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September Weather in Birnamwood, United States

Last updated: June 24, 2025

In Birnamwood, United States, the average temperature in September hovers around 16°C (60°F). Be prepared for a range in temperatures, as the minimum can plunge to -1°C (30°F) and the maximum can soar to 32°C (89°F). Additionally, expect 81 mm (3.2 in) of precipitation spread over approximately 10 days, accompanied by an average humidity of 78%.

September Temperature in Birnamwood

In September in Birnamwood, the average temperature is 16°C (60°F), with maximums reaching 32°C (89°F) and minimums plummeting to -1°C (30°F). Be prepared for a wide range of temperatures while traveling, and pack accordingly to enjoy your visit to Birnamwood.

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

The chart illustrates September temperature patterns in Birnamwood, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Birnamwood, September typically has an average temperature of 16°C (60°F), with highs reaching up to 32°C (89°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec161730415566706660463223
Data source: Temperature data for Birnamwood 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 Birnamwood

In Birnamwood in September, the precipitation amount is 81 mm (3.2 in) over a span of 10 days.

September Precipitation Trends in Birnamwood

The chart displays monthly precipitation patterns in Birnamwood, 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 Birnamwood, September typically receives around 81 mm (3.2 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec35495610299109118127811085154
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Birnamwood

In Birnamwood in September humidity is 78%. With an average temperature of 16°C (60°F), this humidity feels like a damp embrace, making travel a bit uncomfortable as the air clings to your skin and leaves you feeling sticky.

September Average Humidity in Birnamwood

This chart illustrates the average monthly humidity levels in Birnamwood, 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 Birnamwood is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%90%87%84%77%75%75%73%78%84%89%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Birnamwood

In Birnamwood 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 Birnamwood.

Maximum UV Index Levels in Birnamwood for September

The chart shows the monthly maximum UV Index (UVI) for Birnamwood 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 Birnamwood typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2457910997532
Data source: Birnamwood 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 Birnamwood Compares to Other Months

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

This table compares monthly weather conditions in Birnamwood, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (17°F)35 mm (1.4 inches)89%low
February Weather-9°C (17°F)49 mm (1.9 inches)90%moderate
March Weather-1°C (31°F)56 mm (2.2 inches)87%moderate
April Weather5°C (41°F)102 mm (4.0 inches)84%high
May Weather13°C (56°F)99 mm (3.9 inches)77%very high
June Weather19°C (66°F)109 mm (4.3 inches)75%very high
July Weather21°C (70°F)118 mm (4.6 inches)74%very high
August Weather19°C (67°F)127 mm (5.0 inches)73%very high
September Weather16°C (60°F)81 mm (3.2 inches)78%high
October Weather8°C (47°F)108 mm (4.3 inches)84%moderate
November Weather0°C (32°F)51 mm (2.0 inches)89%moderate
December Weather-5°C (23°F)54 mm (2.1 inches)87%low

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