Weather on April 21 at Great Sand Dunes

Great Sand Dunes National Park and Preserve

CORocky Mountain8,200 ft elevation
Avg High61°F
Avg Low25°F
Warmest198955°F
Coldest198230°F

Based on 55 years of data from Alamosa, CO

Elevation Note: Great Sand Dunes sits at 8,200 ft. Expect temperatures 29°F cooler than the data shown below, which comes from Alamosa, CO at a lower elevation.

Planning Your Visit

April 21st in Great Sand Dunes National Park (via Alamosa, CO) typically brings mild spring weather, with average highs around 61°F and lows near 25°F — a 36°F daily swing. Over 55 years of records, the warmest April 21st was in 1989 (55°F average), while the coldest was 1982 (30°F) — a 25°F range across recorded history. Precipitation has occurred on 15% of recorded April 21st dates, with snow falling 4% of the time. 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 April 21st in Great Sand Dunes? Great weather for outdoor activities.

Year by Year History

YearHighLowPrecipSnow
202555°F21°F0"0"
202466°F26°F0.05"0"
202348°F13°F0"0"
202272°F28°F0"0"
202156°F18°F0"0"
202064°F24°F0.1"0"
201973°F29°F0"0"
201849°F27°F0.25"0.3"
201764°F34°F0"0"
201652°F25°F0"0"
201556°F23°F0"0"
201466°F33°F0"0"
201355°F17°F0"0"
201267°F23°F0"--
201169°F38°F0"--
201064°F32°F0.03"0"
200968°F26°F0"0"
200863°F26°F0"0"
200763°F21°F0"0"
200669°F20°F0"0"
200563°F17°F0"0"
200457°F22°F0.05"0"
200362°F29°F0.23"0"
200259°F12°F0"0"
200162°F25°F0"0"
200073°F29°F0"0"
199959°F36°F0"0"
199860°F20°F0"0"
199766°F32°F0"0"
199655°F17°F0"0"
199544°F24°F0"0"
199471°F27°F0"0"
199366°F20°F0"0"
199264°F21°F0"0"
199161°F34°F0"0"
199068°F32°F0.03"0"
198979°F31°F0"0"
198861°F29°F0"0"
198758°F18°F0"0"
198671°F27°F0"0"
198551°F32°F0"0"
198445°F20°F0"0"
198360°F30°F0"0"
198240°F20°F0.23"0.9"
198169°F25°F0"0"
198072°F28°F0"0"
197966°F18°F0"0"
197862°F28°F0"0"
197757°F26°F0"0"
197665°F22°F0"0"
197567°F23°F0"0"
197460°F17°F0"0"
197350°F18°F0"0"
197257°F14°F0"0"
197154°F27°F0"0"

April 21 at Nearby Parks

Holiday Weather at Great Sand Dunes

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

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April 21 Weather at Great Sand Dunes National Park - Historical Data