April weather forecastSan Martin, CA
April
Weather in April
April, the same as March, is another refreshing spring month in San Martin, California, with temperature in the range of an average low of 42.6°F (5.9°C) and an average high of 67.5°F (19.7°C).Temperature
San Martin experiences a subtle adjustment in high-temperatures to a still comfortable 67.5°F (19.7°C) with the onset of April, maintaining near parity with March's 62.6°F (17°C). With a notable difference from peak temperatures, an average of 42.6°F (5.9°C) marks the nights in April.Humidity
The average relative humidity in April is 69%.Rainfall
In April, the rain falls for 7.8 days. Throughout April, 0.87" (22mm) of precipitation is accumulated. Throughout the year, there are 70.6 rainfall days, and 10.83" (275mm) of precipitation is accumulated.Daylight
The average length of the day in April is 13h and 11min.On the first day of the month, sunrise is at 6:50 am and sunset at 7:29 pm. On the last day of April, sunrise is at 6:11 am and sunset at 7:55 pm PDT.
Sunshine
In San Martin, the average sunshine in April is 10.4h.UV index
In April, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: In April, the UV index of 5 transforms into the following advice:
Take necessary precautions - Defending against sun damage is advocated. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
San Martin, CA
- Average high temperature in April: 67.5°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is December (55.8°F).
- Average low temperature in April: 42.6°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).
Average pressure in April
San Martin, CA
- Average pressure in April: 30.03"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in April
San Martin, CA
- Average wind speed in April: 5.1mph
The windiest month (with the highest average wind speed) is May (5.4mph).
The calmest month (with the lowest average wind speed) is November (3.9mph).
Average humidity in April
San Martin, CA
- Average humidity in April: 69%
The month with the highest relative humidity is March (74%).
The months with the lowest relative humidity are July and September (55%).
Average rainfall in April
San Martin, CA
- Average rainfall in April: 0.87"
The wettest month (with the highest rainfall) is December (1.97").
The driest months (with the least rainfall) are June, July and August (0.08").
Average rainfall days in April
San Martin, CA
- Average rainfall days in April: 7.8 days
The month with the highest number of rainy days is March (12.4 days).
The month with the least rainy days is August (1 days).
Average daylight in April /
Average sunshine in April
San Martin, CA
- Average daylight in April: 13h and 12min
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 42min).
- Average sunshine in April: 10h and 24min
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 April
San Martin, CA
- Average sunshine days in April: 21.1 days
The month with the most sunshine days is August (28.7 days).
The month with the least sunshine days is March (16.8 days).
Average UV index in April
San Martin, CA
- Average UV index in April: 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 April
San Martin, CA
- Average cloud cover in April: 28
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 5).
Average visibility in April
San Martin, 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).
