October weather forecastSan Jose, CA
October
Weather in October
The month of October in San Jose is a charming mixture of extended summer and early autumn. The weather amalgamates warm temperatures with a gradual increase in rainfall to 0.16in and a slight drop in daylight hours. The wind speed remains consistent, averagely blowing at a speed of 4.4mph (7.1km/h). October accommodates the seamless transition from summer to autumn with a blend of warm, sunny days and cool, crisp evenings.Temperature
The shift from September to October includes a minor decrease in the average high-temperature, lightly dropping from a warm 79.7°F (26.5°C) to an agreeable 72.7°F (22.6°C). Nightly temperatures drop to an average low of 52.7°F (11.5°C) in October.Humidity
The average relative humidity in October is 62%.Rainfall
In San Jose, during October, the rain falls for 2.5 days and regularly aggregates up to 0.16" (4mm) of precipitation. Throughout the year, there are 51.5 rainfall days, and 4.06" (103mm) of precipitation is accumulated.Daylight
In October, the average length of the day is 11h and 13min.On the first day of October, sunrise is at 7:03 am and sunset at 6:50 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 6:10 pm PDT.
Sunshine
In San Jose, the average sunshine in October is 7.2h.UV index
In October, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: In October, the maximum UV index of 4 translates into these guidelines:
Undertake precautions - Obligation exists to protect against skin and eye damage. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
San Jose, CA
- Average high temperature in October: 72.7°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is December (56.5°F).
- Average low temperature in October: 52.7°F
The month with the highest average low temperature is August (56.5°F).
The coldest month (with the lowest average low temperature) is December (43°F).
Average pressure in October
San Jose, CA
- Average pressure in October: 29.98"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in October
San Jose, CA
- Average wind speed in October: 4.4mph
The windiest months (with the highest average wind speed) are April and May (5.8mph).
The calmest months (with the lowest average wind speed) are September and October (4.4mph).
Average humidity in October
San Jose, CA
- Average humidity in October: 62%
The month with the highest relative humidity is March (73%).
The months with the lowest relative humidity are July and September (60%).
Average rainfall in October
San Jose, CA
- Average rainfall in October: 0.16"
The wettest month (with the highest rainfall) is March (0.83").
The driest months (with the least rainfall) are June, July and August (0.04").
Average rainfall days in October
San Jose, CA
- Average rainfall days in October: 2.5 days
The month with the highest number of rainy days is March (9.8 days).
The month with the least rainy days is August (0.4 days).
Average daylight in October /
Average sunshine in October
San Jose, 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 12min
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 October
San Jose, CA
- Average sunshine days in October: 26.8 days
The month with the most sunshine days is August (29.7 days).
The month with the least sunshine days is March (19.5 days).
Average UV index in October
San Jose, 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 Jose, CA
- Average cloud cover in October: 15
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 6).
Average visibility in October
San Jose, 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).
