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September Weather in Robert Lee, United States

Last updated: June 24, 2025

In Robert Lee, United States, the average temperature in September hovers around 25°C (77°F), with a minimum of 7°C (45°F) and a maximum that can soar to 39°C (102°F). Expect about 61 mm (2.4 in) of precipitation spread across 6 days, contributing to an average humidity of 67%. Perfect for those who enjoy a climate that offers both warmth and a hint of refreshing rain!

September Temperature in Robert Lee

In September in Robert Lee, the average temperature is 25°C (77°F). Maximum can reach 39°C (102°F) and minimum can be as low as 7°C (45°F). It's a great time for travelers to enjoy warm days while being prepared for cooler evenings.

September Weather in Robert Lee: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Robert Lee, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Robert Lee, September typically has an average temperature of 25°C (77°F), with highs reaching up to 39°C (102°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec454859657581848477665550
Data source: Temperature data for Robert Lee 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 Robert Lee

In Robert Lee in September, the total precipitation amount is 61 mm (2.4 in) spread over a period of 6 days.

September Precipitation Trends in Robert Lee

The chart displays monthly precipitation patterns in Robert Lee, 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 Robert Lee, September typically receives around 61 mm (2.4 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec262353618050234261692425
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Robert Lee

In Robert Lee in September, humidity is 67%. With an average temperature of 25°C (77°F), this humidity feels like traveling through a warm, heavy blanket, making outdoor activities feel more strenuous and sticky than usual.

September Average Humidity in Robert Lee

This chart illustrates the average monthly humidity levels in Robert Lee, 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 Robert Lee is approximately 67%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec74%74%69%70%77%76%66%60%67%72%84%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Robert Lee

In Robert Lee in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Robert Lee.

Maximum UV Index Levels in Robert Lee for September

The chart shows the monthly maximum UV Index (UVI) for Robert Lee 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 Robert Lee typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec579111212121111864
Data source: Robert Lee 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 Robert Lee Compares to Other Months

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

This table compares monthly weather conditions in Robert Lee, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (46°F)26 mm (1.0 inches)74%moderate
February Weather9°C (48°F)23 mm (0.9 inches)74%high
March Weather15°C (60°F)53 mm (2.1 inches)68%very high
April Weather19°C (66°F)61 mm (2.4 inches)70%extreme
May Weather24°C (75°F)80 mm (3.2 inches)77%extreme
June Weather27°C (82°F)49 mm (1.9 inches)76%extreme
July Weather29°C (85°F)23 mm (0.9 inches)66%extreme
August Weather29°C (84°F)42 mm (1.6 inches)60%extreme
September Weather25°C (77°F)61 mm (2.4 inches)67%extreme
October Weather19°C (67°F)69 mm (2.7 inches)72%very high
November Weather13°C (55°F)24 mm (0.9 inches)83%high
December Weather10°C (50°F)25 mm (1.0 inches)85%moderate

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