Greencastle Weather Forecast
- 55
- 83
Mostly Sunny
- 58
- 86
Mostly Sunny
- 64
- 87
Partly Sunny
- 63
- 90
Mostly Sunny
- 59
- 86
Partly Sunny
- 59
- 86
Mostly Sunny
Today 11 Sep Putnam
Sunny. Highs in the mid 80s. East Winds around 5 Mph.
Tonight 11 Sep Putnam
Clear. Lows in the mid 50s. East Winds around 5 Mph.
Greencastle Temperature Statistics
September Temperature
Terre Haute Regional Airport (28 miles)
Lowest 8 September, 2025
39 °FAverage September
62.3 °FHighest 2 September, 2025
82.9 °F
Climate (2020–Present)
Terre Haute Regional Airport (28 miles)
Average Low 2020–2025
45.6 °FAverage 2020–2025
55.4 °FAverage High 2020–2025
65.4 °F