Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
O'Fallon Weather in October
In O'Fallon, October brings pleasant daytime temperatures around 20°C (68°F), with nights cooling to 7°C (45°F). Expect quite a bit of rainfall this month.
Rainfall in O'Fallon in October
Past climate data indicates that roughly 9 days will see rain, totalling around 86 mm (3.4 in) for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in O'Fallon in October
Weather in O'Fallon is at its excellent in October. Highs reach 20°C (68°F), while nights settle around 7°C (45°F). Conditions are often most pleasant around the middle of the day. Nights drop to 7°C (45°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.
Sunshine in O'Fallon in October
With approximately 206 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.If you favor pleasant temperatures and minimal rainfall, October is one of the best months to visit O'Fallon.
O'Fallon Temperature in October
Min Temperature
7°C (45°F)
Max Temperature
20°C (68°F)
Chance of Rain
29%
Precipitation
86 mm (3.4 in)
Rainy days
9 days
Humidity
68% *
Sunshine
206 hours *
Percentage Sunshine
60% *
* Data from: St. Louis, the United States of America (48 KM, 29 Miles).
O'Fallon Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in O'Fallon - and find the best time to visit.
Best Places in the United States of America in October
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in October →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in O'Fallon in October
Pleasant temperatures in October mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
What To Do in O'Fallon in October
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling9/10 -
Walking9/10 -
Barbeque8/10 -
Camping4/10 -
Outdoor sports9/10
O'Fallon 3-Day Forecast
More climate data for O'Fallon
Temperature Rainfall Sunshine Humidity
See the full O'Fallon climate overview or explore weather in the United States of America.
Popular in October
Where to go in October - average daytime high across popular destinations.
Miami Beach
29°C (84°F) Orlando
29°C (84°F) Kissimmee
29°C (84°F) Destin26°C (79°F) Los Angeles24°C (75°F) New York City19°C (66°F) Big Bear Lake19°C (66°F) Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
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