USDA Hardiness Zone 6b
Frost Dates for 65305 — Whiteman Afb, Missouri
NOAA 1991–2020 normals from Warrensburg 4NW, MO (796 ft), 14 miles west.
Updated
In Whiteman Afb, the last spring frost (32°F) is around April 14 in half of years and has passed by May 4 in nine years out of ten. The first fall frost comes around October 21, as early as October 6 one year in ten, leaving a typical freeze-free season of 189 days (NOAA, Warrensburg 4NW, MO).
- Last spring frost
- April 14
- First fall frost
- October 21
- Growing season
- 189 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 10
- Last snow
- February 24
- Winters with snow
- 100%
- Snow per year
- —
median, 1991–2020
median, 1991–2020
16 of 16 observed
NOAA normal
Frost risk by date in Whiteman Afb
Half of springs at Warrensburg 4NW, MO see their last 32°F night by April 14; only one in ten is past it by March 31, and one in ten still has one after May 4. Planting tender crops after April 23 leaves a 30% risk of a frost on them, after April 28 20%, and after May 4 10%. The 20 days between the even-odds date and the one-in-ten date is wider than at 97% of the 158 Missouri stations behind this site's ZIP pages.
In fall the first 32°F night comes by October 21 in half of years, as early as October 6 one year in ten, and holds off past November 3 one year in ten. A hard freeze of 28°F follows 10 days later, around October 31; in spring the one-in-ten date for 28°F is April 23, 11 days before the 32°F one. The freeze-free season lasts 189 days in a typical year, shorter than at 67% of the 158 Missouri stations; it reaches 209 days one year in ten and falls short of 166 one year in ten. On average 118 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 13 days longer, to about April 27, and return around October 10. Severe cold of 16°F or below comes every winter, usually between December 1 and March 2.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 10 | Apr 15 | Apr 19 | Apr 23 | Apr 27 | May 1 | May 3 | May 7 | May 12 |
| 32°F | Mar 31 | Apr 3 | Apr 7 | Apr 11 | Apr 14 | Apr 18 | Apr 23 | Apr 28 | May 4 |
| 28°F | Mar 18 | Mar 24 | Mar 29 | Apr 1 | Apr 3 | Apr 7 | Apr 10 | Apr 15 | Apr 23 |
| 24°F | Mar 5 | Mar 11 | Mar 16 | Mar 20 | Mar 24 | Mar 28 | Mar 31 | Apr 4 | Apr 10 |
| 20°F | Feb 23 | Feb 28 | Mar 4 | Mar 7 | Mar 11 | Mar 15 | Mar 19 | Mar 24 | Mar 31 |
| 16°F | Feb 13 | Feb 20 | Feb 23 | Feb 28 | Mar 2 | Mar 5 | Mar 9 | Mar 14 | Mar 21 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Sep 27 | Oct 1 | Oct 5 | Oct 8 | Oct 10 | Oct 13 | Oct 16 | Oct 19 | Oct 23 |
| 32°F | Oct 6 | Oct 13 | Oct 16 | Oct 19 | Oct 21 | Oct 24 | Oct 26 | Oct 30 | Nov 3 |
| 28°F | Oct 17 | Oct 21 | Oct 25 | Oct 28 | Oct 31 | Nov 1 | Nov 4 | Nov 8 | Nov 14 |
| 24°F | Oct 25 | Oct 31 | Nov 2 | Nov 5 | Nov 8 | Nov 11 | Nov 15 | Nov 21 | Nov 27 |
| 20°F | Nov 2 | Nov 7 | Nov 12 | Nov 15 | Nov 19 | Nov 25 | Nov 29 | Dec 2 | Dec 7 |
| 16°F | Nov 10 | Nov 17 | Nov 22 | Nov 26 | Dec 1 | Dec 4 | Dec 8 | Dec 12 | Dec 19 |
Freeze probabilities 1991–2020 at Warrensburg 4NW, 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 65305 →Compare Whiteman Afb with another place →
Weather by month in Whiteman Afb
July is the warmest month at Warrensburg 4NW, MO, averaging 90°F by day and 67°F at night; January is the coldest at 40°F and 18°F. A freezing night is all but certain in every month from November to March (a 90% chance or more). From June to September the chance of a 32°F night stays under 10% each month. In spring, April still brings one in 85% of years and May still brings one in 16% of years.
Warmth for growing adds up to 4,022 growing degree days a year (base 50°F), fewer than at 54% of the 158 Missouri stations. 36% of them (1,458) have built up by the end of June, and July adds the most, 877.
| Month | High °F | Low °F | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|
| Jan | 40 | 18 | 100% | 28 | 2 |
| Feb | 45 | 22 | 100% | 23 | 8 |
| Mar | 57 | 32 | 99% | 16 | 65 |
| Apr | 67 | 42 | 85% | 4 | 201 |
| May | 76 | 53 | 16% | <1 | 465 |
| Jun | 85 | 63 | 0% | 0 | 717 |
| Jul | 90 | 67 | 0% | 0 | 877 |
| Aug | 89 | 65 | 0% | 0 | 829 |
| Sep | 81 | 55 | 4% | 0 | 552 |
| Oct | 69 | 43 | 84% | 4 | 243 |
| Nov | 56 | 33 | 100% | 15 | 57 |
| Dec | 45 | 23 | 100% | 26 | 7 |
Monthly normals 1991–2020 at Warrensburg 4NW, MO (796 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, Windsor, MO, 14 miles south of Whiteman Afb, has a last frost 7 days earlier (April 7), a first frost 7 days later (October 28), a season 13 days longer.
When it snows in Whiteman Afb, Missouri
The first measurable snow (0.1 inch or more) in Whiteman Afb usually arrives around December 10, and the last of the season around February 24. Those are the middle dates across the winters of 1991–2020 at Windsor, MO, 14 miles away: half of years saw snow earlier, half later. Every one of those winters saw snow. The last 32°F night of spring typically comes 49 days after the last snow.
Planting calendar for 65305
| When | What to do |
|---|---|
| February 3 – February 17 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| February 17 – March 3 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| March 17 – March 31 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| April 14 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by July 29 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by October 7 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| October 21 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 65305 is 14 miles from Warrensburg 4NW, MO, which stands at 796 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 64093 (Warrensburg). The 2023 USDA Plant Hardiness Zone Map lists ZIP 65305 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.