Park climate1991–2020 climate normals1,410 m source elevationNASA POWER

Review long-term climate normals including temperature, precipitation, and daylight cycles

Lake Chelan-Sawtooth Wilderness Climate: Monthly Averages and Atmospheric Data Patterns

Name: Lake Chelan-Sawtooth Wilderness monthly climate normals
Creator: NASA POWER

Analyze the twelve-month climate profile for Lake Chelan-Sawtooth Wilderness based on NASA POWER records from 1991 to 2020. This data provides average minimum and maximum temperatures, daily precipitation rates, relative humidity, wind speed, and daylight hours at a single representative coordinate. These statistics characterize long-term atmospheric rhythms rather than real-time conditions or regional weather forecasts.

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An illustrative art style landscape showing a blue mountain lake surrounded by steep, pine-covered slopes and rugged peaks under a pale sky.

Annual climate pattern

Long-term monthly temperature averages and daily precipitation rates across twelve months of recorded climatology data

Lake Chelan-Sawtooth Wilderness Annual Climate Normals, Monthly Average Temperatures, and Precipitation Patterns

Lake Chelan-Sawtooth Wilderness experiences a wide annual thermal range with average monthly minimums dropping significantly in winter and average maximums peaking during summer months. Average daily precipitation rates fluctuate throughout the year based on historical climatology records gathered from a representative coordinate.

Mean temperatureAverage minimum–maximum rangePrecipitation

Annual mean: 2.4 °C
Warmest month: August
Coolest month: December
Wettest month: November

Twelve-month climate

Track average temperature bounds, daily precipitation rates, humidity, wind speed, and daylight hours across the year.

Lake Chelan-Sawtooth Wilderness Monthly Climate Normals and Twelve-Month Weather Comparison

Examine twelve consecutive months of long-term climate normals for Lake Chelan-Sawtooth Wilderness using representative coordinate data spanning 1991 to 2020. Systematic comparison of temperature ranges, average precipitation rates, atmospheric moisture, and daylight duration reveals distinct seasonal shifts across the protected landscape.

	Mean temperature	Precipitation	Humidity	Wind speed	Daylight
January	-6.7 °C-21° to 1.2°	4.6 mm/day	96.1%	1.8 m/s	8.6 hours
February	-6.2 °C-19.4° to 1.4°	3.5 mm/day	96%	1.8 m/s	9.9 hours
March	-3.9 °C-16.2° to 3.1°	3.3 mm/day	95.7%	1.7 m/s	11.6 hours
April	-0.4 °C-11.7° to 10.8°	2.2 mm/day	88.7%	1.6 m/s	13.5 hours
May	6.1 °C-4.9° to 20.5°	2 mm/day	77%	1.7 m/s	15 hours
June	9.7 °C-1° to 23.7°	1.8 mm/day	75.1%	1.7 m/s	15.8 hours
July	13.5 °C2° to 26.8°	1 mm/day	71.9%	1.6 m/s	15.4 hours
August	13.6 °C2.4° to 27.3°	0.9 mm/day	68.7%	1.6 m/s	14.1 hours
September	9.9 °C-2° to 24.9°	1.4 mm/day	69.3%	1.6 m/s	12.3 hours
October	3.2 °C-7.4° to 18.1°	3.2 mm/day	79.9%	1.6 m/s	10.5 hours
November	-3 °C-15.7° to 6.7°	5.1 mm/day	91.7%	1.7 m/s	9 hours
December	-7.3 °C-21° to 1.1°	4.8 mm/day	96.7%	1.8 m/s	8.2 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: -7.3 °C; August: 13.6 °C; Change from December to August: +20.9 °C
Precipitation: December: 4.8 mm/day; August: 0.9 mm/day; Change from December to August: -3.9 mm/day
Daylight: December: 8.2 hours; August: 14.1 hours; Change from December to August: +5.9 hours

Calculated climate highlights

Comparing long-term monthly normals for temperature, precipitation, humidity, wind, and daylight duration

Lake Chelan-Sawtooth Wilderness Calculated Monthly Climate Highlights and Averages

Calculated monthly normals identify the warmest, coolest, wettest, and driest calendar periods derived from thirty years of stored climatology data at a representative coordinate. These comparative averages summarize annual patterns across multiple measured variables without representing observed weather extremes or localized conditions.

Warmest month: August13.6 °C
Coolest month: December-7.3 °C
Wettest month: November5.1 mm/day
Driest month: August0.9 mm/day
Most humid month: December96.7%
Windiest month: January1.8 m/s
Longest daylight: June15.8 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

Examine monthly temperature, precipitation, and atmospheric normals across diverse protected areas

Beyond Lake Chelan-Sawtooth Wilderness: Compare Long-Term Park Climate Profiles

Reviewing monthly climate normals helps contrast annual temperature patterns and precipitation rhythms across distinct protected landscapes. Standardized weather data metrics reveal atmospheric variations between different geographic settings and regional boundaries.