Siletz weather by month
What a typical year looks like in Siletz, Oregon: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Newport 3n, 12 km from Siletz; records cover 2009–2026.
The year at a glance
- Precipitation a year
- 0 in0 mm
- Snow a year
- Rare
- Last spring freeze
- Mar 16
- First fall freeze
- Nov 22
- Heating degree days
- 4,655
- Cooling degree days
- 5
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 28°−2° (heating, 99%) and 77°25° (cooling, 1%).
Month by month
Siletz in January
Highs average 55°13° and lows 42°6°, with — of precipitation in a typical January.
- Record high
- 77°25° (2022)
- Record low
- 25°−4° (2017)
- Heating degree days
- 515
- Cooling degree days
- 0
Siletz in February
Highs average 54°12° and lows 41°5°, with — of precipitation in a typical February.
- Record high
- 77°25° (2026)
- Record low
- 21°−6° (2011)
- Heating degree days
- 494
- Cooling degree days
- 0
Siletz in March
Highs average 54°12° and lows 41°5°, with — of precipitation in a typical March.
- Record high
- 76°24° (2019)
- Record low
- 27°−3° (2019)
- Heating degree days
- 536
- Cooling degree days
- 0
Siletz in April
Highs average 56°13° and lows 42°6°, with — of precipitation in a typical April.
- Record high
- 80°27° (2021)
- Record low
- 31°−1° (2009)
- Heating degree days
- 480
- Cooling degree days
- 0
Siletz in May
Highs average 59°15° and lows 46°8°, with — of precipitation in a typical May.
- Record high
- 79°26° (2019)
- Record low
- 34°1° (2013)
- Heating degree days
- 386
- Cooling degree days
- 0
Siletz in June
Highs average 62°17° and lows 49°9°, with — of precipitation in a typical June.
- Record high
- 82°28° (2022)
- Record low
- 40°4° (2012)
- Heating degree days
- 285
- Cooling degree days
- 0
Siletz in July
Highs average 65°19° and lows 51°11°, with — of precipitation in a typical July.
- Record high
- 79°26° (2024)
- Record low
- 40°4° (2025)
- Heating degree days
- 213
- Cooling degree days
- 0
Siletz in August
Highs average 66°19° and lows 51°11°, with — of precipitation in a typical August.
- Record high
- 89°32° (2016)
- Record low
- 41°5° (2015)
- Heating degree days
- 197
- Cooling degree days
- 2
Siletz in September
Highs average 66°19° and lows 49°10°, with — of precipitation in a typical September.
- Record high
- 91°33° (2014)
- Record low
- 41°5° (2015)
- Heating degree days
- 232
- Cooling degree days
- 2
Siletz in OctoberThis month
Highs average 62°17° and lows 47°8°, with — of precipitation in a typical October.
- Record high
- 88°31° (2023)
- Record low
- 32°0° (2019)
- Heating degree days
- 327
- Cooling degree days
- 1
Siletz in November
Highs average 56°13° and lows 45°7°, with — of precipitation in a typical November.
- Record high
- 79°26° (2015)
- Record low
- 25°−4° (2013)
- Heating degree days
- 444
- Cooling degree days
- 0
Siletz in December
Highs average 53°12° and lows 42°5°, with — of precipitation in a typical December.
- Record high
- 76°24° (2015)
- Record low
- 15°−9° (2013)
- Heating degree days
- 546
- Cooling degree days
- 0