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September Weather in Valle, United States

Last updated: June 24, 2025

In Valle, United States, the average temperature in September is a pleasant 21°C (70°F). Expect a temperature range that can dip to a minimum of 2°C (35°F) and soar up to a maximum of 36°C (98°F). During this month, you'll encounter approximately 16 mm (0.6 in) of precipitation over 3 days, with an average humidity of 59%.

September Temperature in Valle

In September in Valle, the average temperature is 21°C (70°F). Maximums can reach 36°C (98°F), while minimums can dip as low as 2°C (35°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both warm and cool conditions.

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

The chart illustrates September temperature patterns in Valle, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Valle, September typically has an average temperature of 21°C (70°F), with highs reaching up to 36°C (98°F) and lows dropping to around 2°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec363845556275787770554637
Data source: Temperature data for Valle 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 Valle

In Valle in September, the precipitation amount is 16 mm (0.6 in), spread over a duration of 3 days.

September Precipitation Trends in Valle

The chart displays monthly precipitation patterns in Valle, 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 Valle, September typically receives around 16 mm (0.6 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec32344214163371917201624
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Valle

In Valle in September humidity is 59%. With an average temperature of 21°C (70°F), this humidity feels like a pleasantly warm embrace, making it ideal for leisurely strolls and outdoor activities.

September Average Humidity in Valle

This chart illustrates the average monthly humidity levels in Valle, 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 Valle is approximately 59%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%83%72%63%46%35%33%41%59%70%79%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Valle

In Valle in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Valle.

Maximum UV Index Levels in Valle for September

The chart shows the monthly maximum UV Index (UVI) for Valle 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 Valle typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec479111213131211864
Data source: Valle 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 Valle Compares to Other Months

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

This table compares monthly weather conditions in Valle, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)32 mm (1.2 inches)80%moderate
February Weather3°C (38°F)34 mm (1.4 inches)83%high
March Weather7°C (45°F)42 mm (1.7 inches)72%very high
April Weather13°C (55°F)14 mm (0.6 inches)63%extreme
May Weather17°C (62°F)16 mm (0.6 inches)46%extreme
June Weather24°C (75°F)3 mm (0.1 inches)35%extreme
July Weather25°C (78°F)37 mm (1.4 inches)33%extreme
August Weather25°C (77°F)19 mm (0.8 inches)41%extreme
September Weather21°C (70°F)16 mm (0.6 inches)59%extreme
October Weather13°C (56°F)20 mm (0.8 inches)70%very high
November Weather8°C (46°F)16 mm (0.6 inches)79%high
December Weather3°C (37°F)24 mm (0.9 inches)82%moderate

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