May weather forecast
Campbell, CA

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The long roads in the crowded city of Campbell, California
The long roads in the crowded city of Campbell, California

Weather in May

May, the last month of the spring in Campbell, is a pleasant month, with an average temperature ranging between max 69.6°F (20.9°C) and min 48.4°F (9.1°C).

Temperature

The start of May marks an average high-temperature of a pleasant 69.6°F (20.9°C), hardly distinguishable from the conditions in April. Throughout May, the average low-temperature in Campbell, California, dips to a frosty 48.4°F (9.1°C).

Humidity

In Campbell, the average relative humidity in May is 68%.

Rainfall

In Campbell, in May, it is raining for 4.5 days, with typically 0.51" (13mm) of accumulated precipitation. In Campbell, during the entire year, the rain falls for 68.6 days and collects up to 11.57" (294mm) of precipitation.

Daylight

In Campbell, the average length of the day in May is 14h and 11min.
On the first day of May, sunrise is at 6:11 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 8:22 pm PDT.

Sunshine

In Campbell, the average sunshine in May is 11h.

UV index

In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The UV index of 5 during May leads to these advisories:
Undertake protective steps - Preventing sun damage is advised. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

Frequently asked questions

What is the temperature in May in Campbell?

In May, in Campbell, the average high-temperature is 69.6°F (20.9°C), and the average low-temperature is 48.4°F (9.1°C).

What is the average humidity in May in Campbell?

In May, the average relative humidity is 68%.

How much does it rain in Campbell in May?

In Campbell, California, during May, the rain falls for 4.5 days and regularly aggregates up to 0.51" (13mm) of precipitation.

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

In May, the average day length is 14h and 11min.

When is the sunrise / sunset in May in Campbell?

On the first day of May in Campbell, sunrise is at 6:11 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 8:22 pm PDT.

How many hours of sunshine does Campbell have in May?

In Campbell, the average sunshine duration in May is 11h.

What is the UV index intensity in May in Campbell?

In May, the average daily maximum UV index is 5. A UV Index estimate 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
Campbell, CA

Average temperature in May - Campbell, CA
  • Average high temperature in May: 69.6°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is December (56.7°F).

  • Average low temperature in May: 48.4°F

The month with the highest average low temperature is August (55.9°F).
The coldest month (with the lowest average low temperature) is February (43.5°F).

Average pressure in May
Campbell, CA

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

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

Average wind speed in May
Campbell, CA

Average wind speed in May - Campbell, CA
  • Average wind speed in May: 5.8mph

The windiest month (with the highest average wind speed) is April (5.9mph).
The calmest months (with the lowest average wind speed) are August, September, October and November (4.5mph).

Average humidity in May
Campbell, CA

Average humidity in May - Campbell, CA
  • Average humidity in May: 68%

The month with the highest relative humidity is March (74%).
The months with the lowest relative humidity are July and September (62%).

Average rainfall in May
Campbell, CA

Average rainfall in May - Campbell, CA
  • Average rainfall in May: 0.51"

The wettest month (with the highest rainfall) is February (2.2").
The driest months (with the least rainfall) are July and August (0.04").

Average rainfall days in May
Campbell, CA

Average rainfall days in May - Campbell, CA
  • Average rainfall days in May: 4.5 days

The month with the highest number of rainy days is March (12.5 days).
The month with the least rainy days is August (0.9 days).

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

Average daylight in May / Average sunshine in May - Campbell, 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: 11h and 0min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).

Average sunshine days in May
Campbell, CA

Average sunshine days in May - Campbell, CA
  • Average sunshine days in May: 25.3 days

The month with the most sunshine days is August (29.2 days).
The month with the least sunshine days is March (17.3 days).

Average UV index in May
Campbell, CA

Average UV index in May - Campbell, 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).

Average cloud cover in May
Campbell, CA

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

The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 6).

Average visibility in May
Campbell, CA

Average visibility in May - Campbell, 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).

Campbell, California, USA

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