Arcata, CA Weather

Arcata, CA climate is cool during summer when temperatures tend to be in the 50's and cold during winter when temperatures tend to be in the 40's.

The warmest month of the year is August with an average maximum temperature of 63.90 degrees Fahrenheit, while the coldest month of the year is December with an average minimum temperature of 40.60 degrees Fahrenheit.

Temperature variations between night and day tend to be fairly limited during summer with a difference that can reach 11 degrees Fahrenheit, and fairly limited during winter with an average difference of 14 degrees Fahrenheit.

The annual average precipitation at Arcata is 38.10 Inches. Winter months tend to be wetter than summer months. The wettest month of the year is December with an average rainfall of 6.35 Inches.

Weather Data

Current Conditions

(Updated: 7:53 AM PST WED NOV 25 2009)

Fog And Mist, 40°F	Humidity: 97%	Dewpoint: 39°F
	Wind Speed: CALM	Heat Index: 40°F
	Barometer: 30.17 in.	Wind Chill: 40°F

Weather Forecast

(Generated: 3:00 AM PST WED NOV 25 2009)

	Hi: 62°F	Today: Areas of morning low clouds around humboldt bay...Otherwise mostly sunny. Patchy fog early in the morning. Highs 56 to 66. Northeast wind around 5 mph shifting to the north in the afternoon.
	Lo: 44°F
	Hi: 60°F	Thanksgiving day: Mostly cloudy. Chance of rain. Highs 54 to 64. South wind 5 to 15 mph.
	Lo: 45°F
	Hi: 55°F	Friday: Mostly cloudy. Chance of rain showers. Highs 49 to 59. Northwest wind 5 to 15 mph.
	Lo: 38°F
	Hi: 58°F	Saturday: Mostly cloudy. Slight chance of rain showers. Lows 32 to 42. Highs 52 to 62.
	Lo: 41°F
	Hi: 61°F	Sunday: Partly cloudy in the morning and night... Otherwise clear. Highs 55 to 65. Lows 37 to 47.
	Lo: 43°F
	Hi: 61°F	Monday: Partly cloudy in the morning and night... Otherwise clear. Highs 55 to 65. Lows 37 to 47.
	Lo: 43°F
	Hi: 61°F	Monday: Partly cloudy in the morning and night... Otherwise clear. Highs 55 to 65. Lows 37 to 47.
	Lo: 41°F

Moon, Sunrise and Sunset

	Moon Phase: Waxing Gibbous Moon	Civil Twilight: 6:44 AM PST	Sunrise: 7:14 AM PST
		Sunset: 4:51 PM PST	Civil Twilight: 5:21 PM PST

Normal Climate

Normal Temperatures

(EUREKA WFO WOODLEY IS Weather station, 5.63 miles from Arcata)

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Max °F	55.0	55.9	56.1	57.4	59.6	61.8	63.3	63.9	63.6	61.3	58.0	55.1	59.3
Mean °F	47.9	48.9	49.2	50.7	53.6	56.3	58.1	58.7	57.4	54.5	51.0	47.9	52.9
Min °F	40.8	41.8	42.2	44.0	47.6	50.7	52.8	53.4	51.2	47.7	43.9	40.6	46.4

Normal Precipitation