Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
The average high-temperature during April registers at a still comfortable 64.9°F (18.3°C), closely corresponding to the preceding month. Palo Alto, in the month of April, anticipates a consistent average low-temperature of 47.1°F (8.4°C).Humidity
In Palo Alto, the average relative humidity in April is 71%.Rainfall
In April, in Palo Alto, the rain falls for 7.3 days. Throughout April, 0.59" (15mm) of precipitation is accumulated. In Palo Alto, during the entire year, the rain falls for 63.3 days and collects up to 9.53" (242mm) of precipitation.Daylight
In Palo Alto, the average length of the day in April is 13h and 11min.On the first day of April, sunrise is at 6:52 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:13 am and sunset at 7:57 pm PDT.
Sunshine
The average sunshine in April in Palo Alto, California, is 10.4h.UV index
April through October, with an average maximum UV index of 5, are months with the highest UV index. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index, 5 during April, leads to the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Frequently asked questions
What is the average April temperature in Palo Alto?
What is the average humidity in April in Palo Alto?
How much does it rain in Palo Alto in April?
How many hours of daylight does Palo Alto have in April?
When are sunrise and sunset in April in Palo Alto?
How long on average sun shines in April in Palo Alto?
When is the highest UV index in Palo Alto?
What is the UV index intensity in April in Palo Alto?
Average temperature in April
Palo Alto, CA
- Average high temperature in April: 64.9°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 April: 47.1°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 April
Palo Alto, CA
- Average pressure in April: 30.04"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 April
Palo Alto, CA
- Average wind speed in April: 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 April
Palo Alto, CA
- Average humidity in April: 71%
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 April
Palo Alto, CA
- Average rainfall in April: 0.59"
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 April
Palo Alto, CA
- Average rainfall days in April: 7.3 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 April /
Average sunshine in April
Palo Alto, CA
- Average daylight in April: 13h 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 April: 10h and 2min
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 April
Palo Alto, CA
- Average sunshine days in April: 22.3 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 April
Palo Alto, CA
- Average UV index in April: 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 April
Palo Alto, CA
- Average cloud cover in April: 26
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 April
Palo Alto, CA
- Average visibility in April: 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).
Palo Alto, California, USA
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