September Weather in Ahwahnee, United States

Last updated: February 24, 2025

Experience September in Ahwahnee, United States, where the warm embrace of summer lingers with a maximum temperature of 41°C (106°F), while the average settles at a comfortable 24°C (75°F). The nights offer a refreshing breeze, dipping to a pleasant minimum of 7°C (44°F). With just 4 mm (0.2 in) of precipitation and a remarkable zero rainy days, you'll enjoy the beautiful outdoors with low humidity at 42%. This month promises ideal conditions for exploration and adventure amidst stunning landscapes.

September Temperature in Ahwahnee

In September, Ahwahnee experiences a delightful transition as summer lingers just a bit longer. With minimum temperatures around 7°C (44°F) and pleasant daytime averages reaching 24°C (75°F), it's a perfect time for outdoor adventures. While the maximum temperature can still soar to 41°C (106°F), providing a taste of the summer heat, the overall trend towards cooler days and nights marks the onset of autumn. As the landscape begins to change, visitors can enjoy mild weather perfect for exploring the stunning surroundings, while still feeling the warmth of the lingering summer sun. This month strikes a beautiful balance, making it an ideal time for both relaxation and adventure.

September Weather in Ahwahnee: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Ahwahnee, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec464750586575828174635346
Data source: Temperature data for Ahwahnee generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Ahwahnee

In September, Ahwahnee experiences a notable lull in precipitation, receiving a mere 4 mm (0.2 in) of rain, which marks one of the driest months of the year. This trend follows the dry spell of summer, where both July and August recorded no measurable rainfall at all. As the region transitions into October, a more significant uptick in rainfall is anticipated, with historical averages showing an increase to 28 mm (1.1 in) spread over just 1 day. This seasonal ebb and flow highlight Ahwahnee's unique climate patterns, characterized by a stark contrast between the wet months earlier in the year and the arid summer months. With zero precipitation days in September, the landscape often remains dry and warm, setting the stage for the upcoming autumn rains that rejuvenate the area.

September Precipitation Trends in Ahwahnee

The chart displays monthly precipitation patterns in Ahwahnee, with values for each month alongside September's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec167154164623810142864116
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Ahwahnee

In September, humidity in Ahwahnee, United States, rises to 42%, marking a subtle shift from the drier summer months, which saw levels drop to a mere 30% in August. This increase is part of a broader trend that highlights a gradual recovery of moisture in the air as fall approaches. Throughout the year, humidity peaks in the winter, with highs in January and February at 82% and 85%, respectively, before steadily declining to its lowest point in July. Following a consistent dry spell, September's rise signals a transition towards the more humid conditions typical of autumn, paving the way for the wetter months of October and November, where humidity levels return to the higher ranges of the annual cycle.

September Average Humidity in Ahwahnee

This chart illustrates the average monthly humidity levels in Ahwahnee, with September's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec82%85%80%72%58%49%36%30%42%59%78%79%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Ahwahnee

As September approaches in Ahwahnee, the UV Index reflects a notable transition, presenting a very high exposure category with a value of 9 and a burn time of just 15 minutes. This marks a decline from the peak 11 and 12 levels seen in the summer months, yet it remains significant enough to warrant caution for outdoor activities. With the days still warm but sunlight gradually diminishing, September is a reminder that sun protection is crucial as the fall season commences. Those venturing outside should stay vigilant to avoid overexposure. For a comprehensive understanding of UV levels throughout the year, visit Ahwahnee UV Index.

Maximum UV Index Levels in Ahwahnee for September

The chart shows the monthly maximum UV Index (UVI) for Ahwahnee in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec4589111212119753
Data source: Ahwahnee September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Ahwahnee

As summer gracefully transitions into autumn, September in Ahwahnee, United States, offers a delightful blend of warmth and shorter days, with 321 hours of sunshine lighting up the month. Following the peak of July and August basking in their bright glory, September maintains a generous supply of sunlight, though it signals a gradual decline as daylight hours shorten towards winter. This trend showcases a gradual retreat from the long, sun-drenched summer days, yet it still invites plenty of outdoor adventures amidst the stunning fall foliage that begins to emerge in this picturesque region. With less intense heat than the previous months, September’s sun creates the perfect atmosphere for enjoying the natural beauty and serenity that Ahwahnee has to offer.

Monthly Sunshine Duration in Ahwahnee: September Highlighted

The September sunshine duration represents the total number of hours Ahwahnee experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec172h228h276h320h369h386h390h363h321h293h244h216h
Data source: Ahwahnee September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Ahwahnee During September

In September, Ahwahnee experiences a remarkable 92% chance of sunny weather, solidifying its position as one of the sunniest months of the year. This trend follows a peak in August, where the sunshine probability reaches an impressive 97%. As summer transitions into fall, the likelihood of clear skies remains high, significantly higher than the earlier months, with January starting at just 51%. The gradual increase in sunny days from spring through late summer creates a beautiful backdrop for outdoor activities, making September an ideal time to enjoy the warmth of the late summer sun before the cooler temperatures of autumn set in.

Percentage of Sunny Days in September in Ahwahnee

The chart illustrates the percentage of sunny days in Ahwahnee throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Ahwahnee experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec51%62%59%75%87%87%82%97%92%67%69%45%
Data source: Ahwahnee September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Ahwahnee in September

As summer fades into fall, September in Ahwahnee, United States, experiences a gradual decline in daylight duration, offering about 12 hours of light. This month marks the transition from the longer, sun-drenched days of June to August, each boasting a maximum of 14 hours. With autumn approaching, daylight begins to wane, dropping to 11 hours in October and continuing the trend as the year cools. The shift in daylight serves as a reminder of nature's rhythms, gracefully guiding the community from the vibrant hues of summer into the comforting embrace of fall.

Average Daylight Hours in Ahwahnee for September

The chart illustrates the variation in daylight duration in Ahwahnee throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 55m10h 49m11h 59m13h 10m14h 10m14h 40m14h 23m13h 30m12h 21m11h 10m10h 8m9h 37m
Data source: Ahwahnee daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Ahwahnee

As September unfolds in Ahwahnee, the gentle winds average 1.9 m/s (4 mph), maintaining a consistent breeze that has characterized the summer months. This slight increase from the summer low of 1.8 m/s in March and July hints at a subtle shift towards autumn. The wind speed holds steady throughout September, proving to be a refreshing companion for outdoor activities, just like the preceding months of June and May, which also enjoyed comparable speeds. As the year progresses, a noticeable decline in wind intensity emerges, as seen in November's dip to 1.4 m/s (3 mph). Overall, September's breezy embrace signals the transition from the warm summer days to the cooler, crisper fall season in this serene region.

Average September Wind Speed in Ahwahnee

The chart displays monthly wind speed patterns in Ahwahnee, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec1.81.71.81.92.22.22.01.91.9 m/s1.91.41.8
Data source: Ahwahnee September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Ahwahnee Compares to Other Months

The weather in Ahwahnee 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 Ahwahnee and find detailed weather information for every month.

September weather is characterized by warm temperatures, with averages around 24°C (75°F) and maximums reaching up to 41°C (106°F), while experiencing minimal precipitation of only 4 mm (0.2 in) across the month. In contrast, January brings a stark shift, featuring lower temperatures with an average of 8°C (46°F) and minimums plummeting to -4°C (24°F). This winter month sees significantly more rainfall, totaling 167 mm (6.6 in) and occurring on 7 days, while humidity rises significantly to 82%. For a closer look at the conditions in January, consider checking Ahwahnee weather in January.

September and February present striking contrasts in weather conditions. In September, temperatures can soar to a maximum of 41°C (106°F) with an average of 24°C (75°F), while the month enjoys minimal precipitation of just 4 mm (0.2 in) and a humidity level of 42%. In contrast, February experiences much cooler temperatures, with a maximum of 25°C (77°F) and an average of 8°C (47°F), alongside significantly higher precipitation of 154 mm (6.1 in) over 9 days. The humidity in February also rises considerably to 85%, creating an entirely different atmospheric feel. For more detailed insights into February weather, you can visit Ahwahnee weather in February.

The weather in September is generally warm and dry, with average temperatures hovering around 24°C (75°F) and maximums reaching up to 41°C (106°F). In contrast, March brings much cooler conditions, with minimum temperatures dropping to -3°C (26°F) and an average of only 10°C (51°F), making it a significantly chillier month. Additionally, March is marked by higher precipitation levels, averaging 164 mm (6.4 in) over 11 days, while September boasts practically no rainfall at all, featuring 0 days of precipitation. The humidity also rises in March to 80%, compared to the relatively low 42% seen in September. For a detailed look at March weather specifics, you can visit Ahwahnee weather in March.

In September, the weather is typically warm to hot, with average temperatures reaching up to 24°C (75°F) and maximums soaring to 41°C (106°F). The month sees minimal precipitation, with just 4 mm (0.2 in) and no rainy days, contributing to a relatively low humidity level of 42%. In sharp contrast, April experiences much cooler temperatures, with average highs around 14°C (58°F) and minimums dropping to -2°C (28°F). This month is significantly wetter, receiving about 62 mm (2.4 in) of rain over five days, and the humidity is notably higher at 72%. For more detailed information, you can visit Ahwahnee weather in April.

September typically ushers in much warmer temperatures compared to May, with average highs reaching up to 41°C (106°F), while May sees a milder average peak of 37°C (99°F). Notably, September offers very little precipitation, averaging only 4 mm (0.2 in) over the whole month, indicating dry and arid conditions, while May experiences a significantly wetter climate with 38 mm (1.5 in) of rain spread across four days. Additionally, September boasts a lower humidity level at 42%, compared to May's higher humidity at 58%, resulting in a distinct difference in comfort levels between the two months. For more information on weather conditions, check out Ahwahnee weather in May.

When comparing the weather in September and June, both months feature similar average temperatures, hovering around 24°C (75°F). However, September experiences slightly lower humidity at 42% compared to June's 49%, making it feel a bit drier. The minimum temperatures are quite comparable, with September having a minimum of 7°C (44°F) and June at 8°C (47°F). Additionally, both months report minimal precipitation, with September receiving only 4 mm (0.2 in) and June even less at 1 mm (0.1 in). If you're interested in detailed weather patterns, you can check out Ahwahnee weather in June.

In comparing the weather of September and July, we observe notable differences in temperature and humidity. September experiences a broader temperature range with a minimum of 7°C (44°F), an average of 24°C (75°F), and a maximum of 41°C (106°F), while July maintains milder minimum temperatures starting at 14°C (58°F), an average of 28°C (83°F), and a peak of 42°C (108°F). Both months are remarkably dry, with July recording no precipitation and a humidity level of 36%, slightly lower than September's humidity of 42%. If you're interested in detailed insights into July weather, visit Ahwahnee weather in July.

In comparing the weather between August and September, it's clear that September offers a broader temperature range, with a minimum of 7°C (44°F) and a maximum of 41°C (106°F), while August remains warmer overall with a higher average of 27°C (82°F) and a minimum of 15°C (59°F). Both months experience minimal precipitation, with September receiving just 4 mm (0.2 in) and August only 1 mm (0.0 in), indicating dry conditions throughout. Interestingly, September has slightly higher humidity at 42% compared to August's 30%, which might add a touch of discomfort despite the generally pleasant temperatures. For more detailed information on August weather specifically, you can check out Ahwahnee weather in August.

In September, the weather is characterized by warm temperatures, with a minimum of 7°C (44°F) and an average high reaching a scorching 41°C (106°F). With almost no precipitation and humidity at 42%, it feels quite dry and hot. In contrast, October brings a noticeable drop in temperature, with lows of 3°C (37°F) and a much cooler average of 17°C (63°F). This month also sees increased precipitation, with 28 mm (1.1 in) falling over just one day, and humidity rising to 59%. For a more detailed look at what to expect, you can check Ahwahnee weather in October.

September's weather is characterized by warm temperatures, with an average high of 24°C (75°F) and peaks reaching up to 41°C (106°F). The month experiences minimal rainfall, only 4 mm (0.2 in), and remains dry with humidity at 42%. In contrast, November brings a significant shift, where temperatures drop considerably, averaging 12°C (54°F) with lows around -4°C (25°F) and highs reaching 28°C (82°F). Precipitation increases dramatically to 64 mm (2.5 in) over about four days, and humidity rises to 78%. This transition highlights the stark differences between the warm, dry conditions of September and the cooler, wetter weather of November. For more specific details on the November climate, you can check Ahwahnee weather in November.

September weather typically boasts warm temperatures with a minimum of 7°C (44°F) and an average high reaching up to 41°C (106°F), making it one of the hottest months. In contrast, December experiences a significant drop in temperature, with a minimum of -3°C (26°F) and an average of only 8°C (46°F). The month of September is relatively dry, with just 4 mm of precipitation over no rainy days, whereas December sees much more moisture, accumulating 116 mm of precipitation across 8 days. Additionally, humidity levels are considerably higher in December at 79%, compared to September's 42%. For more details on December weather, you can check Ahwahnee weather in December.

Compare Ahwahnee's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Ahwahnee

As the warm days of summer transition into the cooler embrace of autumn, September in Ahwahnee boasts a delightful weather profile that sets it apart from other months. With remarkably low precipitation and minimal humidity, visitors can enjoy comfortable daytime temperatures that invite outdoor adventures. The month tends to experience plenty of sunny days, ideal for hiking or exploring the stunning scenery. As the sun sets, the temperature drops significantly, offering a refreshing chill that contrasts beautifully with the daytime warmth. This unique blend of warm days and cool nights makes September an exceptional time to enjoy all that Ahwahnee has to offer. For a deeper dive into the seasonal shifts, check out Ahwahnee Climate.