September Weather in Saint Louis Park, United States

Last updated: June 24, 2025

In September, the average temperature in Saint Louis Park, United States is a pleasant 18°C (64°F). However, temperatures can vary significantly, with minimums dipping to 2°C (36°F) and maximums soaring to 33°C (91°F). Expect 115 mm (4.5 in) of precipitation spread over 10 days, coupled with a higher average humidity of 81%, adding a touch of summer's embrace to your experience.

September Temperature in Saint Louis Park

In September in Saint Louis Park, the average temperature is 18°C (64°F). Maximums can reach 33°C (91°F), and minimums can be as low as 2°C (36°F). This makes Saint Louis Park a great destination for travelers looking to experience a range of temperatures, from warm days to cooler nights.

September Weather in Saint Louis Park: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Saint Louis Park, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Louis Park, September typically has an average temperature of 18°C (64°F), with highs reaching up to 33°C (91°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec161733435971757164483323
Data source: Temperature data for Saint Louis Park 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 Saint Louis Park

In Saint Louis Park in September, the precipitation amount is 115 mm (4.5 in) over a span of 10 days.

September Precipitation Trends in Saint Louis Park

The chart displays monthly precipitation patterns in Saint Louis Park, 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 Saint Louis Park, September typically receives around 115 mm (4.5 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec2733568712686104136115983550
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Saint Louis Park

In Saint Louis Park in September, humidity is 81%. With an average temperature of 18°C (64°F), this humidity feels like a warm embrace, making travel both refreshing and slightly stifling at the same time.

September Average Humidity in Saint Louis Park

This chart illustrates the average monthly humidity levels in Saint Louis Park, 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 Saint Louis Park is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%90%85%84%78%80%81%81%81%84%88%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Saint Louis Park

In Saint Louis Park in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Saint Louis Park.

Maximum UV Index Levels in Saint Louis Park for September

The chart shows the monthly maximum UV Index (UVI) for Saint Louis Park 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 Saint Louis Park typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2457810997532
Data source: Saint Louis Park 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 Saint Louis Park Compares to Other Months

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

This table compares monthly weather conditions in Saint Louis Park, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (17°F)27 mm (1.0 inches)87%low
February Weather-8°C (17°F)33 mm (1.3 inches)90%moderate
March Weather0°C (33°F)56 mm (2.2 inches)85%moderate
April Weather6°C (43°F)87 mm (3.4 inches)84%high
May Weather15°C (59°F)126 mm (5.0 inches)78%very high
June Weather22°C (72°F)86 mm (3.4 inches)80%very high
July Weather24°C (75°F)104 mm (4.1 inches)81%very high
August Weather22°C (71°F)135 mm (5.3 inches)81%very high
September Weather18°C (64°F)115 mm (4.5 inches)81%high
October Weather9°C (49°F)98 mm (3.9 inches)84%moderate
November Weather1°C (33°F)35 mm (1.4 inches)88%moderate
December Weather-5°C (23°F)50 mm (2.0 inches)84%low

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