October weather forecastHealdsburg, CA
October
Weather in October
October, like September, in Healdsburg, California, is a moderately hot autumn month, with an average temperature fluctuating between 50.4°F (10.2°C) and 73.8°F (23.2°C).Temperature
The arrival of October corresponds with a minor reduction in the average high-temperature, down from September's moderately hot 82.6°F (28.1°C) to a still warm 73.8°F (23.2°C). With a significant temperature contrast, nighttime temperatures hover around an average low of 50.4°F (10.2°C) in October.Humidity
In October, the average relative humidity is 60%.Rainfall
In October, the rain falls for 5.3 days. Throughout October, 1.06" (27mm) of precipitation is accumulated. Throughout the year, there are 81.2 rainfall days, and 19.84" (504mm) of precipitation is accumulated.Snowfall
In Healdsburg, snow does not fall in January, March through December.Daylight
In Healdsburg, the average length of the day in October is 11h and 10min.On the first day of the month, sunrise is at 7:08 am and sunset at 6:53 pm. On the last day of October, sunrise is at 7:38 am and sunset at 6:12 pm PDT.
Sunshine
The average sunshine in October is 6.9h.UV index
The average daily maximum UV index in October is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 4 in October interprets into the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Healdsburg, CA
- Average high temperature in October: 73.8°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is December (55°F).
- Average low temperature in October: 50.4°F
The month with the highest average low temperature is August (55°F).
The coldest month (with the lowest average low temperature) is December (40.1°F).
Average pressure in October
Healdsburg, 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
Healdsburg, CA
- Average wind speed in October: 4.7mph
The windiest months (with the highest average wind speed) are April and May (6.2mph).
The calmest month (with the lowest average wind speed) is November (4.5mph).
Average humidity in October
Healdsburg, CA
- Average humidity in October: 60%
The month with the highest relative humidity is March (76%).
The month with the lowest relative humidity is September (57%).
Average rainfall in October
Healdsburg, CA
- Average rainfall in October: 1.06"
The wettest month (with the highest rainfall) is February (4.33").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in October
Healdsburg, CA
- Average rainfall days in October: 5.3 days
The month with the highest number of rainy days is March (14.2 days).
The month with the least rainy days is August (0.8 days).
Average snowfall in October
Healdsburg, CA
- Average snowfall in October: 0"
The month with the highest snowfall is February (0.04").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in October
Healdsburg, CA
- Average snowfall days in October: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in October /
Average sunshine in October
Healdsburg, 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 54min
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 36min).
Average sunshine days in October
Healdsburg, CA
- Average sunshine days in October: 24.6 days
The month with the most sunshine days is July (29.8 days).
The month with the least sunshine days is March (14.8 days).
Average UV index in October
Healdsburg, 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
Healdsburg, CA
- Average cloud cover in October: 18
The month with the most cloud cover is March (Cloud cover 41).
The months with the least cloud cover are July and August (Cloud cover 6).
Average visibility in October
Healdsburg, 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).
