Kimberly, ID frost dates
Last spring frostMay 6median date
First fall frostOct 3median date
Growing season150 daysfrost-free
Hardiness zone6bZone 6b
How Kimberly compares
- In 8 years out of 10, the last spring frost in Kimberly falls between April 22 and May 26, a 34-day window. The first fall frost falls between September 16 and October 18.
- The median last frost is 8 days earlier than the Idaho median of May 14.
- Its 150-day growing season is longer than 65% of the 244 Idaho places with a regular frost season (state median 138 days).
- The last frost is 14 days later than the zone 6b median of Apr 22. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 6b chart.
- The weather station records an average of 156 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 22 |
| 50% (median) | May 6 |
| 10% (safe for tender plants) | May 26 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 16 |
| 50% (median) | October 3 |
| 90% (late) | October 18 |
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 Kimberly, ID
Kimberly, ID frost dates — last frost May 6, first frost Oct 3, zone 6b. whenisthelastfrost.com
Crop
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Start indoors: Feb 11 to Feb 25Transplant outside: Apr 8 to Apr 22
Start indoors: Feb 25 to Mar 11Transplant outside: May 20 to Jun 3
Start indoors: Feb 25 to Mar 11Transplant outside: May 20 to Jun 3
Start indoors: Mar 11 to Mar 25Transplant outside: May 13 to May 27
Start indoors: Mar 11 to Mar 25Transplant outside: Apr 15 to Apr 29Sow outdoors: Apr 8 to May 13Plant for fall: Aug 8 to Sep 5
Start indoors: Mar 11 to Mar 25Transplant outside: Apr 8 to Apr 22Sow outdoors: Apr 8 to Apr 22Plant for fall: Jul 25 to Aug 15
Start indoors: Mar 11 to Mar 25Transplant outside: Apr 22 to May 6Plant for fall: Jun 27 to Jul 18
Start indoors: Mar 11 to Mar 25Transplant outside: Apr 15 to Apr 29Plant for fall: Jun 27 to Jul 18
Start indoors: Mar 11 to Mar 25Transplant outside: Apr 22 to May 6Plant for fall: Jun 27 to Jul 18
Start indoors: Mar 25 to Apr 8Transplant outside: May 27 to Jun 10Sow outdoors: May 27 to Jun 10
Start indoors: Mar 25 to Apr 8Transplant outside: May 13 to May 27
Sow outdoors: Mar 25 to Apr 15Plant for fall: Jul 11 to Aug 1
Sow outdoors: Mar 25 to Apr 15Plant for fall: Aug 8 to Aug 29
Sow outdoors: Apr 1 to May 13Plant for fall: Aug 22 to Sep 12
Start indoors: Apr 8 to Apr 15Transplant outside: May 20 to May 27Sow outdoors: May 13 to May 27Plant for fall: Jul 18 to Aug 1
Start indoors: Apr 8 to Apr 15Sow outdoors: May 13 to May 27Plant for fall: Jul 25 to Aug 8
Start indoors: Apr 8 to Apr 15Sow outdoors: May 13 to May 27
Start indoors: Apr 8 to Apr 15Transplant outside: May 20 to Jun 3
Sow outdoors: Apr 15 to May 13Plant for fall: Jul 11 to Jul 25
Sow outdoors: Apr 15 to May 13Plant for fall: Jul 25 to Aug 8
Sow outdoors: Apr 15 to May 6
Sow outdoors: Apr 22 to May 20Plant for fall: Jul 25 to Aug 8
Sow outdoors: Apr 22 to May 13Plant for fall: Aug 8 to Aug 29
Sow outdoors: May 13 to Jun 3Plant for fall: Jul 18 to Aug 1
Sow outdoors: May 13 to May 27
Transplant outside: May 20 to Jun 10
Plant for fall: Sep 19 to Oct 24
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Kimberly, ID
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 11 – Feb 25 | Apr 8 – Apr 22 | — | — |
| Peppers | Feb 25 – Mar 11 | May 20 – Jun 3 | — | — |
| Eggplant | Feb 25 – Mar 11 | May 20 – Jun 3 | — | — |
| Tomatoes | Mar 11 – Mar 25 | May 13 – May 27 | — | — |
| Lettuce | Mar 11 – Mar 25 | Apr 15 – Apr 29 | Apr 8 – May 13 | Aug 8 – Sep 5 |
| Kale | Mar 11 – Mar 25 | Apr 8 – Apr 22 | Apr 8 – Apr 22 | Jul 25 – Aug 15 |
| Broccoli | Mar 11 – Mar 25 | Apr 22 – May 6 | — | Jun 27 – Jul 18 |
| Cabbage | Mar 11 – Mar 25 | Apr 15 – Apr 29 | — | Jun 27 – Jul 18 |
| Cauliflower | Mar 11 – Mar 25 | Apr 22 – May 6 | — | Jun 27 – Jul 18 |
| Okra | Mar 25 – Apr 8 | May 27 – Jun 10 | May 27 – Jun 10 | — |
| Basil | Mar 25 – Apr 8 | May 13 – May 27 | — | — |
| Peas | — | — | Mar 25 – Apr 15 | Jul 11 – Aug 1 |
| Spinach | — | — | Mar 25 – Apr 15 | Aug 8 – Aug 29 |
| Radishes | — | — | Apr 1 – May 13 | Aug 22 – Sep 12 |
| Cucumbers | Apr 8 – Apr 15 | May 20 – May 27 | May 13 – May 27 | Jul 18 – Aug 1 |
| Zucchini & Summer Squash | Apr 8 – Apr 15 | — | May 13 – May 27 | Jul 25 – Aug 8 |
| Winter Squash & Pumpkins | Apr 8 – Apr 15 | — | May 13 – May 27 | — |
| Melons & Watermelon | Apr 8 – Apr 15 | May 20 – Jun 3 | — | — |
| Carrots | — | — | Apr 15 – May 13 | Jul 11 – Jul 25 |
| Beets | — | — | Apr 15 – May 13 | Jul 25 – Aug 8 |
| Potatoes | — | — | Apr 15 – May 6 | — |
| Swiss Chard | — | — | Apr 22 – May 20 | Jul 25 – Aug 8 |
| Cilantro | — | — | Apr 22 – May 13 | Aug 8 – Aug 29 |
| Green Beans | — | — | May 13 – Jun 3 | Jul 18 – Aug 1 |
| Sweet Corn | — | — | May 13 – May 27 | — |
| Sweet Potatoes | — | May 20 – Jun 10 | — | — |
| Garlic | — | — | — | Sep 19 – Oct 24 |
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 Twin Falls 6 E, ID weather station, 2 km away (elevation 3,960 ft (1,207 m)).
Frost dates near Kimberly
- Hansen May 6 · Oct 3
- Twin Falls Apr 30 · Oct 9
- Eden May 7 · Oct 5
- Murtaugh May 7 · Oct 5
- Hazelton May 7 · Oct 5
- Filer Apr 25 · Oct 15
- Jerome May 2 · Oct 14
- Buhl Apr 25 · Oct 15
- Wendell May 2 · Oct 14
- Rogerson frost any month
Frequently asked questions
When is the last frost in Kimberly, ID?
The median last spring frost in Kimberly, ID is May 6. There is still about a 10% chance of frost after May 26, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Kimberly, ID?
The median first fall frost is October 3, with about a 10% chance of frost before September 16.
How long is the growing season in Kimberly, ID?
About 150 days between the median last spring frost and first fall frost.
What planting zone is Kimberly, ID?
Kimberly, ID is in USDA hardiness zone 6b.