La Grande weather by month
What a typical year looks like in La Grande, Oregon: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at LA GRANDE, 1 km from La Grande; records cover 1965–2026.
The year at a glance
- Precipitation a year
- 17.4 in442 mm
- Snow a year
- 9 in24 cm
- Last spring freeze
- May 8
- First fall freeze
- Oct 4
- Heating degree days
- 6,132
- Cooling degree days
- 476
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 98°37° (cooling, 1%).
Month by month
La Grande in January
Highs average 39°4° and lows 25°−4°, with 1.7 in42 mm of precipitation and 3 in8 cm of snow in a typical January.
- Record high
- 61°16° (1971)
- Record low
- −17°−27° (1996)
- Heating degree days
- 1024
- Cooling degree days
- 0
La Grande in February
Highs average 44°7° and lows 27°−3°, with 1.2 in31 mm of precipitation and 1 in2.5 cm of snow in a typical February.
- Record high
- 66°19° (1986)
- Record low
- −10°−23° (1989)
- Heating degree days
- 829
- Cooling degree days
- 0
La Grande in March
Highs average 52°11° and lows 31°−1°, with 1.7 in44 mm of precipitation and 0.8 in2 cm of snow in a typical March.
- Record high
- 80°27° (2026)
- Record low
- 9°−13° (1976)
- Heating degree days
- 741
- Cooling degree days
- 0
La Grande in April
Highs average 59°15° and lows 35°2°, with 1.8 in46 mm of precipitation and 0.1 in0.3 cm of snow in a typical April.
- Record high
- 88°31° (1977)
- Record low
- 16°−9° (1968)
- Heating degree days
- 542
- Cooling degree days
- 0
La Grande in May
Highs average 68°20° and lows 43°6°, with 2.2 in57 mm of precipitation in a typical May.
- Record high
- 95°35° (1983)
- Record low
- 24°−4° (2013)
- Heating degree days
- 315
- Cooling degree days
- 10
La Grande in June
Highs average 75°24° and lows 49°9°, with 1.4 in35 mm of precipitation in a typical June.
- Record high
- 108°42° (2021)
- Record low
- 22°−6° (2020)
- Heating degree days
- 145
- Cooling degree days
- 49
La Grande in July
Highs average 86°30° and lows 55°13°, with 0.6 in15 mm of precipitation in a typical July.
- Record high
- 108°42° (2002)
- Record low
- 32°0° (1971)
- Heating degree days
- 27
- Cooling degree days
- 193
La Grande in August
Highs average 87°31° and lows 53°12°, with 0.67 in17 mm of precipitation in a typical August.
- Record high
- 106°41° (2018)
- Record low
- 31°−1° (2000)
- Heating degree days
- 30
- Cooling degree days
- 181
La Grande in September
Highs average 77°25° and lows 45°7°, with 0.67 in17 mm of precipitation in a typical September.
- Record high
- 103°39° (2022)
- Record low
- 23°−5° (1985)
- Heating degree days
- 162
- Cooling degree days
- 43
La Grande in OctoberThis month
Highs average 62°17° and lows 36°2°, with 1.6 in40 mm of precipitation in a typical October.
- Record high
- 89°32° (2001)
- Record low
- 9°−13° (2019)
- Heating degree days
- 496
- Cooling degree days
- 0
La Grande in November
Highs average 48°9° and lows 30°−1°, with 1.9 in49 mm of precipitation and 1.2 in3 cm of snow in a typical November.
- Record high
- 71°22° (1988)
- Record low
- −14°−26° (1985)
- Heating degree days
- 784
- Cooling degree days
- 0
La Grande in December
Highs average 39°4° and lows 24°−4°, with 1.9 in48 mm of precipitation and 3 in8 cm of snow in a typical December.
- Record high
- 62°17° (2021)
- Record low
- −18°−28° (1983)
- Heating degree days
- 1037
- Cooling degree days
- 0