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September Weather in Rancho Alegre, United States

Last updated: June 24, 2025

In September, the average temperature in Rancho Alegre, United States is a warm 28°C (83°F). Expect a range that can dip to a cool 15°C (59°F) and soar to a scorching 39°C (103°F). Be prepared for approximately 107 mm (4.2 in) of precipitation spread over 13 days, and enjoy the balmy atmosphere with an average humidity of 73%.

September Temperature in Rancho Alegre

In September, in Rancho Alegre, the average temperature is 28°C (83°F). Maximum temperatures can reach 39°C (103°F), while minimums can drop to as low as 15°C (59°F). Be sure to pack appropriately to enjoy both the warm days and cooler evenings during your visit!

September Weather in Rancho Alegre: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Rancho Alegre, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rancho Alegre, September typically has an average temperature of 28°C (83°F), with highs reaching up to 39°C (103°F) and lows dropping to around 15°C (59°F).
JanFebMarAprMayJunJulAugSepOctNovDec586169748184858682766661
Data source: Temperature data for Rancho Alegre 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 Rancho Alegre

In Rancho Alegre in September, the total precipitation amount is 107 mm (4.2 in) distributed over a span of 13 days.

September Precipitation Trends in Rancho Alegre

The chart displays monthly precipitation patterns in Rancho Alegre, 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 Rancho Alegre, September typically receives around 107 mm (4.2 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec30246041991059461107453540
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Rancho Alegre

In Rancho Alegre in September, humidity is 73%. With an average temperature of 28°C (83°F), this humidity feels like a thick blanket enveloping your skin, making travel feel heavy and stifling, often requiring frequent breaks in shaded or air-conditioned areas to stay comfortable.

September Average Humidity in Rancho Alegre

This chart illustrates the average monthly humidity levels in Rancho Alegre, 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 Rancho Alegre is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%79%76%77%80%73%66%65%73%76%80%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Rancho Alegre

In Rancho Alegre 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 Rancho Alegre.

Maximum UV Index Levels in Rancho Alegre for September

The chart shows the monthly maximum UV Index (UVI) for Rancho Alegre 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 Rancho Alegre typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec6810111112121211975
Data source: Rancho Alegre 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 Rancho Alegre Compares to Other Months

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

This table compares monthly weather conditions in Rancho Alegre, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather15°C (59°F)30 mm (1.2 inches)83%high
February Weather16°C (62°F)24 mm (0.9 inches)79%very high
March Weather21°C (70°F)59 mm (2.3 inches)76%very high
April Weather24°C (75°F)41 mm (1.6 inches)77%extreme
May Weather27°C (81°F)99 mm (3.9 inches)80%extreme
June Weather29°C (84°F)105 mm (4.1 inches)73%extreme
July Weather30°C (86°F)94 mm (3.7 inches)66%extreme
August Weather30°C (86°F)61 mm (2.4 inches)65%extreme
September Weather28°C (83°F)107 mm (4.2 inches)73%extreme
October Weather24°C (76°F)45 mm (1.8 inches)76%very high
November Weather19°C (67°F)35 mm (1.4 inches)80%high
December Weather16°C (61°F)40 mm (1.6 inches)86%moderate

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