September Weather in Davis, United States

Last updated: June 24, 2025

The average temperature in Davis, United States during September is a pleasant 23°C (74°F). The temperature can vary significantly, with a minimum of 7°C (44°F) and soaring up to a maximum of 45°C (113°F). Rainfall is minimal, with only 1 mm (0.0 in) expected across 0 days. You can enjoy relatively low humidity, averaging around 44%.

September Temperature in Davis

In September in Davis, the average temperature is 23°C (74°F). Maximum temperatures can reach 45°C (113°F), while minimums can drop as low as 7°C (44°F). When traveling to Davis in September, be prepared for a wide range of temperatures and pack accordingly for both warm and cool conditions.

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

The chart illustrates September temperature patterns in Davis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Davis, September typically has an average temperature of 23°C (74°F), with highs reaching up to 45°C (113°F) and lows dropping to around 7°C (44°F).

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

September Precipitation in Davis

In Davis in September, the precipitation amount is 1 mm (0.0 in) during a span of 0 days.

September Precipitation Trends in Davis

The chart displays monthly precipitation patterns in Davis, 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 Davis, September typically receives around 1 mm (0.0 inches) of precipitation spread over approximately 0 days.

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

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Millimeters (mm) Inches (in)

September Humidity in Davis

In Davis in September humidity is 44%. With an average temperature of 23°C (74°F), this humidity feels like a comfortable embrace, making it pleasant for traveling and exploring the sights without feeling overly hot or sticky.

September Average Humidity in Davis

This chart illustrates the average monthly humidity levels in Davis, 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 Davis is approximately 44%, 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 Davis

In Davis in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Davis.

Maximum UV Index Levels in Davis for September

The chart shows the monthly maximum UV Index (UVI) for Davis 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 Davis typically reaches 9, which falls under the very high exposure category.

Data source: Davis 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 Davis Compares to Other Months

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

This table compares monthly weather conditions in Davis, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (50°F)	117 mm (4.6 inches)	84%	moderate
February Weather	12°C (54°F)	101 mm (4.0 inches)	84%	moderate
March Weather	14°C (57°F)	81 mm (3.2 inches)	83%	high
April Weather	17°C (63°F)	34 mm (1.3 inches)	81%	very high
May Weather	21°C (69°F)	18 mm (0.7 inches)	74%	very high
June Weather	24°C (76°F)	3 mm (0.1 inches)	64%	extreme
July Weather	25°C (78°F)	0 mm (0.0 inches)	44%	extreme
August Weather	25°C (77°F)	0 mm (0.0 inches)	36%	very high
September Weather	23°C (74°F)	1 mm (0.0 inches)	44%	very high
October Weather	19°C (67°F)	33 mm (1.3 inches)	65%	high
November Weather	13°C (56°F)	42 mm (1.7 inches)	84%	moderate
December Weather	10°C (50°F)	88 mm (3.5 inches)	83%	moderate