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September Weather in Monroe, United States

Last updated: June 24, 2025

The average temperature in Monroe, United States during September is a pleasant 24°C (75°F). However, temperatures can fluctuate, with minimums dipping to 10°C (51°F) and maximums soaring to 36°C (96°F). Expect precipitation of 111 mm (4.4 in) spread over 9 days, accompanied by an average humidity level of 82%.

September Temperature in Monroe

In September in Monroe, the average temperature is 24°C (75°F). The maximum can reach 36°C (96°F), and the minimum can be as low as 10°C (51°F). This pleasant climate makes Monroe an ideal destination for travelers seeking a mix of warmth and cool breezes.

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

The chart illustrates September temperature patterns in Monroe, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Monroe, September typically has an average temperature of 24°C (75°F), with highs reaching up to 36°C (96°F) and lows dropping to around 10°C (51°F).
JanFebMarAprMayJunJulAugSepOctNovDec465156637177807975665349
Data source: Temperature data for Monroe 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 Monroe

In Monroe in September, the precipitation amount is 111 mm (4.4 in) over the course of 9 days.

September Precipitation Trends in Monroe

The chart displays monthly precipitation patterns in Monroe, 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 Monroe, September typically receives around 111 mm (4.4 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec10513811612111111711413111111880134
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Monroe

In Monroe in September, humidity is 82%. With an average temperature of 24°C (75°F), this humidity feels like a warm embrace, making travel feel sticky and heavy on the skin, often requiring more frequent breaks and hydration.

September Average Humidity in Monroe

This chart illustrates the average monthly humidity levels in Monroe, 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 Monroe is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%83%81%81%81%83%81%82%78%86%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Monroe

In Monroe 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 Monroe.

Maximum UV Index Levels in Monroe for September

The chart shows the monthly maximum UV Index (UVI) for Monroe 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 Monroe typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec47910111111109864
Data source: Monroe 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 Monroe Compares to Other Months

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

This table compares monthly weather conditions in Monroe, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (46°F)105 mm (4.1 inches)86%moderate
February Weather11°C (52°F)138 mm (5.4 inches)84%high
March Weather14°C (57°F)116 mm (4.6 inches)83%very high
April Weather17°C (63°F)121 mm (4.8 inches)81%very high
May Weather22°C (72°F)111 mm (4.4 inches)81%extreme
June Weather25°C (77°F)117 mm (4.6 inches)81%extreme
July Weather26°C (80°F)114 mm (4.5 inches)83%extreme
August Weather26°C (79°F)131 mm (5.2 inches)81%very high
September Weather24°C (75°F)111 mm (4.4 inches)82%very high
October Weather19°C (66°F)118 mm (4.7 inches)78%very high
November Weather12°C (53°F)80 mm (3.2 inches)86%high
December Weather9°C (49°F)134 mm (5.3 inches)89%moderate

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