Pennsylvania College (now Gettysburg College) Prof. Michael Jacobs' weather notes from the Battle of Gettysburg were mentioned in a June 26 article in the Florida Sun-Sentinel.
From the Sun-Sentinel:
Civil War weather: This from Jim Lushine, weather expert and Civil War aficionado:
Monday is the 150th anniversary of the battle of Gettysburg, one of the most defining moments in U.S. history, marking the decline of the Confederacy - and weather might have influenced the outcome of the battle.
Rev. Dr. Michael Jacobs, an amateur meteorologist and professor at what was then Pennsylvania College, today Gettysburg College, observed that during each day of the battle, July 1-3, 1863, high temperatures were in the 80s, winds were light and there were a few showers.