Walla Walla East weather by month
What a typical year looks like in Walla Walla East, Washington: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Walla Walla Regional Airport, 6 km from Walla Walla East; records cover 1949–2026.
The year at a glance
- Precipitation a year
- 18.7 in476 mm
- Snow a year
- 7 in17 cm
- Last spring freeze
- Mar 28
- First fall freeze
- Oct 30
- Heating degree days
- 4,797
- Cooling degree days
- 937
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 11°−12° (heating, 99%) and 102°39° (cooling, 1%).
Month by month
Walla Walla East in January
Highs average 42°5° and lows 31°−1°, with 2.1 in53 mm of precipitation and 1 in2.5 cm of snow in a typical January.
- Record high
- 70°21° (1968)
- Record low
- −18°−28° (1957)
- Heating degree days
- 890
- Cooling degree days
- 0
Walla Walla East in February
Highs average 47°8° and lows 33°0°, with 1.6 in40 mm of precipitation and 2.2 in5.6 cm of snow in a typical February.
- Record high
- 75°24° (1995)
- Record low
- −16°−27° (1950)
- Heating degree days
- 708
- Cooling degree days
- 0
Walla Walla East in March
Highs average 56°13° and lows 38°3°, with 2.1 in54 mm of precipitation and 0.2 in0.5 cm of snow in a typical March.
- Record high
- 79°26° (1964)
- Record low
- 4°−16° (1993)
- Heating degree days
- 564
- Cooling degree days
- 0
Walla Walla East in April
Highs average 63°17° and lows 43°6°, with 2 in50 mm of precipitation in a typical April.
- Record high
- 96°36° (1977)
- Record low
- 20°−7° (1966)
- Heating degree days
- 376
- Cooling degree days
- 2
Walla Walla East in May
Highs average 71°22° and lows 49°10°, with 2.1 in53 mm of precipitation in a typical May.
- Record high
- 100°38° (1983)
- Record low
- 26°−3° (1954)
- Heating degree days
- 182
- Cooling degree days
- 37
Walla Walla East in June
Highs average 79°26° and lows 55°13°, with 1.2 in31 mm of precipitation in a typical June.
- Record high
- 116°47° (2021)
- Record low
- 36°2° (1966)
- Heating degree days
- 54
- Cooling degree days
- 116
Walla Walla East in July
Highs average 90°32° and lows 62°17°, with 0.47 in12 mm of precipitation in a typical July.
- Record high
- 114°46° (1975)
- Record low
- 40°4° (1971)
- Heating degree days
- 3
- Cooling degree days
- 352
Walla Walla East in August
Highs average 89°31° and lows 62°17°, with 0.4 in10 mm of precipitation in a typical August.
- Record high
- 114°46° (1961)
- Record low
- 42°6° (1992)
- Heating degree days
- 5
- Cooling degree days
- 320
Walla Walla East in September
Highs average 79°26° and lows 54°12°, with 0.64 in16 mm of precipitation in a typical September.
- Record high
- 104°40° (1950)
- Record low
- 32°0° (1965)
- Heating degree days
- 68
- Cooling degree days
- 104
Walla Walla East in OctoberThis month
Highs average 63°17° and lows 44°7°, with 1.7 in42 mm of precipitation and 0.1 in0.3 cm of snow in a typical October.
- Record high
- 89°32° (1958)
- Record low
- 15°−9° (2002)
- Heating degree days
- 358
- Cooling degree days
- 6
Walla Walla East in November
Highs average 49°10° and lows 36°2°, with 2.3 in57 mm of precipitation and 0.3 in0.8 cm of snow in a typical November.
- Record high
- 81°27° (1999)
- Record low
- −11°−24° (1985)
- Heating degree days
- 678
- Cooling degree days
- 0
Walla Walla East in December
Highs average 41°5° and lows 30°−1°, with 2.2 in57 mm of precipitation and 2.7 in6.9 cm of snow in a typical December.
- Record high
- 71°22° (2014)
- Record low
- −24°−31° (1968)
- Heating degree days
- 911
- Cooling degree days
- 0