Granite, OK frost dates
Last spring frostApr 2median date
First fall frostNov 3median date
Growing season215 daysfrost-free
Hardiness zone7bZone 7b
How Granite compares
- In 8 years out of 10, the last spring frost in Granite falls between March 11 and April 21, a 41-day window. The first fall frost falls between October 18 and November 18.
- The median last frost is 2 days earlier than the Oklahoma median of Apr 4.
- Its 215-day growing season is longer than 64% of the 582 Oklahoma places with a regular frost season (state median 211 days).
- The last frost is typical for zone 7b, where the median is Apr 5.
- The weather station records an average of 76 nights a year at or below 32°F.
- Compared with Lawton, OK, 98 km away, the last frost here is 7 days later than there and the growing season is 11 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | March 11 |
| 50% (median) | April 2 |
| 10% (safe for tender plants) | April 21 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 18 |
| 50% (median) | November 3 |
| 90% (late) | November 18 |
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 Granite, OK
Granite, OK frost dates — last frost Apr 2, first frost Nov 3, zone 7b. whenisthelastfrost.com
Crop
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Start indoors: Jan 8 to Jan 22Transplant outside: Mar 5 to Mar 19
Start indoors: Jan 22 to Feb 5Transplant outside: Apr 16 to Apr 30
Start indoors: Jan 22 to Feb 5Transplant outside: Apr 16 to Apr 30
Start indoors: Feb 5 to Feb 19Transplant outside: Apr 9 to Apr 23
Start indoors: Feb 5 to Feb 19Transplant outside: Mar 12 to Mar 26Sow outdoors: Mar 5 to Apr 9Plant for fall: Sep 8 to Oct 6
Start indoors: Feb 5 to Feb 19Transplant outside: Mar 5 to Mar 19Sow outdoors: Mar 5 to Mar 19Plant for fall: Aug 25 to Sep 15
Start indoors: Feb 5 to Feb 19Transplant outside: Mar 19 to Apr 2Plant for fall: Jul 28 to Aug 18
Start indoors: Feb 5 to Feb 19Transplant outside: Mar 12 to Mar 26Plant for fall: Jul 28 to Aug 18
Start indoors: Feb 5 to Feb 19Transplant outside: Mar 19 to Apr 2Plant for fall: Jul 28 to Aug 18
Start indoors: Feb 19 to Mar 5Transplant outside: Apr 23 to May 7Sow outdoors: Apr 23 to May 7
Start indoors: Feb 19 to Mar 5Transplant outside: Apr 9 to Apr 23
Sow outdoors: Feb 19 to Mar 12Plant for fall: Aug 11 to Sep 1
Sow outdoors: Feb 19 to Mar 12Plant for fall: Sep 8 to Sep 29
Sow outdoors: Feb 26 to Apr 9Plant for fall: Sep 22 to Oct 13
Start indoors: Mar 5 to Mar 12Transplant outside: Apr 16 to Apr 23Sow outdoors: Apr 9 to Apr 23Plant for fall: Aug 18 to Sep 1
Start indoors: Mar 5 to Mar 12Sow outdoors: Apr 9 to Apr 23Plant for fall: Aug 25 to Sep 8
Start indoors: Mar 5 to Mar 12Sow outdoors: Apr 9 to Apr 23
Start indoors: Mar 5 to Mar 12Transplant outside: Apr 16 to Apr 30
Sow outdoors: Mar 12 to Apr 9Plant for fall: Aug 11 to Aug 25
Sow outdoors: Mar 12 to Apr 9Plant for fall: Aug 25 to Sep 8
Sow outdoors: Mar 12 to Apr 2
Sow outdoors: Mar 19 to Apr 16Plant for fall: Aug 25 to Sep 8
Sow outdoors: Mar 19 to Apr 9Plant for fall: Sep 8 to Sep 29
Sow outdoors: Apr 9 to Apr 30Plant for fall: Aug 18 to Sep 1
Sow outdoors: Apr 9 to Apr 23
Transplant outside: Apr 16 to May 7
Plant for fall: Oct 20 to Nov 24
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Granite, OK
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 8 – Jan 22 | Mar 5 – Mar 19 | — | — |
| Peppers | Jan 22 – Feb 5 | Apr 16 – Apr 30 | — | — |
| Eggplant | Jan 22 – Feb 5 | Apr 16 – Apr 30 | — | — |
| Tomatoes | Feb 5 – Feb 19 | Apr 9 – Apr 23 | — | — |
| Lettuce | Feb 5 – Feb 19 | Mar 12 – Mar 26 | Mar 5 – Apr 9 | Sep 8 – Oct 6 |
| Kale | Feb 5 – Feb 19 | Mar 5 – Mar 19 | Mar 5 – Mar 19 | Aug 25 – Sep 15 |
| Broccoli | Feb 5 – Feb 19 | Mar 19 – Apr 2 | — | Jul 28 – Aug 18 |
| Cabbage | Feb 5 – Feb 19 | Mar 12 – Mar 26 | — | Jul 28 – Aug 18 |
| Cauliflower | Feb 5 – Feb 19 | Mar 19 – Apr 2 | — | Jul 28 – Aug 18 |
| Okra | Feb 19 – Mar 5 | Apr 23 – May 7 | Apr 23 – May 7 | — |
| Basil | Feb 19 – Mar 5 | Apr 9 – Apr 23 | — | — |
| Peas | — | — | Feb 19 – Mar 12 | Aug 11 – Sep 1 |
| Spinach | — | — | Feb 19 – Mar 12 | Sep 8 – Sep 29 |
| Radishes | — | — | Feb 26 – Apr 9 | Sep 22 – Oct 13 |
| Cucumbers | Mar 5 – Mar 12 | Apr 16 – Apr 23 | Apr 9 – Apr 23 | Aug 18 – Sep 1 |
| Zucchini & Summer Squash | Mar 5 – Mar 12 | — | Apr 9 – Apr 23 | Aug 25 – Sep 8 |
| Winter Squash & Pumpkins | Mar 5 – Mar 12 | — | Apr 9 – Apr 23 | — |
| Melons & Watermelon | Mar 5 – Mar 12 | Apr 16 – Apr 30 | — | — |
| Carrots | — | — | Mar 12 – Apr 9 | Aug 11 – Aug 25 |
| Beets | — | — | Mar 12 – Apr 9 | Aug 25 – Sep 8 |
| Potatoes | — | — | Mar 12 – Apr 2 | — |
| Swiss Chard | — | — | Mar 19 – Apr 16 | Aug 25 – Sep 8 |
| Cilantro | — | — | Mar 19 – Apr 9 | Sep 8 – Sep 29 |
| Green Beans | — | — | Apr 9 – Apr 30 | Aug 18 – Sep 1 |
| Sweet Corn | — | — | Apr 9 – Apr 23 | — |
| Sweet Potatoes | — | Apr 16 – May 7 | — | — |
| Garlic | — | — | — | Oct 20 – Nov 24 |
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 Altus Dam, OK weather station, 13 km away (elevation 1,526 ft (465 m)).
Frost dates near Granite
- Mangum Apr 8 · Nov 2
- Lone Wolf Apr 2 · Nov 3
- Willow Apr 8 · Nov 2
- Blair Apr 10 · Oct 29
- Martha Apr 10 · Oct 29
- Hobart Apr 7 · Nov 4
- Sentinel Apr 5 · Nov 4
- Carter Apr 5 · Nov 2
- Duke Apr 3 · Nov 4
- Altus Apr 5 · Nov 2
Frequently asked questions
When is the last frost in Granite, OK?
The median last spring frost in Granite, OK is April 2. There is still about a 10% chance of frost after April 21, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Granite, OK?
The median first fall frost is November 3, with about a 10% chance of frost before October 18.
How long is the growing season in Granite, OK?
About 215 days between the median last spring frost and first fall frost.
What planting zone is Granite, OK?
Granite, OK is in USDA hardiness zone 7b.