Weather on September 11 at Gateway Arch

Gateway Arch National Park

MOMidwest450 ft elevation
Avg High83°F
Avg Low60°F
Warmest201387°F
Coldest197659°F

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

Planning Your Visit

September 11th in Gateway Arch National Park (via St. Louis, MO) typically brings warm fall weather, with average highs around 83°F and lows near 60°F. Over 52 years of records, the warmest September 11th was in 2013 (87°F average), while the coldest was 1976 (59°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 17% of September 11th dates historically, with the wettest September 11th recording 1.75" 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 September 11th in Gateway Arch? Stay hydrated and seek shade during peak afternoon hours.

Year by Year History

YearHighLowPrecipSnow
202591°F57°F0"0"
202491°F52°F0"0"
202378°F58°F0.08"0"
202274°F52°F0.05"0"
202187°F63°F0"0"
202086°F70°F0"0"
201991°F71°F0"0"
201883°F57°F0"0"
201780°F47°F0"0"
201678°F65°F0"0"
201584°F65°F0.25"--
201487°F58°F1.75"0"
2013100°F73°F0"0"
201280°F59°F0"0"
201174°F59°F0"--
201068°F61°F1.63"0"
200982°F61°F0"0"
200877°F57°F0"0"
200786°F59°F0.03"0"
200685°F64°F0.36"0"
200592°F67°F0"0"
200483°F55°F0"0"
200387°F66°F0"0"
200292°F67°F0"0"
200177°F53°F0"0"
200085°F72°F0.13"0"
199986°F60°F0"0"
199878°F51°F0"0"
199774°F50°F0"0"
199681°F59°F0"0"
199577°F53°F0"0"
199486°F58°F0"0"
199375°F50°F0"0"
199275°F49°F0"0"
199191°F74°F0"0"
199085°F71°F0"0"
198971°F54°F0"0"
198886°F69°F0"0"
198784°F54°F0"0"
198576°F51°F0"0"
198287°F64°F0"0"
198186°F60°F0"0"
198080°F50°F0"0"
197990°F57°F0"0"
197893°F63°F0"0"
197779°F50°F0"0"
197676°F43°F0"0"
197586°F69°F0.58"0"
197482°F67°F0"0"
197378°F63°F0"0"
197293°F68°F0"0"
197191°F--0"0"

September 11 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

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