May weather forecast and climate
Healdsburg, CA

Neat rows of plants in a farm with a view of a red farmhouse up the hill in Healdsburg, California
Neat rows of plants in a farm with a view of a red farmhouse up the hill in Healdsburg, California

Weather in May

May, the last month of the spring, in Healdsburg, is a pleasant month, with temperature in the range of an average high of 71.4°F (21.9°C) and an average low of 47.3°F (8.5°C).

Temperature

In Healdsburg, the average high-temperature slightly increases, from an enjoyable 66°F (18.9°C) in April, to an agreeable 71.4°F (21.9°C). In Healdsburg, the average low-temperature is 47.3°F (8.5°C).

Humidity

The average relative humidity in Healdsburg is 67%.

Rainfall

In May, the rain falls for 6.2 days. Throughout May, 0.98" (25mm) of precipitation is accumulated. Throughout the year, in Healdsburg, there are 81.2 rainfall days, and 19.84" (504mm) of precipitation is accumulated.

Snowfall

January, March through December are months without snowfall in Healdsburg.

Daylight

In May, the average length of the day is 14.3h.

Sunshine

In May, the average sunshine is 10.7h.

UV index

In Healdsburg, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to the UV radiation for the average person.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in May in Healdsburg?

The average high-temperature, in May, in Healdsburg, California, is 71.4°F (21.9°C), while the average low-temperature is 47.3°F (8.5°C).

What is the average humidity in May in Healdsburg?

The average relative humidity in May in Healdsburg is 67%.

How many days does it rain in May in Healdsburg?

In May, in Healdsburg, California, the rain falls for 6.2 days. Throughout May, 0.98" (25mm) of precipitation is accumulated.

When it does not snow in Healdsburg?

January, March through December are months without snowfall in Healdsburg, California.

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

In May, the average length of the day is 14.3h.

How many hours of sunshine does Healdsburg have in May?

The average sunshine in May in Healdsburg is 10.7h.

What is the UV index intensity in May in Healdsburg?

In May, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from the exposure to the Sun's UV radiation.

Average temperature in May
Healdsburg, CA

Average temperature in May - Healdsburg, CA
  • Average high temperature in May: 71.4°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is December (55°F).

  • Average low temperature in May: 47.3°F

The month with the highest average low temperature is August (55°F).
The coldest month (with the lowest average low temperature) is December (40.1°F).

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Average pressure in May
Healdsburg, CA

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

The month with the highest atmospheric pressure is January (30.13").
Months with the lowest atmospheric pressure are June, August and September (29.92").

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Average wind speed in May
Healdsburg, CA

Average wind speed in May - Healdsburg, CA
  • Average wind speed in May: 6.2mph

The windiest months (with the highest average wind speed) are April and May (6.2mph).
The calmest month (with the lowest average wind speed) is November (4.5mph).

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Average humidity in May
Healdsburg, CA

Average humidity in May - Healdsburg, CA
  • Average humidity in May: 67%

The month with the highest relative humidity is March (76%).
The month with the lowest relative humidity is September (57%).

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Average rainfall in May
Healdsburg, CA

Average rainfall in May - Healdsburg, CA
  • Average rainfall in May: 0.98"

The wettest month (with the highest rainfall) is February (4.33").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in May
Healdsburg, CA

Average rainfall days in May - Healdsburg, CA
  • Average rainfall days in May: 6.2 days

The month with the highest number of rainy days is March (14.2 days).
The month with the least rainy days is August (0.8 days).

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Average snowfall in May
Healdsburg, CA

Average snowfall in May - Healdsburg, CA
  • Average snowfall in May: 0"

The month with the highest snowfall is February (0.04").
Months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in May
Healdsburg, CA

Average snowfall days in May - Healdsburg, CA
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (0.1 days).
Months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).

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

Average daylight in May / Average sunshine in May - Healdsburg, CA
  • Average daylight in May: 14.3h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in May: 10.7h

The month with the most sunshine is July (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 5.6h).

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Average sunshine days in May
Healdsburg, CA

Average sunshine days in May - Healdsburg, CA
  • Average sunshine days in May: 23.4 days

The month with the most sunshine days is July (29.8 days).
The month with the least sunshine days is March (14.8 days).

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Average UV index in May
Healdsburg, CA

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

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

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Average cloud cover in May
Healdsburg, CA

Average cloud cover in May - Healdsburg, CA
  • Average cloud cover in May: 25

The month with the most cloud cover is March (Cloud cover 41).
Months with the least cloud cover are July and August (Cloud cover 6).

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Average visibility in May
Healdsburg, CA

Average visibility in May - Healdsburg, 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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