Weather on December 18 at Gateway Arch

Gateway Arch National Park

MOMidwest450 ft elevation
Avg High41°F
Avg Low24°F
Warmest200254°F
Coldest20009°F

Based on 52 years of data from St. Louis, MO

Planning Your Visit

December 18th in Gateway Arch National Park (via St. Louis, MO) typically brings chilly winter weather, with average highs around 41°F and lows near 24°F. Over 52 years of records, the warmest December 18th was in 2002 (54°F average), while the coldest was 2000 (9°F) — a 45°F range across recorded history. Precipitation has occurred on 19% of recorded December 18th dates, with snow falling 2% 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 December 18th in Gateway Arch? Bring layers as temperatures can vary throughout the day.

Year by Year History

YearHighLowPrecipSnow
202558°F27°F0.86"--
202446°F29°F0.03"0"
202339°F26°F0"0"
202234°F20°F0"0"
202139°F30°F0.64"0"
202042°F25°F0"0"
201932°F15°F0"0"
201850°F26°F0"0"
201755°F46°F0"0"
201618°F5°F0"--
201536°F28°F0"0"
201439°F29°F0"0"
201343°F26°F0"0"
201242°F34°F0"--
201148°F24°F0"--
201032°F17°F0"0"
200954°F23°F0"0"
200830°F18°F0"0"
200736°F12°F0"0"
200664°F42°F0"0"
200542°F20°F0"0"
200444°F25°F0"0"
200342°F32°F0.15"0"
200262°F46°F0.76"0"
200148°F28°F0.3"0"
200016°F2°F0"0"
199955°F31°F0"0"
199845°F28°F0"0"
199751°F26°F0"0"
199627°F13°F0.08"0.4"
199544°F36°F1.27"0"
199455°F26°F0"0"
199350°F35°F0"0"
199240°F30°F0"0"
199141°F24°F0"0"
199046°F30°F0.51"0"
198923°F9°F0"0"
198833°F22°F0"0"
198522°F7°F0"0"
198445°F28°F0.3"0"
198245°F28°F0"0"
198123°F2°F0"--
198046°F32°F0"0"
197925°F9°F0"0"
197847°F33°F0"0"
197755°F35°F0"0"
197658°F26°F0"0"
197522°F8°F0"0"
197434°F15°F0"0"
197328°F13°F0"0"
197239°F16°F0"0"
197146°F17°F0"0"

December 18 at Nearby Parks

Holiday Weather at Gateway Arch

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

Explore More at Gateway Arch

See historical weather for other dates

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