nomadseason

September Weather in Brookings, United States

Last updated: June 24, 2025

In Brookings, United States, the average temperature in September hovers around 17°C (64°F), with a minimum of 2°C (35°F) and a maximum of 32°C (91°F). Expect around 101 mm (4.0 in) of precipitation spread over 9 days, accompanied by a high average humidity of 82%. Prepare for a month that combines warmth with occasional showers!

September Temperature in Brookings

In September in Brookings, the average temperature is 17°C (64°F). Maximums can reach 32°C (91°F), and minimums can be as low as 2°C (35°F). Travelers should be prepared for a wide range of temperatures during this time.

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

The chart illustrates September temperature patterns in Brookings, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Brookings, September typically has an average temperature of 17°C (64°F), with highs reaching up to 32°C (91°F) and lows dropping to around 2°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec161632425771737063463324
Data source: Temperature data for Brookings 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 Brookings

In Brookings in September, the total precipitation amount is 101 mm (4.0 in), occurring over a span of 9 days.

September Precipitation Trends in Brookings

The chart displays monthly precipitation patterns in Brookings, 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 Brookings, September typically receives around 101 mm (4.0 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec212156701048496115101712734
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Brookings

In Brookings in September, humidity is 82%. With an average temperature of 17°C (64°F), this humidity feels like a damp embrace that can make traveling quite uncomfortable, as the sticky air clings to your skin and leaves you yearning for a cool breeze.

September Average Humidity in Brookings

This chart illustrates the average monthly humidity levels in Brookings, 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 Brookings is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%89%81%82%76%81%82%83%82%82%87%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Brookings

In Brookings 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 Brookings.

Maximum UV Index Levels in Brookings for September

The chart shows the monthly maximum UV Index (UVI) for Brookings 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 Brookings typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35589101098532
Data source: Brookings 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 Brookings Compares to Other Months

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

This table compares monthly weather conditions in Brookings, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (17°F)21 mm (0.8 inches)85%moderate
February Weather-9°C (17°F)21 mm (0.8 inches)89%moderate
March Weather0°C (33°F)56 mm (2.2 inches)81%moderate
April Weather6°C (42°F)70 mm (2.8 inches)82%very high
May Weather14°C (57°F)104 mm (4.1 inches)76%very high
June Weather22°C (71°F)84 mm (3.3 inches)81%very high
July Weather23°C (74°F)96 mm (3.8 inches)82%very high
August Weather21°C (70°F)115 mm (4.5 inches)83%very high
September Weather17°C (64°F)101 mm (4.0 inches)82%very high
October Weather8°C (47°F)71 mm (2.8 inches)82%moderate
November Weather0°C (33°F)27 mm (1.0 inches)87%moderate
December Weather-4°C (25°F)34 mm (1.3 inches)84%low

Compare Brookings's Climate with Cities Worldwide