| Month | Average (°F) | Record (°F) | Average (inches) | |||
|---|---|---|---|---|---|---|
| High ☀️ | Low 🌙 | High ☀️ | Low 🌙 | Precipitation 💧 | Snow ❄️ | |
| January | 58.1 | 39.1 | 85 | 18 | 4.8 | 0.0 |
| February | 61.9 | 40.3 | 89 | 18 | 5.1 | 0.0 |
| March | 64.8 | 42.2 | 93 | 24 | 3.5 | 0.0 |
| April | 68.0 | 44.2 | 97 | 24 | 1.7 | 0.0 |
| May | 72.0 | 47.7 | 101 | 27 | 1.0 | 0.0 |
| June | 78.5 | 50.7 | 110 | 32 | 0.2 | 0.0 |
| July | 80.9 | 52.7 | 110 | 39 | 0.0 | 0.0 |
| August | 81.5 | 53.1 | 105 | 39 | 0.0 | 0.0 |
| September | 81.8 | 51.6 | 109 | 31 | 0.1 | 0.0 |
| October | 76.8 | 47.8 | 106 | 25 | 1.2 | 0.0 |
| November | 65.9 | 42.5 | 91 | 20 | 2.9 | 0.0 |
| December | 58.1 | 38.6 | 81 | 16 | 5.2 | 0.0 |
| Entire year | 70.9 | 45.9 | 110 | 16 | 25.4 | 0.0 |
|
More Petaluma Weather Records
1893–2024
|
||
|---|---|---|
| Highest daily low | 76 °F | September 25, 1893 |
| Lowest daily high | 36 °F | December 15, 1972 |
| Greatest daily range (Difference of high and low) |
61 °F | September 30, 1924 |
| Greatest difference in daily high over two conscutive days |
35 °F | May 13–14, 1919 |
| Most daily precipitation | 5.2 inches | October 24, 2021 |
| Most monthly precipitation | 19.6 inches | February 1998 |
| Most yearly precipitation | 48.7 inches | 1983 |
| Most yearly days with precipitation | 127 | 1998 |
| Earliest snow in season | November 27 | 1931 |
| Latest snow in season | January 29 | 1916 |
| Most daily snow | 1.3 inches | November 29, 1931 |
| Most monthly snow | 2.6 inches | November 1931 |
| Most yearly snow | 2.6 inches | 1931 |
| Most snow in a winter | 2.6 inches | 1931–1932 |
| Greatest snow accumulation | 10.0 inches | January 29, 1934 |
| Earliest freeze | September 19 | 1929 |
| Earliest day ≥ 80 °F | January 8 | 1962 |
| Earliest day ≥ 90 °F | March 16 | 1914 |
| Earliest day ≥ 100 °F | May 12 | 1976 |
| Latest freeze | May 10 | 1985 |
| Latest day ≥ 80 °F | December 26 | 1967 |
| Latest day ≥ 90 °F | November 17 | 1932 |
| Latest day ≥ 100 °F | October 16 | 1933 |
| Most days in a year < 32 °F | 55 | 1918 |
| Most days in a year ≥ 80 °F | 122 | 1984 |
| Most days in a year ≥ 90 °F | 42 | 1984 |
| Most days in a year ≥ 100 °F | 8 | 1976 |
| Most days in a year ≥ 110 °F | 1 | 1972 |
|
Petaluma Weather Streaks
Most consecutive days...
|
||
|---|---|---|
| With precipitation | 26 days | Jan 31 – Feb 25, 1998 |
| Without precipitation | 174 days | May 2 – Oct 22, 1987 |
| High temperature ≥ 80 °F | 37 days | Jul 11 – Aug 16, 1936 |
| High temperature ≥ 90 °F | 11 days | Jul 15–25, 1960 |
| High temperature ≥ 100 °F | 5 days | Sep 12–16, 1971 |
| Years | Station | Coordinates |
|---|---|---|
| 1893–2024 | Petaluma Airport | location |