Frost dates for 64145 — Kansas City, MO
How Kansas City compares
- In 8 years out of 10, the last spring frost in Kansas City falls between March 23 and April 23, a 31-day window. The first fall frost falls between October 15 and November 11.
- The median last frost is 4 days earlier than the Missouri median of Apr 12.
- Its 204-day growing season is longer than 77% of the 938 Missouri places with a regular frost season (state median 195 days).
- The last frost is 14 days earlier than the zone 6b median of Apr 22. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 6b chart.
- The weather station records an average of 101 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | March 23 |
| 50% (median) | April 8 |
| 10% (safe for tender plants) | April 23 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 15 |
| 50% (median) | October 29 |
| 90% (late) | November 11 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Planting calendar for Kansas City, MO
Frost dates for 64145 — Kansas City, MO — last frost Apr 8, first frost Oct 29, zone 6b. whenisthelastfrost.com
When to plant vegetables in Kansas City, MO
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 14 – Jan 28 | Mar 11 – Mar 25 | — | — |
| Peppers | Jan 28 – Feb 11 | Apr 22 – May 6 | — | — |
| Eggplant | Jan 28 – Feb 11 | Apr 22 – May 6 | — | — |
| Tomatoes | Feb 11 – Feb 25 | Apr 15 – Apr 29 | — | — |
| Lettuce | Feb 11 – Feb 25 | Mar 18 – Apr 1 | Mar 11 – Apr 15 | Sep 3 – Oct 1 |
| Kale | Feb 11 – Feb 25 | Mar 11 – Mar 25 | Mar 11 – Mar 25 | Aug 20 – Sep 10 |
| Broccoli | Feb 11 – Feb 25 | Mar 25 – Apr 8 | — | Jul 23 – Aug 13 |
| Cabbage | Feb 11 – Feb 25 | Mar 18 – Apr 1 | — | Jul 23 – Aug 13 |
| Cauliflower | Feb 11 – Feb 25 | Mar 25 – Apr 8 | — | Jul 23 – Aug 13 |
| Okra | Feb 25 – Mar 11 | Apr 29 – May 13 | Apr 29 – May 13 | — |
| Basil | Feb 25 – Mar 11 | Apr 15 – Apr 29 | — | — |
| Peas | — | — | Feb 25 – Mar 18 | Aug 6 – Aug 27 |
| Spinach | — | — | Feb 25 – Mar 18 | Sep 3 – Sep 24 |
| Radishes | — | — | Mar 4 – Apr 15 | Sep 17 – Oct 8 |
| Cucumbers | Mar 11 – Mar 18 | Apr 22 – Apr 29 | Apr 15 – Apr 29 | Aug 13 – Aug 27 |
| Zucchini & Summer Squash | Mar 11 – Mar 18 | — | Apr 15 – Apr 29 | Aug 20 – Sep 3 |
| Winter Squash & Pumpkins | Mar 11 – Mar 18 | — | Apr 15 – Apr 29 | — |
| Melons & Watermelon | Mar 11 – Mar 18 | Apr 22 – May 6 | — | — |
| Carrots | — | — | Mar 18 – Apr 15 | Aug 6 – Aug 20 |
| Beets | — | — | Mar 18 – Apr 15 | Aug 20 – Sep 3 |
| Potatoes | — | — | Mar 18 – Apr 8 | — |
| Swiss Chard | — | — | Mar 25 – Apr 22 | Aug 20 – Sep 3 |
| Cilantro | — | — | Mar 25 – Apr 15 | Sep 3 – Sep 24 |
| Green Beans | — | — | Apr 15 – May 6 | Aug 13 – Aug 27 |
| Sweet Corn | — | — | Apr 15 – Apr 29 | — |
| Sweet Potatoes | — | Apr 22 – May 13 | — | — |
| Garlic | — | — | — | Oct 15 – Nov 19 |
Dates come from the median frost dates and common extension-service timing. Adjust for your soil temperature, microclimate and the varieties you grow.
About these dates
Based on 1991–2020 NOAA climate normals for the Olathe Johnson Co Exec Ap, KS weather station, 13 km away (elevation 1,070 ft (326 m)).
ZIP codes in Kansas City: 64101 64102 64105 64106 64108 64109 64110 64111 64112 64113 64114 64116 64117 64118 64119 64120 64121 64123 64124 64125 64126 64127 64128 64129 64130 64131 64132 64133 64134 64136 64137 64138 64139 64141 64144 64145 64146 64147 64148 64149 64151 64152 64153 64154 64155 64156 64157 64158 64161 64162 64163 64164 64165 64166 64167 64168 64170 64171 64179 64180 …
Frost dates near Kansas City
- Grandview Apr 7 · Oct 29
- Belton Apr 8 · Oct 29
- Raymore Apr 13 · Oct 26
- Lees Summit Apr 7 · Oct 29
- Cleveland Apr 8 · Oct 29
- Peculiar Apr 8 · Oct 29
- Independence Apr 10 · Oct 27
- Greenwood Apr 13 · Oct 26
Frequently asked questions
When is the last frost in Kansas City, MO?
The median last spring frost in Kansas City, MO is April 8. There is still about a 10% chance of frost after April 23, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Kansas City, MO?
The median first fall frost is October 29, with about a 10% chance of frost before October 15.
How long is the growing season in Kansas City, MO?
About 204 days between the median last spring frost and first fall frost.
What planting zone is Kansas City, MO?
Kansas City, MO is in USDA hardiness zone 6b.