September Weather in Colfax, United States

Last updated: June 24, 2025

In Colfax, United States, the average temperature in September hovers around 21°C (70°F), with a pleasant range from a minimum of 5°C (42°F) to a maximum of 34°C (93°F). Expect about 63 mm (2.5 in) of precipitation over approximately 8 days, contributing to an average humidity of 78%. Prepare for a month that balances warmth and a touch of moisture!

September Temperature in Colfax

In September in Colfax, the average temperature is 21°C (70°F), with maximums reaching 34°C (93°F) and minimums dropping as low as 5°C (42°F). This range makes Colfax a perfect destination for travelers seeking both warm days and cooler evenings.

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 21°C (70°F), with highs reaching up to 34°C (93°F) and lows dropping to around 5°C (42°F).

Data source: Temperature data for Colfax generated using information from the Copernicus Climate Change Service.

September Precipitation in Colfax

In Colfax in September, the precipitation amount is 63 mm (2.5 in) spread over 8 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 63 mm (2.5 inches) of precipitation spread over approximately 8 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Colfax

In Colfax in September, humidity is 78%. With an average temperature of 21°C (70°F), this humidity feels like a warm, enveloping blanket that can leave travelers feeling sticky and slightly fatigued, making it important to stay hydrated and take frequent breaks from outdoor activities.

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 78%, offering insight into how humid the weather typically is during this month.

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.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (29°F)	76 mm (3.0 inches)	85%	moderate
February Weather	0°C (32°F)	79 mm (3.1 inches)	85%	moderate
March Weather	6°C (42°F)	107 mm (4.2 inches)	86%	high
April Weather	11°C (52°F)	92 mm (3.6 inches)	87%	very high
May Weather	18°C (64°F)	143 mm (5.6 inches)	81%	very high
June Weather	23°C (74°F)	95 mm (3.7 inches)	82%	very high
July Weather	25°C (77°F)	92 mm (3.6 inches)	81%	very high
August Weather	23°C (74°F)	86 mm (3.4 inches)	79%	very high
September Weather	21°C (70°F)	63 mm (2.5 inches)	78%	very high
October Weather	14°C (58°F)	105 mm (4.1 inches)	81%	high
November Weather	5°C (42°F)	76 mm (3.0 inches)	89%	moderate
December Weather	2°C (36°F)	64 mm (2.5 inches)	86%	low