nomadseason

September Weather in Patterson, United States

Last updated: June 24, 2025

In September, the average temperature in Patterson, United States is a warm 26°C (79°F). Expect a range from a cool 13°C (55°F) to a scorching 39°C (103°F). Prepare for some rain, with an average precipitation of 121 mm (4.8 in) over 13 days. With humidity levels at 83%, it's sure to feel quite tropical!

September Temperature in Patterson

In September in Patterson, the average temperature is 26°C (79°F). Maximums can reach 39°C (103°F), while minimums can dip as low as 13°C (55°F). This diverse temperature range makes Patterson an ideal destination for travelers seeking both warmth and cool respite.

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

The chart illustrates September temperature patterns in Patterson, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Patterson, September typically has an average temperature of 26°C (79°F), with highs reaching up to 39°C (103°F) and lows dropping to around 13°C (55°F).
JanFebMarAprMayJunJulAugSepOctNovDec535962687680828279725955
Data source: Temperature data for Patterson generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Patterson

In Patterson in September, the total precipitation amount is 121 mm (4.8 in) over the course of 13 days.

September Precipitation Trends in Patterson

The chart displays monthly precipitation patterns in Patterson, 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 Patterson, September typically receives around 121 mm (4.8 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec62836772771161491241216953120
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Patterson

In Patterson in September, humidity is 83%. With an average temperature of 26°C (79°F), this humidity feels like a heavy blanket enveloping you, making travel an exercise in endurance as the air clings to your skin and saps your energy.

September Average Humidity in Patterson

This chart illustrates the average monthly humidity levels in Patterson, 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 Patterson is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%79%78%73%72%74%82%82%83%79%82%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Patterson

In Patterson in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Patterson.

Maximum UV Index Levels in Patterson for September

The chart shows the monthly maximum UV Index (UVI) for Patterson 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 Patterson typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec579101111111110864
Data source: Patterson 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 Patterson Compares to Other Months

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

This table compares monthly weather conditions in Patterson, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (53°F)62 mm (2.4 inches)84%moderate
February Weather15°C (59°F)83 mm (3.3 inches)79%high
March Weather17°C (63°F)67 mm (2.6 inches)78%very high
April Weather20°C (68°F)72 mm (2.8 inches)72%very high
May Weather24°C (76°F)77 mm (3.0 inches)72%extreme
June Weather26°C (80°F)116 mm (4.6 inches)74%extreme
July Weather28°C (82°F)149 mm (5.9 inches)82%extreme
August Weather28°C (82°F)124 mm (4.9 inches)82%extreme
September Weather26°C (79°F)121 mm (4.8 inches)83%very high
October Weather22°C (72°F)69 mm (2.7 inches)79%very high
November Weather15°C (59°F)53 mm (2.1 inches)82%high
December Weather13°C (55°F)120 mm (4.7 inches)85%moderate

Compare Patterson's Climate with Cities Worldwide