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September Weather in Hollis, United States

Last updated: June 24, 2025

In September, the average temperature in Hollis, United States hovers around 24°C (76°F). However, temperatures can vary significantly, dipping to a chilly 7°C (45°F) and soaring up to a scorching 38°C (101°F). Visitors should also be prepared for some rain, as the area experiences an average precipitation of 72 mm (2.8 in) over 6 days. With an average humidity of 72%, it’s advisable to stay hydrated and enjoy the climate to the fullest!

September Temperature in Hollis

In September in Hollis, the average temperature is 24°C (76°F). Maximum temperatures can reach 38°C (101°F), while minimum temperatures can drop as low as 7°C (45°F). Travelers should prepare for warm days and cooler nights, making layering essential for comfort.

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

The chart illustrates September temperature patterns in Hollis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hollis, September typically has an average temperature of 24°C (76°F), with highs reaching up to 38°C (101°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec404254617180848275625144
Data source: Temperature data for Hollis 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 Hollis

In Hollis in September, the total precipitation amount is 72 mm (2.8 in) over the course of 6 days.

September Precipitation Trends in Hollis

The chart displays monthly precipitation patterns in Hollis, 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 Hollis, September typically receives around 72 mm (2.8 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec2819624910479303372731723
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Hollis

In Hollis in September humidity is 72%. With an average temperature of 24°C (76°F), this humidity feels like a warm, muggy embrace that can make outdoor activities a bit uncomfortable, so travelers should stay hydrated and plan for frequent breaks in the shade.

September Average Humidity in Hollis

This chart illustrates the average monthly humidity levels in Hollis, 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 Hollis is approximately 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%76%64%70%78%81%82%78%72%73%81%81%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Hollis

In Hollis in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Hollis.

Maximum UV Index Levels in Hollis for September

The chart shows the monthly maximum UV Index (UVI) for Hollis 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 Hollis typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111121110754
Data source: Hollis 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 Hollis Compares to Other Months

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

This table compares monthly weather conditions in Hollis, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (40°F)28 mm (1.1 inches)75%moderate
February Weather5°C (42°F)19 mm (0.8 inches)76%high
March Weather12°C (54°F)62 mm (2.5 inches)64%very high
April Weather16°C (61°F)49 mm (1.9 inches)70%very high
May Weather22°C (71°F)104 mm (4.1 inches)78%extreme
June Weather27°C (80°F)79 mm (3.1 inches)81%extreme
July Weather29°C (84°F)30 mm (1.2 inches)82%extreme
August Weather28°C (82°F)33 mm (1.3 inches)78%extreme
September Weather24°C (76°F)72 mm (2.8 inches)72%very high
October Weather17°C (62°F)73 mm (2.9 inches)73%high
November Weather10°C (51°F)17 mm (0.7 inches)80%moderate
December Weather7°C (45°F)23 mm (0.9 inches)81%moderate

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