Idaho planting calendars
Planting calendars, USDA hardiness zones, and average frost dates for 134 Idaho locations (Acequia, ID, Ammon, ID, Ashton, ID, Bancroft, ID, Banks, ID, Bennington, ID, Blanchard, ID, Bliss, ID, Bloomington, ID, Boise, ID, Boise, ID, Bonners Ferry, ID, and 122 more). Pick a location to see its zone, average last and first frost dates, growing-season length, and a printable per-crop planting calendar, all from public NOAA and USDA data.
Locations in Idaho
| Location | USDA zone | Last frost | First frost | Season (days) |
|---|---|---|---|---|
| Acequia | 6a −10 to −5 °F | May 16 | Oct 1 | 136 |
| Ammon | 5b −15 to −10 °F | May 9 | Oct 1 | 142 |
| Ashton | 5a −20 to −15 °F | May 21 | Sep 21 | 121 |
| Bancroft | 5a −20 to −15 °F | May 23 | Sep 24 | 121 |
| Banks | 7a 0 to 5 °F | Jun 1 | Sep 10 | 102 |
| Bennington | 5a −20 to −15 °F | Jun 17 | Sep 3 | 77 |
| Blanchard | 6b −5 to 0 °F | May 12 | Sep 21 | 130 |
| Bliss | 7a 0 to 5 °F | May 3 | Oct 1 | 151 |
| Bloomington | 5a −20 to −15 °F | May 19 | Sep 21 | 123 |
| Boise | 7a 0 to 5 °F | Apr 24 | Oct 21 | 179 |
| Boise | 7a 0 to 5 °F | May 17 | Oct 12 | 147 |
| Bonners Ferry | 6a −10 to −5 °F | May 4 | Sep 30 | 145 |
| Bonners Ferry | 6b −5 to 0 °F | Apr 30 | Oct 4 | 154 |
| Bruneau | 7a 0 to 5 °F | Apr 17 | Oct 17 | 181 |
| Buhl | 7a 0 to 5 °F | May 17 | Sep 29 | 132 |
| Burley | 6b −5 to 0 °F | May 7 | Oct 4 | 150 |
| Carey | 6a −10 to −5 °F | Jun 16 | Sep 9 | 85 |
| Castleford | 6b −5 to 0 °F | May 17 | Sep 29 | 132 |
| Challis | 5b −15 to −10 °F | May 14 | Sep 25 | 131 |
| Chubbuck | 6b −5 to 0 °F | May 16 | Oct 2 | 137 |
| Coolin | 6a −10 to −5 °F | May 20 | Sep 13 | 114 |
| Cottonwood | 6b −5 to 0 °F | May 6 | Oct 13 | 156 |
| Cottonwood | 6b −5 to 0 °F | May 24 | Sep 20 | 116 |
| Council | 6a −10 to −5 °F | May 10 | Oct 2 | 145 |
| Craigmont | 6b −5 to 0 °F | May 23 | Sep 25 | 121 |
| Culdesac | 7a 0 to 5 °F | May 23 | Sep 25 | 121 |
| Donnelly | 5a −20 to −15 °F | May 30 | Sep 19 | 110 |
| Dover | 6b −5 to 0 °F | May 8 | Sep 28 | 141 |
| Downey | 6b −5 to 0 °F | May 31 | Sep 18 | 110 |
| Eagle | 7a 0 to 5 °F | Apr 30 | Oct 17 | 168 |
| Elk | 5b −15 to −10 °F | May 2 | Oct 10 | 159 |
| Elk River | 6b −5 to 0 °F | May 16 | Sep 23 | 128 |
| Fairfield | 5a −20 to −15 °F | Jun 16 | Sep 6 | 80 |
| Fairfield | 6a −10 to −5 °F | Jun 8 | Sep 14 | 97 |
| Ferdinand | 6a −10 to −5 °F | May 6 | Oct 13 | 156 |
| Fernwood | 6a −10 to −5 °F | May 16 | Sep 23 | 128 |
| Fernwood | 6b −5 to 0 °F | May 3 | Oct 4 | 152 |
| Filer | 7a 0 to 5 °F | May 9 | Oct 4 | 147 |
| Fort Hall | 5b −15 to −10 °F | May 20 | Sep 20 | 119 |
| Gannett | 5b −15 to −10 °F | Jun 16 | Sep 9 | 85 |
| Garden Valley | 6b −5 to 0 °F | Jun 1 | Sep 10 | 102 |
| Glenns Ferry | 7a 0 to 5 °F | May 1 | Oct 3 | 154 |
| Gooding | 6b −5 to 0 °F | Apr 24 | Oct 16 | 173 |
| Grace | 5b −15 to −10 °F | May 29 | Sep 17 | 111 |
| Grace | 6a −10 to −5 °F | Jun 17 | Sep 3 | 77 |
| Grand View | 7a 0 to 5 °F | Apr 28 | Oct 6 | 162 |
| Grangeville | 6b −5 to 0 °F | May 9 | Oct 3 | 146 |
| Hailey | 6a −10 to −5 °F | May 13 | Oct 2 | 139 |
| Hazelton | 6b −5 to 0 °F | May 7 | Oct 5 | 149 |
| Homedale | 7a 0 to 5 °F | Apr 24 | Oct 9 | 169 |
| Homedale | 7a 0 to 5 °F | May 7 | Oct 5 | 150 |
| Idaho | 6b −5 to 0 °F | Jun 17 | Sep 5 | 80 |
| Idaho Falls | 5b −15 to −10 °F | May 23 | Sep 20 | 114 |
| Irwin | 6a −10 to −5 °F | Jun 14 | Sep 11 | 85 |
| Island Park | 4a −30 to −25 °F | Jun 15 | Sep 10 | 87 |
| Jerome | 6b −5 to 0 °F | May 1 | Oct 14 | 165 |
| Kamiah | 7a 0 to 5 °F | May 24 | Sep 20 | 116 |
| Kellogg | 6b −5 to 0 °F | May 14 | Sep 26 | 131 |
| Kimberly | 6b −5 to 0 °F | May 9 | Oct 4 | 147 |
| Kootenai | 6a −10 to −5 °F | May 8 | Sep 28 | 141 |
| Laclede | 6b −5 to 0 °F | May 20 | Sep 13 | 114 |
| Lava Hot Springs | 6b −5 to 0 °F | May 23 | Sep 24 | 121 |
| Leadore | 5a −20 to −15 °F | Jun 12 | Sep 6 | 85 |
| Lewisville | 5a −20 to −15 °F | May 23 | Sep 20 | 114 |
| Mackay | 5a −20 to −15 °F | Jun 14 | Sep 8 | 86 |
| Malad | 6a −10 to −5 °F | May 22 | Sep 20 | 116 |
| Malta | 6a −10 to −5 °F | Jun 1 | Sep 19 | 111 |
| McCammon | 5b −15 to −10 °F | May 23 | Sep 24 | 121 |
| Meridian | 7a 0 to 5 °F | Apr 29 | Oct 13 | 164 |
| Midvale | 6a −10 to −5 °F | May 15 | Sep 27 | 134 |
| Montpelier | 5b −15 to −10 °F | Jun 17 | Sep 3 | 77 |
| Moore | 5a −20 to −15 °F | May 24 | Sep 14 | 113 |
| Moore | 5a −20 to −15 °F | May 22 | Sep 22 | 119 |
| Moreland | 5b −15 to −10 °F | May 5 | Oct 3 | 149 |
| Moscow | 6b −5 to 0 °F | Apr 29 | Oct 2 | 159 |
| Mountain Home | 6b −5 to 0 °F | May 2 | Oct 8 | 157 |
| Mountain Home AFB | 7a 0 to 5 °F | May 2 | Oct 8 | 157 |
| Mud Lake | 4b −25 to −20 °F | Jun 12 | Sep 7 | 87 |
| Mud Lake | 4b −25 to −20 °F | Jun 3 | Sep 11 | 98 |
| Mullan | 6a −10 to −5 °F | Jun 10 | Sep 23 | 104 |
| Mullan | 6a −10 to −5 °F | May 5 | Oct 2 | 149 |
| New Plymouth | 7a 0 to 5 °F | Apr 19 | Oct 20 | 183 |
| New Plymouth | 6b −5 to 0 °F | Apr 19 | Oct 20 | 183 |
| Oakley | 6a −10 to −5 °F | May 15 | Oct 2 | 137 |
| Oakley | 6b −5 to 0 °F | May 15 | Oct 2 | 137 |
| Orofino | 7a 0 to 5 °F | Apr 20 | Oct 20 | 182 |
| Osburn | 6b −5 to 0 °F | May 5 | Oct 2 | 149 |
| Oxford | 6b −5 to 0 °F | May 16 | Sep 28 | 133 |
| Oxford | 5b −15 to −10 °F | May 16 | Sep 28 | 133 |
| Parker | 5a −20 to −15 °F | May 17 | Sep 22 | 126 |
| Parma | 7a 0 to 5 °F | Apr 27 | Oct 9 | 165 |
| Paul | 6a −10 to −5 °F | May 6 | Oct 6 | 151 |
| Pierce | 6a −10 to −5 °F | Jun 3 | Sep 7 | 93 |
| Plummer | 6b −5 to 0 °F | May 11 | Oct 5 | 143 |
| Pocatello | 6a −10 to −5 °F | May 23 | Sep 18 | 117 |
| Pocatello | 6a −10 to −5 °F | May 16 | Oct 2 | 137 |
| Post Falls | 6b −5 to 0 °F | Apr 22 | Oct 18 | 179 |
| Preston | 6a −10 to −5 °F | May 16 | Sep 28 | 133 |
| Rexburg | 5a −20 to −15 °F | May 12 | Sep 24 | 132 |
| Richfield | 6a −10 to −5 °F | May 24 | Sep 26 | 123 |
| Riggins | 7a 0 to 5 °F | May 6 | Oct 9 | 155 |
| Riggins | 6b −5 to 0 °F | May 6 | Oct 9 | 155 |
| Riggins | 6a −10 to −5 °F | May 6 | Oct 9 | 155 |
| Roberts | 5a −20 to −15 °F | Jun 3 | Sep 11 | 98 |
| Rockford | 5b −15 to −10 °F | May 21 | Sep 20 | 118 |
| Rockford | 4b −25 to −20 °F | Jun 11 | Sep 6 | 89 |
| Rockland | 6a −10 to −5 °F | May 20 | Sep 26 | 125 |
| Rockland | 6a −10 to −5 °F | May 23 | Sep 24 | 121 |
| Salmon | 6a −10 to −5 °F | May 17 | Sep 24 | 127 |
| Salmon | 5b −15 to −10 °F | May 17 | Sep 24 | 127 |
| Shoshone | 6a −10 to −5 °F | Apr 24 | Oct 16 | 173 |
| Smiths Ferry | 7a 0 to 5 °F | May 31 | Sep 16 | 108 |
| Soda Springs | 5a −20 to −15 °F | May 29 | Sep 17 | 111 |
| Spencer | 5b −15 to −10 °F | May 18 | Sep 30 | 132 |
| Spirit Lake | 6b −5 to 0 °F | May 22 | Sep 22 | 122 |
| Stanley | 6a −10 to −5 °F | Jun 6 | Sep 4 | 87 |
| Stanley | 6b −5 to 0 °F | Jun 6 | Sep 4 | 87 |
| Stites | 7a 0 to 5 °F | May 9 | Oct 3 | 146 |
| Sugar | 5a −20 to −15 °F | May 15 | Sep 23 | 129 |
| Sun Valley | 5b −15 to −10 °F | May 13 | Oct 2 | 139 |
| Swan Valley | 5b −15 to −10 °F | Jun 9 | Sep 11 | 93 |
| Swan Valley | 6a −10 to −5 °F | Jun 9 | Sep 11 | 93 |
| Sweetwater | 7b 5 to 10 °F | May 23 | Sep 25 | 121 |
| Tetonia | 5a −20 to −15 °F | Jun 15 | Sep 7 | 85 |
| Tyhee | 6a −10 to −5 °F | May 20 | Sep 20 | 119 |
| Ucon | 5a −20 to −15 °F | May 9 | Oct 1 | 142 |
| Viola | 6b −5 to 0 °F | May 15 | Sep 21 | 126 |
| Weippe | 6b −5 to 0 °F | Jun 3 | Sep 7 | 93 |
| Weiser | 7a 0 to 5 °F | May 15 | Sep 27 | 134 |
| Wendell | 6b −5 to 0 °F | May 2 | Oct 14 | 166 |
| White Bird | 6b −5 to 0 °F | Jun 8 | Sep 5 | 84 |
| Yellow Pine | 5a −20 to −15 °F | May 2 | Oct 10 | 159 |
| Yellow Pine | 5a −20 to −15 °F | Jun 10 | Sep 10 | 93 |
| Yellow Pine | 5a −20 to −15 °F | Jun 12 | Sep 11 | 88 |
Data: NOAA NCEI U.S. Climate Normals 1991–2020 (public domain) and USDA Plant Hardiness Zone Map 2023. Planting windows synthesized from U.S. Cooperative Extension guides.
More ways to explore
Browse by USDA hardiness zone, see when to plant common crops, or read the methodology behind every figure. This site lists 134 Idaho locations, mapping every ZIP in the state to its nearest weather station with a full 30-year record.