October weather forecastGuerneville, CA
October
Weather in October
October, like September, is an agreeable autumn month in Guerneville, California, with temperature in the range of an average low of 50.5°F (10.3°C) and an average high of 72.5°F (22.5°C).Temperature
The commencement of October includes a gentle temperature shift, with the average high-temperature dropping a bit from a moderately hot 79.9°F (26.6°C) in September to an agreeable 72.5°F (22.5°C). The anticipated average low-temperature for October in Guerneville, a fresh 50.5°F (10.3°C), shows a substantial deviation from the daytime maximums.Humidity
In October, the average relative humidity is 63%.Rainfall
In Guerneville, in October, during 3.6 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. In Guerneville, during the entire year, the rain falls for 60.1 days and collects up to 12.87" (327mm) of precipitation.Daylight
The average length of the day in October in Guerneville, California, is 11h and 11min.On the first day of the month, sunrise is at 7:08 am and sunset at 6:54 pm. On the last day of October, in Guerneville, sunrise is at 7:38 am and sunset at 6:12 pm PDT.
Sunshine
The average sunshine in October in Guerneville is 6.8h.UV index
In October, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.Note: The daily high UV index of 4 during October translates into the following recommendations:
Be vigilant - A duty to shield skin and eyes from injury exists. To guard against the harmful effects of the Sun, minimize exposure during midday. 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
Guerneville, CA
- Average high temperature in October: 72.5°F
The warmest month (with the highest average high temperature) is August (81°F).
The month with the lowest average high temperature is December (56.3°F).
- Average low temperature in October: 50.5°F
The months with the highest average low temperature are August and September (53.4°F).
The coldest month (with the lowest average low temperature) is December (41.4°F).
Average pressure in October
Guerneville, CA
- Average pressure in October: 29.99"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
Guerneville, CA
- Average wind speed in October: 5.3mph
The windiest month (with the highest average wind speed) is May (7.2mph).
The calmest month (with the lowest average wind speed) is November (5mph).
Average humidity in October
Guerneville, CA
- Average humidity in October: 63%
The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is September (62%).
Average rainfall in October
Guerneville, CA
- Average rainfall in October: 0.63"
The wettest month (with the highest rainfall) is February (3.27").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in October
Guerneville, CA
- Average rainfall days in October: 3.6 days
The month with the highest number of rainy days is March (10.3 days).
The month with the least rainy days is August (0.9 days).
Average daylight in October /
Average sunshine in October
Guerneville, 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 30min).
- Average sunshine in October: 6h and 48min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in October
Guerneville, CA
- Average sunshine days in October: 26.3 days
The month with the most sunshine days is July (28.9 days).
The month with the least sunshine days is February (19.9 days).
Average UV index in October
Guerneville, 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
Guerneville, CA
- Average cloud cover in October: 20
The month with the most cloud cover is March (Cloud cover 42).
The month with the least cloud cover is July (Cloud cover 11).
Average visibility in October
Guerneville, 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).
