Frost Dates for Lawton, OK
In Lawton, OK, the average last spring frost is around Mar 26 and the average first fall frost around Nov 7, for a growing season of about 225 days. For frost-tender plants, wait until Apr 14, when the chance of frost drops to 10%.
Based on NOAA 1991–2020 records from the Lawton, OK weather station, 2 miles away, elevation 1,150 ft. Frost can come earlier in low spots and valleys and later near cities and large lakes.
Frost probability by date
Chance of a 32°F frost after the spring date, or before the fall date.
| Chance | Last spring frost | First fall frost |
|---|---|---|
| 10% | Apr 14 | Oct 21 |
| 20% | Apr 7 | Oct 27 |
| 30% | Apr 3 | Nov 1 |
| 40% | Mar 31 | Nov 4 |
| 50% | Mar 26 | Nov 7 |
| 60% | Mar 21 | Nov 10 |
| 70% | Mar 17 | Nov 14 |
| 80% | Mar 12 | Nov 17 |
| 90% | Mar 4 | Nov 22 |
Light frost vs. hard freeze
Average (50%) dates for each temperature. Tender plants are damaged at 36°F; most hardy crops survive until 28°F.
| Temperature | Last in spring | First in fall |
|---|---|---|
| Light frost (36°F) | Apr 7 | Oct 29 |
| Frost / freeze (32°F) | Mar 26 | Nov 7 |
| Hard freeze (28°F) | Mar 11 | Nov 16 |
Planting calendar for Lawton
Transplant Apr 2 – Apr 16
Transplant Apr 9 – Apr 23
Transplant Apr 9 – Apr 23
Transplant Apr 2 – Apr 16
Sow or transplant Apr 2 – Apr 16
Sow or transplant Apr 2 – Apr 16
Sow or transplant Apr 9 – Apr 23
Sow or transplant Feb 26 – Mar 12
Fall sowing Sep 12 – Oct 10
Fall sowing Sep 12 – Oct 3
Fall sowing Aug 29 – Sep 12
Sow or transplant Feb 26 – Mar 12
Fall sowing Aug 29 – Sep 26
Transplant Mar 12 – Mar 26
Fall sowing Aug 15 – Aug 29
Transplant Mar 5 – Mar 19
Fall sowing Aug 15 – Aug 29
Fall sowing Aug 15 – Aug 29
Fall sowing Sep 26 – Oct 17
Fall sowing Aug 29 – Sep 12
Plant Feb 26 – Mar 12
Based on the average last frost (Mar 26) and first frost (Nov 7). The dashed lines mark those dates. Seed packets list days to maturity; adjust for your varieties.