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September Weather in Visalia, United States

Last updated: June 24, 2025

In September, the average temperature in Visalia, United States reaches a warm 27°C (80°F). However, temperatures can vary significantly, with a minimum of 11°C (52°F) and soaring up to a scorching 44°C (111°F). Expect minimal rainfall, with only about 2 mm (0.1 in) of precipitation occurring over 0 days. With an average humidity of 42%, it's a great time to enjoy the warm and dry weather!

September Temperature in Visalia

In September in Visalia, the average temperature is 27°C (80°F). Maximum can reach 44°C (111°F) and minimum can be as low as 11°C (52°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Visalia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Visalia, September typically has an average temperature of 27°C (80°F), with highs reaching up to 44°C (111°F) and lows dropping to around 11°C (52°F).
JanFebMarAprMayJunJulAugSepOctNovDec505256637081888780685850
Data source: Temperature data for Visalia 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 Visalia

In Visalia in September, the precipitation amount is 2 mm (0.1 in) during a span of 0 days.

September Precipitation Trends in Visalia

The chart displays monthly precipitation patterns in Visalia, 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 Visalia, September typically receives around 2 mm (0.1 inches) of precipitation spread over approximately 0 days.
JanFebMarAprMayJunJulAugSepOctNovDec868711344301002134278
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Visalia

In Visalia in September humidity is 42%. With an average temperature of 27°C (80°F), this humidity feels like a warm embrace, making for pleasant travels as you explore the sights without feeling overly sticky or uncomfortable.

September Average Humidity in Visalia

This chart illustrates the average monthly humidity levels in Visalia, 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 Visalia is approximately 42%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%85%80%72%58%49%36%30%42%59%78%79%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Visalia

In Visalia 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 Visalia.

Maximum UV Index Levels in Visalia for September

The chart shows the monthly maximum UV Index (UVI) for Visalia 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 Visalia typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3589101111109753
Data source: Visalia 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 Visalia Compares to Other Months

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

This table compares monthly weather conditions in Visalia, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (51°F)86 mm (3.4 inches)82%moderate
February Weather11°C (52°F)87 mm (3.4 inches)85%moderate
March Weather13°C (57°F)113 mm (4.5 inches)80%very high
April Weather17°C (64°F)44 mm (1.7 inches)72%very high
May Weather21°C (71°F)30 mm (1.2 inches)58%very high
June Weather27°C (81°F)1 mm (0.0 inches)49%extreme
July Weather31°C (88°F)0 mm (0.0 inches)36%extreme
August Weather31°C (87°F)0 mm (0.0 inches)30%very high
September Weather27°C (80°F)2 mm (0.1 inches)42%very high
October Weather20°C (68°F)13 mm (0.5 inches)59%high
November Weather14°C (58°F)42 mm (1.7 inches)78%moderate
December Weather10°C (50°F)78 mm (3.1 inches)79%moderate

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