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September Weather in Millcreek, United States

Last updated: June 24, 2025

In September, the average temperature in Millcreek, United States hovers around 16°C (62°F), offering a pleasant climate for outdoor activities. However, be prepared for a range of temperatures, as the minimum can drop to -4°C (25°F) while the maximum can reach up to 33°C (93°F). Expect around 39 mm (1.5 in) of precipitation spread over approximately 5 days, and enjoy an average humidity of 46%—perfect for those who appreciate a balanced atmosphere!

September Temperature in Millcreek

In September in Millcreek, the average temperature is 16°C (62°F). The maximum can reach 33°C (93°F), while the minimum can drop as low as -4°C (25°F). Be prepared for a wide range of temperatures when traveling during this time.

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

The chart illustrates September temperature patterns in Millcreek, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Millcreek, September typically has an average temperature of 16°C (62°F), with highs reaching up to 33°C (93°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec262837425165747161453526
Data source: Temperature data for Millcreek 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 Millcreek

In Millcreek in September, the precipitation amount is 39 mm (1.5 in) spread over a duration of 5 days.

September Precipitation Trends in Millcreek

The chart displays monthly precipitation patterns in Millcreek, 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. In Millcreek, September typically receives around 39 mm (1.5 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec727973746924192639514863
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Millcreek

In Millcreek in September, humidity is 46%. With an average temperature of 16°C (62°F), this humidity feels like a mild and refreshing embrace, making it a comfortable time for traveling as you can explore the sights without feeling overly sticky or fatigued.

September Average Humidity in Millcreek

This chart illustrates the average monthly humidity levels in Millcreek, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Millcreek is approximately 46%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%92%84%75%62%56%44%37%46%67%84%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Millcreek

In Millcreek in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Millcreek.

Maximum UV Index Levels in Millcreek for September

The chart shows the monthly maximum UV Index (UVI) for Millcreek 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. In September, the maximum UV index in Millcreek typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46811111212119653
Data source: Millcreek 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.

How September Weather in Millcreek Compares to Other Months

Weather in Millcreek varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Millcreek, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Millcreek, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (26°F)72 mm (2.8 inches)91%moderate
February Weather-2°C (29°F)79 mm (3.1 inches)92%high
March Weather3°C (37°F)72 mm (2.9 inches)84%very high
April Weather5°C (42°F)74 mm (2.9 inches)74%extreme
May Weather11°C (51°F)69 mm (2.7 inches)62%extreme
June Weather18°C (65°F)24 mm (0.9 inches)56%extreme
July Weather23°C (74°F)19 mm (0.8 inches)44%extreme
August Weather22°C (71°F)26 mm (1.0 inches)37%extreme
September Weather16°C (62°F)39 mm (1.5 inches)46%very high
October Weather7°C (45°F)51 mm (2.0 inches)67%high
November Weather2°C (36°F)48 mm (1.9 inches)84%moderate
December Weather-4°C (26°F)63 mm (2.5 inches)88%moderate

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