Frost dates for 97527 — Grants Pass, OR
Last spring frostApr 8median date
First fall frostOct 28median date
Growing season203 daysfrost-free
Hardiness zone8bZone 8b
How Grants Pass compares
- In 8 years out of 10, the last spring frost in Grants Pass falls between March 15 and May 1, a 47-day window. The first fall frost falls between October 8 and November 24.
- The median last frost is 8 days earlier than the Oregon median of Apr 16.
- Its 203-day growing season is longer than 57% of the 345 Oregon places with a regular frost season (state median 193 days).
- The last frost is 23 days later than the zone 8b median of Mar 16. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 8b chart.
- The weather station records an average of 65 nights a year at or below 32°F.
- Compared with Medford, OR, 41 km away, the last frost here is the same as there and the growing season is 1 day shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | March 15 |
| 50% (median) | April 8 |
| 10% (safe for tender plants) | May 1 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 8 |
| 50% (median) | October 28 |
| 90% (late) | November 24 |
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 Grants Pass, OR
Frost dates for 97527 — Grants Pass, OR — last frost Apr 8, first frost Oct 28, zone 8b. whenisthelastfrost.com
Crop
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Start indoors: Jan 14 to Jan 28Transplant outside: Mar 11 to Mar 25
Start indoors: Jan 28 to Feb 11Transplant outside: Apr 22 to May 6
Start indoors: Jan 28 to Feb 11Transplant outside: Apr 22 to May 6
Start indoors: Feb 11 to Feb 25Transplant outside: Apr 15 to Apr 29
Start indoors: Feb 11 to Feb 25Transplant outside: Mar 18 to Apr 1Sow outdoors: Mar 11 to Apr 15Plant for fall: Sep 2 to Sep 30
Start indoors: Feb 11 to Feb 25Transplant outside: Mar 11 to Mar 25Sow outdoors: Mar 11 to Mar 25Plant for fall: Aug 19 to Sep 9
Start indoors: Feb 11 to Feb 25Transplant outside: Mar 25 to Apr 8Plant for fall: Jul 22 to Aug 12
Start indoors: Feb 11 to Feb 25Transplant outside: Mar 18 to Apr 1Plant for fall: Jul 22 to Aug 12
Start indoors: Feb 11 to Feb 25Transplant outside: Mar 25 to Apr 8Plant for fall: Jul 22 to Aug 12
Start indoors: Feb 25 to Mar 11Transplant outside: Apr 29 to May 13Sow outdoors: Apr 29 to May 13
Start indoors: Feb 25 to Mar 11Transplant outside: Apr 15 to Apr 29
Sow outdoors: Feb 25 to Mar 18Plant for fall: Aug 5 to Aug 26
Sow outdoors: Feb 25 to Mar 18Plant for fall: Sep 2 to Sep 23
Sow outdoors: Mar 4 to Apr 15Plant for fall: Sep 16 to Oct 7
Start indoors: Mar 11 to Mar 18Transplant outside: Apr 22 to Apr 29Sow outdoors: Apr 15 to Apr 29Plant for fall: Aug 12 to Aug 26
Start indoors: Mar 11 to Mar 18Sow outdoors: Apr 15 to Apr 29Plant for fall: Aug 19 to Sep 2
Start indoors: Mar 11 to Mar 18Sow outdoors: Apr 15 to Apr 29
Start indoors: Mar 11 to Mar 18Transplant outside: Apr 22 to May 6
Sow outdoors: Mar 18 to Apr 15Plant for fall: Aug 5 to Aug 19
Sow outdoors: Mar 18 to Apr 15Plant for fall: Aug 19 to Sep 2
Sow outdoors: Mar 18 to Apr 8
Sow outdoors: Mar 25 to Apr 22Plant for fall: Aug 19 to Sep 2
Sow outdoors: Mar 25 to Apr 15Plant for fall: Sep 2 to Sep 23
Sow outdoors: Apr 15 to May 6Plant for fall: Aug 12 to Aug 26
Sow outdoors: Apr 15 to Apr 29
Transplant outside: Apr 22 to May 13
Plant for fall: Oct 14 to Nov 18
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Grants Pass, OR
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 14 – Jan 28 | Mar 11 – Mar 25 | — | — |
| Peppers | Jan 28 – Feb 11 | Apr 22 – May 6 | — | — |
| Eggplant | Jan 28 – Feb 11 | Apr 22 – May 6 | — | — |
| Tomatoes | Feb 11 – Feb 25 | Apr 15 – Apr 29 | — | — |
| Lettuce | Feb 11 – Feb 25 | Mar 18 – Apr 1 | Mar 11 – Apr 15 | Sep 2 – Sep 30 |
| Kale | Feb 11 – Feb 25 | Mar 11 – Mar 25 | Mar 11 – Mar 25 | Aug 19 – Sep 9 |
| Broccoli | Feb 11 – Feb 25 | Mar 25 – Apr 8 | — | Jul 22 – Aug 12 |
| Cabbage | Feb 11 – Feb 25 | Mar 18 – Apr 1 | — | Jul 22 – Aug 12 |
| Cauliflower | Feb 11 – Feb 25 | Mar 25 – Apr 8 | — | Jul 22 – Aug 12 |
| Okra | Feb 25 – Mar 11 | Apr 29 – May 13 | Apr 29 – May 13 | — |
| Basil | Feb 25 – Mar 11 | Apr 15 – Apr 29 | — | — |
| Peas | — | — | Feb 25 – Mar 18 | Aug 5 – Aug 26 |
| Spinach | — | — | Feb 25 – Mar 18 | Sep 2 – Sep 23 |
| Radishes | — | — | Mar 4 – Apr 15 | Sep 16 – Oct 7 |
| Cucumbers | Mar 11 – Mar 18 | Apr 22 – Apr 29 | Apr 15 – Apr 29 | Aug 12 – Aug 26 |
| Zucchini & Summer Squash | Mar 11 – Mar 18 | — | Apr 15 – Apr 29 | Aug 19 – Sep 2 |
| Winter Squash & Pumpkins | Mar 11 – Mar 18 | — | Apr 15 – Apr 29 | — |
| Melons & Watermelon | Mar 11 – Mar 18 | Apr 22 – May 6 | — | — |
| Carrots | — | — | Mar 18 – Apr 15 | Aug 5 – Aug 19 |
| Beets | — | — | Mar 18 – Apr 15 | Aug 19 – Sep 2 |
| Potatoes | — | — | Mar 18 – Apr 8 | — |
| Swiss Chard | — | — | Mar 25 – Apr 22 | Aug 19 – Sep 2 |
| Cilantro | — | — | Mar 25 – Apr 15 | Sep 2 – Sep 23 |
| Green Beans | — | — | Apr 15 – May 6 | Aug 12 – Aug 26 |
| Sweet Corn | — | — | Apr 15 – Apr 29 | — |
| Sweet Potatoes | — | Apr 22 – May 13 | — | — |
| Garlic | — | — | — | Oct 14 – Nov 18 |
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 Grants Pass, OR weather station, 4 km away (elevation 932 ft (284 m)).
ZIP codes in Grants Pass: 97526 97527 97528
Frost dates near Grants Pass
- Murphy Apr 8 · Oct 28
- Merlin May 16 · Oct 30
- Wilderville Apr 8 · Oct 28
- Rogue River Apr 8 · Oct 28
- Williams May 4 · Oct 13
- Selma May 1 · Oct 12
- Gold Hill Apr 8 · Oct 29
- Wolf Creek May 16 · Oct 30
Frequently asked questions
When is the last frost in Grants Pass, OR?
The median last spring frost in Grants Pass, OR is April 8. There is still about a 10% chance of frost after May 1, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Grants Pass, OR?
The median first fall frost is October 28, with about a 10% chance of frost before October 8.
How long is the growing season in Grants Pass, OR?
About 203 days between the median last spring frost and first fall frost.
What planting zone is Grants Pass, OR?
Grants Pass, OR is in USDA hardiness zone 8b.