Idaho · 34 stations

Idaho Frost Dates: 34 Weather Stations

34 NOAA weather stations in Idaho with at least 25 years of frost records.

Weather stations with their typical (50% chance) frost dates
Station	Zone	Last spring frost (50%)	First fall frost (50%)	Frost-free days
Bern, ID	5a	June 17	September 3	77
Boise (Air Terminal), ID	7b	April 24	October 21	179
Bonners Ferry, ID	6b	April 30	October 4	154
Burley, ID	6b	May 7	October 4	150
Cabinet Gorge, ID	6b	May 9	October 8	153
Cambridge, ID	6a	May 15	September 27	134
Chilly Barton Flat, ID	5a	June 14	September 8	86
Cottonwood, ID	6b	May 6	October 13	156
Dubois, ID	5b	May 18	September 30	132
Emmett, ID	7a	April 30	October 17	168
Fort Hall, ID	5b	May 20	September 20	119
Garden Valley, ID	6b	June 1	September 10	102
Hazelton, ID	6b	May 7	October 5	149
Idaho Falls 46 W, ID	4b	June 11	September 6	89
Kellogg, ID	6b	May 14	September 26	131
Mackay Lost River Ranger Station, ID	5b	June 1	September 20	109
McCall, ID	5a	June 22	September 2	72
Minidoka Dam, ID	6a	May 16	October 1	136
Nezperce, ID	6b	May 24	September 20	116
Oakley, ID	6b	May 15	October 2	137
Paul, ID	6a	May 6	October 6	151
Payette, ID	7a	April 19	October 20	183
Pocatello (Airport), ID	6a	May 23	September 18	117
Preston, ID	6a	May 16	September 28	133
Priest River, ID	6a	May 20	September 13	114
Richfield, ID	6a	May 24	September 26	123
Saint Maries, ID	6b	May 3	October 4	152
Shoshone, ID	6b	April 24	October 16	173
near Hidden Spring, ID	7a	May 17	October 12	147
near Lewiston, ID	7b	April 6	October 26	200
near Murphy, ID	7b	April 12	October 26	193
near Orofino, ID	7b	April 20	October 20	182
near Paris, ID	5a	May 19	September 21	123
near Pocatello, ID	6b	May 16	October 2	137