Park climate1991–2020 climate normals477 m source elevationNASA POWER

Twelve-month atmospheric profile derived from representative coordinate station measurements

Olympic National Forest Monthly Climate Normals: Long-term Temperature and Precipitation Data

Name: Olympic National Forest monthly climate normals
Creator: NASA POWER

Detailed monthly climate averages for Olympic National Forest provide insight into year-round atmospheric patterns using NASA POWER records from 1991 to 2020. This profile tracks mean, maximum, and minimum temperatures alongside daily precipitation rates, relative humidity, wind speed, and daylight hours. Values represent a single sample point at 477.44 meters and reflect historical long-term averages rather than current weather or park-wide conditions.

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A digital illustration of a waterfall cascading down a rocky cliff into a river, framed by tall pine trees and foreground wildflowers under a light-colored sky.

Annual climate pattern

Long term monthly temperature ranges and average daily precipitation rates across twelve months

Olympic National Forest Annual Climate Normals, Monthly Temperature And Precipitation Rhythms

Olympic National Forest exhibits a clear annual temperature progression across twelve months, moving from winter lows to peak summer averages. Average daily precipitation rates accompany these thermal shifts at a representative coordinate, relying on historical climatology records from 1991 through 2020.

Mean temperatureAverage minimum–maximum rangePrecipitation

Annual mean: 8.5 °C
Warmest month: August
Coolest month: December
Wettest month: November

Twelve-month climate

Track average temperature bounds, precipitation rates, humidity, and daylight normals throughout the year.

Olympic National Forest Monthly Climate Comparison Across Twelve Calendar Months

Examine long-term monthly climate normals spanning average daily temperatures, precipitation rates, and atmospheric humidity across the protected landscape. Comparing all twelve calendar periods clarifies how temperature bounds, wind speeds, and calculated daylight hours shift across the seasonal cycle at a representative coordinate.

	Mean temperature	Precipitation	Humidity	Wind speed	Daylight
January	2.4 °C-5.8° to 9.1°	6.3 mm/day	90.9%	2.5 m/s	8.7 hours
February	2.9 °C-4.6° to 10.4°	4.5 mm/day	87.4%	2.4 m/s	10 hours
March	4.4 °C-2.7° to 14°	4.6 mm/day	85.1%	2.4 m/s	11.7 hours
April	6.8 °C-0.1° to 18.3°	3.3 mm/day	80.7%	2.1 m/s	13.4 hours
May	10.6 °C2.4° to 22.8°	2.1 mm/day	77.4%	1.7 m/s	15 hours
June	13.1 °C5.2° to 25.2°	1.6 mm/day	76.7%	1.6 m/s	15.7 hours
July	16.3 °C7.7° to 28.9°	0.8 mm/day	72.6%	1.6 m/s	15.4 hours
August	16.4 °C8.2° to 29°	1.1 mm/day	71.9%	1.6 m/s	14 hours
September	13.6 °C5.5° to 26.9°	1.8 mm/day	75%	1.7 m/s	12.3 hours
October	8.8 °C1.2° to 20.5°	4.1 mm/day	83.2%	2.1 m/s	10.5 hours
November	4.7 °C-2.9° to 13.4°	6.7 mm/day	89.3%	2.5 m/s	9 hours
December	2.2 °C-5.3° to 9.1°	6.3 mm/day	90.9%	2.6 m/s	8.3 hours

Compare two months

See two months side by side and how much they differ. Both use the same 1991–2020 climate normals and NASA POWER data point as the table above, so they show typical conditions, not a forecast.

First month

Second month

Mean temperature: December: 2.2 °C; August: 16.4 °C; Change from December to August: +14.2 °C
Precipitation: December: 6.3 mm/day; August: 1.1 mm/day; Change from December to August: -5.2 mm/day
Daylight: December: 8.3 hours; August: 14 hours; Change from December to August: +5.8 hours

Calculated climate highlights

Comparing annual temperature, precipitation, humidity, wind, and daylight normals

Olympic National Forest Calculated Monthly Climate Highlights and Averages

Calculated monthly climate highlights summarize long-term temperature, precipitation, humidity, wind, and daylight normals derived from stored baseline records for Olympic National Forest. Comparative monthly averages identify peak and minimum values across the annual cycle without representing localized weather extremes.

Warmest month: August16.4 °C
Coolest month: December2.2 °C
Wettest month: November6.7 mm/day
Driest month: July0.8 mm/day
Most humid month: December90.9%
Windiest month: December2.6 m/s
Longest daylight: June15.7 hours

Interactive climate map

National park climate map

Open the climate map to compare monthly temperature, precipitation, and other averages.

Global National Park Climate Map

Other park climates

Explore monthly temperature, precipitation, and atmospheric normals across diverse geographic settings.

Comparing Olympic National Forest Climate Profiles With Other Protected Landscapes

Standardized monthly climate profiles allow structured comparison of temperature, precipitation rhythm, and daylight patterns across distinct protected landscapes. Examining multiple regions reveals varied atmospheric conditions and long-term normals without implying direct equivalence between individual park environments.