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 April
In O'Fallon, April 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 April
You can expect rain on roughly 11 days based on historical data, averaging 116 mm (4.6 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 April
O'Fallon in April gets highs of 20°C (68°F) during the day and drops to 7°C (45°F) at night. A light jacket or extra layer can be useful, especially outside the warmest hours 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 April
The month enjoys around 225 hours of sunshine, creating mostly sunny days with good weather conditions.If your ideal day consists of dry skies and pleasant temperatures, October typically offers the best circumstances for O'Fallon.
O'Fallon Temperature in April
Min Temperature
7°C (45°F)
Max Temperature
20°C (68°F)
Chance of Rain
37%
Precipitation
116 mm (4.6 in)
Rainy days
11 days
Humidity
63% *
Sunshine
225 hours *
Percentage Sunshine
56% *
* 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 April
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 April →
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 April
Pleasant temperatures in April 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. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
What To Do in O'Fallon in April
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling9/10 -
Walking9/10 -
Camping3/10 -
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 April
Where to go in April - average daytime high across popular destinations.
Orlando
29°C (84°F) Kissimmee
29°C (84°F) Miami Beach27°C (81°F) Destin
24°C (75°F) Los Angeles20°C (68°F) New York City
16°C (61°F) Big Bear Lake15°C (59°F) Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
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