 days, contributing to the region's lush landscape. With a humidity level of 71%, the atmosphere remains rich and invigorating, making September a delightful time to enjoy outdoor activities and the changing foliage.
In September, Salem experiences a noticeable shift as summer winds down, offering a refreshing blend of cooler temperatures. With minimums settling around 7°C (45°F) and average highs reaching 32°C (90°F), the month presents a comfortable climate perfect for outdoor activities. This transitional period is marked by an average temperature of 19°C (66°F), striking a balance between the lingering warmth of summer and the crispness of autumn. As days grow shorter and the air turns fresher, residents and visitors alike can enjoy the vibrant scenery as nature begins to prepare for the coming fall.
In September, Salem experiences a modest precipitation total of 84 mm (3.3 in), continuing the trend of decreased rainfall seen from the summer months. With only 8 rainy days this month, it's clear that the region is transitioning into the drier fall season. This marks a slight uptick from the previous month, August, which recorded a lower total, yet falls significantly short of the wetter months like April and October. As the landscape begins to shift into autumn, the diminished rainfall helps prepare the area for the vibrant changes in foliage, yet hints at the impending increase in precipitation that typically arrives with October’s heavier downpours. Overall, September illustrates a balanced blend of lingering summer moisture and the onset of fall dryness, making it a unique transitional month in Salem's climatological calendar.
As summer wanes in Salem, September brings a slight uptick in humidity, settling at 71%. This change marks a subtle transition from the drier air of the preceding months, where July and August recorded their lowest levels at 67% and 66% respectively. While September's humidity is still lower than the early winter and spring months, which often hover in the 80s, it indicates a gradual reintroduction of moisture to the atmosphere as the region prepares for the cooler months ahead. The trend suggests that Salem's humidity levels experience a predictable ebb and flow throughout the year, with September serving as a bridge between the warmth of summer and the crispness of fall.
As September unfolds in Salem, United States, residents experience a notable drop in the UV Index, with a value of 7, categorized as high. This shift from the scorching summer months—where indices soared to 9 and 10—offers a respite, allowing for 25 minutes of safe sun exposure before risking a burn. The trend showcases a transition to milder sun intensity compared to August's peak, but caution remains essential as the fall months approach. This consistent pattern highlights the importance of being sun-smart year-round. For more insights on the UV Index throughout the year, check out Salem UV Index.
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As summer transitions into fall, September shines bright in Salem, boasting an impressive 278 hours of sunlight. This month stands out as daylight begins to taper off from the sizzling summer peak, where July and August graciously delivered a delightful 334 and 327 hours respectively. While the total hours of sunshine this month are lower than those sun-drenched summer months, September still outshines the earlier part of the year, reflecting a clear trend of increasing sunlight from the 152 hours in January to the late summer's warmth. As the days grow shorter and the air gets crisper, Salem's September offers a beautiful blend of lingering warmth and the gentle approach of autumn, making it a truly enchanting time to enjoy the outdoors.
In Salem, the likelihood of sunny weather in September stands at 44%, mirroring the percentages seen in January and indicating a potential rebound from the summer's lower averages. This trend suggests that while the sunny days may dwindle in the peak of summer with August only offering a 30% chance, September provides a refreshing opportunity for sunshine as autumn approaches. Notably, this month aligns with the unpredictable spring months, like March with its 61% sunny likelihood, hinting at Salem’s transitional climate. As the seasons shift, September offers a balance of sunshine and the onset of cooler weather, making it a delightful month to enjoy the outdoors.
As summer transitions into fall in Salem, United States, September brings a gentle decline in daylight, with the sun gracing the sky for about 12 hours. This marks a shift from the long, sun-drenched days of June and July, where daylight peaked at 15 hours. As the season progresses, daylight gradually wanes, reflecting the approaching cooler months. August, with its 13 hours of daylight, offers a lingering taste of summer before the days become shorter, paving the way for the 10 hours anticipated in October. This cyclical change not only prompts a shift in the atmosphere but also invites residents to embrace the seasonal charm that autumn brings.
As we transition into September in Salem, the average wind speed settles at 3.7 m/s (8 mph), marking a slight uptick from the languid summer months. This is part of a broader trend where the wind tends to gradually increase in strength as the year progresses, peaking through the fall and winter months. Notably, after the laid-back breezes of July and August, September offers a refreshing and invigorating change, paving the way for the more robust winds of October. Overall, the shift in wind patterns reflects the seasonal transition, inviting residents and visitors alike to experience the crispness of autumn in this charming coastal town.
The weather in Salem 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 Salem and find detailed weather information for every month.
September and January present starkly contrasting weather conditions. In September, temperatures range from a mild 7°C (45°F) at night to a warm 32°C (90°F) during the day, averaging around 19°C (66°F). The month typically experiences around 84 mm (3.3 in) of precipitation over about 8 days, with humidity levels at 71%. In contrast, January is much colder, with temperatures plummeting to a minimum of -20°C (-3°F) and only reaching a maximum of 19°C (67°F), averaging at 0°C (32°F). While January sees slightly less precipitation at 77 mm (3.0 in) over 9 days, the humidity is higher at 86%, making the chill feel even more penetrating. For more detailed information, you can check Salem weather in January.
September and February present strikingly different weather conditions. In September, temperatures range from a mild 7°C (45°F) at night to a warm 32°C (90°F) during the day, with an average of 19°C (66°F). The month typically experiences 84 mm (3.3 in) of rainfall over about 8 days and boasts a relative humidity of 71%. In contrast, February is much colder, with temperatures dipping as low as -16°C (4°F) and averaging just 1°C (33°F), while peaking at 19°C (66°F) on milder days. During this winter month, precipitation increases slightly to 96 mm (3.8 in) over approximately 11 days, accompanied by higher humidity at 84%. For more details on February weather, you can visit Salem weather in February.
September and March present quite contrasting weather patterns. In September, temperatures typically range from a minimum of 7°C (45°F) to a maximum of 32°C (90°F), with an average of 19°C (66°F), while March sees a chillier climate, with temperatures dipping as low as -14°C (7°F) and peaking at 19°C (66°F), resulting in a much lower average of 3°C (38°F). While both months experience notable precipitation—84 mm (3.3 in) in September over 8 days and 96 mm (3.8 in) in March over 10 days—March tends to be more humid, with an average humidity of 82% compared to September's 71%. For a closer look at the specific weather in March, visit Salem weather in March.
When comparing the weather in September and April, notable differences emerge. September generally boasts warmer temperatures with a minimum of 7°C (45°F) and an average of 19°C (66°F), while April can be quite chilly with a minimum of -2°C (28°F). April experiences higher precipitation, with 141 mm (5.6 in) over 13 days, compared to September's 84 mm (3.3 in) over only 8 days. Additionally, humidity levels are slightly higher in April at 80%, compared to 71% in September. For more detailed information, you can check Salem weather in April.
September and May present contrasting weather patterns, though both months experience mild temperatures. September has a broader temperature range with a minimum of 7°C (45°F) and an average of 19°C (66°F), peaking at 32°C (90°F). In contrast, May starts cooler, with a minimum of 3°C (37°F) and an average temperature of 14°C (57°F), reaching a maximum of 30°C (87°F). Precipitation levels are slightly higher in May, totaling 91 mm (3.6 in) over 11 days compared to September's 84 mm (3.3 in) across 8 days. Both months have similar humidity levels, with September at 71% and May slightly higher at 72%. For more insights, you can explore Salem weather in May.
In comparing the weather between September and June, we find that both months feature similar average temperatures, with June having a slight edge in minimum temperature at 8°C compared to September's 7°C. Both months can reach high temperatures of around 32°C (90°F), but September's precipitation is slightly less at 84 mm compared to June's 87 mm. While both months exhibit comparable humidity levels, June tends to have more rainy days, with 10 days of rain versus September’s 8 days. For more details on June weather specifically, you can visit Salem weather in June.
In comparing the weather between September and July, we see notable differences in temperature and precipitation. September features a wider temperature range, with minimums dropping to 7°C (45°F) and maximums reaching 32°C (90°F), resulting in an average temperature of 19°C (66°F). In contrast, July maintains milder lows of 14°C (57°F) and a slightly higher average of 22°C (73°F), peaking at 33°C (91°F). Additionally, July experiences more rainfall, with 116 mm (4.6 in) over 11 days compared to September's 84 mm (3.3 in) across 8 days. Humidity levels are fairly similar, with September at 71% and July slightly lower at 67%. For a closer look at July’s conditions, you can check Salem weather in July.
In comparing the weather of September to August, September experiences a notable drop in minimum temperatures, averaging 7°C (45°F) compared to August's warmer minimum of 13°C (56°F). However, both months share a similar maximum temperature of 32°C (90°F), creating warm days throughout September. While August is slightly drier with 72 mm (2.8 in) of precipitation over 10 days, September sees increased rainfall at 84 mm (3.3 in) over 8 days, contributing to a higher humidity level of 71% versus August's 66%. For more detailed information about August weather, you can visit Salem weather in August.
September typically experiences warmer temperatures, with a minimum of 7°C (45°F) and an average high of 32°C (90°F), while October sees a notable drop, reaching a minimum of 0°C (33°F) and an average high of 27°C (81°F). Additionally, October tends to be wetter, with 146 mm (5.8 in) of precipitation over 11 days compared to September's 84 mm (3.3 in) over 8 days. Humidity also rises slightly in October, reaching 78% from September's 71%. For more detailed information, check out Salem weather in October.
September and November present stark contrasts in weather conditions. In September, temperatures range from a mild 7°C (45°F) at night to a warm 32°C (90°F) during the day, averaging a comfortable 19°C (66°F). However, as the month progresses, the humidity remains relatively high at 71%, and there’s an average of 84 mm (3.3 in) of rain over about 8 days. In contrast, November experiences significantly cooler temperatures, with night lows plunging to -11°C (13°F) and daytime highs averaging around 6°C (44°F), peaking at 22°C (71°F). The month also sees increased precipitation, totaling 101 mm (4.0 in) over approximately 10 days, accompanied by higher humidity levels of 84%. For more detailed information, visit Salem weather in November.
In September, the weather is significantly warmer, featuring a minimum temperature of 7°C (45°F) and an average of 19°C (66°F), with highs reaching up to 32°C (90°F). This month experiences about 84 mm (3.3 in) of precipitation over 8 days, with humidity levels around 71%. In contrast, December brings much colder conditions, with temperatures plunging to a minimum of -18°C (0°F) and an average temperature of just 2°C (35°F), while the maximum reaches 16°C (62°F). December sees an increase in precipitation to 129 mm (5.1 in) over 10 days, accompanied by higher humidity levels at 81%. For more detailed information, you can check Salem weather in December.
As the summer heat gradually transitions into the crispness of autumn, September in Salem presents a delightful blend of warm days and cool evenings. With an average temperature hovering around a comfortable 19°C (66°F), this month sees lower humidity levels compared to the sweltering peak of summer, making outdoor activities enjoyable. While light rainfall occurs on about a quarter of the month, accumulating to 84 mm, the pleasant afternoons often outshine any drizzle. This shift in weather marks a wonderful opportunity to explore the enchanting streets of Salem as the foliage begins to change. For a deeper dive into the variations of Salem's seasons, check out Salem Climate.