Frost dates for 73165 — Oklahoma City, OK
How Oklahoma City compares
- In 8 years out of 10, the last spring frost in Oklahoma City falls between March 12 and April 17, a 36-day window. The first fall frost falls between October 21 and November 19.
- The median last frost is 4 days earlier than the Oklahoma median of Apr 4.
- Its 219-day growing season is longer than 79% of the 582 Oklahoma places with a regular frost season (state median 211 days).
- The last frost is 5 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 72 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | March 12 |
| 50% (median) | March 31 |
| 10% (safe for tender plants) | April 17 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 21 |
| 50% (median) | November 5 |
| 90% (late) | November 19 |
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 Oklahoma City, OK
Frost dates for 73165 — Oklahoma City, OK — last frost Mar 31, first frost Nov 5, zone 7b. whenisthelastfrost.com
When to plant vegetables in Oklahoma City, OK
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 6 – Jan 20 | Mar 3 – Mar 17 | — | — |
| Peppers | Jan 20 – Feb 3 | Apr 14 – Apr 28 | — | — |
| Eggplant | Jan 20 – Feb 3 | Apr 14 – Apr 28 | — | — |
| Tomatoes | Feb 3 – Feb 17 | Apr 7 – Apr 21 | — | — |
| Lettuce | Feb 3 – Feb 17 | Mar 10 – Mar 24 | Mar 3 – Apr 7 | Sep 10 – Oct 8 |
| Kale | Feb 3 – Feb 17 | Mar 3 – Mar 17 | Mar 3 – Mar 17 | Aug 27 – Sep 17 |
| Broccoli | Feb 3 – Feb 17 | Mar 17 – Mar 31 | — | Jul 30 – Aug 20 |
| Cabbage | Feb 3 – Feb 17 | Mar 10 – Mar 24 | — | Jul 30 – Aug 20 |
| Cauliflower | Feb 3 – Feb 17 | Mar 17 – Mar 31 | — | Jul 30 – Aug 20 |
| Okra | Feb 17 – Mar 3 | Apr 21 – May 5 | Apr 21 – May 5 | — |
| Basil | Feb 17 – Mar 3 | Apr 7 – Apr 21 | — | — |
| Peas | — | — | Feb 17 – Mar 10 | Aug 13 – Sep 3 |
| Spinach | — | — | Feb 17 – Mar 10 | Sep 10 – Oct 1 |
| Radishes | — | — | Feb 24 – Apr 7 | Sep 24 – Oct 15 |
| Cucumbers | Mar 3 – Mar 10 | Apr 14 – Apr 21 | Apr 7 – Apr 21 | Aug 20 – Sep 3 |
| Zucchini & Summer Squash | Mar 3 – Mar 10 | — | Apr 7 – Apr 21 | Aug 27 – Sep 10 |
| Winter Squash & Pumpkins | Mar 3 – Mar 10 | — | Apr 7 – Apr 21 | — |
| Melons & Watermelon | Mar 3 – Mar 10 | Apr 14 – Apr 28 | — | — |
| Carrots | — | — | Mar 10 – Apr 7 | Aug 13 – Aug 27 |
| Beets | — | — | Mar 10 – Apr 7 | Aug 27 – Sep 10 |
| Potatoes | — | — | Mar 10 – Mar 31 | — |
| Swiss Chard | — | — | Mar 17 – Apr 14 | Aug 27 – Sep 10 |
| Cilantro | — | — | Mar 17 – Apr 7 | Sep 10 – Oct 1 |
| Green Beans | — | — | Apr 7 – Apr 28 | Aug 20 – Sep 3 |
| Sweet Corn | — | — | Apr 7 – Apr 21 | — |
| Sweet Potatoes | — | Apr 14 – May 5 | — | — |
| 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 Norman 2nw Mesonet, OK weather station, 14 km away (elevation 1,181 ft (360 m)).
ZIP codes in Oklahoma City: 73101 73102 73103 73104 73105 73106 73107 73108 73109 73110 73111 73112 73113 73114 73115 73116 73117 73118 73119 73120 73121 73122 73123 73124 73125 73126 73127 73128 73129 73130 73131 73132 73134 73135 73136 73137 73139 73140 73141 73142 73143 73144 73145 73146 73147 73148 73149 73150 73151 73152 73153 73154 73155 73156 73157 73159 73160 73162 73163 73164 …
Frost dates near Oklahoma City
- Norman Apr 3 · Nov 3
- Newalla Mar 30 · Nov 5
- Choctaw Apr 2 · Nov 5
- Nicoma Park Apr 2 · Nov 5
- Noble Apr 3 · Nov 3
- Spencer Apr 2 · Nov 5
- Harrah Apr 2 · Nov 5
- Washington Apr 3 · Nov 3
Frequently asked questions
When is the last frost in Oklahoma City, OK?
The median last spring frost in Oklahoma City, OK is March 31. There is still about a 10% chance of frost after April 17, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Oklahoma City, OK?
The median first fall frost is November 5, with about a 10% chance of frost before October 21.
How long is the growing season in Oklahoma City, OK?
About 219 days between the median last spring frost and first fall frost.
What planting zone is Oklahoma City, OK?
Oklahoma City, OK is in USDA hardiness zone 7b.