May weather forecast
East Palo Alto, CA

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Weather in May

The last month of the spring, May, is a pleasant month in East Palo Alto, California, with an average temperature varying between 68.2°F (20.1°C) and 49.6°F (9.8°C).

Temperature

The onset of May manifests an average high-temperature of an agreeable 68.2°F (20.1°C), demonstrating a minor variation from the preceding month. During May, East Palo Alto experiences a consistent low-temperature average of 49.6°F (9.8°C).

Humidity

In May, the average relative humidity in East Palo Alto, California, is 69%.

Rainfall

In East Palo Alto, California, in May, during 4.4 rainfall days, 0.47" (12mm) of precipitation is typically accumulated. In East Palo Alto, during the entire year, the rain falls for 63.3 days and collects up to 9.53" (242mm) of precipitation.

Daylight

In East Palo Alto, the average length of the day in May is 14h and 12min.
On the first day of the month, sunrise is at 6:12 am and sunset at 7:58 pm. On the last day of May, in East Palo Alto, sunrise is at 5:49 am and sunset at 8:23 pm PDT.

Sunshine

The average sunshine in May is 10.9h.

UV index

April through October, with an average maximum UV index of 5, are months with the highest UV index. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: In May, the maximum UV index of 5 transforms into these recommendations:
Ensure safety - Recommendations to avert sunburn are presented. When the Sun is at its strongest around midday, find shade and limit exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature in East Palo Alto?

May temperatures in East Palo Alto vary between a high-temperature of 68.2°F (20.1°C) and a low-temperature of 49.6°F (9.8°C).

What is the average humidity in May in East Palo Alto?

In East Palo Alto, the average relative humidity in May is 69%.

How many days does it rain in May in East Palo Alto?

In May, in East Palo Alto, the rain falls for 4.4 days. Throughout May, 0.47" (12mm) of precipitation is accumulated.

What is the average length of the day in May in East Palo Alto?

In East Palo Alto, California, the average day length in May is 14h and 12min.

What time are sunrise and sunset in May in East Palo Alto?

On the first day of May in East Palo Alto, sunrise is at 6:12 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 8:23 pm PDT.

How long on average sun shines in May in East Palo Alto?

In East Palo Alto, the average sunshine duration in May is 10.9h.

What are the months with the highest UV index in East Palo Alto?

April through October, with an average maximum UV index of 5, are months with the highest UV index in East Palo Alto.

What is the UV index reading in May in East Palo Alto?

In East Palo Alto, California, 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 the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
East Palo Alto, CA

Average temperature in May - East Palo Alto, CA
  • Average high temperature in May: 68.2°F

The warmest months (with the highest average high temperature) are July and August (77.5°F).
The month with the lowest average high temperature is December (56.3°F).

  • Average low temperature in May: 49.6°F

The month with the highest average low temperature is August (57°F).
The coldest months (with the lowest average low temperature) are January and February (45.1°F).

Average pressure in May
East Palo Alto, CA

Average pressure in May - East Palo Alto, 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
East Palo Alto, CA

Average wind speed in May - East Palo Alto, CA
  • Average wind speed in May: 6.5mph

The windiest months (with the highest average wind speed) are April and May (6.5mph).
The calmest months (with the lowest average wind speed) are September and October (4.9mph).

Average humidity in May
East Palo Alto, CA

Average humidity in May - East Palo Alto, CA
  • Average humidity in May: 69%

The month with the highest relative humidity is March (74%).
The months with the lowest relative humidity are September and October (65%).

Average rainfall in May
East Palo Alto, CA

Average rainfall in May - East Palo Alto, CA
  • Average rainfall in May: 0.47"

The wettest month (with the highest rainfall) is February (2.01").
The driest month (with the least rainfall) is July (0").

Average rainfall days in May
East Palo Alto, CA

Average rainfall days in May - East Palo Alto, CA
  • Average rainfall days in May: 4.4 days

The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is August (0.6 days).

Average daylight in May /
Average sunshine in May
East Palo Alto, CA

Average daylight in May / Average sunshine in May - East Palo Alto, 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 54min).

Average sunshine days in May
East Palo Alto, CA

Average sunshine days in May - East Palo Alto, CA
  • Average sunshine days in May: 25.8 days

The month with the most sunshine days is July (30.2 days).
The month with the least sunshine days is March (18 days).

Average UV index in May
East Palo Alto, CA

Average UV index in May - East Palo Alto, CA
  • Average UV index in May: 5

The months with the highest UV index are April, May, June, July, August, September and October (UV index 5).
The months with the lowest UV index are February, November and December (UV index 3).

Average cloud cover in May
East Palo Alto, CA

Average cloud cover in May - East Palo Alto, CA
  • Average cloud cover in May: 23

The months with the most cloud cover are March and December (Cloud cover 34).
The month with the least cloud cover is July (Cloud cover 6).

Average visibility in May
East Palo Alto, CA

Average visibility in May - East Palo Alto, 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).

East Palo Alto, California, USA

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