September Weather in Hershey, United States

Last updated: February 24, 2025

Experience the diverse September weather in Hershey, United States, where temperatures showcase a remarkable range. This month, you can expect maximum highs reaching 34°C (94°F), providing warm sunshine, while average temperatures hover around 21°C (69°F) for a comfortable feel. Drop down to the cool side with minimum lows of 5°C (41°F), showcasing the season’s transition. Rainfall is not uncommon, with 113 mm (4.5 in) of precipitation over 10 days, contributing to the area's lush landscapes. With an average humidity of 66%, September offers a mix of warmth and refreshing breeziness, perfect for outdoor activities and exploring the local charm.

September Temperature in Hershey

In Hershey, United States, September marks a transition towards cooler days, with temperatures reflecting a comfortable shift as summer recedes. The month welcomes an average temperature of 21°C (69°F), feeling pleasantly mild, while the minimum dips to 5°C (41°F), hinting at the approaching fall. Max temperatures reach up to 34°C (94°F), showcasing the lingering warmth from summer. This gradual cooling trend is characteristic of September, making it an ideal time for outdoor activities as the heat of late summer gives way to the crispness of autumn.

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

The chart illustrates September temperature patterns in Hershey, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec343743536372787569594437
Data source: Temperature data for Hershey 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 Hershey

In September, Hershey experiences a moderate amount of precipitation, with 113 mm (4.5 in) falling over approximately 10 days of rain. This marks a slight decrease compared to the bustling summer months of July and August, where rainfall peaked at 136 mm (5.4 in) and 122 mm (4.8 in), respectively. The transition into autumn sees a respectable balance, as September's rain is pivotal for nourishing the landscape before the cooler months set in. Overall, while September exhibits a dip from the peak summer figures, it maintains a robust contribution to the yearly precipitation totals, positioning it as a crucial month in the annual cycle of weather in Hershey.

September Precipitation Trends in Hershey

The chart displays monthly precipitation patterns in Hershey, 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.
JanFebMarAprMayJunJulAugSepOctNovDec6810497106125951361221131069092
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Hershey

As the summer months fade, September in Hershey brings a subtle rise in humidity, peaking at 66%. This marks a slight uptick from the drier conditions of August, which recorded 62% humidity. The trend of decreasing moisture levels is evident as the year progresses from a humid start—with January and February averaging around 87%—down to the summer lows in July and August. However, September signals a shift towards a more humid atmosphere once again, as the region braces for the return of autumn's moisture, anticipated later in the year with October returning to 79% and November climbing back up to 87%. This seasonal ebb and flow create a dynamic climate, reflecting the unique character of Hershey throughout the year.

September Average Humidity in Hershey

This chart illustrates the average monthly humidity levels in Hershey, 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.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%85%83%75%74%65%62%66%79%87%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Hershey

As September rolls into Hershey, the UV Index remains on the higher side with a value of 8, categorizing it as very high. This indicates that sun exposure can lead to skin damage in just 15 minutes, emphasizing the importance of protective measures during outdoor activities. The trend from earlier months shows a slight decline from the peak UV Index of 10 seen in June and July, yet it is still critical to be cautious as we transition into fall. As the days gradually shorten and temperatures drop, the UV Index will continue to decline, but September reminds residents that challenges from sun exposure persist. For more detailed information on daily UV levels, visit Hershey UV Index.

Maximum UV Index Levels in Hershey for September

The chart shows the monthly maximum UV Index (UVI) for Hershey 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.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
Data source: Hershey 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 Hershey

As summer gently fades, September in Hershey unfolds with a delightful balance of sunshine, boasting 270 hours of sunlight. This marks a notable dip from the sun-soaked peak of July, which sees an impressive 344 hours, yet remains vibrant compared to the winter months. The gradual decline in sunlight hours from the summer's end, while still generous, hints at the shifting seasons. September's sunshine embraces the warmth of late summer and the crispness of early autumn, creating an ideal backdrop for outdoor activities and fall festivities. As the month transitions, Hershey’s charm lingers, allowing residents and visitors to savor the last moments of warmth before the cooler days set in.

Monthly Sunshine Duration in Hershey: September Highlighted

The September sunshine duration represents the total number of hours Hershey 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.
JanFebMarAprMayJunJulAugSepOctNovDec132h167h237h243h261h313h344h310h270h223h210h173h
Data source: Hershey September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Hershey During September

As September rolls into Hershey, there's a notable uptick in the likelihood of sunny weather, with a sunny day probability reaching 49%. This is a significant jump compared to the summer months, where July peaks at 48%, while August slips back to 36%. As fall approaches, the chance for sunshine becomes more favorable than many earlier months, with only November boasting a higher likelihood at 53%. This mid-transition period sees a delightful blend of warm days and clear skies, making September particularly appealing for outdoor activities and enjoying the last remnants of summer warmth before autumn settles in.

Percentage of Sunny Days in September in Hershey

The chart illustrates the percentage of sunny days in Hershey 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 Hershey experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec34%27%52%42%37%37%48%36%49%35%53%31%
Data source: Hershey September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Hershey in September

As September arrives in Hershey, United States, residents revel in a gentle transition from the exuberance of summer to the coziness of fall. With 12 hours of daylight, this month marks a subtle decline from the peak of summer, yet it still offers ample sunlit hours for outdoor activities and leisurely strolls. The trend highlights a gradual reduction in daylight as the year progresses, beginning with 9 hours in January and peaking at 14 hours during the summer months. As the days grow shorter, the charm of early autumn emerges, inviting the vibrant hues of changing leaves and the crispness of the air—an enchanting preview of the seasonal shifts to come.

Average Daylight Hours in Hershey for September

The chart illustrates the variation in daylight duration in Hershey throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 39m10h 40m11h 58m13h 18m14h 25m14h 58m14h 40m13h 40m12h 24m11h 4m9h 55m9h 20m
Data source: Hershey daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Hershey

As September rolls into Hershey, the average wind speed gently picks up to 2.7 m/s (6 mph), a slight increase from the languid summer months. This uptick indicates a transition, as the city moves away from the calm breezes of July and August, which dipped to their lowest averages of 2.1 m/s (5 mph) and 2.0 m/s (4 mph), respectively. The winds of September introduce a refreshing change, hinting at the arrival of autumn, yet they remain moderate compared to the brisker winds felt in the spring months, peaking at 3.5 m/s (8 mph) in March. This subtle crescendo in wind speed not only adds a touch of energy to the landscape but also invites residents and visitors alike to embrace the beautiful transition of the seasons.

Average September Wind Speed in Hershey

The chart displays monthly wind speed patterns in Hershey, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.13.03.53.32.82.42.12.02.7 m/s2.62.92.9
Data source: Hershey September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Hershey Compares to Other Months

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

September and January present strikingly different weather conditions. In September, temperatures range from a mild 5°C (41°F) at night to a warm average of 21°C (69°F) during the day, peaking at a sweltering 34°C (94°F). This month experiences significant rainfall, totaling 113 mm (4.5 in) over about 10 days, with humidity levels at 66%. In contrast, January brings a stark chill, with temperatures dropping to a minimum of -16°C (4°F) and an average of just 1°C (34°F), reaching a maximum of 20°C (68°F). Precipitation decreases to 68 mm (2.7 in) across approximately 8 days, while humidity rises to a notable 87%. The differences in temperature and humidity between these months create distinctly contrasting climates. For specific weather details during January, you can check Hershey weather in January.

September and February present striking contrasts in weather conditions. In September, temperatures range from a mild 5°C (41°F) at night to a warm 34°C (94°F) during the day, with an average of 21°C (69°F). This month experiences around 113 mm (4.5 in) of rainfall over about 10 days, coupled with a moderate humidity level of 66%.

In contrast, February is characterized by much colder conditions, with temperatures plummeting to a minimum of -17°C (2°F) and an average of only 3°C (37°F). Although the maximum temperature can reach a comfortable 27°C (81°F), the month sees significant humidity at 85% and nearly as much precipitation, totaling 104 mm (4.1 in) over 12 days. For a deeper dive into February weather specifics, you can visit Hershey weather in February.

In comparing the weather of September and March, one can notice striking contrasts. September typically boasts warmer temperatures, with an average of 21°C (69°F) and highs reaching up to 34°C (94°F), while March's temperatures are considerably cooler, averaging only 6°C (43°F) and peaking at 25°C (78°F). Additionally, September experiences moderate precipitation with around 113 mm (4.5 in) over 10 days, whereas March has slightly less rain at 97 mm (3.8 in) but more humid conditions, registering a humidity level of 85%. For a detailed look at the weather specifics in March, check out Hershey weather in March.

September and April present distinct weather patterns that reflect the transition between summer and autumn in September and the awakening of spring in April. In September, temperatures range from a comfortable minimum of 5°C (41°F) to a warm maximum of 34°C (94°F), with an average temperature of 21°C (69°F). Despite experiencing substantial humidity at 66%, it still enjoys relatively lower precipitation with 113 mm (4.5 in) over 10 days.

Conversely, April features cooler temperatures, with a minimum of -3°C (28°F) and an average of 12°C (53°F), reaching up to a maximum of 30°C (87°F). This month experiences slightly less precipitation at 106 mm (4.2 in) but over more days, totaling 12. The humidity in April is higher at 83%, contributing to a more damp atmosphere. For more specific insights on April weather in Hershey, you can refer to Hershey weather in April.

When comparing the weather in September and May, notable differences emerge. September experiences a wider temperature range, with minimums reaching 5°C (41°F) and maximums hitting 34°C (94°F), while May sees temperatures fluctuate between 0°C (33°F) and 33°C (92°F). Both months feature considerable precipitation, with September recording 113 mm (4.5 in) over approximately 10 days, while May has a slightly higher total of 125 mm (4.9 in) spread across 14 days. Additionally, humidity is generally higher in May at 75%, compared to 66% in September. For more detailed insights, check out Hershey weather in May.

When comparing the weather between September and June, we see some notable differences. In September, temperatures range from a minimum of 5°C (41°F) to a maximum of 34°C (94°F), with an average of 21°C (69°F). The month receives about 113 mm (4.5 in) of precipitation over approximately 10 days, resulting in a humidity level of 66%. Conversely, June experiences slightly milder temperatures, with a minimum of 9°C (48°F), an average of 22°C (73°F), and a high of 35°C (95°F). Precipitation in June totals around 95 mm (3.7 in) over 12 days, accompanied by a higher humidity of 73%. This comparison highlights that while both months can be warm, September tends to be drier with lower humidity compared to the wetter and more humid conditions in June. For more detailed weather insights, visit Hershey weather in June.

September weather tends to be milder compared to July, with average temperatures ranging from a minimum of 5°C (41°F) to a maximum of 34°C (94°F), making for pleasant days. In contrast, July features higher temperatures, with a minimum of 14°C (58°F) and a maximum reaching 37°C (99°F), often resulting in hotter summer days. Both months experience significant rainfall, with September receiving about 113 mm (4.5 in) over approximately 10 days, slightly less than July's 136 mm (5.4 in) spread over 12 days. Humidity remains comparable, with September at 66% and July slightly lower at 65%. For a more detailed look at July weather, you can visit Hershey weather in July.

In comparing the weather of September and August, September tends to be cooler, with minimum temperatures dropping to 5°C (41°F), an average of 21°C (69°F), and maximums reaching 34°C (94°F). In contrast, August boasts warmer nights, with minimums around 13°C (56°F) and a higher average temperature of 24°C (76°F), peaking at 35°C (95°F). Both months experience substantial rainfall, with September receiving 113 mm (4.5 in) over about 10 days, while August sees slightly more precipitation at 122 mm (4.8 in) across 14 days. Additionally, humidity levels in September average at 66%, slightly higher than August's 62%. For those interested in exploring more about August weather specifics, you can check Hershey weather in August.

September and October exhibit notable differences in weather patterns, although both months can experience high temperatures. In September, temperatures range from a cool minimum of 5°C (41°F) to an average of 21°C (69°F) and can peak at 34°C (94°F). Conversely, October sees lower averages with temperatures ranging from a minimum of 2°C (35°F) and an average of 15°C (59°F), while still reaching highs of 34°C (93°F).

Precipitation levels in September are slightly higher at 113 mm (4.5 in) over 10 days, compared to 106 mm (4.2 in) in October, which also has the same number of rainy days. Additionally, humidity increases in October, rising to 79% from September’s 66%, contributing to a more damp and cooler feel as the month progresses. For more details on October weather, you can check out Hershey weather in October.

September typically experiences warmer temperatures, with averages around 21°C (69°F) and maximums reaching up to 34°C (94°F), making it a pleasant month for outdoor activities. In contrast, November sees a significant drop in temperatures, averaging only 7°C (45°F) and with lows dipping to -7°C (20°F), which heralds the onset of winter. While September has a higher humidity level of 66% and more rainfall (113 mm over 10 days), November experiences increased humidity at 87%, although it has less precipitation overall (90 mm over 8 days). For a detailed look at weather patterns during this month, you can check Hershey weather in November.

September and December present strikingly different weather conditions. In September, temperatures range from a mild minimum of 5°C (41°F) to a warm maximum of 34°C (94°F), with an average of 21°C (69°F). This month is characterized by relatively high humidity at 66% and a total precipitation of 113 mm (4.5 in) spread over 10 days. In contrast, December sees much colder temperatures, with lows plunging to -12°C (11°F) and an average temperature of just 3°C (38°F). The maximum temperature in December reaches a mere 18°C (64°F). Additionally, while precipitation decreases to 92 mm (3.6 in) over the same number of rainy days, humidity rises to 85%. The stark differences highlight a transition from the warmth of early fall to the chill of winter. For more details, see Hershey weather in December.

Compare Hershey's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Hershey

As September rolls in, Hershey experiences a noteworthy transition in weather, capturing the essence of early autumn. The month showcases a pleasing blend of warm days and cooler nights, offering a delightful respite compared to the sweltering summer months. While temperatures can still reach highs reminiscent of summer, the refreshing drop at night introduces a cozy ambiance. Additionally, September brings a moderate amount of rainfall and a touch of humidity, setting the stage for vibrant fall foliage. For a deeper look into how September fits into the broader climate patterns, explore our detailed insights at Hershey Climate.