Meramec State Park Weather Forecast
- 47
- 67
Mostly Sunny
- 50
- 76
Rain Showers
- 54
- 81
Rain Showers Likely
- 43
- 68
Mostly Sunny
- 50
- 73
Slight Chance Rain Showers
- 57
- 81
Slight Chance Thunderstorms
Today 7 May Franklin
Sunny. Highs in the upper 60s. Southwest Winds 5 to 10 Mph.
Tonight 7 May Franklin
Mostly clear. Not as cool with Lows in the upper 40s. Southwest Winds 5 to 10 Mph.
Meramec State Park Temperature Statistics
May Temperature
Washington Regional Airport (26.1 miles)
Lowest 1 May, 2026
42.8 °FAverage May
62 °FHighest 4 May, 2026
84.2 °F
Climate (2021–Present)
Washington Regional Airport (26.1 miles)
Average Low 2021–2026
47.7 °FAverage 2021–2026
58.4 °FAverage High 2021–2026
69.6 °F