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September Weather in San Miguel, United States

Last updated: June 24, 2025

In September, the average temperature in San Miguel, United States is a comfortable 21°C (70°F). Be prepared for variations, as temperatures can drop to a minimum of 8°C (46°F) and soar up to a sweltering 40°C (104°F). Rainfall is minimal, with an average precipitation of just 1 mm (0.0 in) over 0 days. Despite the warmth, you'll enjoy a pleasant average humidity level of 70%.

September Temperature in San Miguel

In September in San Miguel, the average temperature is 21°C (70°F), with maximums reaching up to 40°C (104°F) and minimums dropping as low as 8°C (46°F). Be sure to pack accordingly, as the weather can vary significantly during your travels!

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

The chart illustrates September temperature patterns in San Miguel, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Miguel, September typically has an average temperature of 21°C (70°F), with highs reaching up to 40°C (104°F) and lows dropping to around 8°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec505153596369727270635549
Data source: Temperature data for San Miguel 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 Miguel

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

September Precipitation Trends in San Miguel

The chart displays monthly precipitation patterns in San Miguel, 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 Miguel, September typically receives around 1 mm (0.0 inches) of precipitation spread over approximately 0 days.
JanFebMarAprMayJunJulAugSepOctNovDec8963721910000172560
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Miguel

In San Miguel in September, humidity is 70%. With an average temperature of 21°C (70°F), this humidity feels like a warm, muggy embrace, making travel slightly uncomfortable, as the air clings to your skin and can leave you feeling sticky and in need of frequent breaks to cool down.

September Average Humidity in San Miguel

This chart illustrates the average monthly humidity levels in San Miguel, 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 Miguel 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 Miguel

In San Miguel 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 Miguel.

Maximum UV Index Levels in San Miguel for September

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

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

This table compares monthly weather conditions in San Miguel, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (50°F)89 mm (3.5 inches)80%moderate
February Weather10°C (51°F)63 mm (2.5 inches)83%moderate
March Weather12°C (53°F)72 mm (2.8 inches)80%very high
April Weather15°C (59°F)19 mm (0.7 inches)76%very high
May Weather17°C (63°F)10 mm (0.4 inches)75%extreme
June Weather21°C (69°F)0 mm (0.0 inches)74%extreme
July Weather22°C (72°F)0 mm (0.0 inches)75%extreme
August Weather22°C (72°F)0 mm (0.0 inches)72%extreme
September Weather21°C (70°F)1 mm (0.0 inches)70%very high
October Weather17°C (64°F)7 mm (0.3 inches)70%high
November Weather13°C (56°F)25 mm (1.0 inches)74%moderate
December Weather10°C (49°F)59 mm (2.3 inches)76%moderate

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