North Bonneville weather by month
What a typical year looks like in North Bonneville, Washington: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Cascade Locks, 9 km from North Bonneville; records cover 1894–2026.
The year at a glance
- Precipitation a year
- 0 in0 mm
- Snow a year
- Rare
- Last spring freeze
- Apr 3
- First fall freeze
- Nov 12
- Heating degree days
- 4,856
- Cooling degree days
- 362
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 20°−7° (heating, 99%) and 96°36° (cooling, 1%).
Month by month
North Bonneville in January
Highs average 42°5° and lows 33°1°, with — of precipitation in a typical January.
- Record high
- 63°17° (1919)
- Record low
- −3°−19° (1950)
- Heating degree days
- 851
- Cooling degree days
- 0
North Bonneville in February
Highs average 48°9° and lows 34°1°, with — of precipitation in a typical February.
- Record high
- 68°20° (1932)
- Record low
- −2°−19° (1950)
- Heating degree days
- 675
- Cooling degree days
- 0
North Bonneville in March
Highs average 54°12° and lows 36°2°, with — of precipitation in a typical March.
- Record high
- 84°29° (1915)
- Record low
- 13°−11° (1906)
- Heating degree days
- 618
- Cooling degree days
- 0
North Bonneville in April
Highs average 61°16° and lows 41°5°, with — of precipitation in a typical April.
- Record high
- 90°32° (1926)
- Record low
- 27°−3° (1918)
- Heating degree days
- 431
- Cooling degree days
- 1
North Bonneville in May
Highs average 68°20° and lows 47°8°, with — of precipitation in a typical May.
- Record high
- 95°35° (1924)
- Record low
- 26°−3° (1954)
- Heating degree days
- 244
- Cooling degree days
- 5
North Bonneville in June
Highs average 73°23° and lows 52°11°, with — of precipitation in a typical June.
- Record high
- 109°43° (2021)
- Record low
- 36°2° (1933)
- Heating degree days
- 115
- Cooling degree days
- 41
North Bonneville in July
Highs average 80°27° and lows 56°13°, with — of precipitation in a typical July.
- Record high
- 108°42° (1941)
- Record low
- 40°4° (1918)
- Heating degree days
- 19
- Cooling degree days
- 122
North Bonneville in August
Highs average 82°28° and lows 57°14°, with — of precipitation in a typical August.
- Record high
- 107°42° (2023)
- Record low
- 41°5° (1931)
- Heating degree days
- 10
- Cooling degree days
- 142
North Bonneville in September
Highs average 76°25° and lows 51°11°, with — of precipitation in a typical September.
- Record high
- 97°36° (1938)
- Record low
- 30°−1° (1908)
- Heating degree days
- 88
- Cooling degree days
- 49
North Bonneville in OctoberThis month
Highs average 63°17° and lows 45°7°, with — of precipitation in a typical October.
- Record high
- 88°31° (1935)
- Record low
- 24°−4° (1935)
- Heating degree days
- 346
- Cooling degree days
- 2
North Bonneville in November
Highs average 50°10° and lows 39°4°, with — of precipitation in a typical November.
- Record high
- 71°22° (1894)
- Record low
- 10°−12° (1896)
- Heating degree days
- 614
- Cooling degree days
- 0
North Bonneville in December
Highs average 43°6° and lows 33°0°, with — of precipitation in a typical December.
- Record high
- 66°19° (1917)
- Record low
- 2°−17° (1924)
- Heating degree days
- 845
- Cooling degree days
- 0