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September Weather in Thayer, United States

Last updated: June 24, 2025

The average temperature in Thayer, United States during September is a pleasant 23°C (74°F). However, be prepared for a range, as minimums can drop to 8°C (47°F) while highs can soar to 36°C (97°F). Expect about 70 mm (2.8 in) of precipitation over 6 days, with an average humidity of 68%.

September Temperature in Thayer

In September in Thayer, the average temperature is 23°C (74°F). The maximum can reach 36°C (97°F) and the minimum can be as low as 8°C (47°F). This makes it an ideal destination for travelers seeking warm weather, but be prepared for cooler evenings.

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

The chart illustrates September temperature patterns in Thayer, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Thayer, September typically has an average temperature of 23°C (74°F), with highs reaching up to 36°C (97°F) and lows dropping to around 8°C (47°F).
JanFebMarAprMayJunJulAugSepOctNovDec374151576876817874614743
Data source: Temperature data for Thayer 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 Thayer

In Thayer in September, the precipitation amount is 70 mm (2.8 in) over the course of 6 days.

September Precipitation Trends in Thayer

The chart displays monthly precipitation patterns in Thayer, 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 Thayer, September typically receives around 70 mm (2.8 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec871131451711788479105701168086
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Thayer

In Thayer in September, humidity is 68%. With an average temperature of 23°C (74°F), this humidity feels like a warm embrace, making traveling quite uncomfortable if you're not prepared. The air is thick and muggy, leaving you yearning for a cool breeze and frequent breaks in the shade.

September Average Humidity in Thayer

This chart illustrates the average monthly humidity levels in Thayer, 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 Thayer is approximately 68%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%81%80%80%83%83%76%69%68%72%83%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Thayer

In Thayer 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 Thayer.

Maximum UV Index Levels in Thayer for September

The chart shows the monthly maximum UV Index (UVI) for Thayer 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 Thayer typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36810101111109753
Data source: Thayer 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 Thayer Compares to Other Months

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

This table compares monthly weather conditions in Thayer, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)87 mm (3.4 inches)83%moderate
February Weather5°C (41°F)113 mm (4.4 inches)81%high
March Weather10°C (51°F)145 mm (5.7 inches)80%very high
April Weather14°C (57°F)171 mm (6.7 inches)80%very high
May Weather20°C (68°F)178 mm (7.0 inches)83%very high
June Weather25°C (76°F)84 mm (3.3 inches)83%extreme
July Weather27°C (81°F)79 mm (3.1 inches)76%extreme
August Weather25°C (78°F)105 mm (4.1 inches)69%very high
September Weather23°C (74°F)70 mm (2.8 inches)68%very high
October Weather16°C (61°F)116 mm (4.6 inches)72%high
November Weather8°C (48°F)80 mm (3.1 inches)83%moderate
December Weather6°C (43°F)86 mm (3.4 inches)86%moderate

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