Weston weather by month
What a typical year looks like in Weston, Oregon: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Milton Freewater, 14 km from Weston; records cover 1928–2026.
The year at a glance
- Precipitation a year
- 16.2 in410 mm
- Snow a year
- 7 in18 cm
- Last spring freeze
- Mar 28
- First fall freeze
- Oct 26
- Heating degree days
- 4,471
- Cooling degree days
- 1,026
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 11°−12° (heating, 99%) and 100°38° (cooling, 1%).
Month by month
Weston in January
Highs average 44°7° and lows 30°−1°, with 1.8 in44 mm of precipitation and 2.4 in6.1 cm of snow in a typical January.
- Record high
- 70°21° (1968)
- Record low
- −17°−27° (1930)
- Heating degree days
- 860
- Cooling degree days
- 0
Weston in February
Highs average 49°9° and lows 33°0°, with 1.5 in39 mm of precipitation and 1.3 in3.3 cm of snow in a typical February.
- Record high
- 78°26° (1995)
- Record low
- −17°−27° (1950)
- Heating degree days
- 680
- Cooling degree days
- 0
Weston in March
Highs average 58°14° and lows 39°4°, with 1.7 in43 mm of precipitation and 0.1 in0.3 cm of snow in a typical March.
- Record high
- 81°27° (1960)
- Record low
- 6°−14° (1993)
- Heating degree days
- 524
- Cooling degree days
- 0
Weston in April
Highs average 65°18° and lows 44°7°, with 1.6 in41 mm of precipitation in a typical April.
- Record high
- 90°32° (1934)
- Record low
- 15°−9° (1936)
- Heating degree days
- 329
- Cooling degree days
- 5
Weston in May
Highs average 74°23° and lows 50°10°, with 1.8 in45 mm of precipitation in a typical May.
- Record high
- 99°37° (1947)
- Record low
- 25°−4° (1954)
- Heating degree days
- 146
- Cooling degree days
- 53
Weston in June
Highs average 81°27° and lows 56°13°, with 1.3 in32 mm of precipitation in a typical June.
- Record high
- 114°46° (2021)
- Record low
- 38°3° (1943)
- Heating degree days
- 39
- Cooling degree days
- 137
Weston in July
Highs average 90°32° and lows 63°17°, with 0.34 in8.6 mm of precipitation in a typical July.
- Record high
- 109°43° (1960)
- Record low
- 39°4° (1971)
- Heating degree days
- 2
- Cooling degree days
- 366
Weston in August
Highs average 89°32° and lows 62°17°, with 0.39 in9.9 mm of precipitation in a typical August.
- Record high
- 111°44° (1961)
- Record low
- 40°4° (1965)
- Heating degree days
- 4
- Cooling degree days
- 338
Weston in September
Highs average 80°26° and lows 55°13°, with 0.61 in15 mm of precipitation in a typical September.
- Record high
- 103°39° (2022)
- Record low
- 28°−2° (1965)
- Heating degree days
- 54
- Cooling degree days
- 117
Weston in OctoberThis month
Highs average 66°19° and lows 44°7°, with 1.2 in31 mm of precipitation in a typical October.
- Record high
- 92°33° (1997)
- Record low
- 13°−11° (1935)
- Heating degree days
- 318
- Cooling degree days
- 10
Weston in November
Highs average 52°11° and lows 36°2°, with 1.9 in49 mm of precipitation and 0.3 in0.8 cm of snow in a typical November.
- Record high
- 82°28° (1999)
- Record low
- −12°−24° (1985)
- Heating degree days
- 641
- Cooling degree days
- 0
Weston in December
Highs average 44°6° and lows 30°−1°, with 2.1 in52 mm of precipitation and 3 in8 cm of snow in a typical December.
- Record high
- 71°22° (1980)
- Record low
- −24°−31° (1968)
- Heating degree days
- 874
- Cooling degree days
- 0