Buffalo Rock State Park Weather Forecast
- 60
- 88
Partly Sunny
- 63
- 87
Rain Showers Likely
- 62
- 81
Chance Thunderstorms
- 63
- 78
Rain Showers Likely
- 62
- 79
Chance Thunderstorms
- 60
- 76
Chance Rain Showers
- 58
- 76
Slight Chance Thunderstorms
Today 18 Sep La Salle
Mostly sunny. Highs in the upper 80s. Southeast Winds around 5 Mph.
Tonight 18 Sep La Salle
Mostly clear early in the Evening, then becoming partly cloudy. Lows around 60. East Winds around 5 Mph.
Buffalo Rock State Park Temperature Statistics
September Temperature
Illinois Valley Regional Airport (11.8 miles)
Lowest 7 September, 2025
39.6 °FAverage September
65.2 °FHighest 14 September, 2025
91.6 °F
Climate (2020–Present)
Illinois Valley Regional Airport (11.8 miles)
Average Low 2020–2025
43.1 °FAverage 2020–2025
52.6 °FAverage High 2020–2025
62.1 °F