Lexington, OK frost dates
Last spring frostApr 4median date
First fall frostNov 2median date
Growing season212 daysfrost-free
Hardiness zone7bZone 7b
How Lexington compares
- In 8 years out of 10, the last spring frost in Lexington falls between March 18 and April 24, a 37-day window. The first fall frost falls between October 18 and November 18.
- The median last frost is the same as the Oklahoma median of Apr 4.
- Its 212-day growing season is longer than 52% 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 80 nights a year at or below 32°F.
- Compared with Norman, OK, 24 km away, the last frost here is 1 day later than there and the growing season is 2 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | March 18 |
| 50% (median) | April 4 |
| 10% (safe for tender plants) | April 24 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 18 |
| 50% (median) | November 2 |
| 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 Lexington, OK
Lexington, OK frost dates — last frost Apr 4, first frost Nov 2, zone 7b. whenisthelastfrost.com
Crop
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Start indoors: Jan 10 to Jan 24Transplant outside: Mar 7 to Mar 21
Start indoors: Jan 24 to Feb 7Transplant outside: Apr 18 to May 2
Start indoors: Jan 24 to Feb 7Transplant outside: Apr 18 to May 2
Start indoors: Feb 7 to Feb 21Transplant outside: Apr 11 to Apr 25
Start indoors: Feb 7 to Feb 21Transplant outside: Mar 14 to Mar 28Sow outdoors: Mar 7 to Apr 11Plant for fall: Sep 7 to Oct 5
Start indoors: Feb 7 to Feb 21Transplant outside: Mar 7 to Mar 21Sow outdoors: Mar 7 to Mar 21Plant for fall: Aug 24 to Sep 14
Start indoors: Feb 7 to Feb 21Transplant outside: Mar 21 to Apr 4Plant for fall: Jul 27 to Aug 17
Start indoors: Feb 7 to Feb 21Transplant outside: Mar 14 to Mar 28Plant for fall: Jul 27 to Aug 17
Start indoors: Feb 7 to Feb 21Transplant outside: Mar 21 to Apr 4Plant for fall: Jul 27 to Aug 17
Start indoors: Feb 21 to Mar 7Transplant outside: Apr 25 to May 9Sow outdoors: Apr 25 to May 9
Start indoors: Feb 21 to Mar 7Transplant outside: Apr 11 to Apr 25
Sow outdoors: Feb 21 to Mar 14Plant for fall: Aug 10 to Aug 31
Sow outdoors: Feb 21 to Mar 14Plant for fall: Sep 7 to Sep 28
Sow outdoors: Feb 28 to Apr 11Plant for fall: Sep 21 to Oct 12
Start indoors: Mar 7 to Mar 14Transplant outside: Apr 18 to Apr 25Sow outdoors: Apr 11 to Apr 25Plant for fall: Aug 17 to Aug 31
Start indoors: Mar 7 to Mar 14Sow outdoors: Apr 11 to Apr 25Plant for fall: Aug 24 to Sep 7
Start indoors: Mar 7 to Mar 14Sow outdoors: Apr 11 to Apr 25
Start indoors: Mar 7 to Mar 14Transplant outside: Apr 18 to May 2
Sow outdoors: Mar 14 to Apr 11Plant for fall: Aug 10 to Aug 24
Sow outdoors: Mar 14 to Apr 11Plant for fall: Aug 24 to Sep 7
Sow outdoors: Mar 14 to Apr 4
Sow outdoors: Mar 21 to Apr 18Plant for fall: Aug 24 to Sep 7
Sow outdoors: Mar 21 to Apr 11Plant for fall: Sep 7 to Sep 28
Sow outdoors: Apr 11 to May 2Plant for fall: Aug 17 to Aug 31
Sow outdoors: Apr 11 to Apr 25
Transplant outside: Apr 18 to May 9
Plant for fall: Oct 19 to Nov 23
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Lexington, OK
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 10 – Jan 24 | Mar 7 – Mar 21 | — | — |
| Peppers | Jan 24 – Feb 7 | Apr 18 – May 2 | — | — |
| Eggplant | Jan 24 – Feb 7 | Apr 18 – May 2 | — | — |
| Tomatoes | Feb 7 – Feb 21 | Apr 11 – Apr 25 | — | — |
| Lettuce | Feb 7 – Feb 21 | Mar 14 – Mar 28 | Mar 7 – Apr 11 | Sep 7 – Oct 5 |
| Kale | Feb 7 – Feb 21 | Mar 7 – Mar 21 | Mar 7 – Mar 21 | Aug 24 – Sep 14 |
| Broccoli | Feb 7 – Feb 21 | Mar 21 – Apr 4 | — | Jul 27 – Aug 17 |
| Cabbage | Feb 7 – Feb 21 | Mar 14 – Mar 28 | — | Jul 27 – Aug 17 |
| Cauliflower | Feb 7 – Feb 21 | Mar 21 – Apr 4 | — | Jul 27 – Aug 17 |
| Okra | Feb 21 – Mar 7 | Apr 25 – May 9 | Apr 25 – May 9 | — |
| Basil | Feb 21 – Mar 7 | Apr 11 – Apr 25 | — | — |
| Peas | — | — | Feb 21 – Mar 14 | Aug 10 – Aug 31 |
| Spinach | — | — | Feb 21 – Mar 14 | Sep 7 – Sep 28 |
| Radishes | — | — | Feb 28 – Apr 11 | Sep 21 – Oct 12 |
| Cucumbers | Mar 7 – Mar 14 | Apr 18 – Apr 25 | Apr 11 – Apr 25 | Aug 17 – Aug 31 |
| Zucchini & Summer Squash | Mar 7 – Mar 14 | — | Apr 11 – Apr 25 | Aug 24 – Sep 7 |
| Winter Squash & Pumpkins | Mar 7 – Mar 14 | — | Apr 11 – Apr 25 | — |
| Melons & Watermelon | Mar 7 – Mar 14 | Apr 18 – May 2 | — | — |
| Carrots | — | — | Mar 14 – Apr 11 | Aug 10 – Aug 24 |
| Beets | — | — | Mar 14 – Apr 11 | Aug 24 – Sep 7 |
| Potatoes | — | — | Mar 14 – Apr 4 | — |
| Swiss Chard | — | — | Mar 21 – Apr 18 | Aug 24 – Sep 7 |
| Cilantro | — | — | Mar 21 – Apr 11 | Sep 7 – Sep 28 |
| Green Beans | — | — | Apr 11 – May 2 | Aug 17 – Aug 31 |
| Sweet Corn | — | — | Apr 11 – Apr 25 | — |
| Sweet Potatoes | — | Apr 18 – May 9 | — | — |
| Garlic | — | — | — | Oct 19 – Nov 23 |
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 Purcell 2 Sw, OK weather station, 13 km away (elevation 1,119 ft (341 m)).
Frost dates near Lexington
- Noble Apr 3 · Nov 3
- Wayne Apr 4 · Nov 2
- Purcell Apr 4 · Nov 2
- Wanette Mar 25 · Nov 8
- Byars Mar 25 · Nov 8
- Macomb Mar 30 · Nov 5
- Washington Apr 3 · Nov 3
- Paoli Apr 5 · Nov 1
- Norman Apr 3 · Nov 3
- Maysville Apr 5 · Nov 1
Frequently asked questions
When is the last frost in Lexington, OK?
The median last spring frost in Lexington, OK is April 4. There is still about a 10% chance of frost after April 24, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Lexington, OK?
The median first fall frost is November 2, with about a 10% chance of frost before October 18.
How long is the growing season in Lexington, OK?
About 212 days between the median last spring frost and first fall frost.
What planting zone is Lexington, OK?
Lexington, OK is in USDA hardiness zone 7b.