The first part of his diary is basically notations and then he makes a few sporadic entries from June 20th to August 25th. Daily entries start on August 8th. To read the entire diary and/or to see the scans of the diary click here.
Jun 20 – very Hot Thermometor stands 93. in the shade
Jun 21 – Hot and dry in shade 97.
Jun 22 – Hot as ever very sultry 97. in shade
Jul 5 – Julia Chiles Died half past Eleven
Jul 16 – At noon 114. in the sun in the shade 101
 Galesburg, Michigan
 Sarah (Crawford) Keith, his third wife
 Most likely referring to his children, Ethan, Nancy and Hannah, but may also include Henry and Lois, his two oldest children by his first wife, Minerva (Payson) Keith