Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
August brings the highest temperatures, with an average high of 69.6°F (20.9°C) and an average low of 52.3°F (11.3°C).Humidity
The average relative humidity in August in Arcata, California, is 79%.Rainfall
In August, in Arcata, the rain falls for 2.1 days. Throughout August, 0.16" (4mm) of precipitation is accumulated. In Arcata, during the entire year, the rain falls for 114.7 days and collects up to 29.37" (746mm) of precipitation.Snowfall
January, March through December are months without snowfall.Daylight
In Arcata, the average length of the day in August is 13h and 45min.On the first day of August, sunrise is at 6:13 am and sunset at 8:31 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 7:49 pm PDT.
Sunshine
In Arcata, the average sunshine in August is 11.5h.UV index
In August, 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 the average person.Note: The UV index of 4 in August translates into these instructions:
Take necessary precautions - Suggestions to elude sunburn are provided. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the hottest in Arcata?
What is the usual temperature for Arcata in August?
What is the average humidity in August in Arcata?
How much does it rain in Arcata in August?
When it does not snow in Arcata?
How many hours of daylight does Arcata have in August?
When is the sunrise / sunset in August in Arcata?
How many hours of sunshine does Arcata have in August?
What is the UV index intensity in August in Arcata?
Average temperature in August
Arcata, CA
- Average high temperature in August: 69.6°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 August: 52.3°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 August
Arcata, CA
- Average pressure in August: 29.96"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 August
Arcata, CA
- Average wind speed in August: 5.7mph
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 August
Arcata, CA
- Average humidity in August: 79%
The month with the highest relative humidity is March (82%).
The month with the lowest relative humidity is October (75%).
Average rainfall in August
Arcata, CA
- Average rainfall in August: 0.16"
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 August
Arcata, CA
- Average rainfall days in August: 2.1 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 August
Arcata, CA
- Average snowfall in August: 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 August
Arcata, CA
- Average snowfall days in August: 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 August /
Average sunshine in August
Arcata, CA
- Average daylight in August: 13h and 4min
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 August: 11h and 3min
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 August
Arcata, CA
- Average sunshine days in August: 27.9 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 August
Arcata, CA
- Average UV index in August: 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 August
Arcata, CA
- Average cloud cover in August: 16
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 August
Arcata, CA
- Average visibility in August: 5mi
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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