October weather forecastSan Ysidro, CA
October
Weather in October
October, like September, in San Ysidro, California, is a moderately hot autumn month, with an average temperature fluctuating between 61.2°F (16.2°C) and 75.6°F (24.2°C).Temperature
The arrival of October brings an average high-temperature of a still warm 75.6°F (24.2°C), subtly diverging from September's 80.1°F (26.7°C). San Ysidro, in October, observes a steady average low-temperature of 61.2°F (16.2°C).Humidity
In San Ysidro, the average relative humidity in October is 61%.Rainfall
In San Ysidro, during October, the rain falls for 2.8 days and regularly aggregates up to 0.16" (4mm) of precipitation. In San Ysidro, during the entire year, the rain falls for 57.8 days and collects up to 7.28" (185mm) of precipitation.Daylight
In October, the average length of the day is 11h and 22min.On the first day of the month, sunrise is at 6:42 am and sunset at 6:32 pm. On the last day of October, sunrise is at 7:05 am and sunset at 5:58 pm PDT.
Sunshine
The average sunshine in October is 8.8h.UV index
The average daily maximum UV index in October is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum high UV index of 5 in October translates into the following recommendations:
Take precautions - Protection against sunburn is recommended. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
San Ysidro, CA
- Average high temperature in October: 75.6°F
The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (64°F).
- Average low temperature in October: 61.2°F
The month with the highest average low temperature is August (66.7°F).
The coldest month (with the lowest average low temperature) is February (50.2°F).
Average pressure in October
San Ysidro, CA
- Average pressure in October: 29.93"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.88"Hg).
Average wind speed in October
San Ysidro, CA
- Average wind speed in October: 4.8mph
The windiest months (with the highest average wind speed) are April and May (6mph).
The calmest month (with the lowest average wind speed) is October (4.8mph).
Average humidity in October
San Ysidro, CA
- Average humidity in October: 61%
The month with the highest relative humidity is May (68%).
The month with the lowest relative humidity is November (55%).
Average rainfall in October
San Ysidro, CA
- Average rainfall in October: 0.16"
The wettest month (with the highest rainfall) is February (1.5").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in October
San Ysidro, CA
- Average rainfall days in October: 2.8 days
The month with the highest number of rainy days is March (7.5 days).
The month with the least rainy days is June (1.8 days).
Average daylight in October /
Average sunshine in October
San Ysidro, CA
- Average daylight in October: 11h and 24min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in October: 8h and 48min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in October
San Ysidro, CA
- Average sunshine days in October: 26.2 days
The month with the most sunshine days is June (27.8 days).
The month with the least sunshine days is February (20.8 days).
Average UV index in October
San Ysidro, CA
- Average UV index in October: 5
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 4).
Average cloud cover in October
San Ysidro, CA
- Average cloud cover in October: 14
The months with the most cloud cover are March and December (Cloud cover 25).
The month with the least cloud cover is August (Cloud cover 8).
Average visibility in October
San Ysidro, CA
- Average visibility in October: 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).
