October weather forecastNapa Junction, CA
October
Weather in October
October, like September, in Napa Junction, California, is a moderately hot autumn month, with an average temperature ranging between min 53.2°F (11.8°C) and max 73.6°F (23.1°C).Temperature
As October commences, the average high-temperature subtly reduces, transitioning from a warm 81.7°F (27.6°C) in September to a still moderately hot 73.6°F (23.1°C). In October, Napa Junction experiences a temperature dip to an average of 53.2°F (11.8°C) at night.Humidity
The average relative humidity in October is 59%.Rainfall
In Napa Junction, in October, it is raining for 4.6 days, with typically 0.67" (17mm) of accumulated precipitation. Throughout the year, there are 68.2 rainfall days, and 11.93" (303mm) of precipitation is accumulated.Daylight
In Napa Junction, the average length of the day in October is 11h and 11min.On the first day of the month, sunrise is at 7:05 am and sunset at 6:51 pm. On the last day of October, sunrise is at 7:34 am and sunset at 6:10 pm PDT.
Sunshine
In October, the average sunshine in Napa Junction is 7.1h.UV index
In October, the average daily maximum UV index in Napa Junction, California, is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index of 4 during October leads to these instructions:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Napa Junction, CA
- Average high temperature in October: 73.6°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is December (54.9°F).
- Average low temperature in October: 53.2°F
The month with the highest average low temperature is August (56.5°F).
The coldest months (with the lowest average low temperature) are January and December (42.3°F).
Average pressure in October
Napa Junction, CA
- Average pressure in October: 29.98"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
Napa Junction, CA
- Average wind speed in October: 4.8mph
The windiest month (with the highest average wind speed) is May (6.6mph).
The calmest month (with the lowest average wind speed) is November (4.5mph).
Average humidity in October
Napa Junction, CA
- Average humidity in October: 59%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is September (58%).
Average rainfall in October
Napa Junction, CA
- Average rainfall in October: 0.67"
The wettest month (with the highest rainfall) is February (2.32").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in October
Napa Junction, CA
- Average rainfall days in October: 4.6 days
The month with the highest number of rainy days is March (11.9 days).
The month with the least rainy days is August (0.9 days).
Average daylight in October /
Average sunshine in October
Napa Junction, 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 6min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in October
Napa Junction, CA
- Average sunshine days in October: 25.5 days
The months with the most sunshine days are July and August (29.1 days).
The month with the least sunshine days is March (18.3 days).
Average UV index in October
Napa Junction, 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
Napa Junction, CA
- Average cloud cover in October: 16
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 7).
Average visibility in October
Napa Junction, 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).
