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 snowfall in October
- Average snowfall 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
The advent of October brings a slight shift in average high-temperature, moving from a pleasant 68.9°F (20.5°C) in September to a comfortable 63.1°F (17.3°C). Throughout October, Arcata witnesses a nighttime temperature average of 49.1°F (9.5°C).Humidity
October is the least humid month, with an average relative humidity of 75%.Rainfall
In October, in Arcata, the rain falls for 8 days. Throughout October, 2.05" (52mm) of precipitation is accumulated. Throughout the year, in Arcata, there are 114.7 rainfall days, and 29.37" (746mm) of precipitation is accumulated.Snowfall
In Arcata, snow does not fall in January, March through December.Daylight
In October, the average length of the day is 11h and 6min.On the first day of October in Arcata, sunrise is at 7:13 am and sunset at 6:57 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 6:13 pm PDT.
Sunshine
In Arcata, the average sunshine in October is 6.7h.UV index
In October, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: The daily maximum UV index of 4 in October interprets into the following advice:
Exercise prevention - Protecting skin and eyes from harm is required. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Arcata in October?
What is the least humid month in Arcata?
What is the average humidity in October in Arcata?
How many days does it rain in October in Arcata?
When it does not snow in Arcata?
What is the average length of the day in October in Arcata?
What time are sunrise and sunset in October in Arcata?
How many hours of sunshine does Arcata have in October?
What is the UV index reading in October in Arcata?
Average temperature in October
Arcata, CA
- Average high temperature in October: 63.1°F
The warmest month (with the highest average high temperature) is August (69.6°F).
The month with the lowest average high temperature is December (52.7°F).
- Average low temperature in October: 49.1°F
The month with the highest average low temperature is August (52.3°F).
The coldest month (with the lowest average low temperature) is February (41.9°F).
Average pressure in October
Arcata, CA
- Average pressure in October: 30.03"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is August (29.96"Hg).
Average wind speed in October
Arcata, CA
- Average wind speed in October: 6.8mph
The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in October
Arcata, CA
- Average humidity in October: 75%
The month with the highest relative humidity is March (82%).
The month with the lowest relative humidity is October (75%).
Average rainfall in October
Arcata, CA
- Average rainfall in October: 2.05"
The wettest month (with the highest rainfall) is December (5.31").
The driest month (with the least rainfall) is July (0.12").
Average rainfall days in October
Arcata, CA
- Average rainfall days in October: 8 days
The month with the highest number of rainy days is March (17.5 days).
The month with the least rainy days is August (2.1 days).
Average snowfall in October
Arcata, CA
- Average snowfall in October: 0"
The month with the highest snowfall is February (0.39").
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
Arcata, CA
- Average snowfall days in October: 0 days
The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in October /
Average sunshine in October
Arcata, CA
- Average daylight in October: 11h and 1min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in October: 6h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in October
Arcata, CA
- Average sunshine days in October: 22 days
The month with the most sunshine days is July (28.3 days).
The month with the least sunshine days is March (12.1 days).
Average UV index in October
Arcata, CA
- Average UV index in October: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 3).
Average cloud cover in October
Arcata, CA
- Average cloud cover in October: 25
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in October
Arcata, CA
- Average visibility in October: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
Arcata, California, USA
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