nomadseason

September Weather in Colfax, United States

Last updated: June 24, 2025

In September, the average temperature in Colfax, United States is a pleasant 20°C (68°F). Expect temperatures to range from a cool 4°C (39°F) to a warm 33°C (92°F). With an average precipitation of 118 mm (4.7 in) over 9 days, you might want to keep an umbrella handy. Additionally, the average humidity hovers around a comfortable 73%, ensuring a refreshing atmosphere throughout the month.

September Temperature in Colfax

In September in Colfax, the average temperature is 20°C (68°F). Maximum temperatures can reach up to 33°C (92°F), while minimums can drop as low as 4°C (39°F). It's a great time for travelers to enjoy mild weather and plan outdoor activities.

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

The chart illustrates September temperature patterns in Colfax, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Colfax, September typically has an average temperature of 20°C (68°F), with highs reaching up to 33°C (92°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec222339496274777368523830
Data source: Temperature data for Colfax 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 Colfax

In Colfax in September, the precipitation amount is 118 mm (4.7 in), occurring over a span of 9 days.

September Precipitation Trends in Colfax

The chart displays monthly precipitation patterns in Colfax, 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 Colfax, September typically receives around 118 mm (4.7 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec4044817616511974781191404335
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Colfax

In Colfax in September, humidity is 73%. With an average temperature of 20°C (68°F), this humidity feels like a warm embrace, making outdoor activities somewhat sticky, yet the atmosphere remains pleasant for leisurely strolls and sightseeing.

September Average Humidity in Colfax

This chart illustrates the average monthly humidity levels in Colfax, 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 Colfax is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%80%77%78%77%81%81%77%73%75%85%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Colfax

In Colfax 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 Colfax.

Maximum UV Index Levels in Colfax for September

The chart shows the monthly maximum UV Index (UVI) for Colfax 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 Colfax typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35689111098643
Data source: Colfax 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 Colfax Compares to Other Months

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

This table compares monthly weather conditions in Colfax, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (22°F)40 mm (1.6 inches)78%moderate
February Weather-5°C (23°F)44 mm (1.7 inches)80%moderate
March Weather4°C (39°F)81 mm (3.2 inches)77%high
April Weather9°C (49°F)76 mm (3.0 inches)77%very high
May Weather17°C (62°F)165 mm (6.5 inches)77%very high
June Weather23°C (74°F)119 mm (4.7 inches)81%extreme
July Weather25°C (77°F)74 mm (2.9 inches)81%very high
August Weather23°C (74°F)78 mm (3.1 inches)77%very high
September Weather20°C (68°F)118 mm (4.7 inches)73%very high
October Weather11°C (53°F)140 mm (5.5 inches)75%high
November Weather3°C (38°F)43 mm (1.7 inches)85%moderate
December Weather-1°C (31°F)35 mm (1.4 inches)83%moderate

Compare Colfax's Climate with Cities Worldwide