| Month | Average (°F) | Record (°F) | Average (inches) | |||
|---|---|---|---|---|---|---|
| High ☀️ | Low 🌙 | High ☀️ | Low 🌙 | Precipitation 💧 | Snow ❄️ | |
| January | 41.9 | 30.5 | 70 | -18 | 1.9 | 2.3 |
| February | 46.5 | 32.4 | 75 | -16 | 1.6 | 1.9 |
| March | 55.7 | 37.4 | 79 | 4 | 2.1 | 0.2 |
| April | 62.8 | 42.1 | 96 | 20 | 1.9 | 0.0 |
| May | 71.9 | 49.1 | 100 | 26 | 2.1 | 0.0 |
| June | 79.5 | 55.0 | 116 | 36 | 1.2 | 0.0 |
| July | 90.3 | 62.1 | 114 | 40 | 0.5 | 0.0 |
| August | 88.9 | 61.6 | 114 | 42 | 0.4 | 0.0 |
| September | 78.7 | 53.6 | 104 | 32 | 0.6 | 0.0 |
| October | 63.8 | 43.8 | 89 | 15 | 1.6 | 0.1 |
| November | 49.1 | 35.1 | 81 | -11 | 2.2 | 0.6 |
| December | 40.9 | 29.8 | 71 | -24 | 2.1 | 2.6 |
| Entire year | 64.2 | 44.4 | 116 | -24 | 18.1 | 8.3 |
|
More Walla Walla Weather Records
1949–2024
|
||
|---|---|---|
| Highest daily low | 80 °F | June 30, 2021 |
| Lowest daily high | -9 °F | December 30, 1968 |
| Greatest daily range (Difference of high and low) |
48 °F | June 28, 1976 |
| Greatest difference in daily high over two conscutive days |
35 °F | Jan 19–20, 1950 |
| Most daily precipitation | 3.6 inches | July 23, 1992 |
| Most monthly precipitation | 6.6 inches | May 1991 |
| Most yearly precipitation | 26.7 inches | 1981 |
| Most yearly days with precipitation | 128 | 2012 |
| Earliest snow in season | October 29 | 1991 |
| Latest snow in season | April 15 | 1959 |
| Most daily snow | 11.0 inches | February 24, 1994 |
| Most monthly snow | 29.3 inches | January 1969 |
| Most yearly snow | 45.8 inches | 1985 |
| Most snow in a winter | 49.3 inches | 1968–1969 |
| Greatest snow accumulation | 17.0 inches | January 31, 1969 |
| Earliest freeze | October 8 | 1985 |
| Earliest day ≥ 80 °F | April 2 | 1992 |
| Earliest day ≥ 90 °F | April 23 | 1977 |
| Earliest day ≥ 100 °F | May 28 | 1983 |
| Latest freeze | May 1 | 1954 |
| Latest day ≥ 80 °F | November 12 | 1999 |
| Latest day ≥ 90 °F | September 29 | 1976 |
| Latest day ≥ 100 °F | September 8 | 1981 |
| Most days in a year < 0 °F | 12 | 1972 |
| Most days in a year < 32 °F | 108 | 1955 |
| Most days in a year ≥ 80 °F | 112 | 1994 |
| Most days in a year ≥ 90 °F | 67 | 1958 |
| Most days in a year ≥ 100 °F | 17 | 2015 |
| Most days in a year ≥ 110 °F | 3 | 2021 |
|
Walla Walla Weather Streaks
Most consecutive days...
|
||
|---|---|---|
| With precipitation | 17 days | Jan 12–28, 1950 |
| Without precipitation | 81 days | Jun 29 – Sep 17, 1969 |
| With snow | 10 days | Jan 3–12, 1993 |
| High temperature at or below freezing |
22 days | Dec 10–31, 1985 |
| High temperature ≥ 80 °F | 80 days | Jun 23 – Sep 10, 1967 |
| High temperature ≥ 90 °F | 31 days | Jul 14 – Aug 13, 1971 |
| High temperature ≥ 100 °F | 8 days | Jul 27 – Aug 3, 2009 |
| High temperature ≥ 110 °F | 3 days | Jun 27–29, 2021 |
| Years | Station | Coordinates |
|---|---|---|
| 1949–2024 | Walla Walla Regional Airport | location |