Frost dates for 73501 — Lawton, OK
Last spring frostApr 1median date
First fall frostNov 5median date
Growing season218 daysfrost-free
Hardiness zone7bZone 7b
How Lawton compares
- In 8 years out of 10, the last spring frost in Lawton falls between March 12 and April 19, a 38-day window. The first fall frost falls between October 22 and November 18.
- The median last frost is 3 days earlier than the Oklahoma median of Apr 4.
- Its 218-day growing season is longer than 76% of the 582 Oklahoma places with a regular frost season (state median 211 days).
- The last frost is 4 days earlier than the zone 7b median of Apr 5. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 7b chart.
- The weather station records an average of 79 nights a year at or below 32°F.
- Compared with Wichita Falls, TX, 77 km away, the last frost here is 6 days later than there and the growing season is 10 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | March 12 |
| 50% (median) | April 1 |
| 10% (safe for tender plants) | April 19 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 22 |
| 50% (median) | November 5 |
| 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 Lawton, OK
Frost dates for 73501 — Lawton, OK — last frost Apr 1, first frost Nov 5, zone 7b. whenisthelastfrost.com
Crop
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Start indoors: Jan 7 to Jan 21Transplant outside: Mar 4 to Mar 18
Start indoors: Jan 21 to Feb 4Transplant outside: Apr 15 to Apr 29
Start indoors: Jan 21 to Feb 4Transplant outside: Apr 15 to Apr 29
Start indoors: Feb 4 to Feb 18Transplant outside: Apr 8 to Apr 22
Start indoors: Feb 4 to Feb 18Transplant outside: Mar 11 to Mar 25Sow outdoors: Mar 4 to Apr 8Plant for fall: Sep 10 to Oct 8
Start indoors: Feb 4 to Feb 18Transplant outside: Mar 4 to Mar 18Sow outdoors: Mar 4 to Mar 18Plant for fall: Aug 27 to Sep 17
Start indoors: Feb 4 to Feb 18Transplant outside: Mar 18 to Apr 1Plant for fall: Jul 30 to Aug 20
Start indoors: Feb 4 to Feb 18Transplant outside: Mar 11 to Mar 25Plant for fall: Jul 30 to Aug 20
Start indoors: Feb 4 to Feb 18Transplant outside: Mar 18 to Apr 1Plant for fall: Jul 30 to Aug 20
Start indoors: Feb 18 to Mar 4Transplant outside: Apr 22 to May 6Sow outdoors: Apr 22 to May 6
Start indoors: Feb 18 to Mar 4Transplant outside: Apr 8 to Apr 22
Sow outdoors: Feb 18 to Mar 11Plant for fall: Aug 13 to Sep 3
Sow outdoors: Feb 18 to Mar 11Plant for fall: Sep 10 to Oct 1
Sow outdoors: Feb 25 to Apr 8Plant for fall: Sep 24 to Oct 15
Start indoors: Mar 4 to Mar 11Transplant outside: Apr 15 to Apr 22Sow outdoors: Apr 8 to Apr 22Plant for fall: Aug 20 to Sep 3
Start indoors: Mar 4 to Mar 11Sow outdoors: Apr 8 to Apr 22Plant for fall: Aug 27 to Sep 10
Start indoors: Mar 4 to Mar 11Sow outdoors: Apr 8 to Apr 22
Start indoors: Mar 4 to Mar 11Transplant outside: Apr 15 to Apr 29
Sow outdoors: Mar 11 to Apr 8Plant for fall: Aug 13 to Aug 27
Sow outdoors: Mar 11 to Apr 8Plant for fall: Aug 27 to Sep 10
Sow outdoors: Mar 11 to Apr 1
Sow outdoors: Mar 18 to Apr 15Plant for fall: Aug 27 to Sep 10
Sow outdoors: Mar 18 to Apr 8Plant for fall: Sep 10 to Oct 1
Sow outdoors: Apr 8 to Apr 29Plant for fall: Aug 20 to Sep 3
Sow outdoors: Apr 8 to Apr 22
Transplant outside: Apr 15 to May 6
Plant for fall: Oct 22 to Nov 26
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Lawton, OK
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 7 – Jan 21 | Mar 4 – Mar 18 | — | — |
| Peppers | Jan 21 – Feb 4 | Apr 15 – Apr 29 | — | — |
| Eggplant | Jan 21 – Feb 4 | Apr 15 – Apr 29 | — | — |
| Tomatoes | Feb 4 – Feb 18 | Apr 8 – Apr 22 | — | — |
| Lettuce | Feb 4 – Feb 18 | Mar 11 – Mar 25 | Mar 4 – Apr 8 | Sep 10 – Oct 8 |
| Kale | Feb 4 – Feb 18 | Mar 4 – Mar 18 | Mar 4 – Mar 18 | Aug 27 – Sep 17 |
| Broccoli | Feb 4 – Feb 18 | Mar 18 – Apr 1 | — | Jul 30 – Aug 20 |
| Cabbage | Feb 4 – Feb 18 | Mar 11 – Mar 25 | — | Jul 30 – Aug 20 |
| Cauliflower | Feb 4 – Feb 18 | Mar 18 – Apr 1 | — | Jul 30 – Aug 20 |
| Okra | Feb 18 – Mar 4 | Apr 22 – May 6 | Apr 22 – May 6 | — |
| Basil | Feb 18 – Mar 4 | Apr 8 – Apr 22 | — | — |
| Peas | — | — | Feb 18 – Mar 11 | Aug 13 – Sep 3 |
| Spinach | — | — | Feb 18 – Mar 11 | Sep 10 – Oct 1 |
| Radishes | — | — | Feb 25 – Apr 8 | Sep 24 – Oct 15 |
| Cucumbers | Mar 4 – Mar 11 | Apr 15 – Apr 22 | Apr 8 – Apr 22 | Aug 20 – Sep 3 |
| Zucchini & Summer Squash | Mar 4 – Mar 11 | — | Apr 8 – Apr 22 | Aug 27 – Sep 10 |
| Winter Squash & Pumpkins | Mar 4 – Mar 11 | — | Apr 8 – Apr 22 | — |
| Melons & Watermelon | Mar 4 – Mar 11 | Apr 15 – Apr 29 | — | — |
| Carrots | — | — | Mar 11 – Apr 8 | Aug 13 – Aug 27 |
| Beets | — | — | Mar 11 – Apr 8 | Aug 27 – Sep 10 |
| Potatoes | — | — | Mar 11 – Apr 1 | — |
| Swiss Chard | — | — | Mar 18 – Apr 15 | Aug 27 – Sep 10 |
| Cilantro | — | — | Mar 18 – Apr 8 | Sep 10 – Oct 1 |
| Green Beans | — | — | Apr 8 – Apr 29 | Aug 20 – Sep 3 |
| Sweet Corn | — | — | Apr 8 – Apr 22 | — |
| Sweet Potatoes | — | Apr 15 – May 6 | — | — |
| Garlic | — | — | — | Oct 22 – Nov 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 Lawton Muni Ap, OK weather station, 6 km away (elevation 1,070 ft (326 m)).
ZIP codes in Lawton: 73501 73502 73505 73506 73507
Frost dates near Lawton
- Fort Sill Mar 26 · Nov 7
- Geronimo Apr 1 · Nov 5
- Medicine Park Mar 21 · Nov 12
- Elgin Mar 21 · Nov 12
- Faxon Apr 7 · Nov 2
- Cache Mar 21 · Nov 12
- Sterling Apr 4 · Oct 31
- Walters Apr 1 · Nov 5
Frequently asked questions
When is the last frost in Lawton, OK?
The median last spring frost in Lawton, OK is April 1. There is still about a 10% chance of frost after April 19, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Lawton, OK?
The median first fall frost is November 5, with about a 10% chance of frost before October 22.
How long is the growing season in Lawton, OK?
About 218 days between the median last spring frost and first fall frost.
What planting zone is Lawton, OK?
Lawton, OK is in USDA hardiness zone 7b.