Park climate1991–2020 climate normals1,145 m source elevationNASA POWER

Detailed atmospheric patterns and annual cycles based on representative coordinate measurements.

Mount Washington Wilderness Monthly Climate Normals, Temperature, and Precipitation Averages

Name: Mount Washington Wilderness monthly climate normals
Creator: NASA POWER

Mount Washington Wilderness climate profile presents twelve-month averages for temperature, precipitation, humidity, wind, and daylight hours derived from 1991 to 2020 NASA POWER data. These metrics capture the long-term annual rhythm at a single representative elevation of 1144.5 meters. Measurements provide a baseline for geographic climate comparison and do not reflect real-time weather, extreme events, or terrain-wide variations across the protected wilderness area.

View park overview Browse climate zones

Vector-style illustration of a dramatic, angular mountain peak in the background, a forest of evergreen trees in the midground, and a stream flowing through a grassy meadow in the foreground.

Annual climate pattern

Long term average monthly temperature ranges and daily precipitation rates for Oregon protected areas

Mount Washington Wilderness Annual Climate Normals and Monthly Temperature Patterns

Average monthly temperatures across Mount Washington Wilderness shift from winter lows to peak summer maximums while average daily precipitation rates vary through the twelve month climatology period. These NASA POWER baseline records reflect long term climate normals sampled at a representative coordinate rather than live weather forecasts.

Mean temperatureAverage minimum–maximum rangePrecipitation

Annual mean: 6.8 °C
Warmest month: August
Coolest month: December
Wettest month: December

Twelve-month climate

Compare average temperature bounds, daily precipitation, wind speed, relative humidity, and calculated daylight across the calendar year.

Mount Washington Wilderness Weather by Month: Complete Twelve-Month Climate Record

Examine the complete twelve-month climate baseline for Mount Washington Wilderness using multi-variable records derived from NASA satellite data. Comparing average temperature, precipitation rates, humidity, wind, and daylight across the annual cycle reveals distinct environmental patterns at the representative park coordinate.

	Mean temperature	Precipitation	Humidity	Wind speed	Daylight
January	-0.2 °C-11.3° to 10°	5.5 mm/day	91.1%	2.6 m/s	9.1 hours
February	0.3 °C-10° to 12.2°	4.4 mm/day	88.4%	2.5 m/s	10.2 hours
March	2.2 °C-7.4° to 15.8°	4.3 mm/day	85.6%	2.4 m/s	11.7 hours
April	4.6 °C-4.8° to 20.3°	3.6 mm/day	82.1%	2.3 m/s	13.3 hours
May	8.8 °C-1.9° to 24.6°	2.7 mm/day	78.8%	2.1 m/s	14.6 hours
June	11.8 °C1.7° to 27.6°	1.8 mm/day	77.1%	2.1 m/s	15.3 hours
July	16.2 °C4.8° to 31.1°	0.5 mm/day	69.8%	1.8 m/s	15 hours
August	16.3 °C4.8° to 32.1°	0.5 mm/day	64.9%	1.8 m/s	13.8 hours
September	13.2 °C1.4° to 30.6°	1.3 mm/day	65.1%	2 m/s	12.3 hours
October	7.4 °C-3.7° to 24.3°	3.2 mm/day	75.7%	2.2 m/s	10.7 hours
November	2.3 °C-8.2° to 15.9°	5.7 mm/day	87.5%	2.5 m/s	9.4 hours
December	-0.7 °C-11.5° to 8.6°	6.3 mm/day	91.5%	2.6 m/s	8.7 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: -0.7 °C; August: 16.3 °C; Change from December to August: +17 °C
Precipitation: December: 6.3 mm/day; August: 0.5 mm/day; Change from December to August: -5.8 mm/day
Daylight: December: 8.7 hours; August: 13.8 hours; Change from December to August: +5.1 hours

Calculated climate highlights

Comparative monthly normals for temperature, precipitation, humidity, wind, and daylight duration

Mount Washington Wilderness Monthly Climate Highlights: Warmest, Coolest, and Wettest Averages

Calculated monthly highlights identify the high and low points across twelve long term averages at a sampled coordinate in Mount Washington Wilderness. These statistical comparisons summarize annual patterns without representing observed weather extremes or localized conditions.

Warmest month: August16.3 °C
Coolest month: December-0.7 °C
Wettest month: December6.3 mm/day
Driest month: July0.5 mm/day
Most humid month: December91.5%
Windiest month: December2.6 m/s
Longest daylight: June15.3 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

Analyze monthly temperature, precipitation, and daylight rhythms across diverse regional landscapes.

Comparing Mount Washington Wilderness Climate Profiles with Other Protected Areas

Standardized monthly climate profiles enable systematic examination of temperature variation and precipitation rhythms across varied protected landscapes. Evaluating multiple geographic settings reveals distinct atmospheric patterns without assuming direct climatic parity or shared environmental conditions.