Weather on March 21 at Mount Rainier

Mount Rainier National Park

WAPacific West5,400 ft elevation
Avg High55°F
Avg Low41°F
Warmest200455°F
Coldest199439°F

Based on 56 years of data from Seattle, WA

Elevation Note: Mount Rainier sits at 5,400 ft. Expect temperatures 19°F cooler than the data shown below, which comes from Seattle, WA at a lower elevation.

Planning Your Visit

March 21st in Mount Rainier National Park (via Seattle, WA) typically brings cool spring weather, with average highs around 55°F and lows near 41°F. Over 56 years of records, the warmest March 21st was in 2004 (55°F average), while the coldest was 1994 (39°F) — a 16°F range across recorded history. Rain or other precipitation has occurred on about 55% of March 21st dates historically, with the wettest March 21st recording 1.6" of rain. Temperatures on this date have remained relatively stable over the past several decades.

Temperatures on this date have remained relatively stable over the past several decades.

Planning for March 21st in Mount Rainier? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.

Year by Year History

YearHighLowPrecipSnow
202653°F41°F0"--
202553°F41°F0.64"--
202459°F47°F0.25"--
202356°F44°F0"--
202251°F42°F0.25"--
202145°F40°F0"--
202055°F38°F0"--
201961°F45°F0"--
201859°F34°F0.36"--
201757°F46°F0.43"--
201656°F47°F0.71"--
201559°F49°F0.36"--
201452°F39°F0"--
201350°F36°F0.25"--
201249°F36°F0.1"--
201153°F42°F0.03"--
201057°F48°F0.08"--
200951°F31°F0"--
200849°F38°F0"--
200750°F32°F0"--
200652°F46°F0.18"--
200550°F35°F0.28"--
200468°F41°F0"--
200353°F45°F1.6"--
200253°F36°F0"--
200153°F40°F0"--
200057°F43°F0.03"--
199959°F47°F0.43"--
199854°F44°F0.46"0"
199757°F35°F0"0"
199659°F42°F0.15"0"
199549°F36°F0.08"0"
199445°F34°F0.89"0"
199361°F47°F0.1"0"
199266°F40°F0"0"
199154°F38°F0"0"
199058°F41°F0"0"
198952°F44°F0.18"0"
198854°F43°F0.03"0"
198760°F37°F0"0"
198655°F45°F0.84"0"
198558°F36°F0.48"0"
198455°F46°F0.03"0"
198359°F46°F0.2"0"
198256°F34°F0"0"
198164°F43°F0.15"0"
198054°F41°F0"0"
197961°F36°F0"0"
197862°F44°F0"0"
197755°F46°F0"0"
197658°F41°F0.08"0"
197549°F37°F0.58"0"
197457°F34°F0"0"
197354°F40°F0"0"
197252°F46°F0.69"0"
197151°F36°F0"0"

March 21 at Nearby Parks

Holiday Weather at Mount Rainier

Official NPS WebsiteVisit nps.gov/mora for park information, alerts, and reservations

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March 21 Weather at Mount Rainier National Park - Historical Data