October weather forecastVallejo, CA
October
Weather in October
October, the same as September, in Vallejo, California, is another pleasant autumn month, with temperature in the range of an average high of 72.9°F (22.7°C) and an average low of 54°F (12.2°C).Temperature
October signifies a gentle decline in Vallejo's average high-temperature, easing from a moderately hot 80.1°F (26.7°C) in September to a pleasant 72.9°F (22.7°C). In Vallejo, an average temperature of 54°F (12.2°C) is noted during October nights.Humidity
The months with the lowest humidity are September and October, with an average relative humidity of 60%.Rainfall
In Vallejo, in October, it is raining for 3.4 days, with typically 0.2" (5mm) of accumulated precipitation. In Vallejo, during the entire year, the rain falls for 56.9 days and collects up to 4.88" (124mm) of precipitation.Daylight
In October, the average length of the day in Vallejo is 11h and 11min.On the first day of October in Vallejo, sunrise is at 7:05 am and sunset at 6:51 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 6:10 pm PDT.
Sunshine
In October, the average sunshine is 7h.UV index
In October, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high UV index of 4 in October translates into the following recommendations:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Vallejo, CA
- Average high temperature in October: 72.9°F
The warmest months (with the highest average high temperature) are July and September (80.1°F).
The month with the lowest average high temperature is December (55.4°F).
- Average low temperature in October: 54°F
The month with the highest average low temperature is August (56.5°F).
The coldest month (with the lowest average low temperature) is January (43°F).
Average pressure in October
Vallejo, CA
- Average pressure in October: 29.98"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in October
Vallejo, CA
- Average wind speed in October: 5mph
The windiest month (with the highest average wind speed) is May (7.1mph).
The calmest month (with the lowest average wind speed) is November (4.6mph).
Average humidity in October
Vallejo, CA
- Average humidity in October: 60%
The month with the highest relative humidity is March (75%).
The months with the lowest relative humidity are September and October (60%).
Average rainfall in October
Vallejo, CA
- Average rainfall in October: 0.2"
The wettest month (with the highest rainfall) is February (1.14").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in October
Vallejo, CA
- Average rainfall days in October: 3.4 days
The month with the highest number of rainy days is March (10.2 days).
The month with the least rainy days is August (0.9 days).
Average daylight in October /
Average sunshine in October
Vallejo, CA
- Average daylight in October: 11h and 12min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in October: 7h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in October
Vallejo, CA
- Average sunshine days in October: 25.5 days
The month with the most sunshine days is July (27.2 days).
The month with the least sunshine days is March (18.8 days).
Average UV index in October
Vallejo, CA
- Average UV index in October: 4
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in October
Vallejo, CA
- Average cloud cover in October: 17
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in October
Vallejo, 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).
