Trout Lake weather by month
What a typical year looks like in Trout Lake, Washington: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Mount Adams Rs, 1 km from Trout Lake; records cover 1924–2026.
The year at a glance
- Precipitation a year
- 0 in0 mm
- Snow a year
- Rare
- Last spring freeze
- May 23
- First fall freeze
- Sep 21
- Heating degree days
- 6,517
- Cooling degree days
- 253
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 7°−14° (heating, 99%) and 96°36° (cooling, 1%).
Month by month
Trout Lake in January
Highs average 39°4° and lows 26°−3°, with — of precipitation in a typical January.
- Record high
- 62°17° (2015)
- Record low
- −22°−30° (1927)
- Heating degree days
- 1017
- Cooling degree days
- 0
Trout Lake in February
Highs average 43°6° and lows 27°−3°, with — of precipitation in a typical February.
- Record high
- 64°18° (1926)
- Record low
- −20°−29° (1996)
- Heating degree days
- 844
- Cooling degree days
- 0
Trout Lake in March
Highs average 49°10° and lows 29°−1°, with — of precipitation in a typical March.
- Record high
- 79°26° (1939)
- Record low
- −7°−22° (1955)
- Heating degree days
- 797
- Cooling degree days
- 0
Trout Lake in April
Highs average 58°14° and lows 33°1°, with — of precipitation in a typical April.
- Record high
- 92°33° (1926)
- Record low
- 13°−11° (1936)
- Heating degree days
- 582
- Cooling degree days
- 0
Trout Lake in May
Highs average 68°20° and lows 40°4°, with — of precipitation in a typical May.
- Record high
- 97°36° (1986)
- Record low
- 0°−18° (2007)
- Heating degree days
- 354
- Cooling degree days
- 5
Trout Lake in June
Highs average 74°23° and lows 45°7°, with — of precipitation in a typical June.
- Record high
- 109°43° (2021)
- Record low
- 0°−18° (2007)
- Heating degree days
- 190
- Cooling degree days
- 22
Trout Lake in July
Highs average 84°29° and lows 50°10°, with — of precipitation in a typical July.
- Record high
- 108°42° (1939)
- Record low
- 0°−18° (2007)
- Heating degree days
- 51
- Cooling degree days
- 108
Trout Lake in August
Highs average 84°29° and lows 49°10°, with — of precipitation in a typical August.
- Record high
- 108°42° (1981)
- Record low
- 24°−4° (2000)
- Heating degree days
- 55
- Cooling degree days
- 98
Trout Lake in September
Highs average 75°24° and lows 42°6°, with — of precipitation in a typical September.
- Record high
- 98°37° (1988)
- Record low
- 11°−12° (2000)
- Heating degree days
- 206
- Cooling degree days
- 20
Trout Lake in OctoberThis month
Highs average 60°15° and lows 35°2°, with — of precipitation in a typical October.
- Record high
- 89°32° (1980)
- Record low
- 8°−13° (2002)
- Heating degree days
- 544
- Cooling degree days
- 0
Trout Lake in November
Highs average 45°7° and lows 30°−1°, with — of precipitation in a typical November.
- Record high
- 70°21° (1965)
- Record low
- −9°−23° (1985)
- Heating degree days
- 825
- Cooling degree days
- 0
Trout Lake in December
Highs average 37°3° and lows 25°−4°, with — of precipitation in a typical December.
- Record high
- 63°17° (1924)
- Record low
- −20°−29° (1964)
- Heating degree days
- 1052
- Cooling degree days
- 0