Weather on December 31 at Great Sand Dunes

Great Sand Dunes National Park and Preserve

CORocky Mountain8,200 ft elevation
Avg High32°F
Avg Low-3°F
Warmest199634°F
Coldest1974-11°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

December 31st in Great Sand Dunes National Park (via Alamosa, CO) typically brings cold winter weather, with average highs around 32°F and lows near -3°F — a 35°F daily swing. Over 55 years of records, the warmest December 31st was in 1996 (34°F average), while the coldest was 1974 (-11°F) — a 45°F range across recorded history. Precipitation has occurred on 9% of recorded December 31st dates, with snow falling 9% of the time (heaviest snowfall: 2.7"). The last decade has been 4.2°F cooler on this date compared to 20-30 years ago.

The last decade has been 4.2°F cooler on this date compared to 20-30 years ago.

Planning for December 31st in Great Sand Dunes? Bundle up with warm layers and protect extremities from the cold.

Year by Year History

YearHighLowPrecipSnow
202548°F7°F0"--
202446°F5°F0"0"
202335°F-4°F0"0"
202237°F7°F0"0"
202139°F18°F0"0"
202028°F-7°F0"0"
201919°F-23°F0"0"
201823°F-12°F0"0"
201763°F5°F0"0"
201626°F-7°F0"0"
201534°F-4°F0"0"
201417°F-1°F0.05"0.5"
201318°F-10°F0"0"
201216°F-14°F0.05"0.3"
201148°F11°F0"--
201032°F8°F0.08"0.3"
200932°F4°F0"0"
200840°F-4°F0"0"
200723°F-23°F0"0"
200621°F-4°F0"0"
200543°F3°F0"0"
200447°F11°F0"0"
200337°F2°F0"0"
200244°F0°F0"0"
200126°F10°F0"0"
200043°F0°F0"0"
199944°F-3°F0"0"
199842°F6°F0"0"
199725°F-7°F0"0"
199652°F17°F0"0"
199538°F10°F0.28"0.9"
199437°F13°F0"0"
199337°F0°F0"0"
199232°F-8°F0"0"
199119°F0°F0"0"
199019°F-19°F0"0"
198933°F-8°F0"0"
198835°F-8°F0"0"
198715°F-27°F0"0"
198635°F-8°F0"0"
198532°F4°F0"0"
198435°F6°F0"0"
198319°F-14°F0"0"
198226°F-19°F0"0"
198137°F8°F0"0"
198055°F4°F0"0"
197918°F-19°F0"0"
197829°F1°F0"0"
197736°F10°F0.25"2.7"
197639°F3°F0"0"
197529°F2°F0"0"
19748°F-30°F0"0"
197315°F-8°F0"0"
197215°F-24°F0"0"
197130°F0°F0"0"

December 31 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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