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September Weather in Mont Alto, United States

Last updated: June 24, 2025

In September, the average temperature in Mont Alto, United States is 21°C (70°F), with a varied range where the minimum can dip to 4°C (39°F) and the maximum may soar up to 34°C (94°F). Expect 113 mm (4.5 in) of precipitation spread over 9 days, contributing to an average humidity level of 68%.

September Temperature in Mont Alto

In September in Mont Alto, the average temperature is 21°C (70°F). Maximums can reach up to 34°C (94°F), while minimums can dip as low as 4°C (39°F). Pack for varied weather to ensure a comfortable travel experience.

September Weather in Mont Alto: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Mont Alto, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mont Alto, September typically has an average temperature of 21°C (70°F), with highs reaching up to 34°C (94°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec343743546472787670594438
Data source: Temperature data for Mont Alto 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 Mont Alto

In Mont Alto in September, the precipitation amount is 113 mm (4.5 in) over a span of 9 days.

September Precipitation Trends in Mont Alto

The chart displays monthly precipitation patterns in Mont Alto, 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 Mont Alto, September typically receives around 113 mm (4.5 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec6296919912496130991131028493
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Mont Alto

In Mont Alto in September humidity is 68%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace, making the air feel slightly heavy and sticky, which can be quite exhausting for travelers.

September Average Humidity in Mont Alto

This chart illustrates the average monthly humidity levels in Mont Alto, 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 Mont Alto is approximately 68%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%86%84%78%79%70%59%68%80%87%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Mont Alto

In Mont Alto in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Mont Alto.

Maximum UV Index Levels in Mont Alto for September

The chart shows the monthly maximum UV Index (UVI) for Mont Alto 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 Mont Alto typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910101098743
Data source: Mont Alto 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 Mont Alto Compares to Other Months

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

This table compares monthly weather conditions in Mont Alto, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)62 mm (2.4 inches)86%moderate
February Weather3°C (38°F)96 mm (3.8 inches)86%moderate
March Weather6°C (44°F)91 mm (3.6 inches)86%high
April Weather12°C (54°F)99 mm (3.9 inches)84%very high
May Weather18°C (64°F)124 mm (4.9 inches)78%very high
June Weather22°C (73°F)96 mm (3.8 inches)79%very high
July Weather26°C (78°F)130 mm (5.1 inches)70%very high
August Weather24°C (76°F)99 mm (3.9 inches)59%very high
September Weather21°C (70°F)113 mm (4.5 inches)68%very high
October Weather15°C (60°F)102 mm (4.0 inches)80%high
November Weather7°C (45°F)84 mm (3.3 inches)86%moderate
December Weather3°C (38°F)93 mm (3.7 inches)85%moderate

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