USDA Hardiness Zone 6b
Frost Dates for 64082 — Lees Summit, Missouri
NOAA 1991–2020 normals from Lees Summit Reed Wr, MO (1,000 ft), 4 miles northeast.
Updated
In Lees Summit, the last spring frost (32°F) is around April 13 in half of years and has passed by April 28 in nine years out of ten. The first fall frost comes around October 26, as early as October 11 one year in ten, leaving a typical freeze-free season of 194 days (NOAA, Lees Summit Reed Wr, MO).
- Last spring frost
- April 13
- First fall frost
- October 26
- Growing season
- 194 days
- Hardiness zone
- 6b
50% probability
50% probability
freeze-free, 50%
-5 to 0°F (-20.6 to -17.8°C) coldest night
- First snow
- December 8
- Last snow
- February 24
- Winters with snow
- 95%
- Snow per year
- —
median, 1991–2020
median, 1991–2020
19 of 20 observed
NOAA normal
Frost risk by date in Lees Summit
Half of springs at Lees Summit Reed Wr, MO see their last 32°F night by April 13; only one in ten is past it by March 31, and one in ten still has one after April 28. Planting tender crops after April 20 leaves a 30% risk of a frost on them, after April 23 20%, and after April 28 10%. The 15 days between the even-odds date and the one-in-ten date is narrower than at 54% of the 158 Missouri stations behind this site's ZIP pages.
In fall the first 32°F night comes by October 26 in half of years, as early as October 11 one year in ten, and holds off past November 6 one year in ten. A hard freeze of 28°F follows 8 days later, around November 3; in spring the one-in-ten date for 28°F is April 18, 10 days before the 32°F one. The freeze-free season lasts 194 days in a typical year, shorter than at 50% of the 158 Missouri stations; it reaches 214 days one year in ten and falls short of 174 one year in ten. On average 114 nights a year drop to 32°F or below. Nights of 36°F, when frost can still settle on leaves in low, open spots, continue 11 days longer, to about April 24, and return around October 16. Severe cold of 16°F or below comes every winter, usually between November 29 and March 4.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 11 | Apr 15 | Apr 18 | Apr 21 | Apr 24 | Apr 27 | Apr 30 | May 3 | May 7 |
| 32°F | Mar 31 | Apr 4 | Apr 7 | Apr 11 | Apr 13 | Apr 16 | Apr 20 | Apr 23 | Apr 28 |
| 28°F | Mar 16 | Mar 22 | Mar 28 | Mar 31 | Apr 3 | Apr 5 | Apr 8 | Apr 12 | Apr 18 |
| 24°F | Mar 5 | Mar 11 | Mar 14 | Mar 18 | Mar 22 | Mar 26 | Mar 30 | Apr 3 | Apr 7 |
| 20°F | Feb 26 | Mar 1 | Mar 5 | Mar 8 | Mar 11 | Mar 15 | Mar 18 | Mar 23 | Mar 29 |
| 16°F | Feb 17 | Feb 23 | Feb 27 | Mar 1 | Mar 4 | Mar 7 | Mar 10 | Mar 14 | Mar 19 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Sep 29 | Oct 5 | Oct 10 | Oct 13 | Oct 16 | Oct 19 | Oct 21 | Oct 24 | Oct 27 |
| 32°F | Oct 11 | Oct 16 | Oct 20 | Oct 23 | Oct 26 | Oct 28 | Oct 31 | Nov 2 | Nov 6 |
| 28°F | Oct 19 | Oct 24 | Oct 29 | Nov 1 | Nov 3 | Nov 5 | Nov 8 | Nov 11 | Nov 17 |
| 24°F | Oct 30 | Nov 3 | Nov 5 | Nov 8 | Nov 10 | Nov 13 | Nov 16 | Nov 21 | Nov 26 |
| 20°F | Nov 4 | Nov 9 | Nov 12 | Nov 15 | Nov 18 | Nov 23 | Nov 26 | Nov 30 | Dec 5 |
| 16°F | Nov 9 | Nov 16 | Nov 21 | Nov 26 | Nov 29 | Dec 2 | Dec 6 | Dec 10 | Dec 17 |
Freeze probabilities 1991–2020 at Lees Summit Reed Wr, MO, from NOAA NCEI U.S. Climate Normals. Where a temperature is reached in fewer than 99.5% of years, the dates describe only the years that reach it. Not a forecast.
Frost risk on any date in 64082 →Compare Lees Summit with another place →
Weather by month in Lees Summit
July is the warmest month at Lees Summit Reed Wr, MO, averaging 86°F by day and 67°F at night; January is the coldest at 36°F and 17°F. A freezing night is all but certain in every month from November to March (a 90% chance or more). From May to September the chance of a 32°F night stays under 10% each month. In spring, April still brings one in 88% of years.
Warmth for growing adds up to 3,675 growing degree days a year (base 50°F), fewer than at 84% of the 158 Missouri stations. 36% of them (1,309) have built up by the end of June, and July adds the most, 823.
| Month | High °F | Low °F | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|
| Jan | 36 | 17 | 100% | 28 | 1 |
| Feb | 42 | 21 | 100% | 22 | 6 |
| Mar | 53 | 33 | 100% | 16 | 55 |
| Apr | 62 | 43 | 88% | 4 | 160 |
| May | 73 | 54 | 6% | <1 | 420 |
| Jun | 81 | 63 | 0% | 0 | 667 |
| Jul | 86 | 67 | 0% | 0 | 823 |
| Aug | 85 | 65 | 0% | 0 | 769 |
| Sep | 76 | 57 | 2% | <1 | 495 |
| Oct | 66 | 45 | 73% | 3 | 227 |
| Nov | 52 | 32 | 100% | 14 | 47 |
| Dec | 41 | 23 | 100% | 26 | 6 |
Monthly normals 1991–2020 at Lees Summit Reed Wr, MO (1,000 ft), NOAA NCEI. "32°F night": chance of at least one in the month. GDD: growing degree days, base 50°F.
Compared with the next station
The nearest other station, Pleasant Hill WFO, MO, 8 miles east of Lees Summit, has a last frost 5 days earlier (April 8), a first frost 3 days later (October 29), a season 10 days longer.
When it snows in Lees Summit, Missouri
The first measurable snow (0.1 inch or more) in Lees Summit usually arrives around December 8, and the last of the season around February 24. Those are the middle dates across the winters of 1991–2020 at Lees Summit Reed Wr, MO, 3.8 miles away: half of years saw snow earlier, half later. Snow fell in 95% of those winters. The last 32°F night of spring typically comes 48 days after the last snow.
Planting calendar for 64082
| When | What to do |
|---|---|
| February 2 – February 16 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| February 16 – March 2 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| March 16 – March 30 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| April 13 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by August 3 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by October 12 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| October 26 onward | Plant garlic, mulch beds, lift tender bulbsGarlic wants a cold spell; bare soil loses structure over winter. |
The weeks before and after the 50% dates are general rules of thumb, not NOAA figures; a seed packet gives the timing for each variety.
Where these figures come from
ZIP 64082 is 4 miles from Lees Summit Reed Wr, MO, which stands at 1,000 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 3 other ZIP codes share the station; its figures are presented in full for 64083 (Raymore). The 2023 USDA Plant Hardiness Zone Map lists ZIP 64082 in zone 6b, the band where the coldest night of the year averaged -5 to 0°F (-20.6 to -17.8°C) over 1991–2020; a zone describes winter lows, not frost dates.
Hardiness zone and temperature range: USDA Plant Hardiness Zone Map 2023 (USDA-ARS, Oregon State University), ZIP-code listing, unchanged. °C converted from °F by this site.
Thirty-year averages, not a forecast: check the forecast before planting out. How stations are matched and which pages are offered to search engines: methodology.