Oklahoma frost dates: I

City	Last frost	First frost	Season	Zone
Idabel	Mar 31	Nov 3	217 d	8a
Indiahoma	Mar 28	Nov 6	223 d	8a
Indianola	Mar 31	Nov 3	217 d	7b
Inola	Apr 7	Oct 30	206 d	7b
Isabella	Apr 7	Nov 2	209 d	7a