May Weather in American Canyon, United States

Last updated: June 24, 2025

In American Canyon, United States, the average temperature in May hovers around 18°C (64°F). During this time, temperatures can range from a chilly 5°C (41°F) to a scorching 37°C (99°F). Expect about 19 mm (0.8 in) of precipitation over the course of 2 days, with an average humidity level of 74%. Prepare for a month that offers a mix of warm days and refreshing rains!

May Temperature in American Canyon

In May in American Canyon, the average temperature is 18°C (64°F). The maximum can reach 37°C (99°F) and the minimum can be as low as 5°C (41°F). This variation in temperature makes American Canyon an ideal destination for travelers who enjoy both warm and cooler weather.

May Weather in American Canyon: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in American Canyon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In American Canyon, May typically has an average temperature of 18°C (64°F), with highs reaching up to 37°C (99°F) and lows dropping to around 5°C (41°F).

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

May Precipitation in American Canyon

In American Canyon in May, the precipitation amount is 19 mm (0.8 in) over a span of 2 days.

May Precipitation Trends in American Canyon

The chart displays monthly precipitation patterns in American Canyon, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In American Canyon, May typically receives around 19 mm (0.8 inches) of precipitation spread over approximately 2 days.

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

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Millimeters (mm) Inches (in)

May Humidity in American Canyon

In American Canyon in May humidity is 74%. With an average temperature of 18°C (64°F), this humidity feels like a warm embrace, making it ideal for leisurely strolls but potentially uncomfortable for extended outdoor activities.

May Average Humidity in American Canyon

This chart illustrates the average monthly humidity levels in American Canyon, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in American Canyon is approximately 74%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in American Canyon

In American Canyon in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in American Canyon.

Maximum UV Index Levels in American Canyon for May

The chart shows the monthly maximum UV Index (UVI) for American Canyon in May, 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 May, the maximum UV index in American Canyon typically reaches 10, which falls under the very high exposure category.

Data source: American Canyon May 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 May Weather in American Canyon Compares to Other Months

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

This table compares monthly weather conditions in American Canyon, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (50°F)	119 mm (4.7 inches)	84%	moderate
February Weather	11°C (53°F)	113 mm (4.5 inches)	84%	moderate
March Weather	12°C (55°F)	81 mm (3.2 inches)	83%	high
April Weather	15°C (60°F)	33 mm (1.3 inches)	81%	very high
May Weather	18°C (64°F)	19 mm (0.8 inches)	74%	very high
June Weather	21°C (70°F)	2 mm (0.1 inches)	64%	extreme
July Weather	21°C (70°F)	0 mm (0.0 inches)	44%	extreme
August Weather	21°C (71°F)	0 mm (0.0 inches)	36%	very high
September Weather	21°C (70°F)	1 mm (0.0 inches)	44%	very high
October Weather	18°C (65°F)	29 mm (1.1 inches)	65%	high
November Weather	13°C (56°F)	43 mm (1.7 inches)	84%	moderate
December Weather	10°C (50°F)	91 mm (3.6 inches)	83%	moderate