October weather forecastSan Ramon, CA
October
Weather in October
October, like September, in San Ramon, California, is another warm autumn month, with an average temperature ranging between max 74.3°F (23.5°C) and min 53.4°F (11.9°C).Temperature
The transition into October subtly indicates a reduction in the average high-temperature, down to a still warm 74.3°F (23.5°C) from September's moderately hot 82°F (27.8°C). Throughout the month of October, San Ramon witnesses an average low-temperature of 53.4°F (11.9°C).Humidity
The average relative humidity in October in San Ramon is 58%.Rainfall
In San Ramon, during October, the rain falls for 4.3 days and regularly aggregates up to 0.55" (14mm) of precipitation. Throughout the year, there are 67.2 rainfall days, and 10.98" (279mm) of precipitation is accumulated.Daylight
In October, the average length of the day in San Ramon, California, is 11h and 12min.On the first day of October, sunrise is at 7:04 am and sunset at 6:50 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 6:09 pm PDT.
Sunshine
In October, the average sunshine is 7.1h.UV index
The average daily maximum UV index in October is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: In October, the maximum UV index of 4 suggests this advice:
Prioritize safety - Suggestions to prevent sun damage are offered. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
San Ramon, CA
- Average high temperature in October: 74.3°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is December (55.9°F).
- Average low temperature in October: 53.4°F
The month with the highest average low temperature is September (56.5°F).
The coldest month (with the lowest average low temperature) is December (42.1°F).
Average pressure in October
San Ramon, CA
- Average pressure in October: 29.98"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 October
San Ramon, CA
- Average wind speed in October: 4.6mph
The windiest month (with the highest average wind speed) is May (6.7mph).
The calmest month (with the lowest average wind speed) is November (4.2mph).
Average humidity in October
San Ramon, CA
- Average humidity in October: 58%
The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is September (57%).
Average rainfall in October
San Ramon, CA
- Average rainfall in October: 0.55"
The wettest month (with the highest rainfall) is February (2.28").
The driest month (with the least rainfall) is July (0").
Average rainfall days in October
San Ramon, CA
- Average rainfall days in October: 4.3 days
The month with the highest number of rainy days is March (12.6 days).
The month with the least rainy days is August (0.6 days).
Average daylight in October /
Average sunshine in October
San Ramon, CA
- Average daylight in October: 11h 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 36min).
- Average sunshine in October: 7h and 6min
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 48min).
Average sunshine days in October
San Ramon, CA
- Average sunshine days in October: 25.6 days
The month with the most sunshine days is July (29.9 days).
The month with the least sunshine days is March (17.5 days).
Average UV index in October
San Ramon, CA
- Average UV index in October: 4
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 October
San Ramon, CA
- Average cloud cover in October: 16
The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 6).
Average visibility in October
San Ramon, 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).
