USDA Hardiness Zone 7a
Frost Dates for 67013 — Belle Plaine, Kansas
NOAA 1991–2020 normals from Haysville 3SE, KS (1,240 ft), 9 miles north.
Updated
In Belle Plaine, the last spring frost (32°F) is around April 14 in half of years and has passed by April 30 in nine years out of ten. The first fall frost comes around October 22, as early as October 5 one year in ten, leaving a typical freeze-free season of 189 days (NOAA, Haysville 3SE, KS).
- Last spring frost
- April 14
- First fall frost
- October 22
- Growing season
- 189 days
- Hardiness zone
- 7a
50% probability
50% probability
freeze-free, 50%
0 to 5°F (-17.8 to -15.0°C) coldest night
- First snow
- December 11
- Last snow
- March 2
- Winters with snow
- 94%
- Snow per year
- 9.9"
median, 1991–2020
median, 1991–2020
17 of 18 observed
NOAA normal
Frost risk by date in Belle Plaine
Half of springs at Haysville 3SE, KS see their last 32°F night by April 14; only one in ten is past it by March 30, and one in ten still has one after April 30. Planting tender crops after April 21 leaves a 30% risk of a frost on them, after April 24 20%, and after April 30 10%. The 16 days between the even-odds date and the one-in-ten date is wider than at 76% of the 110 Kansas stations behind this site's ZIP pages.
In fall the first 32°F night comes by October 22 in half of years, as early as October 5 one year in ten, and holds off past November 4 one year in ten. A hard freeze of 28°F follows 9 days later, around October 31; in spring the one-in-ten date for 28°F is April 19, 11 days before the 32°F one. The freeze-free season lasts 189 days in a typical year, longer than at 53% of the 110 Kansas stations; it reaches 210 days one year in ten and falls short of 166 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 10 days longer, to about April 24, and return around October 12. Severe cold of 16°F or below comes every winter, usually between November 29 and March 1.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 10 | Apr 14 | Apr 18 | Apr 21 | Apr 24 | Apr 27 | Apr 30 | May 3 | May 7 |
| 32°F | Mar 30 | Apr 4 | Apr 8 | Apr 12 | Apr 14 | Apr 17 | Apr 21 | Apr 24 | Apr 30 |
| 28°F | Mar 16 | Mar 24 | Mar 28 | Mar 31 | Apr 3 | Apr 6 | Apr 9 | Apr 14 | Apr 19 |
| 24°F | Mar 4 | Mar 10 | Mar 15 | Mar 20 | Mar 24 | Mar 28 | Mar 31 | Apr 4 | Apr 9 |
| 20°F | Feb 23 | Feb 28 | Mar 3 | Mar 7 | Mar 10 | Mar 14 | Mar 18 | Mar 23 | Mar 30 |
| 16°F | Feb 9 | Feb 17 | Feb 23 | Feb 27 | Mar 1 | Mar 4 | Mar 8 | Mar 12 | Mar 17 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Sep 27 | Oct 2 | Oct 6 | Oct 9 | Oct 12 | Oct 15 | Oct 18 | Oct 21 | Oct 25 |
| 32°F | Oct 5 | Oct 12 | Oct 16 | Oct 19 | Oct 22 | Oct 24 | Oct 27 | Oct 30 | Nov 4 |
| 28°F | Oct 16 | Oct 21 | Oct 25 | Oct 27 | Oct 31 | Nov 2 | Nov 5 | Nov 9 | Nov 15 |
| 24°F | Oct 25 | Oct 30 | Nov 2 | Nov 5 | Nov 8 | Nov 11 | Nov 15 | Nov 19 | Nov 26 |
| 20°F | Nov 1 | Nov 6 | Nov 11 | Nov 15 | Nov 19 | Nov 22 | Nov 26 | Dec 1 | Dec 5 |
| 16°F | Nov 9 | Nov 16 | Nov 21 | Nov 25 | Nov 29 | Dec 3 | Dec 6 | Dec 11 | Dec 19 |
Freeze probabilities 1991–2020 at Haysville 3SE, KS, 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 67013 →Compare Belle Plaine with another place →
Weather by month in Belle Plaine
July is the warmest month at Haysville 3SE, KS, averaging 92°F by day and 69°F at night; January is the coldest at 44°F and 21°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 85% of years.
Warmth for growing adds up to 4,403 growing degree days a year (base 50°F), more than at 83% of the 110 Kansas stations. 36% of them (1,606) have built up by the end of June, and July adds the most, 939. Precipitation totals 38.4 inches a year, most in June (6.3") and least in January (0.9"); May to September bring 63% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 44 | 21 | 0.9 | 100% | 28 | 2 |
| Feb | 48 | 25 | 1.5 | 100% | 24 | 13 |
| Mar | 59 | 34 | 2.5 | 99% | 13 | 76 |
| Apr | 68 | 44 | 3.3 | 85% | 4 | 232 |
| May | 77 | 55 | 6.0 | 9% | <1 | 499 |
| Jun | 87 | 65 | 6.3 | 0% | 0 | 784 |
| Jul | 92 | 69 | 4.4 | 0% | 0 | 939 |
| Aug | 90 | 67 | 4.3 | 0% | 0 | 886 |
| Sep | 83 | 58 | 3.0 | 4% | <1 | 617 |
| Oct | 72 | 45 | 3.1 | 82% | 3 | 288 |
| Nov | 57 | 33 | 1.8 | 100% | 14 | 63 |
| Dec | 46 | 24 | 1.3 | 100% | 27 | 4 |
Monthly normals 1991–2020 at Haysville 3SE, KS (1,240 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, Wellington, KS, 11 miles southwest of Belle Plaine, has a last frost 1 day later (April 15), a first frost 7 days later (October 29), a season 6 days longer.
When it snows in Belle Plaine, Kansas
The first measurable snow (0.1 inch or more) in Belle Plaine usually arrives around December 11, and the last of the season around March 2. Those are the middle dates across the winters of 1991–2020 at Belle Plaine 4 W, KS, 3.2 miles away: half of years saw snow earlier, half later. Snow fell in 94% of those winters. The last 32°F night of spring typically comes 43 days after the last snow.
Planting calendar for 67013
| 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 30 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by October 8 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| October 22 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 67013 is 9 miles from Haysville 3SE, KS, which stands at 1,240 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 5 other ZIP codes share the station; its figures are presented in full for 67037 (Derby). The 2023 USDA Plant Hardiness Zone Map lists ZIP 67013 in zone 7a, the band where the coldest night of the year averaged 0 to 5°F (-17.8 to -15.0°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.