Felt, ID frost dates
Last spring frostJun 15median date
First fall frostSep 7median date
Growing season84 daysfrost-free
Hardiness zone5aZone 5a
How Felt compares
- In 8 years out of 10, the last spring frost in Felt falls between May 24 and June 29, a 36-day window. The first fall frost falls between August 24 and September 23.
- The median last frost is 32 days later than the Idaho median of May 14.
- Its 84-day growing season is longer than 3% of the 244 Idaho places with a regular frost season (state median 138 days).
- The last frost is 43 days later than the zone 5a median of May 3. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 5a chart.
- The weather station records an average of 218 nights a year at or below 32°F.
- Compared with Idaho Falls, ID, 78 km away, the last frost here is 37 days later than there and the growing season is 61 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | May 24 |
| 50% (median) | June 15 |
| 10% (safe for tender plants) | June 29 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | August 24 |
| 50% (median) | September 7 |
| 90% (late) | September 23 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Planting calendar for Felt, ID
Felt, ID frost dates — last frost Jun 15, first frost Sep 7, zone 5a. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Mar 23 to Apr 6Transplant outside: May 18 to Jun 1
Start indoors: Apr 6 to Apr 20Transplant outside: Jun 29 to Jul 13
Start indoors: Apr 6 to Apr 20Transplant outside: Jun 29 to Jul 13
Start indoors: Apr 20 to May 4Transplant outside: Jun 22 to Jul 6
Start indoors: Apr 20 to May 4Transplant outside: May 25 to Jun 8Sow outdoors: May 18 to Jun 22Plant for fall: Jul 13 to Aug 10
Start indoors: Apr 20 to May 4Transplant outside: May 18 to Jun 1Sow outdoors: May 18 to Jun 1
Start indoors: Apr 20 to May 4Transplant outside: Jun 1 to Jun 15
Start indoors: Apr 20 to May 4Transplant outside: May 25 to Jun 8
Start indoors: Apr 20 to May 4Transplant outside: Jun 1 to Jun 15
Start indoors: May 4 to May 18Transplant outside: Jul 6 to Jul 20Sow outdoors: Jul 6 to Jul 20
Start indoors: May 4 to May 18Transplant outside: Jun 22 to Jul 6
Sow outdoors: May 4 to May 25
Sow outdoors: May 4 to May 25Plant for fall: Jul 13 to Aug 3
Sow outdoors: May 11 to Jun 22Plant for fall: Jul 27 to Aug 17
Start indoors: May 18 to May 25Transplant outside: Jun 29 to Jul 6Sow outdoors: Jun 22 to Jul 6
Start indoors: May 18 to May 25Sow outdoors: Jun 22 to Jul 6
Start indoors: May 18 to May 25Sow outdoors: Jun 22 to Jul 6
Start indoors: May 18 to May 25Transplant outside: Jun 29 to Jul 13
Sow outdoors: May 25 to Jun 22
Sow outdoors: May 25 to Jun 22
Sow outdoors: May 25 to Jun 15
Sow outdoors: Jun 1 to Jun 29
Sow outdoors: Jun 1 to Jun 22Plant for fall: Jul 13 to Aug 3
Sow outdoors: Jun 22 to Jul 13
Sow outdoors: Jun 22 to Jul 6
Transplant outside: Jun 29 to Jul 20
Plant for fall: Aug 24 to Sep 28
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Felt, ID
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Mar 23 – Apr 6 | May 18 – Jun 1 | — | — |
| Peppers Warning: Your frost-free season is about 84 days, which is tight for peppers (75+ days). Choose early varieties and use transplants or row covers. | Apr 6 – Apr 20 | Jun 29 – Jul 13 | — | — |
| Eggplant Warning: Your frost-free season is about 84 days, which is tight for eggplant (75+ days). Choose early varieties and use transplants or row covers. | Apr 6 – Apr 20 | Jun 29 – Jul 13 | — | — |
| Tomatoes | Apr 20 – May 4 | Jun 22 – Jul 6 | — | — |
| Lettuce | Apr 20 – May 4 | May 25 – Jun 8 | May 18 – Jun 22 | Jul 13 – Aug 10 |
| Kale | Apr 20 – May 4 | May 18 – Jun 1 | May 18 – Jun 1 | — |
| Broccoli | Apr 20 – May 4 | Jun 1 – Jun 15 | — | — |
| Cabbage | Apr 20 – May 4 | May 25 – Jun 8 | — | — |
| Cauliflower | Apr 20 – May 4 | Jun 1 – Jun 15 | — | — |
| Okra | May 4 – May 18 | Jul 6 – Jul 20 | Jul 6 – Jul 20 | — |
| Basil | May 4 – May 18 | Jun 22 – Jul 6 | — | — |
| Peas | — | — | May 4 – May 25 | — |
| Spinach | — | — | May 4 – May 25 | Jul 13 – Aug 3 |
| Radishes | — | — | May 11 – Jun 22 | Jul 27 – Aug 17 |
| Cucumbers | May 18 – May 25 | Jun 29 – Jul 6 | Jun 22 – Jul 6 | — |
| Zucchini & Summer Squash | May 18 – May 25 | — | Jun 22 – Jul 6 | — |
| Winter Squash & Pumpkins Warning: Your frost-free season is about 84 days, which is tight for winter squash & pumpkins (100+ days). Choose early varieties and use transplants or row covers. | May 18 – May 25 | — | Jun 22 – Jul 6 | — |
| Melons & Watermelon Warning: Your frost-free season is about 84 days, which is tight for melons & watermelon (85+ days). Choose early varieties and use transplants or row covers. | May 18 – May 25 | Jun 29 – Jul 13 | — | — |
| Carrots | — | — | May 25 – Jun 22 | — |
| Beets | — | — | May 25 – Jun 22 | — |
| Potatoes | — | — | May 25 – Jun 15 | — |
| Swiss Chard | — | — | Jun 1 – Jun 29 | — |
| Cilantro | — | — | Jun 1 – Jun 22 | Jul 13 – Aug 3 |
| Green Beans | — | — | Jun 22 – Jul 13 | — |
| Sweet Corn Warning: Your frost-free season is about 84 days, which is tight for sweet corn (80+ days). Choose early varieties and use transplants or row covers. | — | — | Jun 22 – Jul 6 | — |
| Sweet Potatoes Warning: Your frost-free season is about 84 days, which is tight for sweet potatoes (100+ days). Choose early varieties and use transplants or row covers. | — | Jun 29 – Jul 20 | — | — |
| Garlic | — | — | — | Aug 24 – Sep 28 |
Dates come from the median frost dates and common extension-service timing. Adjust for your soil temperature, microclimate and the varieties you grow.
About these dates
Based on 1991–2020 NOAA climate normals for the Tetonia Exp Stn, ID weather station, 7 km away (elevation 6,171 ft (1,881 m)).
Frost dates near Felt
- Tetonia Jun 13 · Sep 9
- Driggs Jun 13 · Sep 9
- Ashton May 21 · Sep 21
- Victor Jun 13 · Sep 9
- Chester May 21 · Sep 21
- Newdale May 17 · Sep 22
- Teton May 29 · Sep 13
- Sugar City May 29 · Sep 13
- Saint Anthony May 17 · Sep 22
- Rexburg May 12 · Sep 24
Frequently asked questions
When is the last frost in Felt, ID?
The median last spring frost in Felt, ID is June 15. There is still about a 10% chance of frost after June 29, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Felt, ID?
The median first fall frost is September 7, with about a 10% chance of frost before August 24.
How long is the growing season in Felt, ID?
About 84 days between the median last spring frost and first fall frost.
What planting zone is Felt, ID?
Felt, ID is in USDA hardiness zone 5a.