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September Weather in Fountain Lake, United States

Last updated: June 24, 2025

In Fountain Lake, United States, the average temperature in September is a pleasant 24°C (76°F). However, you can expect a range, with minimums dipping to 10°C (50°F) and maximums soaring to 38°C (100°F). During this month, precipitation averages around 82 mm (3.2 in) over the course of 7 days, and the average humidity sits at 59%.

September Temperature in Fountain Lake

In September in Fountain Lake, the average temperature is 24°C (76°F). The maximum can reach 38°C (100°F) and the minimum can be as low as 10°C (50°F). This makes Fountain Lake an ideal destination for travelers seeking warm weather while still having the option for cooler evenings.

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

The chart illustrates September temperature patterns in Fountain Lake, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fountain Lake, September typically has an average temperature of 24°C (76°F), with highs reaching up to 38°C (100°F) and lows dropping to around 10°C (50°F).
JanFebMarAprMayJunJulAugSepOctNovDec434555617178818076645147
Data source: Temperature data for Fountain 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 Fountain Lake

In Fountain Lake in September, the precipitation amount is 82 mm (3.2 in) over the course of 7 days.

September Precipitation Trends in Fountain Lake

The chart displays monthly precipitation patterns in Fountain 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 Fountain Lake, September typically receives around 82 mm (3.2 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec9115415616216811399117829379130
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Fountain Lake

In Fountain Lake in September humidity is 59%. With an average temperature of 24°C (76°F), this humidity feels like a comfortable, refreshing embrace, making it ideal for leisurely strolls and outdoor explorations.

September Average Humidity in Fountain Lake

This chart illustrates the average monthly humidity levels in Fountain 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 Fountain Lake is approximately 59%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%77%78%82%81%75%61%59%69%82%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Fountain Lake

In Fountain Lake 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 Fountain Lake.

Maximum UV Index Levels in Fountain Lake for September

The chart shows the monthly maximum UV Index (UVI) for Fountain 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 Fountain Lake typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109754
Data source: Fountain 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 Fountain Lake Compares to Other Months

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

This table compares monthly weather conditions in Fountain Lake, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)91 mm (3.6 inches)82%moderate
February Weather7°C (46°F)154 mm (6.1 inches)79%high
March Weather13°C (56°F)156 mm (6.2 inches)77%very high
April Weather16°C (61°F)162 mm (6.4 inches)78%very high
May Weather21°C (71°F)168 mm (6.6 inches)82%extreme
June Weather26°C (79°F)112 mm (4.4 inches)81%extreme
July Weather27°C (82°F)99 mm (3.9 inches)75%extreme
August Weather26°C (80°F)117 mm (4.6 inches)61%very high
September Weather24°C (76°F)82 mm (3.2 inches)59%very high
October Weather18°C (64°F)93 mm (3.7 inches)69%high
November Weather11°C (52°F)79 mm (3.1 inches)82%moderate
December Weather9°C (48°F)130 mm (5.1 inches)87%moderate

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