St. Louis in October
In October, St. Louis averages 20°C (68°F) during the day and 10°C (51°F) at night, with frequent rain — about 14 days of the month see precipitation (106 mm total).
ShoulderConditions are comfortable for sightseeing without being sweltering. Plan for unsettled weather and bring rain gear.
It's peak hurricane season in St. Louis during October. Travel is possible but expect storm risk, possible flight disruption, and generally lower travel insurance coverage.
How October compares to the rest of the year in St. Louis
October is in the middle of the year for warmth in St. Louis (6th of 12) and moderately rainy compared to the rest of the year (7th of 12). Daytime temperature runs 1°C above the annual average (19°C). October runs 7°C cooler than September (27°C) and cools 8°C in November (12°C).
October sunrise & sunset in St. Louis
Times shown for St. Louis local time (America/Chicago), calculated for the 15th of October. They shift by a few minutes day to day across the month.
Photography light in St. Louis — October
Golden-hour and blue-hour windows for the 15th of October, in St. Louis's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — St. Louis in October
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on October's tier (Shoulder) and St. Louis's popularity.
Crowds & pricing — October in St. Louis
St. Louis is in a shoulder season month — fewer crowds, slightly lower prices, and a calmer atmosphere than peak weeks. Most major sights stay open with normal hours, though a handful of seasonal restaurants or boat trips may run reduced schedules. Many regulars consider these months the best time to visit because you trade a small amount of weather reliability for a much more pleasant on-the-ground experience.
Why this tier: excellent tourism weather peak hazard season (1 active)
Sun & mosquito risk — October in St. Louis
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
St. Louis in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 5°C / 41°F | -4°C / 25°F | 74 mm | 13 | — |
| February | 7°C / 45°F | -4°C / 26°F | 72 mm | 13 | — |
| March | 13°C / 56°F | 3°C / 37°F | 133 mm | 16 | — |
| April | 19°C / 66°F | 8°C / 46°F | 132 mm | 16 | — |
| May | 25°C / 76°F | 14°C / 58°F | 130 mm | 20 | — |
| June | 30°C / 86°F | 20°C / 67°F | 137 mm | 17 | — |
| July | 31°C / 87°F | 21°C / 70°F | 152 mm | 17 | — |
| August | 30°C / 85°F | 20°C / 69°F | 140 mm | 18 | — |
| September | 27°C / 81°F | 17°C / 63°F | 112 mm | 13 | — |
| October | 20°C / 68°F | 10°C / 51°F | 106 mm | 14 | — |
| November | 12°C / 54°F | 3°C / 37°F | 77 mm | 12 | — |
| December | 8°C / 46°F | -1°C / 31°F | 76 mm | 10 | — |
Other cities with similar October weather
🌍 See the full ranked list of climate twins for St. Louis in October →
Frequently asked questions
How hot is St. Louis in October?
In October, St. Louis averages a high of 20°C (68°F) and a low of 10°C (51°F) — generally mild and pleasant.
Does it rain a lot in St. Louis in October?
October can be fairly wet in St. Louis, with about 14 rainy days on average.
Is October a good time to visit St. Louis?
October is mild and pleasant but on the rainy side. It suits travelers who are comfortable with mild and pleasant weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for St. Louis in October?
Pack light layers for warm days and cooler evenings, plus a compact umbrella or rain jacket. See the full October packing list for St. Louis for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.