Weather on March 21 at Biscayne

Biscayne National Park

FLSoutheast
Avg High78°F
Avg Low66°F
Warmest200383°F
Coldest197159°F

Based on 56 years of data from Miami, FL

Planning Your Visit

March 21st in Biscayne National Park (via Miami, FL) typically brings pleasant spring weather, with average highs around 78°F and lows near 66°F. Over 56 years of records, the warmest March 21st was in 2003 (83°F average), while the coldest was 1971 (59°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 20% of March 21st dates historically, with the wettest March 21st recording 2.44" 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 Biscayne? Great weather for outdoor activities.

Year by Year History

YearHighLowPrecipSnow
202680°F60°F0"--
202586°F60°F0"--
202478°F61°F0"--
202375°F59°F0"--
202284°F71°F0"--
2021--56°F0"--
202082°F75°F0"--
201976°F63°F0"--
201888°F71°F0"--
201779°F63°F0"--
201684°F66°F0.25"--
201581°F68°F0"--
201480°F64°F0"--
201380°F66°F0"--
201279°F73°F0"--
201178°F64°F0.25"--
201072°F54°F0"0"
200978°F66°F0.94"0"
200875°F71°F1.52"--
200775°F69°F0"--
200683°F73°F0"0"
200576°F62°F0"0"
200478°F71°F0"0"
200387°F79°F0.05"0"
200282°F70°F0"0"
200178°F58°F0"0"
200081°F71°F0"0"
199979°F71°F0"0"
199875°F64°F0"0"
199778°F71°F2.03"0"
199667°F51°F0"0"
199579°F67°F0"0"
199483°F72°F0"0"
199378°F68°F0.66"0"
199271°F55°F0"0"
199177°F70°F0"0"
199073°F62°F0"0"
198978°F73°F0"0"
198869°F53°F0"0"
198778°F69°F0"0"
198677°F58°F2.44"0"
198574°F69°F0.05"0"
198478°F63°F0.3"0"
198384°F62°F0"0"
198282°F75°F0"0"
198170°F51°F0"0"
198090°F70°F0"0"
197981°F64°F0"0"
197875°F72°F0"0"
197781°F76°F0"0"
197679°F74°F0"0"
197576°F60°F0"0"
197479°F73°F0"0"
197380°F71°F1.55"0"
197278°F72°F0"0"
197170°F49°F0"0"

March 21 at Nearby Parks

Holiday Weather at Biscayne

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

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