Fish Haven, ID frost dates
Last spring frostMay 15median date
First fall frostOct 4median date
Growing season142 daysfrost-free
Hardiness zone5bZone 5b
How Fish Haven compares
- In 8 years out of 10, the last spring frost in Fish Haven falls between April 30 and June 5, a 36-day window. The first fall frost falls between September 22 and October 17.
- The median last frost is 1 day later than the Idaho median of May 14.
- Its 142-day growing season is longer than 52% of the 244 Idaho places with a regular frost season (state median 138 days).
- The last frost is 14 days later than the zone 5b median of May 1. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 5b chart.
- The weather station records an average of 174 nights a year at or below 32°F.
- Compared with Logan, UT, 47 km away, the last frost here is 7 days later than there and the growing season is 5 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 30 |
| 50% (median) | May 15 |
| 10% (safe for tender plants) | June 5 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 22 |
| 50% (median) | October 4 |
| 90% (late) | October 17 |
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 Fish Haven, ID
Fish Haven, ID frost dates — last frost May 15, first frost Oct 4, zone 5b. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Feb 20 to Mar 6Transplant outside: Apr 17 to May 1
Start indoors: Mar 6 to Mar 20Transplant outside: May 29 to Jun 12
Start indoors: Mar 6 to Mar 20Transplant outside: May 29 to Jun 12
Start indoors: Mar 20 to Apr 3Transplant outside: May 22 to Jun 5
Start indoors: Mar 20 to Apr 3Transplant outside: Apr 24 to May 8Sow outdoors: Apr 17 to May 22Plant for fall: Aug 9 to Sep 6
Start indoors: Mar 20 to Apr 3Transplant outside: Apr 17 to May 1Sow outdoors: Apr 17 to May 1Plant for fall: Jul 26 to Aug 16
Start indoors: Mar 20 to Apr 3Transplant outside: May 1 to May 15Plant for fall: Jun 28 to Jul 19
Start indoors: Mar 20 to Apr 3Transplant outside: Apr 24 to May 8Plant for fall: Jun 28 to Jul 19
Start indoors: Mar 20 to Apr 3Transplant outside: May 1 to May 15Plant for fall: Jun 28 to Jul 19
Start indoors: Apr 3 to Apr 17Transplant outside: Jun 5 to Jun 19Sow outdoors: Jun 5 to Jun 19
Start indoors: Apr 3 to Apr 17Transplant outside: May 22 to Jun 5
Sow outdoors: Apr 3 to Apr 24Plant for fall: Jul 12 to Aug 2
Sow outdoors: Apr 3 to Apr 24Plant for fall: Aug 9 to Aug 30
Sow outdoors: Apr 10 to May 22Plant for fall: Aug 23 to Sep 13
Start indoors: Apr 17 to Apr 24Transplant outside: May 29 to Jun 5Sow outdoors: May 22 to Jun 5Plant for fall: Jul 19 to Aug 2
Start indoors: Apr 17 to Apr 24Sow outdoors: May 22 to Jun 5Plant for fall: Jul 26 to Aug 9
Start indoors: Apr 17 to Apr 24Sow outdoors: May 22 to Jun 5
Start indoors: Apr 17 to Apr 24Transplant outside: May 29 to Jun 12
Sow outdoors: Apr 24 to May 22Plant for fall: Jul 12 to Jul 26
Sow outdoors: Apr 24 to May 22Plant for fall: Jul 26 to Aug 9
Sow outdoors: Apr 24 to May 15
Sow outdoors: May 1 to May 29Plant for fall: Jul 26 to Aug 9
Sow outdoors: May 1 to May 22Plant for fall: Aug 9 to Aug 30
Sow outdoors: May 22 to Jun 12Plant for fall: Jul 19 to Aug 2
Sow outdoors: May 22 to Jun 5
Transplant outside: May 29 to Jun 19
Plant for fall: Sep 20 to Oct 25
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Fish Haven, ID
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 20 – Mar 6 | Apr 17 – May 1 | — | — |
| Peppers | Mar 6 – Mar 20 | May 29 – Jun 12 | — | — |
| Eggplant | Mar 6 – Mar 20 | May 29 – Jun 12 | — | — |
| Tomatoes | Mar 20 – Apr 3 | May 22 – Jun 5 | — | — |
| Lettuce | Mar 20 – Apr 3 | Apr 24 – May 8 | Apr 17 – May 22 | Aug 9 – Sep 6 |
| Kale | Mar 20 – Apr 3 | Apr 17 – May 1 | Apr 17 – May 1 | Jul 26 – Aug 16 |
| Broccoli | Mar 20 – Apr 3 | May 1 – May 15 | — | Jun 28 – Jul 19 |
| Cabbage | Mar 20 – Apr 3 | Apr 24 – May 8 | — | Jun 28 – Jul 19 |
| Cauliflower | Mar 20 – Apr 3 | May 1 – May 15 | — | Jun 28 – Jul 19 |
| Okra | Apr 3 – Apr 17 | Jun 5 – Jun 19 | Jun 5 – Jun 19 | — |
| Basil | Apr 3 – Apr 17 | May 22 – Jun 5 | — | — |
| Peas | — | — | Apr 3 – Apr 24 | Jul 12 – Aug 2 |
| Spinach | — | — | Apr 3 – Apr 24 | Aug 9 – Aug 30 |
| Radishes | — | — | Apr 10 – May 22 | Aug 23 – Sep 13 |
| Cucumbers | Apr 17 – Apr 24 | May 29 – Jun 5 | May 22 – Jun 5 | Jul 19 – Aug 2 |
| Zucchini & Summer Squash | Apr 17 – Apr 24 | — | May 22 – Jun 5 | Jul 26 – Aug 9 |
| Winter Squash & Pumpkins | Apr 17 – Apr 24 | — | May 22 – Jun 5 | — |
| Melons & Watermelon | Apr 17 – Apr 24 | May 29 – Jun 12 | — | — |
| Carrots | — | — | Apr 24 – May 22 | Jul 12 – Jul 26 |
| Beets | — | — | Apr 24 – May 22 | Jul 26 – Aug 9 |
| Potatoes | — | — | Apr 24 – May 15 | — |
| Swiss Chard | — | — | May 1 – May 29 | Jul 26 – Aug 9 |
| Cilantro | — | — | May 1 – May 22 | Aug 9 – Aug 30 |
| Green Beans | — | — | May 22 – Jun 12 | Jul 19 – Aug 2 |
| Sweet Corn | — | — | May 22 – Jun 5 | — |
| Sweet Potatoes | — | May 29 – Jun 19 | — | — |
| Garlic | — | — | — | Sep 20 – Oct 25 |
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 Bear Lake Sp, UT weather station, 11 km away (elevation 5,928 ft (1,807 m)).
Frost dates near Fish Haven
- Saint Charles May 19 · Sep 21
- Bloomington May 19 · Sep 21
- Paris Jun 17 · Sep 3
- Dingle May 19 · Sep 21
- Franklin May 16 · Sep 28
- Bern Jun 17 · Sep 3
- Preston May 16 · Sep 28
- Montpelier Jun 17 · Sep 3
- Thatcher May 29 · Sep 17
- Weston May 16 · Sep 28
Frequently asked questions
When is the last frost in Fish Haven, ID?
The median last spring frost in Fish Haven, ID is May 15. There is still about a 10% chance of frost after June 5, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Fish Haven, ID?
The median first fall frost is October 4, with about a 10% chance of frost before September 22.
How long is the growing season in Fish Haven, ID?
About 142 days between the median last spring frost and first fall frost.
What planting zone is Fish Haven, ID?
Fish Haven, ID is in USDA hardiness zone 5b.