Oceano weather by month
What a typical year looks like in Oceano, California: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at SAN LUIS OBISPO POLY, 23 km from Oceano; records cover 1927–2026.
The year at a glance
- Precipitation a year
- 22.4 in569 mm
- Snow a year
- Rare
- Last spring freeze
- Feb 4
- First fall freeze
- Dec 6
- Heating degree days
- 2,031
- Cooling degree days
- 418
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 33°1° (heating, 99%) and 97°36° (cooling, 1%).
Month by month
Oceano in January
Highs average 65°18° and lows 44°7°, with 5.1 in129 mm of precipitation in a typical January.
- Record high
- 90°32° (2014)
- Record low
- 24°−4° (1937)
- Heating degree days
- 329
- Cooling degree days
- 2
Oceano in February
Highs average 65°18° and lows 44°7°, with 4.9 in125 mm of precipitation in a typical February.
- Record high
- 89°32° (1932)
- Record low
- 21°−6° (1929)
- Heating degree days
- 289
- Cooling degree days
- 4
Oceano in March
Highs average 67°20° and lows 46°8°, with 3.9 in99 mm of precipitation in a typical March.
- Record high
- 98°37° (2026)
- Record low
- 28°−2° (1962)
- Heating degree days
- 264
- Cooling degree days
- 6
Oceano in April
Highs average 69°21° and lows 47°8°, with 1.4 in35 mm of precipitation in a typical April.
- Record high
- 104°40° (1989)
- Record low
- 29°−2° (1975)
- Heating degree days
- 220
- Cooling degree days
- 12
Oceano in May
Highs average 72°22° and lows 49°10°, with 0.51 in13 mm of precipitation in a typical May.
- Record high
- 102°39° (2000)
- Record low
- 32°0° (1987)
- Heating degree days
- 158
- Cooling degree days
- 22
Oceano in June
Highs average 76°24° and lows 52°11°, with 0.13 in3.3 mm of precipitation in a typical June.
- Record high
- 108°42° (1929)
- Record low
- 35°2° (1988)
- Heating degree days
- 76
- Cooling degree days
- 38
Oceano in July
Highs average 78°26° and lows 54°12°, with 0.07 in1.8 mm of precipitation in a typical July.
- Record high
- 111°44° (1989)
- Record low
- 36°2° (1987)
- Heating degree days
- 28
- Cooling degree days
- 67
Oceano in August
Highs average 80°27° and lows 55°13°, with 0.01 in0.3 mm of precipitation in a typical August.
- Record high
- 107°42° (1944)
- Record low
- 40°4° (1970)
- Heating degree days
- 17
- Cooling degree days
- 86
Oceano in September
Highs average 80°27° and lows 54°12°, with 0.11 in2.8 mm of precipitation in a typical September.
- Record high
- 113°45° (2020)
- Record low
- 35°2° (2004)
- Heating degree days
- 31
- Cooling degree days
- 90
Oceano in OctoberThis month
Highs average 78°25° and lows 52°11°, with 0.76 in19 mm of precipitation in a typical October.
- Record high
- 109°43° (1980)
- Record low
- 30°−1° (1971)
- Heating degree days
- 82
- Cooling degree days
- 71
Oceano in November
Highs average 71°22° and lows 47°9°, with 2 in50 mm of precipitation in a typical November.
- Record high
- 98°37° (1966)
- Record low
- 23°−5° (2004)
- Heating degree days
- 196
- Cooling degree days
- 19
Oceano in December
Highs average 64°18° and lows 44°7°, with 3.6 in91 mm of precipitation in a typical December.
- Record high
- 92°33° (1958)
- Record low
- 17°−8° (1990)
- Heating degree days
- 341
- Cooling degree days
- 1