Frost dates for 73014Calumet, OK
The average last spring frost in Calumet is April 12 and the average first fall frost is October 27, giving a typical growing season of about 196 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 12
- Average first fall frost
- Oct 27
- Growing season
- 196 days
Safer after Apr 25 (1-in-10 risk)
Possible by Oct 13 (1-in-10 risk)
First frost typically in 1 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 7 · Apr 22 · May 4 | Oct 4 · Oct 18 · Oct 30 | 176 days | 100% |
| Frost / freeze (32°F) | Mar 28 · Apr 12 · Apr 25 | Oct 13 · Oct 27 · Nov 8 | 196 days | 100% |
| Hard freeze (28°F) | Mar 12 · Apr 1 · Apr 18 | Oct 21 · Nov 4 · Nov 17 | 217 days | 100% |
Planting calendar for Calumet
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 12 – May 18 |
| Tomatoes | Transplant outdoors | Apr 28 – Jul 7 |
| Peppers | Start seeds indoors | Mar 12 – Apr 12 |
| Peppers | Transplant outdoors | May 12 – Jun 12 |
| Eggplant | Start seeds indoors | Mar 29 – Apr 27 |
| Eggplant | Transplant outdoors | May 12 – Jun 12 |
| Cucumbers | Sow outdoors | May 12 – Jul 17 |
| Summer squash | Sow outdoors | Apr 28 – Jun 12 |
| Winter squash & pumpkins | Sow outdoors | May 12 – Jun 12 |
| Snap beans | Sow outdoors | Apr 28 – Aug 9 |
| Sweet corn | Sow outdoors | Apr 28 – Jul 7 |
| Watermelon & cantaloupe | Sow outdoors | May 12 – Jun 12 |
| Okra | Sow outdoors | May 5 – May 28 |
| Peas | Sow outdoors (spring) | Mar 12 – Apr 27 |
| Potatoes | Plant outdoors (spring) | Mar 12 – May 12 |
| Onions | Start seeds indoors (spring) | Jan 29 – Feb 25 |
| Onions | Transplant outdoors (spring) | Mar 29 – Apr 27 |
| Broccoli | Start seeds indoors (spring) | Feb 22 – Mar 28 |
| Broccoli | Transplant outdoors (spring) | Mar 29 – Apr 27 |
| Broccoli | Start seeds indoors (fall) | Jun 27 – Jul 7 |
| Broccoli | Transplant outdoors (fall) | Jul 27 – Aug 7 |
| Cabbage | Start seeds indoors (spring) | Feb 12 – Mar 12 |
| Cabbage | Transplant outdoors (spring) | Mar 12 – Apr 12 |
| Cabbage | Start seeds indoors (fall) | Jun 17 – Jul 17 |
| Cabbage | Transplant outdoors (fall) | Jul 17 – Aug 17 |
| Leaf lettuce | Sow outdoors (spring) | Mar 12 – May 28 |
| Leaf lettuce | Sow outdoors (fall) | Jul 17 – Sep 2 |
| Spinach | Sow outdoors (spring) | Mar 5 – Apr 18 |
| Spinach | Sow outdoors (fall) | Aug 3 – Sep 7 |
| Radishes | Sow outdoors (spring) | Mar 12 – May 2 |
| Radishes | Sow outdoors (fall) | Jul 17 – Sep 17 |
| Kale | Sow outdoors (spring) | Mar 29 – Apr 18 |
| Kale | Sow outdoors (fall) | Jul 10 – Aug 17 |
| Carrots | Sow outdoors (spring) | Apr 12 – May 28 |
| Carrots | Sow outdoors (fall) | Jun 17 – Aug 2 |
| Garlic | Plant outdoors (fall) | Oct 17 – Nov 17 |
Where these dates come from
ZIP code 73014 is matched to the NOAA station El Reno 5 Wnw Mesonet, OK, 10.4 km away, at 1,374 ft elevation (129 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| El Reno 5 Wnw Mesonet, OK (used) | 1,374 ft | Apr 12 | Oct 27 |
| El Reno 1 N, OK | 1,325 ft | Apr 6 | Oct 31 |
| Geary, OK | 1,571 ft | Apr 6 | Nov 5 |
| Hinton 7W Mesonet, OK | 1,617 ft | Apr 5 | Nov 1 |
Frost dates near Calumet
- Concho, OK 73022 · last Apr 6, first Oct 31
- El Reno, OK 73036 · last Apr 6, first Oct 31
- Hinton, OK 73047 · last Apr 5, first Nov 1
- Geary, OK 73040 · last Apr 6, first Nov 5
- Union City, OK 73090 · last Apr 2, first Nov 4
- Lookeba, OK 73053 · last Apr 5, first Nov 1
- Greenfield, OK 73043 · last Apr 14, first Oct 27
- Okarche, OK 73762 · last Apr 8, first Nov 1
Frequently asked questions
- When is the last frost in Calumet, OK?
- For ZIP code 73014, the average last spring frost (32°F) is April 12, based on NOAA 1991-2020 climate normals for the El Reno 5 Wnw Mesonet, OK weather station. There is a 1-in-10 chance of a frost after April 25.
- When is the first frost in Calumet, OK?
- The average first fall frost (32°F) is October 27. There is a 1-in-10 chance of frost by October 13, so tender plants are at risk from that point on.
- How long is the growing season in 73014?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 196 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.