Peak summer highs in Irwindale average 87°F — warm enough for a splash pad through most of the season without being punishing at midday.
Month
Average high
June
80°F
July
86°F
August
87°F
The typical Irwindale pad runs about 13 weeks a year. Municipal pads often close early for maintenance, so the last few weeks of the season are the least reliable.
What to expect
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 1 pads in Irwindale:
$10 per vehicleattractionzero-depthrestroomsticketed
This county recreation area combines a water play area with a roped-off swim beach on a 70-acre lake at the base of the San Gabriels. The per-vehicle entry fee covers the whole group for a full beach-style day inland.