Grantham Wind Forecast
Grantham Wind Statistics
January Wind
Harrisburg, Capital City Airport (8.1 miles)
Strongest 11 January, 2026
21.9mph WAverage January
7.5mph
Climate (2010–Present)
Harrisburg, Capital City Airport (8.1 miles)
Strongest 14 April, 2024
59.9mph NNWAverage 2021–2026
6.8mph