September Weather in San Ardo, United States

Last updated: June 24, 2025

In San Ardo, United States, the average temperature in September hovers around 22°C (72°F), making it a pleasant time to visit. Be prepared for temperature fluctuations; the minimum can drop to 7°C (45°F) while highs can reach a scorching 41°C (106°F). Despite these extremes, the precipitation remains low at only 1 mm (0.0 in) over a span of 0 days, ensuring plenty of sunshine. Plus, with an average humidity of 70%, the weather remains comfortably warm.

September Temperature in San Ardo

In September in San Ardo, the average temperature is 22°C (72°F). Maximum temperatures can reach 41°C (106°F), while minimums can drop to as low as 7°C (45°F). Be prepared for a wide range of temperatures when planning your travels.

September Weather in San Ardo: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in San Ardo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Ardo, September typically has an average temperature of 22°C (72°F), with highs reaching up to 41°C (106°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec505153596471757572655650
Data source: Temperature data for San Ardo 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 San Ardo

In San Ardo in September, the precipitation amount is 1 mm (0.0 in) during a span of 0 days.

September Precipitation Trends in San Ardo

The chart displays monthly precipitation patterns in San Ardo, 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 San Ardo, September typically receives around 1 mm (0.0 inches) of precipitation spread over approximately 0 days.
JanFebMarAprMayJunJulAugSepOctNovDec9869762110000182462
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Ardo

In San Ardo in September, humidity is 70%. With an average temperature of 22°C (72°F), this humidity feels like a warm embrace, making travel slightly uncomfortable but still bearable; the air is thick and can leave you feeling sticky, so staying hydrated and taking frequent breaks is essential for enjoying your adventures.

September Average Humidity in San Ardo

This chart illustrates the average monthly humidity levels in San Ardo, 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 San Ardo is approximately 70%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%83%80%76%75%74%75%72%70%70%74%77%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Ardo

In San Ardo 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 San Ardo.

Maximum UV Index Levels in San Ardo for September

The chart shows the monthly maximum UV Index (UVI) for San Ardo 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 San Ardo typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec4589111212119753
Data source: San Ardo 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 San Ardo Compares to Other Months

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

This table compares monthly weather conditions in San Ardo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (50°F)98 mm (3.9 inches)80%moderate
February Weather10°C (51°F)69 mm (2.7 inches)83%moderate
March Weather12°C (54°F)76 mm (3.0 inches)80%very high
April Weather15°C (60°F)21 mm (0.8 inches)76%very high
May Weather18°C (64°F)9 mm (0.4 inches)75%extreme
June Weather22°C (71°F)0 mm (0.0 inches)74%extreme
July Weather24°C (75°F)0 mm (0.0 inches)75%extreme
August Weather24°C (75°F)0 mm (0.0 inches)72%extreme
September Weather22°C (72°F)1 mm (0.0 inches)70%very high
October Weather18°C (65°F)8 mm (0.3 inches)70%high
November Weather13°C (56°F)24 mm (0.9 inches)74%moderate
December Weather10°C (50°F)62 mm (2.5 inches)76%moderate

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