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September Weather in Cedar Valley, United States

Last updated: June 24, 2025

In September, the average temperature in Cedar Valley, United States is a pleasant 21°C (69°F). However, don't be surprised if temperatures swing between a minimum of 2°C (35°F) and a scorching 37°C (99°F). During this time, you can expect about 21 mm (0.8 in) of precipitation spread over just 2 days, and enjoy an average humidity of 46%.

September Temperature in Cedar Valley

In September in Cedar Valley, the average temperature is 21°C (69°F). Maximum temperatures can reach up to 37°C (99°F), while minimums can drop as low as 2°C (35°F). Be prepared for a variety of weather conditions during your travels!

September Weather in Cedar Valley: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Cedar Valley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cedar Valley, September typically has an average temperature of 21°C (69°F), with highs reaching up to 37°C (99°F) and lows dropping to around 2°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec263139496074827969514128
Data source: Temperature data for Cedar Valley 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 Cedar Valley

In Cedar Valley in September, the precipitation amount is 21 mm (0.8 in) over a period of 2 days.

September Precipitation Trends in Cedar Valley

The chart displays monthly precipitation patterns in Cedar Valley, 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 Cedar Valley, September typically receives around 21 mm (0.8 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec4550564736981521302640
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Cedar Valley

In Cedar Valley in September, humidity is 46%. With an average temperature of 21°C (69°F), this humidity feels like a refreshing breeze, making it comfortable for traveling and exploring the sights without feeling sticky or weighed down.

September Average Humidity in Cedar Valley

This chart illustrates the average monthly humidity levels in Cedar Valley, 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 Cedar Valley is approximately 46%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%92%84%75%62%56%44%37%46%67%84%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Cedar Valley

In Cedar Valley 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 Cedar Valley.

Maximum UV Index Levels in Cedar Valley for September

The chart shows the monthly maximum UV Index (UVI) for Cedar Valley 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 Cedar Valley typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46710111212119653
Data source: Cedar Valley 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 Cedar Valley Compares to Other Months

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

This table compares monthly weather conditions in Cedar Valley, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (26°F)45 mm (1.8 inches)91%moderate
February Weather-1°C (31°F)50 mm (2.0 inches)92%high
March Weather4°C (40°F)56 mm (2.2 inches)84%high
April Weather10°C (50°F)47 mm (1.9 inches)74%very high
May Weather15°C (60°F)36 mm (1.4 inches)62%extreme
June Weather23°C (74°F)9 mm (0.3 inches)56%extreme
July Weather28°C (82°F)7 mm (0.3 inches)44%extreme
August Weather26°C (79°F)15 mm (0.6 inches)37%extreme
September Weather21°C (69°F)21 mm (0.8 inches)46%very high
October Weather11°C (51°F)30 mm (1.2 inches)67%high
November Weather5°C (41°F)25 mm (1.0 inches)84%moderate
December Weather-2°C (28°F)40 mm (1.6 inches)88%moderate

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