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United States › Oregon › Clatsop County › Climate Station ASTORIA RGNL AP, OR US Distance 12.5 mi Normals 1991–2020

30-year climate normals

Clatsop County Climate and Weather Averages

Hottest month — August

68.7°

average daily high. The coldest month is February, averaging a low of 37.4°F.

Clatsop County gets 70.26" of precipitation a year, and 46% of it falls in Nov, Dec, Jan.

Temperature through the year

Each bar spans the average daily low to the average daily high for that month.

40° 60° JanFebMarAprMayJunJulAugSepOctNovDec
MonthAvg highAvg low Precip
January 49.4° 38.1° 10.59"
February 50.9° 37.4° 7.18"
March 53.0° 39.0° 7.90"
April 55.9° 41.5° 5.80"
May 60.5° 46.3° 3.40"
June 64.0° 50.6° 2.30"
July 67.4° 53.9° 0.83"
August 68.7° 53.9° 1.12"
September 67.6° 50.5° 2.67"
October 60.7° 44.9° 6.74"
November 53.6° 40.2° 11.05"
December 48.7° 37.6° 10.68"

Rainfall by month

Clatsop County has a distinct wet season. 46% of the year's precipitation arrives in Nov, Dec, Jan.

January 10.59"
February 7.18"
March 7.90"
April 5.80"
May 3.40"
June 2.30"
July 0.83"
August 1.12"
September 2.67"
October 6.74"
November 11.05"
December 10.68"
Annual total 70.26"

What this climate costs you

Degree days measure how hard a building has to work to stay comfortable. They are the reason two identical houses have very different power bills, and they are the link between the weather here and what you pay every month.

Cooling degree days How much air conditioning the climate demands 22
Heating degree days How much heating the climate demands 4,960
Approximate annual cooling cost At 16.27¢/kWh, Oregon average $4
Approximate annual electric heating cost Lower where heating is gas rather than electric $282

These are rough planning figures from degree days and the state electricity price, not a bill estimate. House size, insulation and fuel type move them a lot. See the full cost of owning a home in Clatsop County, where electricity is one line of eight.

Common questions

What is the weather like in Clatsop County?

Clatsop County averages a high of 68.7°F in August and a low of 37.4°F in February. Annual precipitation is 70.26 inches, with essentially no snow.

When is the rainy season in Clatsop County?

The wettest stretch is Nov, Dec, Jan, which accounts for 46% of the year's precipitation. That is a pronounced wet season rather than rain spread evenly through the year.

How hot does it get in Clatsop County?

The average daily high in August, the hottest month, is 68.7°F. That drives 22 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Clatsop County?

Effectively no. Measurable snowfall is rare in Clatsop County.

Sources

  • Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station ASTORIA RGNL AP, OR US (USW00094224), 12.5 miles from the county centroid.
  • Heating and cooling degree days — NOAA, same station and period.
  • Electricity price — US Energy Information Administration, Electric Power Monthly Table 5.6.A, Oregon residential average.
  • Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.