October weather forecastRio Vista, CA
October
Weather in October
October, like September, in Rio Vista, California, is a moderately hot autumn month, with an average temperature fluctuating between 54.1°F (12.3°C) and 76.5°F (24.7°C).Temperature
The shift from September to October corresponds with a decrease in the average high-temperature, down to a warm 76.5°F (24.7°C) from a hot 86.9°F (30.5°C). Following the sharp contrast to daytime warmth, an average nighttime temperature of 54.1°F (12.3°C) gets registered during October.Humidity
In Rio Vista, the average relative humidity in October is 53%.Rainfall
In Rio Vista, during October, the rain falls for 4.2 days and regularly aggregates up to 0.59" (15mm) of precipitation. In Rio Vista, during the entire year, the rain falls for 68.7 days and collects up to 11.18" (284mm) of precipitation.Daylight
In Rio Vista, the average length of the day in October is 11h and 11min.On the first day of October, sunrise is at 7:03 am and sunset at 6:49 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 6:08 pm PDT.
Sunshine
The average sunshine in October is 7.2h.UV index
The average daily maximum UV index in October is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum daily UV index of 4 during October morphs into the following directions:
Act with care - The need to guard against sun damage is communicated. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce 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
Rio Vista, CA
- Average high temperature in October: 76.5°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is December (55°F).
- Average low temperature in October: 54.1°F
The month with the highest average low temperature is September (58.1°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).
Average pressure in October
Rio Vista, CA
- Average pressure in October: 29.99"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
Rio Vista, CA
- Average wind speed in October: 5.7mph
The windiest month (with the highest average wind speed) is June (7.6mph).
The calmest month (with the lowest average wind speed) is November (4.7mph).
Average humidity in October
Rio Vista, CA
- Average humidity in October: 53%
The months with the highest relative humidity are January and March (74%).
The month with the lowest relative humidity is September (49%).
Average rainfall in October
Rio Vista, CA
- Average rainfall in October: 0.59"
The wettest month (with the highest rainfall) is February (2.17").
The driest month (with the least rainfall) is August (0").
Average rainfall days in October
Rio Vista, CA
- Average rainfall days in October: 4.2 days
The month with the highest number of rainy days is March (13 days).
The month with the least rainy days is August (0.7 days).
Average daylight in October /
Average sunshine in October
Rio Vista, 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 12min
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 54min).
Average sunshine days in October
Rio Vista, CA
- Average sunshine days in October: 25.9 days
The month with the most sunshine days is August (29.9 days).
The month with the least sunshine days is March (17.3 days).
Average UV index in October
Rio Vista, 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
Rio Vista, CA
- Average cloud cover in October: 14
The months with the most cloud cover are March and December (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in October
Rio Vista, 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).
