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September Weather in Morgan Hill, United States

Last updated: June 24, 2025

In Morgan Hill, United States, the average temperature in September is a mild 20°C (68°F). Expect temperatures to range from a cool 7°C (44°F) to a scorching 41°C (106°F). Fortunately, precipitation is minimal, with only 2 mm (0.1 in) falling over the course of 0 days, and the air remains comfortably humid at an average of 55%.

September Temperature in Morgan Hill

In September in Morgan Hill, the average temperature is 20°C (68°F). Maximums can reach 41°C (106°F), while minimums can drop as low as 7°C (44°F). It's essential to pack for a range of temperatures to ensure a comfortable travel experience.

September Weather in Morgan Hill: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Morgan Hill, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Morgan Hill, September typically has an average temperature of 20°C (68°F), with highs reaching up to 41°C (106°F) and lows dropping to around 7°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec495052566066697068635448
Data source: Temperature data for Morgan Hill 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 Morgan Hill

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

September Precipitation Trends in Morgan Hill

The chart displays monthly precipitation patterns in Morgan Hill, 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 Morgan Hill, September typically receives around 2 mm (0.1 inches) of precipitation spread over approximately 0 days.
JanFebMarAprMayJunJulAugSepOctNovDec12811010132221002244098
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Morgan Hill

In Morgan Hill in September humidity is 55%. With an average temperature of 20°C (68°F), this humidity feels like a warm embrace, making it comfortable for traveling but slightly sticky, encouraging leisurely strolls and relaxed outdoor activities.

September Average Humidity in Morgan Hill

This chart illustrates the average monthly humidity levels in Morgan Hill, 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 Morgan Hill is approximately 55%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%84%82%78%71%64%59%54%55%62%78%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Morgan Hill

In Morgan Hill 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 Morgan Hill.

Maximum UV Index Levels in Morgan Hill for September

The chart shows the monthly maximum UV Index (UVI) for Morgan Hill 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 Morgan Hill typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec4589111111109753
Data source: Morgan Hill 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 Morgan Hill Compares to Other Months

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

This table compares monthly weather conditions in Morgan Hill, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather9°C (49°F)128 mm (5.0 inches)82%moderate
February Weather10°C (50°F)110 mm (4.3 inches)84%moderate
March Weather11°C (52°F)101 mm (4.0 inches)82%very high
April Weather13°C (56°F)32 mm (1.3 inches)78%very high
May Weather15°C (60°F)22 mm (0.9 inches)71%extreme
June Weather19°C (66°F)1 mm (0.0 inches)64%extreme
July Weather20°C (69°F)0 mm (0.0 inches)58%extreme
August Weather21°C (70°F)0 mm (0.0 inches)54%very high
September Weather20°C (68°F)2 mm (0.1 inches)55%very high
October Weather17°C (63°F)24 mm (1.0 inches)62%high
November Weather12°C (55°F)39 mm (1.6 inches)78%moderate
December Weather9°C (49°F)98 mm (3.9 inches)80%moderate

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