Greencastle Weather Forecast
- 67
- 87
Slight Chance Thunderstorms
- 67
- 91
Partly Sunny
- 66
- 86
Mostly Sunny
- 71
- 94
Mostly Sunny
- 70
- 93
Mostly Sunny
- 67
- 92
Partly Sunny
Today 12 Sep Warren
Mostly cloudy until late afternoon then becoming mostly sunny. Chance of Thunderstorms early in the morning. Slight chance of Thunderstorms late in the Morning, then chance of Thunderstorms in the afternoon. Highs in the mid 80s. Southwest Winds up to 10 Mph. Chance of Thunderstorms 40 percent.
Tonight 12 Sep Warren
Mostly clear. A 20 percent chance of Thunderstorms in the evening. Lows in the upper 60s. Southwest Winds up to 5 Mph.
Greencastle Temperature Statistics
September Temperature
Bowling Green, Bowling Green-Warren County Regional Airport (9.3 miles)
Lowest 7 September, 2026
65.6 °FAverage September
83.5 °FHighest 5 September, 2026
101.6 °F
Climate (2021–2026)
Bowling Green, Bowling Green-Warren County Regional Airport (9.3 miles)
Average Low 2021–2026
50.8 °FAverage 2021–2026
61.3 °FAverage High 2021–2026
71.8 °F