nomadseason

September Weather in Monroe, United States

Last updated: June 24, 2025

In September, the average temperature in Monroe, United States hovers around 26°C (79°F). Expect a comfortable minimum of 12°C (54°F), while heatwaves can push the mercury up to a sizzling 39°C (102°F). With an average humidity of 73%, you’ll also encounter around 88 mm (3.5 in) of precipitation over 8 days. Whether you're soaking up the sun or seeking shelter from the rains, Monroe offers a unique climate experience in September!

September Temperature in Monroe

In September in Monroe, the average temperature is 26°C (79°F). The maximum can reach 39°C (102°F) and the minimum can be as low as 12°C (54°F). Be prepared for a warm climate, with occasional cool evenings, making it an ideal time for both outdoor activities and relaxation.

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 26°C (79°F), with highs reaching up to 39°C (102°F) and lows dropping to around 12°C (54°F).
JanFebMarAprMayJunJulAugSepOctNovDec485261657480838279695552
Data source: Temperature data for Monroe generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
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 88 mm (3.5 in) over the course of 8 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 88 mm (3.5 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec12119714716412912193978813387122
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Monroe

In Monroe in September, humidity is 73%. With an average temperature of 26°C (79°F), this humidity feels like a warm, sticky embrace, making travel slightly uncomfortable as you navigate through the heat with a constant sheen of sweat on your skin.

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 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%80%82%83%80%80%75%73%76%84%88%
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.
JanFebMarAprMayJunJulAugSepOctNovDec47911111212119864
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 Weather9°C (48°F)121 mm (4.8 inches)84%moderate
February Weather11°C (52°F)197 mm (7.8 inches)83%high
March Weather16°C (61°F)147 mm (5.8 inches)80%very high
April Weather18°C (65°F)164 mm (6.5 inches)82%extreme
May Weather23°C (74°F)129 mm (5.1 inches)83%extreme
June Weather27°C (80°F)121 mm (4.8 inches)80%extreme
July Weather28°C (83°F)93 mm (3.7 inches)80%extreme
August Weather28°C (83°F)97 mm (3.8 inches)75%extreme
September Weather26°C (79°F)88 mm (3.5 inches)73%very high
October Weather20°C (69°F)133 mm (5.2 inches)76%very high
November Weather13°C (56°F)87 mm (3.4 inches)84%high
December Weather11°C (52°F)122 mm (4.8 inches)88%moderate

Compare Monroe's Climate with Cities Worldwide