Frost dates for 73946Kenton, OK
The average last spring frost in Kenton is April 20 and the average first fall frost is October 20, giving a typical growing season of about 179 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 20
- Average first fall frost
- Oct 20
- Growing season
- 179 days
Safer after May 4 (1-in-10 risk)
Possible by Oct 6 (1-in-10 risk)
Last frost typically in 175 days
Frost risk by date
NOAA reports frost dates as probabilities. The middle date is the average (a 50% chance). For spring, the 10% date is a safer planting date: frost after it happens in about 1 year in 10. Light frost (36°F) can damage tender plants; a hard freeze (28°F) kills most annuals.
| Temperature | Last spring: 90% / 50% / 10% chance | First fall: 10% / 50% / 90% chance | Growing season (50%) | Years with at least one |
|---|---|---|---|---|
| Light frost (36°F) | Apr 17 · May 1 · May 15 | Sep 30 · Oct 11 · Oct 23 | 160 days | 100% |
| Frost / freeze (32°F) | Apr 5 · Apr 20 · May 4 | Oct 6 · Oct 20 · Nov 1 | 179 days | 100% |
| Hard freeze (28°F) | Mar 22 · Apr 8 · Apr 26 | Oct 16 · Oct 29 · Nov 11 | 201 days | 100% |
Planting calendar for Kenton
Planting windows from the University of Maryland Extension calendar, shifted to your average frost dates. Use them as a starting point and adjust for seed packet instructions and local conditions.
| Crop | Task | Window |
|---|---|---|
| Tomatoes | Start seeds indoors | Mar 20 – May 26 |
| Tomatoes | Transplant outdoors | May 6 – Jun 30 |
| Peppers | Start seeds indoors | Mar 20 – Apr 20 |
| Peppers | Transplant outdoors | May 20 – Jun 20 |
| Eggplant | Start seeds indoors | Apr 6 – May 5 |
| Eggplant | Transplant outdoors | May 20 – Jun 20 |
| Cucumbers | Sow outdoors | May 20 – Jul 10 |
| Summer squash | Sow outdoors | May 6 – Jun 20 |
| Winter squash & pumpkins | Sow outdoors | May 20 – Jun 20 |
| Snap beans | Sow outdoors | May 6 – Aug 2 |
| Sweet corn | Sow outdoors | May 6 – Jun 30 |
| Watermelon & cantaloupe | Sow outdoors | May 20 – Jun 20 |
| Okra | Sow outdoors | May 13 – Jun 5 |
| Peas | Sow outdoors (spring) | Mar 20 – May 5 |
| Potatoes | Plant outdoors (spring) | Mar 20 – May 20 |
| Onions | Start seeds indoors (spring) | Feb 6 – Mar 5 |
| Onions | Transplant outdoors (spring) | Apr 6 – May 5 |
| Broccoli | Start seeds indoors (spring) | Mar 2 – Apr 5 |
| Broccoli | Transplant outdoors (spring) | Apr 6 – May 5 |
| Broccoli | Start seeds indoors (fall) | Jun 20 – Jun 30 |
| Broccoli | Transplant outdoors (fall) | Jul 20 – Jul 31 |
| Cabbage | Start seeds indoors (spring) | Feb 20 – Mar 20 |
| Cabbage | Transplant outdoors (spring) | Mar 20 – Apr 20 |
| Cabbage | Start seeds indoors (fall) | Jun 10 – Jul 10 |
| Cabbage | Transplant outdoors (fall) | Jul 10 – Aug 10 |
| Leaf lettuce | Sow outdoors (spring) | Mar 20 – Jun 5 |
| Leaf lettuce | Sow outdoors (fall) | Jul 10 – Aug 26 |
| Spinach | Sow outdoors (spring) | Mar 13 – Apr 26 |
| Spinach | Sow outdoors (fall) | Jul 27 – Aug 31 |
| Radishes | Sow outdoors (spring) | Mar 20 – May 10 |
| Radishes | Sow outdoors (fall) | Jul 10 – Sep 10 |
| Kale | Sow outdoors (spring) | Apr 6 – Apr 26 |
| Kale | Sow outdoors (fall) | Jul 3 – Aug 10 |
| Carrots | Sow outdoors (spring) | Apr 20 – Jun 5 |
| Carrots | Sow outdoors (fall) | Jun 10 – Jul 26 |
| Garlic | Plant outdoors (fall) | Oct 10 – Nov 10 |
Where these dates come from
ZIP code 73946 is matched to the NOAA station Kenton, OK, 0 km away, at 4,350 ft elevation (0 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Kenton, OK (used) | 4,350 ft | Apr 20 | Oct 20 |
| Kim 10Sse, CO | 5,257 ft | Apr 24 | Oct 18 |
| Campo 7 S, CO | 4,105 ft | Apr 29 | Oct 13 |
| Boise City 2 E, OK | 4,133 ft | Apr 26 | Oct 17 |
Frost dates near Kenton
- Felt, OK 73937 · last Apr 26, first Oct 17
- Pritchett, CO 81064 · last May 3, first Oct 10
- Boise City, OK 73933 · last Apr 26, first Oct 17
- Campo, CO 81029 · last Apr 29, first Oct 13
- Clayton, NM 88415 · last Apr 27, first Oct 17
- Texline, TX 79087 · last Apr 27, first Oct 17
- Kim, CO 81049 · last May 5, first Oct 9
- Springfield, CO 81073 · last May 3, first Oct 10
Frequently asked questions
- When is the last frost in Kenton, OK?
- For ZIP code 73946, the average last spring frost (32°F) is April 20, based on NOAA 1991-2020 climate normals for the Kenton, OK weather station. There is a 1-in-10 chance of a frost after May 4.
- When is the first frost in Kenton, OK?
- The average first fall frost (32°F) is October 20. There is a 1-in-10 chance of frost by October 6, so tender plants are at risk from that point on.
- How long is the growing season in 73946?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 179 days long.
- Are these frost dates a forecast?
- No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.