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September Weather in Lyons Falls, United States

Last updated: June 24, 2025

In Lyons Falls, United States, the average temperature in September is a comfortable 15°C (59°F). However, you can experience a range with minimums dropping as low as -2°C (29°F) and maximums soaring up to 30°C (87°F). Expect precipitation of around 86 mm (3.4 in) spread over 10 days, alongside an average humidity of 78% to keep the air feeling fresh and crisp.

September Temperature in Lyons Falls

In September in Lyons Falls, the average temperature is 15°C (59°F), with maximums reaching up to 30°C (87°F) and minimums dropping as low as -2°C (29°F). This variability means travelers should pack for both warm and cool weather to fully enjoy their visit.

September Weather in Lyons Falls: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Lyons Falls, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lyons Falls, September typically has an average temperature of 15°C (59°F), with highs reaching up to 30°C (87°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec192329425563686659493325
Data source: Temperature data for Lyons Falls 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 Lyons Falls

In Lyons Falls in September, the precipitation amount is 86 mm (3.4 in) over the course of 10 days.

September Precipitation Trends in Lyons Falls

The chart displays monthly precipitation patterns in Lyons Falls, 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 Lyons Falls, September typically receives around 86 mm (3.4 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec1131129712912712318314786175136123
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Lyons Falls

In Lyons Falls in September, humidity is 78%. With an average temperature of 15°C (59°F), this humidity feels like a warm, enveloping blanket that clings to your skin, making outdoor activities a bit more tiring and requiring frequent breaks for hydration as you explore the area.

September Average Humidity in Lyons Falls

This chart illustrates the average monthly humidity levels in Lyons Falls, 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 Lyons Falls is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%87%88%82%79%78%76%78%84%89%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Lyons Falls

In Lyons Falls in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Lyons Falls.

Maximum UV Index Levels in Lyons Falls for September

The chart shows the monthly maximum UV Index (UVI) for Lyons Falls 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 Lyons Falls typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3468910998632
Data source: Lyons Falls 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 Lyons Falls Compares to Other Months

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

This table compares monthly weather conditions in Lyons Falls, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-7°C (19°F)113 mm (4.5 inches)90%moderate
February Weather-5°C (23°F)112 mm (4.4 inches)90%moderate
March Weather-2°C (29°F)97 mm (3.8 inches)87%high
April Weather5°C (42°F)129 mm (5.1 inches)88%very high
May Weather13°C (55°F)127 mm (5.0 inches)82%very high
June Weather17°C (63°F)123 mm (4.9 inches)79%very high
July Weather20°C (69°F)183 mm (7.2 inches)78%very high
August Weather19°C (66°F)147 mm (5.8 inches)76%very high
September Weather15°C (59°F)86 mm (3.4 inches)78%very high
October Weather9°C (49°F)175 mm (6.9 inches)84%high
November Weather1°C (34°F)136 mm (5.4 inches)89%moderate
December Weather-4°C (25°F)123 mm (4.9 inches)86%low

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