October in Missouri is mild: NOAA's 1991–2020 normals for St. Louis Lambert International Airport give an average high of 69.2°F, a low of 49.1°F and 3.15 inches of precipitation, while Kansas City International's normals are a 67.2°F high and a 45.6°F low. Snow is nearly absent (0.3 inches at Kansas City). This page is a dated monthly snapshot reviewed October 20, 2026, not live weather or a live events feed.
Missouri this month
A dated monthly snapshot of Missouri weather normals and verified event dates.
This month at a glance
| Topic | Detail |
|---|---|
| St. Louis high / low | 69.2°F / 49.1°F (NOAA 1991–2020); 3.15 inches |
| Kansas City high / low | 67.2°F / 45.6°F; 3.25 inches |
| Notes | October 27 is an NPS fee-free day (Arch tram fee waived by $3) |
For live conditions use the National Weather Service. See the events page.
How this page is maintained
We update it monthly; last review October 20, 2026. Between reviews it may be out of date.
Weather and what to wear
NOAA monthly normals.
Climate table →
This week
Verified schedule notes.
Events →
Seasonal picks
Choose a month by weather.
Best time to visit →
Trending neighborhood
Compare Missouri destinations.
Compare regions →Frequently asked questions
Is this page updated daily?
No. It is a monthly snapshot.
Where do the numbers come from?
NOAA NCEI climate normals and the agencies; see sources below.
What should I wear in October?
NOAA's normals suggest mild days and cool nights; bring a layer.
Sources
Facts on this page were read from the sources below on October 20, 2026. Hours, fares, prices and event dates change — confirm with the source before you travel. How we research and update.
- U.S. Climate Normals 1991-2020, St. Louis Lambert International Airport (USW00013994) — NOAA National Centers for Environmental Information
- Buy Tickets, Gateway Arch — Gateway Arch Park Foundation and National Park Service