May weather forecast
Blackhawk, CA

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Weather in May

May, the last month of the spring in Blackhawk, is an agreeable month, with an average temperature varying between 48.7°F (9.3°C) and 72.5°F (22.5°C).

Temperature

May's climate shows a minor adjustment in average high-temperatures to a pleasant 72.5°F (22.5°C) from April's 67.6°F (19.8°C). With a significant temperature contrast, nighttime temperatures hover around an average low of 48.7°F (9.3°C) in May.

Humidity

The average relative humidity in May is 64%.

Rainfall

In Blackhawk, in May, it is raining for 4.6 days, with typically 0.55" (14mm) of accumulated precipitation. Throughout the year, in Blackhawk, there are 67.2 rainfall days, and 10.98" (279mm) of precipitation is accumulated.

Daylight

In May, the average length of the day is 14h and 14min.
On the first day of the month, sunrise is at 6:10 am and sunset at 7:58 pm. On the last day of May, in Blackhawk, sunrise is at 5:47 am and sunset at 8:23 pm PDT.

Sunshine

In May, the average sunshine is 10.9h.

UV index

In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: An average maximum UV index of 5 in May leads to these recommendations:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
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Frequently asked questions

What is the temperature in May in Blackhawk?

Blackhawk in May has an average high-temperature of 72.5°F (22.5°C) and an average low-temperature of 48.7°F (9.3°C).

What is the average humidity in May in Blackhawk?

In May, the average relative humidity in Blackhawk is 64%.

How many days does it rain in May in Blackhawk?

In Blackhawk, California, in May, during 4.6 rainfall days, 0.55" (14mm) of precipitation is typically accumulated.

How many hours of daylight does Blackhawk have in May?

In May, the average day length is 14h and 14min.

What time are sunrise and sunset in May in Blackhawk?

On the first day of May in Blackhawk, sunrise is at 6:10 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 8:23 pm PDT.

How long on average sun shines in May in Blackhawk?

In May, the average sunshine duration in Blackhawk, California, is 10.9h.

How high is the UV index in May in Blackhawk?

In Blackhawk, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium health risk 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
Blackhawk, CA

Average temperature in May - Blackhawk, CA
  • Average high temperature in May: 72.5°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is December (55.9°F).

  • Average low temperature in May: 48.7°F

The month with the highest average low temperature is September (56.5°F).
The coldest month (with the lowest average low temperature) is December (42.1°F).

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Average pressure in May
Blackhawk, CA

Average pressure in May - Blackhawk, CA
  • Average pressure in May: 29.98"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).

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Average wind speed in May
Blackhawk, CA

Average wind speed in May - Blackhawk, CA
  • Average wind speed in May: 6.7mph

The windiest month (with the highest average wind speed) is May (6.7mph).
The calmest month (with the lowest average wind speed) is November (4.2mph).

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Average humidity in May
Blackhawk, CA

Average humidity in May - Blackhawk, CA
  • Average humidity in May: 64%

The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is September (57%).

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Average rainfall in May
Blackhawk, CA

Average rainfall in May - Blackhawk, CA
  • Average rainfall in May: 0.55"

The wettest month (with the highest rainfall) is February (2.28").
The driest month (with the least rainfall) is July (0").

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Average rainfall days in May
Blackhawk, CA

Average rainfall days in May - Blackhawk, CA
  • Average rainfall days in May: 4.6 days

The month with the highest number of rainy days is March (12.6 days).
The month with the least rainy days is August (0.6 days).

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Average daylight in May /
Average sunshine in May
Blackhawk, CA

Average daylight in May / Average sunshine in May - Blackhawk, CA
  • Average daylight in May: 14h and 1min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in May: 10h and 5min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

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Average sunshine days in May
Blackhawk, CA

Average sunshine days in May - Blackhawk, CA
  • Average sunshine days in May: 25.7 days

The month with the most sunshine days is July (29.9 days).
The month with the least sunshine days is March (17.5 days).

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Average UV index in May
Blackhawk, CA

Average UV index in May - Blackhawk, 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
Blackhawk, CA

Average cloud cover in May - Blackhawk, CA
  • Average cloud cover in May: 22

The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 6).

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Average visibility in May
Blackhawk, CA

Average visibility in May - Blackhawk, 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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Blackhawk, California, USA

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