Frost dates for 73040Geary, OK
The average last spring frost in Geary is April 6 and the average first fall frost is November 5, giving a typical growing season of about 212 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 6
- Average first fall frost
- Nov 5
- Growing season
- 212 days
Safer after Apr 23 (1-in-10 risk)
Possible by Oct 21 (1-in-10 risk)
First frost typically in 2 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 3 · Apr 17 · Apr 30 | Oct 14 · Oct 28 · Nov 9 | 193 days | 100% |
| Frost / freeze (32°F) | Mar 21 · Apr 6 · Apr 23 | Oct 21 · Nov 5 · Nov 20 | 212 days | 100% |
| Hard freeze (28°F) | Mar 3 · Mar 28 · Apr 14 | Oct 29 · Nov 13 · Dec 1 | 234 days | 100% |
Planting calendar for Geary
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 6 – May 12 |
| Tomatoes | Transplant outdoors | Apr 22 – Jul 16 |
| Peppers | Start seeds indoors | Mar 6 – Apr 6 |
| Peppers | Transplant outdoors | May 6 – Jun 6 |
| Eggplant | Start seeds indoors | Mar 23 – Apr 21 |
| Eggplant | Transplant outdoors | May 6 – Jun 6 |
| Cucumbers | Sow outdoors | May 6 – Jul 26 |
| Summer squash | Sow outdoors | Apr 22 – Jun 6 |
| Winter squash & pumpkins | Sow outdoors | May 6 – Jun 6 |
| Snap beans | Sow outdoors | Apr 22 – Aug 18 |
| Sweet corn | Sow outdoors | Apr 22 – Jul 16 |
| Watermelon & cantaloupe | Sow outdoors | May 6 – Jun 6 |
| Okra | Sow outdoors | Apr 29 – May 22 |
| Peas | Sow outdoors (spring) | Mar 6 – Apr 21 |
| Potatoes | Plant outdoors (spring) | Mar 6 – May 6 |
| Onions | Start seeds indoors (spring) | Jan 23 – Feb 19 |
| Onions | Transplant outdoors (spring) | Mar 23 – Apr 21 |
| Broccoli | Start seeds indoors (spring) | Feb 16 – Mar 22 |
| Broccoli | Transplant outdoors (spring) | Mar 23 – Apr 21 |
| Broccoli | Start seeds indoors (fall) | Jul 6 – Jul 16 |
| Broccoli | Transplant outdoors (fall) | Aug 5 – Aug 16 |
| Cabbage | Start seeds indoors (spring) | Feb 6 – Mar 6 |
| Cabbage | Transplant outdoors (spring) | Mar 6 – Apr 6 |
| Cabbage | Start seeds indoors (fall) | Jun 26 – Jul 26 |
| Cabbage | Transplant outdoors (fall) | Jul 26 – Aug 26 |
| Leaf lettuce | Sow outdoors (spring) | Mar 6 – May 22 |
| Leaf lettuce | Sow outdoors (fall) | Jul 26 – Sep 11 |
| Spinach | Sow outdoors (spring) | Feb 27 – Apr 12 |
| Spinach | Sow outdoors (fall) | Aug 12 – Sep 16 |
| Radishes | Sow outdoors (spring) | Mar 6 – Apr 26 |
| Radishes | Sow outdoors (fall) | Jul 26 – Sep 26 |
| Kale | Sow outdoors (spring) | Mar 23 – Apr 12 |
| Kale | Sow outdoors (fall) | Jul 19 – Aug 26 |
| Carrots | Sow outdoors (spring) | Apr 6 – May 22 |
| Carrots | Sow outdoors (fall) | Jun 26 – Aug 11 |
| Garlic | Plant outdoors (fall) | Oct 26 – Nov 26 |
Where these dates come from
ZIP code 73040 is matched to the NOAA station Geary, OK, 6.3 km away, at 1,571 ft elevation (10 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Geary, OK (used) | 1,571 ft | Apr 6 | Nov 5 |
| Hinton 7W Mesonet, OK | 1,617 ft | Apr 5 | Nov 1 |
| Watonga, OK | 1,530 ft | Apr 14 | Oct 27 |
| Watonga 7W Mesonet, OK | 1,696 ft | Apr 6 | Nov 3 |
Frost dates near Geary
- Greenfield, OK 73043 · last Apr 14, first Oct 27
- Hinton, OK 73047 · last Apr 5, first Nov 1
- Calumet, OK 73014 · last Apr 12, first Oct 27
- Hydro, OK 73048 · last Apr 3, first Nov 3
- Watonga, OK 73772 · last Apr 14, first Oct 27
- Lookeba, OK 73053 · last Apr 5, first Nov 1
- Weatherford, OK 73096 · last Apr 3, first Nov 3
- Omega, OK 73764 · last Apr 8, first Nov 1
Frequently asked questions
- When is the last frost in Geary, OK?
- For ZIP code 73040, the average last spring frost (32°F) is April 6, based on NOAA 1991-2020 climate normals for the Geary, OK weather station. There is a 1-in-10 chance of a frost after April 23.
- When is the first frost in Geary, OK?
- The average first fall frost (32°F) is November 5. There is a 1-in-10 chance of frost by October 21, so tender plants are at risk from that point on.
- How long is the growing season in 73040?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 212 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.