Greencastle Weather Forecast
- 70
- 89
Chance Thunderstorms
- 68
- 89
Slight Chance Thunderstorms
- 69
- 93
Slight Chance Thunderstorms
- 66
- 86
Chance Rain Showers
- 65
- 82
Chance Rain Showers
- 64
- 81
Chance Rain Showers
Today 15 Aug Franklin
Mostly sunny. Scattered Showers and Thunderstorms this afternoon. Highs in the upper 80s. Northeast Winds around 5 Mph. Chance of rain 40 percent.
Tonight 15 Aug Franklin
Partly cloudy. A slight chance of Showers and Thunderstorms in the evening. Patchy fog after midnight. Humid with Lows in the upper 60s. East Winds around 5 Mph in the Evening, becoming light and variable. Chance of rain 20 percent.
Greencastle Temperature Statistics
August Temperature
Hagerstown, Washington County Regional Airport (5.6 miles)
Lowest 3 August, 2025
56.6 °FAverage August
73.8 °FHighest 12 August, 2025
91 °F
Climate (2020–Present)
Hagerstown, Washington County Regional Airport (5.6 miles)
Average Low 2020–2025
47.9 °FAverage 2020–2025
56.8 °FAverage High 2020–2025
65.9 °F