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
Hillsborough's shift into October is marked by a subtle change to a refreshing 67.1°F (19.5°C) from September's 70.2°F (21.2°C) in temperature. Throughout October, Hillsborough experiences a low-temperature average of 55.6°F (13.1°C).Humidity
The least humid month is October, with an average relative humidity of 70%.Rainfall
In October, the rain falls for 5.2 days. Throughout October, 0.67" (17mm) of precipitation is accumulated. In Hillsborough, during the entire year, the rain falls for 81.5 days and collects up to 12.8" (325mm) of precipitation.Daylight
In Hillsborough, California, the average length of the day in October is 11h and 13min.On the first day of October, sunrise is at 7:05 am and sunset at 6:52 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 6:11 pm PDT.
Sunshine
In October, the average sunshine is 7.1h.UV index
The average daily maximum UV index in October is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 4 during October translates into the following directions:
Be vigilant - Preventing sunburn is recommended. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are October temperatures?
What is the least humid month?
What is the average humidity in October?
How many days does it rain in October?
How many hours of daylight does Hillsborough have in October?
When are sunrise and sunset in October?
How many hours of sunshine does Hillsborough have in October?
What is the UV index intensity in October?
Average temperature in October
Hillsborough, CA
- Average high temperature in October: 67.1°F
The warmest month (with the highest average high temperature) is September (70.2°F).
The month with the lowest average high temperature is December (55.6°F).
- Average low temperature in October: 55.6°F
The month with the highest average low temperature is September (56.8°F).
The coldest month (with the lowest average low temperature) is January (47.5°F).
Average pressure in October
Hillsborough, CA
- Average pressure in October: 29.98"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).
Average wind speed in October
Hillsborough, CA
- Average wind speed in October: 6.4mph
The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is September (6.1mph).
Average humidity in October
Hillsborough, CA
- Average humidity in October: 70%
The month with the highest relative humidity is August (78%).
The month with the lowest relative humidity is October (70%).
Average rainfall in October
Hillsborough, CA
- Average rainfall in October: 0.67"
The wettest month (with the highest rainfall) is February (2.44").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days in October
Hillsborough, CA
- Average rainfall days in October: 5.2 days
The month with the highest number of rainy days is March (12.8 days).
The months with the least rainy days are June and July (2.4 days).
Average daylight in October /
Average sunshine in October
Hillsborough, 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: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in October
Hillsborough, CA
- Average sunshine days in October: 24.2 days
The month with the most sunshine days is July (24.6 days).
The month with the least sunshine days is March (16.3 days).
Average UV index in October
Hillsborough, CA
- Average UV index in October: 4
The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are February and December (UV index 3).
Average cloud cover in October
Hillsborough, CA
- Average cloud cover in October: 18
The month with the most cloud cover is March (Cloud cover 36).
The months with the least cloud cover are July and September (Cloud cover 15).
Average visibility in October
Hillsborough, 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).
Hillsborough, California, USA
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