USDA Hardiness Zone 6b
Frost Dates for 66075 — Pleasanton, Kansas
NOAA 1991–2020 normals from Mound City 1SSW, KS (912 ft), 7 miles southwest.
Updated
In Pleasanton, the last spring frost (32°F) is around April 15 in half of years and has passed by May 2 in nine years out of ten. The first fall frost comes around October 22, as early as October 8 one year in ten, leaving a typical freeze-free season of 188 days (NOAA, Mound City 1SSW, KS).
- Last spring frost
- April 15
- First fall frost
- October 22
- Growing season
- 188 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 19
- Last snow
- February 19
- Winters with snow
- 89%
- Snow per year
- —
median, 1991–2020
median, 1991–2020
16 of 18 observed
NOAA normal
Frost risk by date in Pleasanton
Half of springs at Mound City 1SSW, KS see their last 32°F night by April 15; only one in ten is past it by March 31, and one in ten still has one after May 2. Planting tender crops after April 23 leaves a 30% risk of a frost on them, after April 27 20%, and after May 2 10%. The 17 days between the even-odds date and the one-in-ten date is wider than at 85% 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 8 one year in ten, and holds off past November 1 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, 13 days before the 32°F one. The freeze-free season lasts 188 days in a typical year, shorter than at 48% of the 110 Kansas stations; it reaches 207 days one year in ten and falls short of 168 one year in ten. On average 124 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 12 days longer, to about April 27, and return around October 13. Severe cold of 16°F or below comes every winter, usually between November 30 and March 4.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 11 | Apr 16 | Apr 20 | Apr 23 | Apr 27 | Apr 30 | May 2 | May 5 | May 11 |
| 32°F | Mar 31 | Apr 6 | Apr 9 | Apr 12 | Apr 15 | Apr 19 | Apr 23 | Apr 27 | May 2 |
| 28°F | Mar 19 | Mar 25 | Mar 29 | Apr 1 | Apr 4 | Apr 7 | Apr 10 | Apr 13 | Apr 19 |
| 24°F | Mar 6 | Mar 13 | Mar 17 | Mar 21 | Mar 25 | Mar 29 | Mar 31 | Apr 4 | Apr 8 |
| 20°F | Feb 26 | Mar 3 | Mar 6 | Mar 11 | Mar 14 | Mar 18 | Mar 22 | Mar 27 | Apr 1 |
| 16°F | Feb 15 | Feb 22 | Feb 27 | Mar 2 | Mar 4 | Mar 8 | Mar 12 | Mar 16 | Mar 21 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Sep 27 | Oct 3 | Oct 7 | Oct 10 | Oct 13 | Oct 15 | Oct 18 | Oct 21 | Oct 24 |
| 32°F | Oct 8 | Oct 13 | Oct 17 | Oct 20 | Oct 22 | Oct 24 | Oct 27 | Oct 29 | Nov 1 |
| 28°F | Oct 17 | Oct 22 | Oct 25 | Oct 28 | Oct 31 | Nov 1 | Nov 4 | Nov 8 | Nov 13 |
| 24°F | Oct 26 | Oct 31 | Nov 2 | Nov 5 | Nov 9 | Nov 12 | Nov 16 | Nov 20 | Nov 26 |
| 20°F | Nov 2 | Nov 7 | Nov 11 | Nov 15 | Nov 18 | Nov 22 | Nov 27 | Dec 1 | Dec 7 |
| 16°F | Nov 10 | Nov 17 | Nov 22 | Nov 26 | Nov 30 | Dec 3 | Dec 7 | Dec 12 | Dec 19 |
Freeze probabilities 1991–2020 at Mound City 1SSW, 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 66075 →Compare Pleasanton with another place →
Compared with the next station
The nearest other station, Mound City, KS, 7 miles southwest of Pleasanton, has a last frost 2 days earlier (April 13), a first frost 1 day later (October 23), a season 4 days longer.
When it snows in Pleasanton, Kansas
The first measurable snow (0.1 inch or more) in Pleasanton usually arrives around December 19, and the last of the season around February 19. Those are the middle dates across the winters of 1991–2020 at Mound City, KS, 7.2 miles away: half of years saw snow earlier, half later. Snow fell in 89% of those winters. The last 32°F night of spring typically comes 55 days after the last snow.
Planting calendar for 66075
| When | What to do |
|---|---|
| February 4 – February 18 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| February 18 – March 4 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| March 18 – April 1 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| April 15 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 66075 is 7 miles from Mound City 1SSW, KS, which stands at 912 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 66075 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.