San Luis Obispo, CA Weather

San Luis Obispo, CA climate is mild during summer when temperatures tend to be in the 60's and cool during winter when temperatures tend to be in the 50's.

The warmest month of the year is September with an average maximum temperature of 81.80 degrees Fahrenheit, while the coldest month of the year is December with an average minimum temperature of 41.60 degrees Fahrenheit.

Temperature variations between night and day tend to be moderate during summer with a difference that can reach 28 degrees Fahrenheit, and moderate during winter with an average difference of 23 degrees Fahrenheit.

The annual average precipitation at San Luis Obispo is 24.36 Inches. Winter months tend to be wetter than summer months. The wettest month of the year is February with an average rainfall of 5.41 Inches.

Weather Data

Current Conditions

(Updated: 9:56 PM PST MON NOV 23 2009)

Fair, 47°F	Humidity: 66%	Dewpoint: 36°F
	Wind Speed: SE 4.6 MPH (4 KT)	Heat Index: 47°F
	Barometer: 30.11 in.	Wind Chill: 45°F

Weather Forecast

(Generated: 2:34 PM PST MON NOV 23 2009)

		Tonight: Clear. Lows in the mid 30s to upper 40s. Local northeast winds 10 to 20 mph in the evening.
	Lo: 47°F
	Hi: 76°F	Tuesday: Sunny. Highs in the 70s to lower 80s. Local northeast winds 10 to 20 mph.
	Lo: 45°F
	Hi: 76°F	Wednesday: Sunny. Highs from the mid 60s to lower 70s at The beaches to the mid 70s to lower 80s inland.
	Lo: 45°F
	Hi: 76°F	Thanksgiving day: Sunny. Highs in the 70s to lower 80s.
	Lo: 45°F
	Hi: 65°F	Friday: Mostly cloudy in the night and morning...Otherwise mostly clear. Patchy fog. Lows in the upper 30s to lower 50s. Highs in the 60s.
	Lo: 40°F
	Hi: 65°F	Saturday: Mostly clear. Lows in the 30s and 40s. Highs in the 60s.
	Lo: 35°F
	Hi: 65°F	Saturday: Mostly clear. Lows in the 30s and 40s. Highs in the 60s.
	Lo: 35°F

Moon, Sunrise and Sunset

	Moon Phase: First Quarter Moon	Civil Twilight: 6:17 AM PST	Sunrise: 6:44 AM PST
		Sunset: 4:52 PM PST	Civil Twilight: 5:19 PM PST

Normal Climate

Normal Temperatures

(SAN LUIS OBISPO POLYTECH Weather station, 1.35 miles from San Luis Obispo)

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Max °F	64.6	65.9	66.8	70.8	73.2	77.6	80.3	81.7	81.8	78.7	72.0	66.4	73.3
Mean °F	53.3	54.8	55.7	58.1	60.4	64.1	66.5	67.5	67.3	64.3	58.8	54.0	60.4
Min °F	41.9	43.6	44.5	45.4	47.5	50.6	52.7	53.3	52.8	49.8	45.5	41.6	47.4

Normal Precipitation