May weather in Clearlake, CA
The average temperature in Clearlake in May is 58.8°F (45.0°F–72.5°F). Average precipitation: 1.16 inches.
May is a spring month in Clearlake, and is warmer than the annual average of 56.9°F. Daily temperatures swing about 27.5°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 14h 8m. For travel, May is a comfortable month to visit.
Avg High
72.5°F
Avg Low
45.0°F
Precipitation
1.16 in
Daylight
14h 8m
May records in Clearlake
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 91.0°F (1981) | 30.0°F (1967) | 0.81 in (1995) |
| May 2 | 88.0°F (1992) | 32.0°F (1967) | 0.52 in (2009) |
| May 3 | 90.0°F (1966) | 28.9°F (1965) | 0.47 in (1971) |
| May 4 | 93.0°F (1990) | 28.0°F (1964) | 0.52 in (2003) |
| May 5 | 93.9°F (1987) | 32.0°F (1966) | 1.57 in (2005) |
| May 6 | 95.0°F (1987) | 28.0°F (1968) | 0.34 in (1988) |
| May 7 | 93.9°F (1987) | 30.0°F (1977) | 0.58 in (1994) |
| May 8 | 93.0°F (2001) | 32.0°F (1964) | 0.50 in (1957) |
| May 9 | 91.9°F (2001) | 32.0°F (1983) | 0.81 in (2005) |
| May 10 | 91.9°F (2013) | 30.9°F (1983) | 0.32 in (1966) |
| May 11 | 93.0°F (1987) | 33.1°F (2000) | 0.15 in (1961) |
| May 12 | 91.9°F (2013) | 30.0°F (1967) | 0.42 in (1998) |
| May 13 | 100.0°F (1976) | 32.0°F (1967) | 0.48 in (1968) |
| May 14 | 96.1°F (1972) | 32.0°F (1968) | 0.21 in (1995) |
| May 15 | 93.0°F (1972) | 32.0°F (1964) | 0.83 in (2000) |
| May 16 | 93.9°F (1970) | 34.0°F (1964) | 1.56 in (1996) |
| May 17 | 96.1°F (1970) | 33.1°F (1971) | 0.18 in (1996) |
| May 18 | 99.0°F (1973) | 28.0°F (1974) | 0.43 in (1996) |
| May 19 | 99.0°F (1973) | 35.1°F (1991) | 0.54 in (2005) |
| May 20 | 97.0°F (1966) | 36.0°F (2010) | 0.43 in (2002) |
| May 21 | 97.0°F (1967) | 37.0°F (1974) | 0.54 in (2002) |
| May 22 | 97.0°F (1967) | 35.1°F (1960) | 0.65 in (2006) |
| May 23 | 95.0°F (1967) | 34.0°F (2010) | 0.62 in (1958) |
| May 24 | 93.9°F (1992) | 37.0°F (1962) | 0.17 in (1997) |
| May 25 | 95.0°F (1970) | 34.0°F (1983) | 0.43 in (1993) |
| May 26 | 100.0°F (1982) | 37.0°F (1980) | 0.29 in (1962) |
| May 27 | 98.1°F (2020) | 34.0°F (1964) | 0.98 in (1990) |
| May 28 | 96.1°F (1984) | 34.0°F (1964) | 2.03 in (1990) |
| May 29 | 100.9°F (1984) | 36.0°F (1965) | 2.02 in (1998) |
| May 30 | 99.0°F (1973) | 33.1°F (1985) | 0.86 in (1998) |
| May 31 | 98.1°F (2025) | 39.0°F (1961) | 0.54 in (1993) |