May weather forecast
Halcyon, CA

Weather in May

The last month of the spring, May, is a pleasant month in Halcyon, California, with average temperature varying between 70.5°F (21.4°C) and 51.4°F (10.8°C).

Temperature

In May, the average high-temperature is relatively the same as in April - an agreeable 70.5°F (21.4°C). The average low-temperature, in Halcyon, is 51.4°F (10.8°C).

Humidity

The average relative humidity in May is 65%.

Rainfall

In Halcyon, during 3 rainfall days, 0.16" (4mm) of precipitation is typically accumulated. In Halcyon, California, during the entire year, the rain falls for 47.6 days and collects up to 6.93" (176mm) of precipitation.

Daylight

The average length of the day in May is 14h.

Sunshine

The average sunshine in May is 11.4h.

UV index

In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from the exposure to the Sun's UV rays for average individuals.
Note: In May, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the average humidity in May in Halcyon?

In Halcyon, the average relative humidity in May is 65%.

How much does it rain in Halcyon in May?

In Halcyon, California, in May, it is raining for 3 days, with typically 0.16" (4mm) of accumulated precipitation.

What is the average length of the day in May in Halcyon?

In May, the average length of the day in Halcyon, California, is 14h.

How long on average sun shines in May in Halcyon?

The average sunshine in May in Halcyon is 11.4h.

What is the UV index intensity in May in Halcyon?

The average daily maximum UV index in May in Halcyon, California, is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from unprotected exposure to the UV radiation.

Average temperature in May
Halcyon, CA

Average temperature in May - Halcyon, CA
  • Average high temperature in May: 70.5°F

The warmest month (with the highest average high temperature) is September (79.5°F).
The month with the lowest average high temperature is December (61.2°F).

  • Average low temperature in May: 51.4°F

The month with the highest average low temperature is September (59.9°F).
The coldest month (with the lowest average low temperature) is February (46°F).

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Average pressure in May
Halcyon, CA

Average pressure in May - Halcyon, CA
  • Average pressure in May: 29.97"

The month with the highest atmospheric pressure is January (30.12").
Months with the lowest atmospheric pressure are June, August and September (29.91").

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Average wind speed in May
Halcyon, CA

Average wind speed in May - Halcyon, CA
  • Average wind speed in May: 7.3mph

The windiest months (with the highest average wind speed) are April and May (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

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Average humidity in May
Halcyon, CA

Average humidity in May - Halcyon, CA
  • Average humidity in May: 65%

The month with the highest relative humidity is March (68%).
The month with the lowest relative humidity is October (58%).

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Average rainfall in May
Halcyon, CA

Average rainfall in May - Halcyon, CA
  • Average rainfall in May: 0.16"

The wettest month (with the highest rainfall) is March (1.61").
The driest months (with the least rainfall) are June and August (0.04").

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Average rainfall days in May
Halcyon, CA

Average rainfall days in May - Halcyon, CA
  • Average rainfall days in May: 3 days

The month with the highest number of rainy days is March (8.4 days).
The month with the least rainy days is August (0.8 days).

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

Average daylight in May / Average sunshine in May - Halcyon, CA
  • Average daylight in May: 14h

The month with the longest days is June (Average daylight: 14.5h).
The month with the shortest days is December (Average daylight: 9.8h).

  • Average sunshine in May: 11.4h

Months with the most sunshine are June, July and August (Average sunshine: 12h).
Months with the least sunshine are February and December (Average sunshine: 6.5).

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Average sunshine days in May
Halcyon, CA

Average sunshine days in May - Halcyon, CA
  • Average sunshine days in May: 27.2 days

The month with the most sunshine days is August (29.6 days).
The month with the least sunshine days is February (21 days).

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Average UV index in May
Halcyon, CA

Average UV index in May - Halcyon, CA
  • Average UV index in May: 5

Months with the highest UV index are June and August (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 4).

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Average cloud cover in May
Halcyon, CA

Average cloud cover in May - Halcyon, CA
  • Average cloud cover in May: 16

The month with the most cloud cover is March (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 6).

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Average visibility in May
Halcyon, CA

Average visibility in May - Halcyon, CA
  • Average visibility in May: 6mi

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

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