March weather in Clearlake, CA
The average temperature in Clearlake in March is 48.5°F (35.4°F–61.6°F). Average precipitation: 3.99 inches.
March is a spring month in Clearlake, and is cooler than the annual average of 56.9°F. Daily temperatures swing about 26.2°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 11h 44m. For travel, March is cool.
Avg High
61.6°F
Avg Low
35.4°F
Precipitation
3.99 in
Snow
0.1 in
March records in Clearlake
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| March 1 | 78.1°F (2025) | 21.9°F (1971) | 3.25 in (1983) |
| March 2 | 75.0°F (1994) | 19.9°F (1971) | 1.18 in (1983) |
| March 3 | 73.9°F (1968) | 17.1°F (1966) | 2.91 in (1991) |
| March 4 | 75.0°F (1959) | 19.9°F (1966) | 2.42 in (1991) |
| March 5 | 75.9°F (2012) | 19.9°F (1976) | 2.26 in (2001) |
| March 6 | 80.1°F (2020) | 21.9°F (1971) | 2.59 in (2006) |
| March 7 | 77.0°F (1972) | 24.1°F (1955) | 1.33 in (1975) |
| March 8 | 79.0°F (2015) | 23.0°F (1969) | 1.03 in (1975) |
| March 9 | 79.0°F (2026) | 25.0°F (1974) | 5.26 in (1995) |
| March 10 | 78.1°F (2004) | 19.9°F (1964) | 2.04 in (1995) |
| March 11 | 82.0°F (2015) | 24.1°F (2006) | 1.82 in (1995) |
| March 12 | 82.9°F (2007) | 26.1°F (1962) | 1.31 in (2025) |
| March 13 | 82.0°F (2005) | 23.0°F (1962) | 1.47 in (1987) |
| March 14 | 81.0°F (2004) | 23.0°F (1977) | 1.13 in (2003) |
| March 15 | 81.0°F (2004) | 25.0°F (1964) | 2.36 in (2003) |
| March 16 | 82.9°F (2026) | 27.0°F (1956) | 1.70 in (1967) |
| March 17 | 88.0°F (2026) | 19.9°F (1966) | 0.86 in (2006) |
| March 18 | 90.0°F (2026) | 24.1°F (1955) | 0.55 in (2011) |
| March 19 | 88.0°F (2026) | 25.0°F (1965) | 0.87 in (2005) |
| March 20 | 87.1°F (2026) | 25.0°F (1968) | 2.32 in (2011) |
| March 21 | 82.9°F (1960) | 21.9°F (1955) | 2.64 in (1958) |
| March 22 | 84.0°F (2026) | 27.0°F (1973) | 1.74 in (2005) |
| March 23 | 82.0°F (2026) | 26.1°F (1957) | 0.66 in (1963) |
| March 24 | 82.0°F (1960) | 28.0°F (1966) | 0.96 in (1983) |
| March 25 | 82.0°F (1988) | 21.9°F (1964) | 1.35 in (1999) |
| March 26 | 82.9°F (2025) | 19.9°F (1972) | 0.75 in (1971) |
| March 27 | 80.1°F (1969) | 24.1°F (1972) | 1.55 in (1979) |
| March 28 | 82.9°F (2015) | 26.1°F (1972) | 0.88 in (2005) |
| March 29 | 84.0°F (1986) | 27.0°F (1972) | 0.82 in (2006) |
| March 30 | 82.9°F (2002) | 28.0°F (1972) | 1.46 in (1958) |
| March 31 | 84.0°F (1966) | 27.0°F (1971) | 1.70 in (1982) |