Ola, ID frost dates
Last spring frostMay 31median date
First fall frostSep 16median date
Growing season108 daysfrost-free
Hardiness zone7aZone 7a
How Ola compares
- In 8 years out of 10, the last spring frost in Ola falls between May 8 and June 19, a 42-day window. The first fall frost falls between September 2 and September 30.
- The median last frost is 17 days later than the Idaho median of May 14.
- Its 108-day growing season is longer than 15% of the 244 Idaho places with a regular frost season (state median 138 days).
- The last frost is 45 days later than the zone 7a median of Apr 16. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 7a chart.
- The weather station records an average of 178 nights a year at or below 32°F.
- Compared with Meridian, ID, 69 km away, the last frost here is 32 days later than there and the growing season is 59 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | May 8 |
| 50% (median) | May 31 |
| 10% (safe for tender plants) | June 19 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 2 |
| 50% (median) | September 16 |
| 90% (late) | September 30 |
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 Ola, ID
Ola, ID frost dates — last frost May 31, first frost Sep 16, zone 7a. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Mar 8 to Mar 22Transplant outside: May 3 to May 17
Start indoors: Mar 22 to Apr 5Transplant outside: Jun 14 to Jun 28
Start indoors: Mar 22 to Apr 5Transplant outside: Jun 14 to Jun 28
Start indoors: Apr 5 to Apr 19Transplant outside: Jun 7 to Jun 21
Start indoors: Apr 5 to Apr 19Transplant outside: May 10 to May 24Sow outdoors: May 3 to Jun 7Plant for fall: Jul 22 to Aug 19
Start indoors: Apr 5 to Apr 19Transplant outside: May 3 to May 17Sow outdoors: May 3 to May 17Plant for fall: Jul 8 to Jul 29
Start indoors: Apr 5 to Apr 19Transplant outside: May 17 to May 31
Start indoors: Apr 5 to Apr 19Transplant outside: May 10 to May 24
Start indoors: Apr 5 to Apr 19Transplant outside: May 17 to May 31
Start indoors: Apr 19 to May 3Transplant outside: Jun 21 to Jul 5Sow outdoors: Jun 21 to Jul 5
Start indoors: Apr 19 to May 3Transplant outside: Jun 7 to Jun 21
Sow outdoors: Apr 19 to May 10Plant for fall: Jun 24 to Jul 15
Sow outdoors: Apr 19 to May 10Plant for fall: Jul 22 to Aug 12
Sow outdoors: Apr 26 to Jun 7Plant for fall: Aug 5 to Aug 26
Start indoors: May 3 to May 10Transplant outside: Jun 14 to Jun 21Sow outdoors: Jun 7 to Jun 21
Start indoors: May 3 to May 10Sow outdoors: Jun 7 to Jun 21Plant for fall: Jul 8 to Jul 22
Start indoors: May 3 to May 10Sow outdoors: Jun 7 to Jun 21
Start indoors: May 3 to May 10Transplant outside: Jun 14 to Jun 28
Sow outdoors: May 10 to Jun 7Plant for fall: Jun 24 to Jul 8
Sow outdoors: May 10 to Jun 7Plant for fall: Jul 8 to Jul 22
Sow outdoors: May 10 to May 31
Sow outdoors: May 17 to Jun 14Plant for fall: Jul 8 to Jul 22
Sow outdoors: May 17 to Jun 7Plant for fall: Jul 22 to Aug 12
Sow outdoors: Jun 7 to Jun 28
Sow outdoors: Jun 7 to Jun 21
Transplant outside: Jun 14 to Jul 5
Plant for fall: Sep 2 to Oct 7
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Ola, ID
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Mar 8 – Mar 22 | May 3 – May 17 | — | — |
| Peppers | Mar 22 – Apr 5 | Jun 14 – Jun 28 | — | — |
| Eggplant | Mar 22 – Apr 5 | Jun 14 – Jun 28 | — | — |
| Tomatoes | Apr 5 – Apr 19 | Jun 7 – Jun 21 | — | — |
| Lettuce | Apr 5 – Apr 19 | May 10 – May 24 | May 3 – Jun 7 | Jul 22 – Aug 19 |
| Kale | Apr 5 – Apr 19 | May 3 – May 17 | May 3 – May 17 | Jul 8 – Jul 29 |
| Broccoli | Apr 5 – Apr 19 | May 17 – May 31 | — | — |
| Cabbage | Apr 5 – Apr 19 | May 10 – May 24 | — | — |
| Cauliflower | Apr 5 – Apr 19 | May 17 – May 31 | — | — |
| Okra | Apr 19 – May 3 | Jun 21 – Jul 5 | Jun 21 – Jul 5 | — |
| Basil | Apr 19 – May 3 | Jun 7 – Jun 21 | — | — |
| Peas | — | — | Apr 19 – May 10 | Jun 24 – Jul 15 |
| Spinach | — | — | Apr 19 – May 10 | Jul 22 – Aug 12 |
| Radishes | — | — | Apr 26 – Jun 7 | Aug 5 – Aug 26 |
| Cucumbers | May 3 – May 10 | Jun 14 – Jun 21 | Jun 7 – Jun 21 | — |
| Zucchini & Summer Squash | May 3 – May 10 | — | Jun 7 – Jun 21 | Jul 8 – Jul 22 |
| Winter Squash & Pumpkins Warning: Your frost-free season is about 108 days, which is tight for winter squash & pumpkins (100+ days). Choose early varieties and use transplants or row covers. | May 3 – May 10 | — | Jun 7 – Jun 21 | — |
| Melons & Watermelon | May 3 – May 10 | Jun 14 – Jun 28 | — | — |
| Carrots | — | — | May 10 – Jun 7 | Jun 24 – Jul 8 |
| Beets | — | — | May 10 – Jun 7 | Jul 8 – Jul 22 |
| Potatoes | — | — | May 10 – May 31 | — |
| Swiss Chard | — | — | May 17 – Jun 14 | Jul 8 – Jul 22 |
| Cilantro | — | — | May 17 – Jun 7 | Jul 22 – Aug 12 |
| Green Beans | — | — | Jun 7 – Jun 28 | — |
| Sweet Corn | — | — | Jun 7 – Jun 21 | — |
| Sweet Potatoes Warning: Your frost-free season is about 108 days, which is tight for sweet potatoes (100+ days). Choose early varieties and use transplants or row covers. | — | Jun 14 – Jul 5 | — | — |
| Garlic | — | — | — | Sep 2 – Oct 7 |
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 Ola, ID weather station, 7 km away (elevation 3,074 ft (937 m)).
Frost dates near Ola
- Banks Jun 1 · Sep 10
- Sweet Apr 30 · Oct 17
- Horseshoe Bend May 17 · Oct 12
- Indian Valley May 15 · Sep 27
- Placerville Jun 1 · Sep 10
- Garden Valley Jun 1 · Sep 10
- Midvale May 15 · Sep 27
- Emmett Apr 30 · Oct 17
- Mesa May 10 · Oct 2
- Letha Apr 30 · Oct 17
Frequently asked questions
When is the last frost in Ola, ID?
The median last spring frost in Ola, ID is May 31. There is still about a 10% chance of frost after June 19, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Ola, ID?
The median first fall frost is September 16, with about a 10% chance of frost before September 2.
How long is the growing season in Ola, ID?
About 108 days between the median last spring frost and first fall frost.
What planting zone is Ola, ID?
Ola, ID is in USDA hardiness zone 7a.