Dallesport weather by month
What a typical year looks like in Dallesport, Washington: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at DALLESPORT AIRPORT, 1 km from Dallesport; records cover 1948–2026.
The year at a glance
- Precipitation a year
- 13.7 in347 mm
- Snow a year
- Rare
- Last spring freeze
- Apr 14
- First fall freeze
- Oct 21
- Heating degree days
- 4,678
- Cooling degree days
- 830
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 15°−9° (heating, 99%) and 102°39° (cooling, 1%).
Month by month
Dallesport in January
Highs average 42°6° and lows 31°−1°, with 2.4 in60 mm of precipitation in a typical January.
- Record high
- 68°20° (1971)
- Record low
- −19°−28° (1950)
- Heating degree days
- 884
- Cooling degree days
- 0
Dallesport in February
Highs average 48°9° and lows 32°0°, with 1.6 in40 mm of precipitation in a typical February.
- Record high
- 70°21° (2022)
- Record low
- −25°−32° (1950)
- Heating degree days
- 693
- Cooling degree days
- 0
Dallesport in March
Highs average 57°14° and lows 36°2°, with 1.2 in30 mm of precipitation in a typical March.
- Record high
- 80°27° (1994)
- Record low
- 6°−14° (2019)
- Heating degree days
- 575
- Cooling degree days
- 0
Dallesport in April
Highs average 64°18° and lows 42°5°, with 0.83 in21 mm of precipitation in a typical April.
- Record high
- 95°35° (1998)
- Record low
- 23°−5° (2007)
- Heating degree days
- 364
- Cooling degree days
- 2
Dallesport in May
Highs average 74°23° and lows 49°9°, with 0.76 in19 mm of precipitation in a typical May.
- Record high
- 107°42° (1986)
- Record low
- 28°−2° (1954)
- Heating degree days
- 154
- Cooling degree days
- 38
Dallesport in June
Highs average 79°26° and lows 55°13°, with 0.48 in12 mm of precipitation in a typical June.
- Record high
- 118°48° (2021)
- Record low
- 37°3° (1966)
- Heating degree days
- 43
- Cooling degree days
- 106
Dallesport in July
Highs average 88°31° and lows 61°16°, with 0.16 in4.1 mm of precipitation in a typical July.
- Record high
- 112°44° (2022)
- Record low
- 40°4° (1981)
- Heating degree days
- 2
- Cooling degree days
- 303
Dallesport in August
Highs average 88°31° and lows 60°16°, with 0.16 in4.1 mm of precipitation in a typical August.
- Record high
- 110°43° (1971)
- Record low
- 42°6° (1980)
- Heating degree days
- 2
- Cooling degree days
- 284
Dallesport in September
Highs average 80°27° and lows 52°11°, with 0.33 in8.4 mm of precipitation in a typical September.
- Record high
- 105°41° (1988)
- Record low
- 29°−2° (1965)
- Heating degree days
- 54
- Cooling degree days
- 92
Dallesport in OctoberThis month
Highs average 66°19° and lows 43°6°, with 1.1 in29 mm of precipitation in a typical October.
- Record high
- 90°32° (1958)
- Record low
- 15°−9° (2002)
- Heating degree days
- 344
- Cooling degree days
- 5
Dallesport in November
Highs average 50°10° and lows 35°2°, with 2 in50 mm of precipitation in a typical November.
- Record high
- 74°23° (2021)
- Record low
- −1°−18° (1985)
- Heating degree days
- 670
- Cooling degree days
- 0
Dallesport in December
Highs average 41°5° and lows 31°−1°, with 2.7 in68 mm of precipitation in a typical December.
- Record high
- 70°21° (2021)
- Record low
- −9°−23° (1972)
- Heating degree days
- 893
- Cooling degree days
- 0