New Castle Weather Forecast
- 57
- 67
Chance Rain Showers
- 63
- 79
Rain Showers
- 66
- 84
Mostly Sunny
- 70
- 88
Partly Sunny
- 67
- 89
Rain Showers Likely
- 55
- 79
Chance Rain Showers
Today 15 May Henry
Sunny, then becoming partly cloudy toward Daybreak, then becoming mostly Cloudy, then becoming partly cloudy late this afternoon. A slight chance of Showers through early afternoon. Highs in the upper 60s. Light and variable Winds, becoming south 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 20 percent.
Tonight 15 May Henry
Mostly clear through the late Overnight, then partly cloudy with Showers likely with a slight chance of Thunderstorms toward daybreak. Not as cool with Lows in the upper 50s. South Winds 10 to 15 Mph. Gusts up to 20 Mph, increasing to 30 Mph toward daybreak. Chance of rain 70 percent.
New Castle Temperature Statistics
May Temperature
Anderson Municipal Airport (17.4 miles)
Lowest 2 May, 2026
34 °FAverage May
52.9 °FHighest 12 May, 2026
75.2 °F
Climate (2021–Present)
Anderson Municipal Airport (17.4 miles)
Average Low 2021–2026
44.1 °FAverage 2021–2026
51.6 °FAverage High 2021–2026
62.3 °F