Almo, ID frost dates
Last spring frostMay 15median date
First fall frostOct 2median date
Growing season140 daysfrost-free
Hardiness zone6aZone 6a
How Almo compares
- In 8 years out of 10, the last spring frost in Almo falls between April 30 and June 6, a 37-day window. The first fall frost falls between September 16 and October 17.
- The median last frost is 1 day later than the Idaho median of May 14.
- Its 140-day growing season is longer than 51% of the 244 Idaho places with a regular frost season (state median 138 days).
- The last frost is 16 days later than the zone 6a median of Apr 29. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 6a chart.
- The weather station records an average of 143 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 30 |
| 50% (median) | May 15 |
| 10% (safe for tender plants) | June 6 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 16 |
| 50% (median) | October 2 |
| 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 Almo, ID
Almo, ID frost dates — last frost May 15, first frost Oct 2, zone 6a. whenisthelastfrost.com
Crop
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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 7 to Sep 4
Start indoors: Mar 20 to Apr 3Transplant outside: Apr 17 to May 1Sow outdoors: Apr 17 to May 1Plant for fall: Jul 24 to Aug 14
Start indoors: Mar 20 to Apr 3Transplant outside: May 1 to May 15Plant for fall: Jun 26 to Jul 17
Start indoors: Mar 20 to Apr 3Transplant outside: Apr 24 to May 8Plant for fall: Jun 26 to Jul 17
Start indoors: Mar 20 to Apr 3Transplant outside: May 1 to May 15Plant for fall: Jun 26 to Jul 17
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 10 to Jul 31
Sow outdoors: Apr 3 to Apr 24Plant for fall: Aug 7 to Aug 28
Sow outdoors: Apr 10 to May 22Plant for fall: Aug 21 to Sep 11
Start indoors: Apr 17 to Apr 24Transplant outside: May 29 to Jun 5Sow outdoors: May 22 to Jun 5Plant for fall: Jul 17 to Jul 31
Start indoors: Apr 17 to Apr 24Sow outdoors: May 22 to Jun 5Plant for fall: Jul 24 to Aug 7
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 10 to Jul 24
Sow outdoors: Apr 24 to May 22Plant for fall: Jul 24 to Aug 7
Sow outdoors: Apr 24 to May 15
Sow outdoors: May 1 to May 29Plant for fall: Jul 24 to Aug 7
Sow outdoors: May 1 to May 22Plant for fall: Aug 7 to Aug 28
Sow outdoors: May 22 to Jun 12Plant for fall: Jul 17 to Jul 31
Sow outdoors: May 22 to Jun 5
Transplant outside: May 29 to Jun 19
Plant for fall: Sep 18 to Oct 23
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Almo, 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 7 – Sep 4 |
| Kale | Mar 20 – Apr 3 | Apr 17 – May 1 | Apr 17 – May 1 | Jul 24 – Aug 14 |
| Broccoli | Mar 20 – Apr 3 | May 1 – May 15 | — | Jun 26 – Jul 17 |
| Cabbage | Mar 20 – Apr 3 | Apr 24 – May 8 | — | Jun 26 – Jul 17 |
| Cauliflower | Mar 20 – Apr 3 | May 1 – May 15 | — | Jun 26 – Jul 17 |
| 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 10 – Jul 31 |
| Spinach | — | — | Apr 3 – Apr 24 | Aug 7 – Aug 28 |
| Radishes | — | — | Apr 10 – May 22 | Aug 21 – Sep 11 |
| Cucumbers | Apr 17 – Apr 24 | May 29 – Jun 5 | May 22 – Jun 5 | Jul 17 – Jul 31 |
| Zucchini & Summer Squash | Apr 17 – Apr 24 | — | May 22 – Jun 5 | Jul 24 – Aug 7 |
| 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 10 – Jul 24 |
| Beets | — | — | Apr 24 – May 22 | Jul 24 – Aug 7 |
| Potatoes | — | — | Apr 24 – May 15 | — |
| Swiss Chard | — | — | May 1 – May 29 | Jul 24 – Aug 7 |
| Cilantro | — | — | May 1 – May 22 | Aug 7 – Aug 28 |
| Green Beans | — | — | May 22 – Jun 12 | Jul 17 – Jul 31 |
| Sweet Corn | — | — | May 22 – Jun 5 | — |
| Sweet Potatoes | — | May 29 – Jun 19 | — | — |
| Garlic | — | — | — | Sep 18 – Oct 23 |
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 Oakley, ID weather station, 28 km away (elevation 4,560 ft (1,390 m)).
Frost dates near Almo
- Oakley May 15 · Oct 2
- Malta Jun 5 · Sep 13
- Albion Jun 5 · Sep 13
- Burley May 7 · Oct 4
- Declo May 16 · Oct 1
- Heyburn May 7 · Oct 4
- Paul May 6 · Oct 6
- Murtaugh May 7 · Oct 5
- Rupert May 16 · Oct 1
- Hazelton May 7 · Oct 5
Frequently asked questions
When is the last frost in Almo, ID?
The median last spring frost in Almo, ID is May 15. There is still about a 10% chance of frost after June 6, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Almo, ID?
The median first fall frost is October 2, with about a 10% chance of frost before September 16.
How long is the growing season in Almo, ID?
About 140 days between the median last spring frost and first fall frost.
What planting zone is Almo, ID?
Almo, ID is in USDA hardiness zone 6a.