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September Weather in Assumption, United States

Last updated: June 24, 2025

In September, the average temperature in Assumption, United States hovers around 22°C (71°F), making it a pleasant time to visit. However, be prepared for a temperature range that can dip to 6°C (43°F) or rise to a steamy 34°C (93°F). Rainfall is moderate, with an accumulation of about 65 mm (2.6 in) over approximately 6 days. Don't forget to anticipate the average humidity level of 79%, adding a touch of tropical feel to your adventures!

September Temperature in Assumption

In September in Assumption, the average temperature is 22°C (71°F). Maximum temperatures can reach 34°C (93°F), while minimums can drop as low as 6°C (43°F). This makes it a great time to explore Assumption with a diverse range of weather conditions to suit different activities.

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

The chart illustrates September temperature patterns in Assumption, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Assumption, September typically has an average temperature of 22°C (71°F), with highs reaching up to 34°C (93°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec303344536675787471584237
Data source: Temperature data for Assumption 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 Assumption

In Assumption, in September, the precipitation amount is 65 mm (2.6 in) over a period of 6 days.

September Precipitation Trends in Assumption

The chart displays monthly precipitation patterns in Assumption, 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 Assumption, September typically receives around 65 mm (2.6 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec7877130137145106112115651168156
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Assumption

In Assumption in September humidity is 79%. With an average temperature of 22°C (71°F), this humidity feels like a warm, sticky embrace that can make any outdoor adventure quite challenging for traveling; it's advisable to stay hydrated and take breaks in the shade to fully enjoy the sights.

September Average Humidity in Assumption

This chart illustrates the average monthly humidity levels in Assumption, 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 Assumption is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%84%83%80%83%82%83%79%79%88%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Assumption

In Assumption 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 Assumption.

Maximum UV Index Levels in Assumption for September

The chart shows the monthly maximum UV Index (UVI) for Assumption 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 Assumption typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111198643
Data source: Assumption 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 Assumption Compares to Other Months

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

This table compares monthly weather conditions in Assumption, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)78 mm (3.1 inches)84%moderate
February Weather0°C (33°F)77 mm (3.0 inches)82%moderate
March Weather7°C (44°F)130 mm (5.1 inches)84%high
April Weather12°C (53°F)137 mm (5.4 inches)83%very high
May Weather19°C (66°F)145 mm (5.7 inches)80%very high
June Weather24°C (76°F)106 mm (4.2 inches)83%extreme
July Weather25°C (78°F)112 mm (4.4 inches)82%extreme
August Weather24°C (75°F)115 mm (4.5 inches)82%very high
September Weather22°C (71°F)65 mm (2.6 inches)79%very high
October Weather14°C (58°F)116 mm (4.6 inches)79%high
November Weather6°C (42°F)81 mm (3.2 inches)88%moderate
December Weather3°C (37°F)56 mm (2.2 inches)87%moderate

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