June weather in St. Helena, CA
The average temperature in St. Helena in June is 69.8°F (54.2°F–85.4°F). Average precipitation: 0.35 inches.
June is a summer month in St. Helena, and is warmer than the annual average of 61°F. Daily temperatures swing about 31.2°F between overnight low and afternoon high. Expect about 1 days with precipitation. Daylight averages about 14h 39m. For travel, June is a comfortable month to visit.
Avg High
85.4°F
Avg Low
54.2°F
Precipitation
0.35 in
Daylight
14h 39m
June records in St. Helena
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| June 1 | 107.1°F (1919) | 37.9°F (1916) | 0.28 in (1961) |
| June 2 | 107.1°F (1960) | 36.0°F (1923) | 1.61 in (1967) |
| June 3 | 108.0°F (1919) | 37.0°F (1976) | 0.23 in (1999) |
| June 4 | 105.1°F (1919) | 37.9°F (1908) | 1.29 in (2011) |
| June 5 | 104.0°F (1926) | 39.0°F (1988) | 0.30 in (2011) |
| June 6 | 106.0°F (1928) | 37.9°F (1929) | 0.54 in (1936) |
| June 7 | 104.0°F (1973) | 37.0°F (1950) | 0.76 in (1936) |
| June 8 | 105.1°F (1973) | 37.9°F (1950) | 0.67 in (1964) |
| June 9 | 107.1°F (1921) | 39.9°F (1909) | 0.91 in (1929) |
| June 10 | 108.0°F (1921) | 39.0°F (1972) | 0.40 in (1958) |
| June 11 | 107.1°F (1918) | 39.0°F (1919) | 0.04 in (1937) |
| June 12 | 102.9°F (2015) | 36.0°F (1952) | 0.02 in (1955) |
| June 13 | 105.1°F (1966) | 39.9°F (1923) | 0.02 in (1910) |
| June 14 | 107.1°F (2000) | 39.9°F (1919) | 0.12 in (1920) |
| June 15 | 107.1°F (2000) | 39.9°F (1924) | 1.10 in (1929) |
| June 16 | 104.0°F (1943) | 36.0°F (1919) | 0.72 in (1937) |
| June 17 | 107.1°F (2021) | 39.9°F (1919) | 0.13 in (2005) |
| June 18 | 109.9°F (1920) | 39.9°F (1933) | 0.18 in (2005) |
| June 19 | 109.9°F (1920) | 37.9°F (1933) | 0.04 in (1956) |
| June 20 | 109.9°F (1920) | 39.9°F (1922) | 0.10 in (1908) |
| June 21 | 109.9°F (1921) | 39.9°F (1923) | 0.03 in (1912) |
| June 22 | 107.1°F (1921) | 37.9°F (1911) | 0.60 in (1912) |
| June 23 | 109.0°F (1909) | 42.1°F (1908) | 0.65 in (1912) |
| June 24 | 109.9°F (1925) | 37.9°F (1930) | 0.27 in (1941) |
| June 25 | 107.1°F (1910) | 39.0°F (1930) | 0.80 in (2013) |
| June 26 | 107.1°F (1925) | 39.9°F (1924) | 0.19 in (1941) |
| June 27 | 109.9°F (1976) | 41.0°F (1930) | 0.24 in (1913) |
| June 28 | 106.0°F (1956) | 39.9°F (1909) | 0.85 in (2011) |
| June 29 | 109.0°F (1950) | 39.9°F (1909) | 0.70 in (1992) |
| June 30 | 108.0°F (1972) | 39.9°F (1919) | 0.49 in (1916) |