Mount Rainier National Park
Weather History, Monthly Averages & Best Time to Visit
WAPacific West5,400 ft
Look Up a Specific Date
Best Time to Visit
RecommendedMay - October
Summer months offer the best weather, but also the largest crowds.
AvoidWinter months for high-elevation parks (road closures)
Tip: Spring and fall offer fewer crowds with pleasant temperatures.
Monthly Climate Averages
Historical temperature and precipitation averages for Seattle, WA, based on 55+ years of weather data.
Warmest MonthAugustAvg High: 76°F / Low: 58°F
Coldest MonthDecemberAvg High: 47°F / Low: 37°F
Jan
47°/ 36°
💧 7.1"
❄️ 1.8"
Feb
50°/ 37°
💧 6.2"
❄️ 1.9"
Mar
54°/ 40°
💧 5.7"
❄️ 1.9"
Apr
59°/ 43°
💧 4.8"
❄️ 1.0"
May
66°/ 49°
💧 4.1"
Jun
71°/ 53°
💧 3.9"
Jul
76°/ 57°
💧 3.7"
Aug
76°/ 58°
💧 5.0"
Sep
71°/ 53°
💧 5.2"
Oct
61°/ 47°
💧 6.4"
Nov
52°/ 40°
💧 7.6"
❄️ 1.4"
Dec
47°/ 37°
💧 8.0"
❄️ 2.2"
Temperatures in Fahrenheit. Precipitation and snowfall in inches.
Data from Seattle, WA. Expect ~19°F cooler at elevation.
Seasonal Weather
Gateway Cities
Nearby Parks
Official NPS Websitenps.gov/mora
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