Murray, ID frost dates
Last spring frostMay 31median date
First fall frostSep 5median date
Growing season97 daysfrost-free
Hardiness zone6aZone 6a
How Murray compares
- In 8 years out of 10, the last spring frost in Murray falls between May 16 and June 23, a 38-day window. The first fall frost falls between August 20 and September 21.
- The median last frost is 17 days later than the Idaho median of May 14.
- Its 97-day growing season is longer than 10% of the 244 Idaho places with a regular frost season (state median 138 days).
- The last frost is 32 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 197 nights a year at or below 32°F.
- Compared with Spokane, WA, 115 km away, the last frost here is 35 days later than there and the growing season is 75 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | May 16 |
| 50% (median) | May 31 |
| 10% (safe for tender plants) | June 23 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | August 20 |
| 50% (median) | September 5 |
| 90% (late) | September 21 |
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 Murray, ID
Murray, ID frost dates — last frost May 31, first frost Sep 5, zone 6a. 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 11 to Aug 8
Start indoors: Apr 5 to Apr 19Transplant outside: May 3 to May 17Sow outdoors: May 3 to May 17Plant for fall: Jun 27 to Jul 18
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 10
Sow outdoors: Apr 19 to May 10Plant for fall: Jul 11 to Aug 1
Sow outdoors: Apr 26 to Jun 7Plant for fall: Jul 25 to Aug 15
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 21
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 7
Sow outdoors: May 10 to Jun 7Plant for fall: Jun 27 to Jul 11
Sow outdoors: May 10 to May 31
Sow outdoors: May 17 to Jun 14
Sow outdoors: May 17 to Jun 7Plant for fall: Jul 11 to Aug 1
Sow outdoors: Jun 7 to Jun 28
Sow outdoors: Jun 7 to Jun 21
Transplant outside: Jun 14 to Jul 5
Plant for fall: Aug 22 to Sep 26
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Murray, 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 11 – Aug 8 |
| Kale | Apr 5 – Apr 19 | May 3 – May 17 | May 3 – May 17 | Jun 27 – Jul 18 |
| 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 | — |
| Spinach | — | — | Apr 19 – May 10 | Jul 11 – Aug 1 |
| Radishes | — | — | Apr 26 – Jun 7 | Jul 25 – Aug 15 |
| Cucumbers | May 3 – May 10 | Jun 14 – Jun 21 | Jun 7 – Jun 21 | — |
| Zucchini & Summer Squash | May 3 – May 10 | — | Jun 7 – Jun 21 | — |
| Winter Squash & Pumpkins Warning: Your frost-free season is about 97 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 Warning: Your frost-free season is about 97 days, which is tight for melons & watermelon (85+ days). Choose early varieties and use transplants or row covers. | May 3 – May 10 | Jun 14 – Jun 28 | — | — |
| Carrots | — | — | May 10 – Jun 7 | — |
| Beets | — | — | May 10 – Jun 7 | Jun 27 – Jul 11 |
| Potatoes | — | — | May 10 – May 31 | — |
| Swiss Chard | — | — | May 17 – Jun 14 | — |
| Cilantro | — | — | May 17 – Jun 7 | Jul 11 – Aug 1 |
| Green Beans | — | — | Jun 7 – Jun 28 | — |
| Sweet Corn | — | — | Jun 7 – Jun 21 | — |
| Sweet Potatoes Warning: Your frost-free season is about 97 days, which is tight for sweet potatoes (100+ days). Choose early varieties and use transplants or row covers. | — | Jun 14 – Jul 5 | — | — |
| Garlic | — | — | — | Aug 22 – Sep 26 |
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 Prichard 3 Ese, ID weather station, 5 km away (elevation 2,546 ft (776 m)).
Frost dates near Murray
- Silverton May 5 · Oct 2
- Osburn May 14 · Sep 26
- Wallace May 5 · Oct 2
- Mullan May 12 · Sep 30
- Kellogg May 14 · Sep 26
- Smelterville May 14 · Sep 26
- Kingston May 14 · Sep 26
- Pinehurst May 14 · Sep 26
- Calder May 5 · Oct 2
- Avery May 12 · Sep 30
Frequently asked questions
When is the last frost in Murray, ID?
The median last spring frost in Murray, ID is May 31. There is still about a 10% chance of frost after June 23, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Murray, ID?
The median first fall frost is September 5, with about a 10% chance of frost before August 20.
How long is the growing season in Murray, ID?
About 97 days between the median last spring frost and first fall frost.
What planting zone is Murray, ID?
Murray, ID is in USDA hardiness zone 6a.