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
San Dimas greets April with an average high-temperature of a still pleasant 72.3°F (22.4°C), marking a slight deviation from the preceding month. San Dimas in April observes a substantial swing from the daily highs, with average nighttime temperatures of 50.2°F (10.1°C).Humidity
In San Dimas, the average relative humidity in April is 53%.Rainfall
In San Dimas, in April, it is raining for 4.8 days, with typically 0.47" (12mm) of accumulated precipitation. Throughout the year, there are 45.2 rainfall days, and 6.5" (165mm) of precipitation is accumulated.Daylight
In April, the average length of the day is 13h and 4min.On the first day of April, sunrise is at 6:37 am and sunset at 7:12 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 7:34 pm PDT.
Sunshine
The average sunshine in April is 11.4h.UV index
In San Dimas, the average daily maximum UV index in April is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: An average UV index of 5 in April transforms into this advice:
Ensure safety - Imperative it is to shield skin and eyes from damage. The Sun's radiation is especially intense around midday; try to stay in shade during this period. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average April temperature?
What is the average humidity in April?
How much does it rain in April?
How many hours of daylight does San Dimas have in April?
When is the sunrise / sunset in April?
How long on average sun shines in April?
What is the UV index intensity in April?
Average temperature in April
San Dimas, CA
- Average high temperature in April: 72.3°F
The warmest month (with the highest average high temperature) is August (89.4°F).
The month with the lowest average high temperature is December (62.4°F).
- Average low temperature in April: 50.2°F
The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is December (45.5°F).
Average pressure in April
San Dimas, CA
- Average pressure in April: 29.96"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in April
San Dimas, CA
- Average wind speed in April: 5.7mph
The windiest months (with the highest average wind speed) are April and May (5.7mph).
The calmest month (with the lowest average wind speed) is September (4.3mph).
Average humidity in April
San Dimas, CA
- Average humidity in April: 53%
The months with the highest relative humidity are March and May (55%).
The months with the lowest relative humidity are August and November (45%).
Average rainfall in April
San Dimas, CA
- Average rainfall in April: 0.47"
The wettest month (with the highest rainfall) is February (1.46").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in April
San Dimas, CA
- Average rainfall days in April: 4.8 days
The month with the highest number of rainy days is March (6.3 days).
The month with the least rainy days is June (1.2 days).
Average daylight in April /
Average sunshine in April
San Dimas, CA
- Average daylight in April: 13h and 1min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in April: 11h and 2min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 7h and 0min).
Average sunshine days in April
San Dimas, CA
- Average sunshine days in April: 24.7 days
The month with the most sunshine days is June (27.8 days).
The month with the least sunshine days is February (22 days).
Average UV index in April
San Dimas, CA
- Average UV index in April: 5
The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in April
San Dimas, CA
- Average cloud cover in April: 16
The months with the most cloud cover are March and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in April
San Dimas, 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).
San Dimas, California, USA
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