Frost dates for 66282Overland Park, KS
The average last spring frost in Overland Park is April 10 and the average first fall frost is October 29, giving a typical growing season of about 202 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 10
- Average first fall frost
- Oct 29
- Growing season
- 202 days
Safer after Apr 24 (1-in-10 risk)
Possible by Oct 13 (1-in-10 risk)
First frost typically in 12 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 5 · Apr 19 · May 2 | Oct 2 · Oct 20 · Oct 31 | 181 days | 100% |
| Frost / freeze (32°F) | Mar 27 · Apr 10 · Apr 24 | Oct 13 · Oct 29 · Nov 12 | 202 days | 100% |
| Hard freeze (28°F) | Mar 13 · Mar 31 · Apr 17 | Oct 23 · Nov 6 · Nov 25 | 223 days | 100% |
Planting calendar for Overland Park
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 10 – May 16 |
| Tomatoes | Transplant outdoors | Apr 26 – Jul 9 |
| Peppers | Start seeds indoors | Mar 10 – Apr 10 |
| Peppers | Transplant outdoors | May 10 – Jun 10 |
| Eggplant | Start seeds indoors | Mar 27 – Apr 25 |
| Eggplant | Transplant outdoors | May 10 – Jun 10 |
| Cucumbers | Sow outdoors | May 10 – Jul 19 |
| Summer squash | Sow outdoors | Apr 26 – Jun 10 |
| Winter squash & pumpkins | Sow outdoors | May 10 – Jun 10 |
| Snap beans | Sow outdoors | Apr 26 – Aug 11 |
| Sweet corn | Sow outdoors | Apr 26 – Jul 9 |
| Watermelon & cantaloupe | Sow outdoors | May 10 – Jun 10 |
| Okra | Sow outdoors | May 3 – May 26 |
| Peas | Sow outdoors (spring) | Mar 10 – Apr 25 |
| Potatoes | Plant outdoors (spring) | Mar 10 – May 10 |
| Onions | Start seeds indoors (spring) | Jan 27 – Feb 23 |
| Onions | Transplant outdoors (spring) | Mar 27 – Apr 25 |
| Broccoli | Start seeds indoors (spring) | Feb 20 – Mar 26 |
| Broccoli | Transplant outdoors (spring) | Mar 27 – Apr 25 |
| Broccoli | Start seeds indoors (fall) | Jun 29 – Jul 9 |
| Broccoli | Transplant outdoors (fall) | Jul 29 – Aug 9 |
| Cabbage | Start seeds indoors (spring) | Feb 10 – Mar 10 |
| Cabbage | Transplant outdoors (spring) | Mar 10 – Apr 10 |
| Cabbage | Start seeds indoors (fall) | Jun 19 – Jul 19 |
| Cabbage | Transplant outdoors (fall) | Jul 19 – Aug 19 |
| Leaf lettuce | Sow outdoors (spring) | Mar 10 – May 26 |
| Leaf lettuce | Sow outdoors (fall) | Jul 19 – Sep 4 |
| Spinach | Sow outdoors (spring) | Mar 3 – Apr 16 |
| Spinach | Sow outdoors (fall) | Aug 5 – Sep 9 |
| Radishes | Sow outdoors (spring) | Mar 10 – Apr 30 |
| Radishes | Sow outdoors (fall) | Jul 19 – Sep 19 |
| Kale | Sow outdoors (spring) | Mar 27 – Apr 16 |
| Kale | Sow outdoors (fall) | Jul 12 – Aug 19 |
| Carrots | Sow outdoors (spring) | Apr 10 – May 26 |
| Carrots | Sow outdoors (fall) | Jun 19 – Aug 4 |
| Garlic | Plant outdoors (fall) | Oct 19 – Nov 19 |
Where these dates come from
ZIP code 66282 is matched to the NOAA station Olathe 3E, KS, 6.4 km away, at 1,055 ft elevation (25 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Olathe 3E, KS (used) | 1,055 ft | Apr 10 | Oct 29 |
| Olathe Johnson Co Ap, KS | 1,087 ft | Apr 13 | Oct 24 |
| Olathe Johnson Co Exec Ap, KS | 1,070 ft | Apr 8 | Oct 29 |
| Bonner Springs, KS | 850 ft | Apr 16 | Oct 22 |
Frost dates near Overland Park
- Olathe, KS 66051 · last Apr 10, first Oct 29
- Overland Park, KS 66225 · last Apr 10, first Oct 29
- Shawnee Mission, KS 66276 · last Apr 10, first Oct 29
- New Century, KS 66031 · last Apr 13, first Oct 24
- Lenexa, KS 66215 · last Apr 10, first Oct 29
- Gardner, KS 66030 · last Apr 13, first Oct 24
- De Soto, KS 66018 · last Apr 13, first Oct 24
- Spring Hill, KS 66083 · last Apr 13, first Oct 24
Frequently asked questions
- When is the last frost in Overland Park, KS?
- For ZIP code 66282, the average last spring frost (32°F) is April 10, based on NOAA 1991-2020 climate normals for the Olathe 3E, KS weather station. There is a 1-in-10 chance of a frost after April 24.
- When is the first frost in Overland Park, KS?
- The average first fall frost (32°F) is October 29. 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 66282?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 202 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.