Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
Weather in October
Temperature
A subtle change in temperatures is noted in Sunnyvale as September gives way to October, with average highs reducing from a moderately hot 77.9°F (25.5°C) to a pleasant 71.8°F (22.1°C). Sunnyvale cools down to an average low-temperature of 53.6°F (12°C) throughout the month of October.Humidity
The months with the lowest humidity in Sunnyvale are September and October, with an average relative humidity of 63%.Rainfall
In October, in Sunnyvale, California, the rain falls for 2.4 days. Throughout October, 0.12" (3mm) of precipitation is accumulated. In Sunnyvale, during the entire year, the rain falls for 50 days and collects up to 3.9" (99mm) of precipitation.Daylight
In Sunnyvale, California, the average length of the day in October is 11h and 13min.On the first day of October in Sunnyvale, California, sunrise is at 7:04 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 October, the average sunshine in Sunnyvale is 7.1h.UV index
The average daily maximum UV index in October in Sunnyvale is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index of 5 during October translates into these guidelines:
Undertake precautions - It is suggested to shield oneself from sunburn. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Frequently asked questions
What is the usual temperature for Sunnyvale in October?
What is the least humid month in Sunnyvale?
What is the average humidity in October in Sunnyvale?
How much does it rain in Sunnyvale in October?
What is the average length of the day in October in Sunnyvale?
When is the sunrise / sunset in October in Sunnyvale?
How long on average sun shines in October in Sunnyvale?
How high is the UV index in October in Sunnyvale?
Average temperature in October
Sunnyvale, CA
- Average high temperature in October: 71.8°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is December (56.8°F).
- Average low temperature in October: 53.6°F
The month with the highest average low temperature is August (56.8°F).
The coldest months (with the lowest average low temperature) are February and December (44.2°F).
Average pressure in October
Sunnyvale, 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 and September (29.92"Hg).
Average wind speed in October
Sunnyvale, CA
- Average wind speed in October: 4.7mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest month (with the lowest average wind speed) is September (4.6mph).
Average humidity in October
Sunnyvale, CA
- Average humidity in October: 63%
The month with the highest relative humidity is March (73%).
The months with the lowest relative humidity are September and October (63%).
Average rainfall in October
Sunnyvale, CA
- Average rainfall in October: 0.12"
The wettest months (with the highest rainfall) are February and March (0.75").
The driest month (with the least rainfall) is July (0").
Average rainfall days in October
Sunnyvale, CA
- Average rainfall days in October: 2.4 days
The month with the highest number of rainy days is March (9.6 days).
The month with the least rainy days is August (0.4 days).
Average daylight in October /
Average sunshine in October
Sunnyvale, CA
- Average daylight in October: 11h and 1min
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 1min
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
Sunnyvale, CA
- Average sunshine days in October: 27.5 days
The month with the most sunshine days is August (30.1 days).
The month with the least sunshine days is March (19.9 days).
Average UV index in October
Sunnyvale, CA
- Average UV index in October: 5
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in October
Sunnyvale, CA
- Average cloud cover in October: 16
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 7).
Average visibility in October
Sunnyvale, 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).
Sunnyvale, California, USA
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