Mapleton weather by month
What a typical year looks like in Mapleton, Oregon: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Honeyman State Park, 23 km from Mapleton; records cover 1971–2026.
The year at a glance
- Precipitation a year
- 68.1 in1730 mm
- Snow a year
- Rare
- Last spring freeze
- Mar 28
- First fall freeze
- Nov 17
- Heating degree days
- 5,139
- Cooling degree days
- 14
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 27°−3° (heating, 99%) and 81°27° (cooling, 1%).
Month by month
Mapleton in January
Highs average 49°9° and lows 39°4°, with 10.9 in276 mm of precipitation in a typical January.
- Record high
- 65°18° (1985)
- Record low
- 14°−10° (1980)
- Heating degree days
- 660
- Cooling degree days
- 0
Mapleton in February
Highs average 51°10° and lows 38°4°, with 8 in202 mm of precipitation in a typical February.
- Record high
- 75°24° (1992)
- Record low
- 13°−11° (1989)
- Heating degree days
- 571
- Cooling degree days
- 0
Mapleton in March
Highs average 53°12° and lows 39°4°, with 8.2 in208 mm of precipitation in a typical March.
- Record high
- 78°26° (1987)
- Record low
- 19°−7° (2002)
- Heating degree days
- 587
- Cooling degree days
- 0
Mapleton in April
Highs average 57°14° and lows 42°5°, with 5.8 in148 mm of precipitation in a typical April.
- Record high
- 86°30° (1999)
- Record low
- 22°−6° (2024)
- Heating degree days
- 474
- Cooling degree days
- 1
Mapleton in May
Highs average 60°16° and lows 45°7°, with 3.1 in78 mm of precipitation in a typical May.
- Record high
- 89°32° (2005)
- Record low
- 30°−1° (2025)
- Heating degree days
- 384
- Cooling degree days
- 1
Mapleton in June
Highs average 64°18° and lows 49°9°, with 2.5 in63 mm of precipitation in a typical June.
- Record high
- 88°31° (1989)
- Record low
- 27°−3° (2001)
- Heating degree days
- 265
- Cooling degree days
- 1
Mapleton in July
Highs average 67°19° and lows 51°10°, with 0.56 in14 mm of precipitation in a typical July.
- Record high
- 92°33° (1978)
- Record low
- 33°1° (2001)
- Heating degree days
- 192
- Cooling degree days
- 3
Mapleton in August
Highs average 67°19° and lows 51°11°, with 0.76 in19 mm of precipitation in a typical August.
- Record high
- 93°34° (2004)
- Record low
- 39°4° (1973)
- Heating degree days
- 186
- Cooling degree days
- 3
Mapleton in September
Highs average 66°19° and lows 50°10°, with 2 in51 mm of precipitation in a typical September.
- Record high
- 95°35° (1994)
- Record low
- 30°−1° (1995)
- Heating degree days
- 217
- Cooling degree days
- 4
Mapleton in OctoberThis month
Highs average 60°16° and lows 46°8°, with 5.3 in133 mm of precipitation in a typical October.
- Record high
- 92°33° (1991)
- Record low
- 24°−4° (1999)
- Heating degree days
- 379
- Cooling degree days
- 1
Mapleton in November
Highs average 52°11° and lows 42°5°, with 10 in253 mm of precipitation in a typical November.
- Record high
- 69°21° (1974)
- Record low
- 20°−7° (1985)
- Heating degree days
- 540
- Cooling degree days
- 0
Mapleton in December
Highs average 48°9° and lows 38°3°, with 11.2 in284 mm of precipitation in a typical December.
- Record high
- 65°18° (1999)
- Record low
- 9°−13° (1972)
- Heating degree days
- 684
- Cooling degree days
- 0