We track 3 splash pads in O'Fallon — the 3rd best-served city in Missouri. 2 of them are free.
Peak summer highs in O'Fallon average 89°F — warm enough for a splash pad through most of the season without being punishing at midday.
| Month | Average high |
|---|---|
| June | 85°F |
| July | 89°F |
| August | 88°F |
The things that decide a trip with small children — a toilet, some shade, somewhere to sit — are exactly what listings usually leave out. Across the 3 pads in O'Fallon:
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O'Fallon's city aquatic center bundles a splash pad with a lazy river, slides, and lap lanes, with toddler admission priced at just a couple dollars. It is the paid step up when the town's free pads stop being enough.
✓ Last confirmed for the 2026 season
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O'Day Park's water feature is styled as a naturalistic splash creek woven into a dramatic nature-themed playground. Parents of the smallest kids should note the rockwork has some hard edges, so water shoes are a good idea.
✓ Last confirmed for the 2024 season
Freepublic-parkzero-depthtoddlerplayground-nearby
Designed as an all-inclusive, ADA-accessible playground, Brendan's pairs its splash pad with ramped toddler sections and climbing nets so children of all abilities can play side by side. It is one of the metro's standout accessible play destinations.
✓ Last confirmed for the 2026 season
Know a splash pad we're missing in O'Fallon?Add it to the guide.