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September Weather in Alva, United States

Last updated: June 24, 2025

The average temperature in Alva, United States during September is a pleasant 24°C (75°F). However, temperatures can vary significantly, with a minimum of 7°C (44°F) and a maximum soaring to 39°C (103°F). Expect precipitation of around 52 mm (2.0 in) over 6 days, and enjoy an average humidity of 67% for a comfortable atmosphere.

September Temperature in Alva

In September in Alva, the average temperature is 24°C (75°F). The maximum can reach 39°C (103°F), and the minimum can be as low as 7°C (44°F). Therefore, travelers should prepare for a wide range of temperatures and pack accordingly for both warm and cool conditions.

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

The chart illustrates September temperature patterns in Alva, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alva, September typically has an average temperature of 24°C (75°F), with highs reaching up to 39°C (103°F) and lows dropping to around 7°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec363750576879828075594840
Data source: Temperature data for Alva 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 Alva

In Alva, in September, the precipitation amount is 52 mm (2.0 in) over the course of 6 days.

September Precipitation Trends in Alva

The chart displays monthly precipitation patterns in Alva, 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 Alva, September typically receives around 52 mm (2.0 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec3118696814685345852821734
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Alva

In Alva in September humidity is 67%. With an average temperature of 24°C (75°F), this humidity feels like a warm and sticky embrace, making traveling a bit uncomfortable as you find yourself seeking shade and refreshing drinks more often.

September Average Humidity in Alva

This chart illustrates the average monthly humidity levels in Alva, 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 Alva is approximately 67%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%76%67%70%82%82%81%76%67%72%80%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Alva

In Alva 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 Alva.

Maximum UV Index Levels in Alva for September

The chart shows the monthly maximum UV Index (UVI) for Alva 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 Alva typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46710111111109753
Data source: Alva 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 Alva Compares to Other Months

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

This table compares monthly weather conditions in Alva, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)31 mm (1.2 inches)75%moderate
February Weather3°C (37°F)18 mm (0.7 inches)76%high
March Weather10°C (51°F)69 mm (2.7 inches)67%high
April Weather14°C (58°F)67 mm (2.7 inches)70%very high
May Weather20°C (68°F)146 mm (5.7 inches)82%extreme
June Weather26°C (79°F)85 mm (3.3 inches)82%extreme
July Weather28°C (83°F)34 mm (1.3 inches)81%extreme
August Weather27°C (80°F)58 mm (2.3 inches)76%very high
September Weather24°C (75°F)52 mm (2.0 inches)67%very high
October Weather15°C (60°F)82 mm (3.2 inches)72%high
November Weather9°C (48°F)17 mm (0.7 inches)80%moderate
December Weather5°C (41°F)34 mm (1.3 inches)83%moderate

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