nomadseason

September Weather in Hayden, United States

Last updated: June 24, 2025

In Hayden, United States, the average temperature in September is a pleasant 16°C (61°F). Temperatures can range from a chilly 1°C (34°F) to a warm 34°C (94°F). Expect 44 mm (1.7 in) of precipitation spread over about 5 days, with an average humidity level of 62%, making it a month of diverse weather experiences!

September Temperature in Hayden

In September in Hayden, the average temperature is 16°C (61°F), with maximums reaching 34°C (94°F) and minimums dropping as low as 1°C (34°F). This diverse range of temperatures makes it essential to pack a variety of clothing options for your travels.

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 16°C (61°F), with highs reaching up to 34°C (94°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec302837455563727160463732
Data source: Temperature data for Hayden generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Hayden

In Hayden in September, the precipitation amount is 44 mm (1.7 in) over the course of 5 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 44 mm (1.7 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec101103828063346144485115110
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Hayden

In Hayden in September, humidity is 62%. With an average temperature of 16°C (61°F), this humidity feels like a gentle blanket, making traveling comfortable yet occasionally sticky, prompting the need for light, breathable clothing to fully enjoy the sights.

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 62%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%89%87%84%78%78%77%64%62%79%87%90%
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 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check 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 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2456891097532
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 Weather-1°C (30°F)100 mm (4.0 inches)89%low
February Weather-2°C (29°F)103 mm (4.1 inches)89%moderate
March Weather3°C (38°F)82 mm (3.2 inches)87%moderate
April Weather7°C (45°F)80 mm (3.2 inches)84%high
May Weather13°C (56°F)63 mm (2.5 inches)77%very high
June Weather17°C (63°F)34 mm (1.3 inches)78%very high
July Weather22°C (72°F)6 mm (0.3 inches)77%very high
August Weather22°C (71°F)14 mm (0.6 inches)64%very high
September Weather16°C (61°F)44 mm (1.7 inches)62%high
October Weather8°C (47°F)85 mm (3.3 inches)79%moderate
November Weather3°C (38°F)115 mm (4.5 inches)87%moderate
December Weather0°C (32°F)110 mm (4.3 inches)90%low

Compare Hayden's Climate with Cities Worldwide