Summit weather by month
What a typical year looks like in Summit, Oregon: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Falls City 2 Ssw, 24 km from Summit; records cover 1897–2026.
The year at a glance
- Precipitation a year
- 81.2 in2062 mm
- Snow a year
- 10 in24 cm
- Last spring freeze
- Apr 28
- First fall freeze
- Nov 2
- Heating degree days
- 5,303
- Cooling degree days
- 194
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 21°−6° (heating, 99%) and 94°34° (cooling, 1%).
Month by month
Summit in January
Highs average 45°7° and lows 33°0°, with 13.8 in352 mm of precipitation and 2.6 in6.6 cm of snow in a typical January.
- Record high
- 68°20° (1928)
- Record low
- −5°−21° (1909)
- Heating degree days
- 808
- Cooling degree days
- 0
Summit in February
Highs average 49°10° and lows 33°1°, with 9.7 in245 mm of precipitation and 1.8 in4.6 cm of snow in a typical February.
- Record high
- 67°19° (1932)
- Record low
- 1°−17° (1899)
- Heating degree days
- 666
- Cooling degree days
- 0
Summit in March
Highs average 53°12° and lows 35°2°, with 9.3 in235 mm of precipitation and 1.1 in2.8 cm of snow in a typical March.
- Record high
- 82°28° (1930)
- Record low
- 17°−8° (2019)
- Heating degree days
- 645
- Cooling degree days
- 0
Summit in April
Highs average 58°14° and lows 38°3°, with 6.7 in171 mm of precipitation in a typical April.
- Record high
- 88°31° (1910)
- Record low
- 23°−5° (1929)
- Heating degree days
- 522
- Cooling degree days
- 0
Summit in May
Highs average 65°18° and lows 43°6°, with 2.9 in73 mm of precipitation in a typical May.
- Record high
- 94°34° (2008)
- Record low
- 26°−3° (1908)
- Heating degree days
- 350
- Cooling degree days
- 4
Summit in June
Highs average 70°21° and lows 47°8°, with 1.7 in43 mm of precipitation in a typical June.
- Record high
- 108°42° (2021)
- Record low
- 26°−3° (1910)
- Heating degree days
- 214
- Cooling degree days
- 18
Summit in July
Highs average 80°27° and lows 50°10°, with 0.35 in8.9 mm of precipitation in a typical July.
- Record high
- 106°41° (1928)
- Record low
- 36°2° (1904)
- Heating degree days
- 68
- Cooling degree days
- 70
Summit in August
Highs average 81°27° and lows 50°10°, with 0.45 in11 mm of precipitation in a typical August.
- Record high
- 103°39° (2017)
- Record low
- 36°2° (1908)
- Heating degree days
- 55
- Cooling degree days
- 72
Summit in September
Highs average 75°24° and lows 48°9°, with 2.1 in52 mm of precipitation in a typical September.
- Record high
- 100°38° (1929)
- Record low
- 26°−3° (1908)
- Heating degree days
- 142
- Cooling degree days
- 28
Summit in OctoberThis month
Highs average 62°17° and lows 43°6°, with 6.3 in161 mm of precipitation in a typical October.
- Record high
- 90°32° (1932)
- Record low
- 23°−5° (1924)
- Heating degree days
- 391
- Cooling degree days
- 2
Summit in November
Highs average 51°11° and lows 37°3°, with 11.5 in293 mm of precipitation and 0.5 in1.3 cm of snow in a typical November.
- Record high
- 74°23° (1927)
- Record low
- 10°−12° (1955)
- Heating degree days
- 638
- Cooling degree days
- 0
Summit in December
Highs average 45°7° and lows 33°1°, with 16.4 in417 mm of precipitation and 4 in9 cm of snow in a typical December.
- Record high
- 63°17° (1927)
- Record low
- −1°−18° (1924)
- Heating degree days
- 804
- Cooling degree days
- 0