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September Weather in Hayden, United States

Last updated: June 24, 2025

In September, the average temperature in Hayden, United States hovers around 22°C (71°F), offering a comfortable climate. However, be prepared for a range of temperatures, with minimums dipping to 7°C (45°F) and maximums soaring up to 35°C (95°F). Expect 86 mm (3.4 in) of precipitation spread over 7 days, accompanied by an average humidity of 69%—perfect for enjoying the lush scenery this time of year brings!

September Temperature in Hayden

In September in Hayden, the average temperature is 22°C (71°F). Maximum temperatures can reach 35°C (95°F), while minimums can drop as low as 7°C (45°F). This variation in temperature makes it a suitable time for travelers to enjoy both warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Hayden, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hayden, September typically has an average temperature of 22°C (71°F), with highs reaching up to 35°C (95°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec333746556674787571594439
Data source: Temperature data for Hayden 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 Hayden

In Hayden in September, the total precipitation amount is 86 mm (3.4 in) over a span of 7 days.

September Precipitation Trends in Hayden

The chart displays monthly precipitation patterns in Hayden, 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 Hayden, September typically receives around 86 mm (3.4 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec811091351251281269691869497102
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Hayden

In Hayden in September humidity is 69%. With an average temperature of 22°C (71°F), this humidity feels like walking through a warm embrace, making travel slightly uncomfortable yet refreshing, as the air clings to your skin and adds a layer of warmth to your exploration.

September Average Humidity in Hayden

This chart illustrates the average monthly humidity levels in Hayden, 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 Hayden is approximately 69%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%86%84%79%82%79%70%69%76%88%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Hayden

In Hayden 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 Hayden.

Maximum UV Index Levels in Hayden for September

The chart shows the monthly maximum UV Index (UVI) for Hayden 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 Hayden typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910111098643
Data source: Hayden 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 Hayden Compares to Other Months

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

This table compares monthly weather conditions in Hayden, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)81 mm (3.2 inches)87%moderate
February Weather3°C (37°F)109 mm (4.3 inches)85%moderate
March Weather8°C (46°F)135 mm (5.3 inches)86%high
April Weather13°C (55°F)125 mm (4.9 inches)84%very high
May Weather19°C (67°F)128 mm (5.1 inches)79%very high
June Weather24°C (75°F)125 mm (4.9 inches)82%extreme
July Weather25°C (78°F)95 mm (3.8 inches)79%very high
August Weather24°C (76°F)91 mm (3.6 inches)70%very high
September Weather22°C (71°F)86 mm (3.4 inches)69%very high
October Weather15°C (60°F)94 mm (3.7 inches)76%high
November Weather7°C (44°F)97 mm (3.8 inches)88%moderate
December Weather4°C (39°F)102 mm (4.0 inches)87%moderate

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