Green Bluff weather by month
What a typical year looks like in Green Bluff, Washington: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Spokane Felts Field, 15 km from Green Bluff; records cover 1998–2026.
The year at a glance
- Precipitation a year
- 17.4 in441 mm
- Snow a year
- Rare
- Last spring freeze
- Apr 30
- First fall freeze
- Oct 9
- Heating degree days
- 6,019
- Cooling degree days
- 507
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 8°−13° (heating, 99%) and 98°37° (cooling, 1%).
Month by month
Green Bluff in January
Highs average 38°3° and lows 26°−3°, with 2 in51 mm of precipitation in a typical January.
- Record high
- 59°15° (2003)
- Record low
- −10°−23° (2004)
- Heating degree days
- 1029
- Cooling degree days
- 0
Green Bluff in February
Highs average 43°6° and lows 27°−3°, with 1.3 in34 mm of precipitation in a typical February.
- Record high
- 64°18° (2020)
- Record low
- −3°−19° (2014)
- Heating degree days
- 851
- Cooling degree days
- 0
Green Bluff in March
Highs average 51°11° and lows 32°0°, with 1.8 in46 mm of precipitation in a typical March.
- Record high
- 79°26° (2025)
- Record low
- 2°−17° (2009)
- Heating degree days
- 729
- Cooling degree days
- 0
Green Bluff in April
Highs average 60°15° and lows 37°3°, with 1.5 in38 mm of precipitation in a typical April.
- Record high
- 87°31° (2016)
- Record low
- 24°−4° (2001)
- Heating degree days
- 507
- Cooling degree days
- 0
Green Bluff in May
Highs average 70°21° and lows 44°7°, with 1.7 in43 mm of precipitation in a typical May.
- Record high
- 94°34° (2006)
- Record low
- 28°−2° (1999)
- Heating degree days
- 265
- Cooling degree days
- 14
Green Bluff in June
Highs average 76°24° and lows 50°10°, with 1.5 in38 mm of precipitation in a typical June.
- Record high
- 113°45° (2021)
- Record low
- 37°3° (2002)
- Heating degree days
- 110
- Cooling degree days
- 53
Green Bluff in July
Highs average 87°31° and lows 56°13°, with 0.67 in17 mm of precipitation in a typical July.
- Record high
- 107°42° (2024)
- Record low
- 39°4° (1999)
- Heating degree days
- 15
- Cooling degree days
- 218
Green Bluff in August
Highs average 86°30° and lows 55°13°, with 0.54 in14 mm of precipitation in a typical August.
- Record high
- 107°42° (2018)
- Record low
- 40°4° (2000)
- Heating degree days
- 18
- Cooling degree days
- 184
Green Bluff in September
Highs average 76°24° and lows 47°8°, with 0.68 in17 mm of precipitation in a typical September.
- Record high
- 103°39° (2025)
- Record low
- 26°−3° (2000)
- Heating degree days
- 146
- Cooling degree days
- 38
Green Bluff in OctoberThis month
Highs average 60°16° and lows 38°3°, with 1.5 in37 mm of precipitation in a typical October.
- Record high
- 86°30° (2008)
- Record low
- 12°−11° (2002)
- Heating degree days
- 492
- Cooling degree days
- 0
Green Bluff in November
Highs average 45°7° and lows 31°−1°, with 2 in51 mm of precipitation in a typical November.
- Record high
- 69°21° (1999)
- Record low
- −2°−19° (2010)
- Heating degree days
- 813
- Cooling degree days
- 0
Green Bluff in December
Highs average 37°3° and lows 26°−4°, with 2.2 in55 mm of precipitation in a typical December.
- Record high
- 63°17° (2014)
- Record low
- −10°−23° (2008)
- Heating degree days
- 1044
- Cooling degree days
- 0