Grantham Wind Forecast
Grantham Wind Statistics
June Wind
Harrisburg, Capital City Airport (8.1 miles)
Strongest 1 June, 2026
12.8mph SEAverage June
6.6mph
Climate (2010–Present)
Harrisburg, Capital City Airport (8.1 miles)
Strongest 14 April, 2024
59.9mph NNWAverage 2021–2026
6.8mph