May weather forecast
American Canyon, CA

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Weather in May

The last month of the spring, May, is a pleasant month in American Canyon, California, with an average temperature varying between 72°F (22.2°C) and 49.6°F (9.8°C).

Temperature

May begins with an average high-temperature of a pleasant 72°F (22.2°C), reflecting close similarity to the preceding month. American Canyon documents a marked decrease from day to night, with an average low of 49.6°F (9.8°C) throughout May.

Humidity

The average relative humidity in May in American Canyon, California, is 66%.

Rainfall

In American Canyon, during May, the rain falls for 4.7 days and regularly aggregates up to 0.63" (16mm) of precipitation. Throughout the year, there are 68.2 rainfall days, and 11.93" (303mm) of precipitation is accumulated.

Daylight

In May, the average length of the day is 14h and 16min.
On the first day of the month, sunrise is at 6:11 am and sunset at 8:00 pm. On the last day of May, sunrise is at 5:47 am and sunset at 8:26 pm PDT.

Sunshine

In May, the average sunshine in American Canyon is 10.9h.

UV index

The average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 5 during May translates into the following recommendations:
Guard yourself - An obligation to protect skin and eyes from harm exists. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
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Frequently asked questions

What is the temperature in May in American Canyon?

The high-temperature, in May, in American Canyon, records 72°F (22.2°C), while the low-temperature is 49.6°F (9.8°C).

What is the average humidity in May in American Canyon?

In American Canyon, the average relative humidity in May is 66%.

How many days does it rain in May in American Canyon?

In American Canyon, during May, the rain falls for 4.7 days and regularly aggregates up to 0.63" (16mm) of precipitation.

How many hours of daylight does American Canyon have in May?

The average day length in May in American Canyon, California, is 14h and 16min.

What time are sunrise and sunset in May in American Canyon?

In May, on the first day of the month, sunrise is at 6:11 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 8:26 pm PDT.

How long on average sun shines in May in American Canyon?

The average sunshine duration in May is 10.9h.

What is the UV index intensity in May in American Canyon?

In American Canyon, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
American Canyon, CA

Average temperature in May - American Canyon, CA
  • Average high temperature in May: 72°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is December (54.9°F).

  • Average low temperature in May: 49.6°F

The month with the highest average low temperature is August (56.5°F).
The coldest months (with the lowest average low temperature) are January and December (42.3°F).

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Average pressure in May
American Canyon, CA

Average pressure in May - American Canyon, CA
  • Average pressure in May: 29.97"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in May
American Canyon, CA

Average wind speed in May - American Canyon, CA
  • Average wind speed in May: 6.6mph

The windiest month (with the highest average wind speed) is May (6.6mph).
The calmest month (with the lowest average wind speed) is November (4.5mph).

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Average humidity in May
American Canyon, CA

Average humidity in May - American Canyon, CA
  • Average humidity in May: 66%

The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is September (58%).

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Average rainfall in May
American Canyon, CA

Average rainfall in May - American Canyon, CA
  • Average rainfall in May: 0.63"

The wettest month (with the highest rainfall) is February (2.32").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in May
American Canyon, CA

Average rainfall days in May - American Canyon, CA
  • Average rainfall days in May: 4.7 days

The month with the highest number of rainy days is March (11.9 days).
The month with the least rainy days is August (0.9 days).

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Average daylight in May /
Average sunshine in May
American Canyon, CA

Average daylight in May / Average sunshine in May - American Canyon, CA
  • Average daylight in May: 14h and 2min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in May: 10h and 5min

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

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Average sunshine days in May
American Canyon, CA

Average sunshine days in May - American Canyon, CA
  • Average sunshine days in May: 25.7 days

The months with the most sunshine days are July and August (29.1 days).
The month with the least sunshine days is March (18.3 days).

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Average UV index in May
American Canyon, CA

Average UV index in May - American Canyon, CA
  • Average UV index in May: 5

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in May
American Canyon, CA

Average cloud cover in May - American Canyon, CA
  • Average cloud cover in May: 23

The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 7).

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Average visibility in May
American Canyon, CA

Average visibility in May - American Canyon, CA
  • Average visibility in May: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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American Canyon, California, USA

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