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September Weather in Greenwood Lake, United States

Last updated: June 24, 2025

In September, the average temperature in Greenwood Lake, United States hovers around 19°C (67°F). Expect temperatures to range from a cool 5°C (41°F) to a warm 33°C (91°F). With an average humidity of 68%, you'll want to be prepared for the weather. Be mindful of the 119 mm (4.7 in) of precipitation expected over 11 days, making it a month to pack accordingly!

September Temperature in Greenwood Lake

In September, in Greenwood Lake, the average temperature is 19°C (67°F). Maximums can reach 33°C (91°F) and minimums can be as low as 5°C (41°F). This diverse range of temperatures makes Greenwood Lake an ideal destination for travelers seeking a mix of warm days and cooler evenings.

September Weather in Greenwood Lake: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Greenwood Lake, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Greenwood Lake, September typically has an average temperature of 19°C (67°F), with highs reaching up to 33°C (91°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec313439506069757367574335
Data source: Temperature data for Greenwood Lake 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 Greenwood Lake

In Greenwood Lake in September, the total precipitation amount is 119 mm (4.7 in), which occurs over the course of 11 days.

September Precipitation Trends in Greenwood Lake

The chart displays monthly precipitation patterns in Greenwood Lake, 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 Greenwood Lake, September typically receives around 119 mm (4.7 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec7097911151279914412711914489104
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Greenwood Lake

In Greenwood Lake in September, humidity is 68%. With an average temperature of 19°C (67°F), this humidity feels like a warm, enveloping blanket, making travel pleasant yet slightly muggy, which can be refreshing while exploring but may require occasional breaks to stay comfortable.

September Average Humidity in Greenwood Lake

This chart illustrates the average monthly humidity levels in Greenwood Lake, 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 Greenwood Lake is approximately 68%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%81%78%70%69%62%65%68%74%82%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Greenwood Lake

In Greenwood Lake 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 Greenwood Lake.

Maximum UV Index Levels in Greenwood Lake for September

The chart shows the monthly maximum UV Index (UVI) for Greenwood Lake 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 Greenwood Lake typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356810101098642
Data source: Greenwood Lake 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 Greenwood Lake Compares to Other Months

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

This table compares monthly weather conditions in Greenwood Lake, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)70 mm (2.8 inches)84%moderate
February Weather1°C (34°F)97 mm (3.8 inches)82%moderate
March Weather4°C (39°F)91 mm (3.6 inches)81%high
April Weather10°C (50°F)115 mm (4.5 inches)78%very high
May Weather15°C (60°F)127 mm (5.0 inches)69%very high
June Weather21°C (69°F)99 mm (3.9 inches)69%very high
July Weather24°C (75°F)144 mm (5.7 inches)62%very high
August Weather23°C (73°F)127 mm (5.0 inches)65%very high
September Weather19°C (67°F)119 mm (4.7 inches)68%very high
October Weather14°C (57°F)144 mm (5.7 inches)74%high
November Weather6°C (43°F)89 mm (3.5 inches)82%moderate
December Weather2°C (35°F)104 mm (4.1 inches)80%low

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