Weather on March 12 at Gateway Arch

Gateway Arch National Park

MOMidwest450 ft elevation
Avg High56°F
Avg Low34°F
Warmest199071°F
Coldest199817°F

Based on 55 years of data from St. Louis, MO

Planning Your Visit

March 12th in Gateway Arch National Park (via St. Louis, MO) typically brings cool spring weather, with average highs around 56°F and lows near 34°F. Over 55 years of records, the warmest March 12th was in 1990 (71°F average), while the coldest was 1998 (17°F) — a 54°F range across recorded history. Precipitation has occurred on 40% of recorded March 12th dates, with snow falling 4% of the time (heaviest snowfall: 2.5"). The last decade has been 5.7°F warmer on this date compared to 20-30 years ago.

The last decade has been 5.7°F warmer on this date compared to 20-30 years ago.

Planning for March 12th in Gateway Arch? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.

Year by Year History

YearHighLowPrecipSnow
202655°F32°F0"0"
202578°F32°F0"0"
202475°F42°F0"0"
202345°F32°F0.05"--
202233°F14°F0"0"
202158°F45°F0.2"0"
202058°F40°F0.74"0"
201951°F30°F0.23"0"
201847°F--0"0"
201744°F27°F0"0"
201660°F48°F0"0"
201573°F44°F0"0"
201479°F35°F1.09"0"
201337°F29°F0"0"
201265°F41°F0.38"--
201160°F33°F0"--
201070°F44°F0"0"
200936°F24°F0"0"
200860°F22°F0"0"
200763°F35°F0"0"
200680°F53°F2.01"0"
200550°F34°F0"0"
200455°F27°F0"0"
200359°F39°F2.24"0"
200247°F37°F0.15"0"
200154°F38°F0.08"0"
200038°F18°F0.51"2"
199943°F25°F0"0"
199824°F10°F0"0"
199763°F37°F0"0"
199661°F30°F0"0"
199573°F45°F0"0"
199465°F30°F0"0"
199339°F20°F0"0"
199238°F32°F0"0"
199165°F32°F1.65"0"
199083°F60°F0.91"0"
198970°F40°F0"0"
198871°F44°F0.81"0"
198753°F30°F0"0"
198661°F42°F2.21"0"
198550°F33°F0.64"0"
198435°F21°F0.51"2.5"
198340°F31°F0"0"
198260°F21°F0"0"
198042°F24°F0"0"
197960°F23°F0"0"
197846°F34°F0.13"--
197767°F44°F5.84"0"
197668°F38°F0.69"0"
197537°F30°F2.9"0"
197460°F43°F0.1"0"
197357°F44°F0"0"
197268°F40°F0"--
197169°F--0"--

March 12 at Nearby Parks

Holiday Weather at Gateway Arch

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