USDA Hardiness Zone 7a
Frost Dates for 25320 — Sissonville, West Virginia
NOAA 1991–2020 normals from Sissonville 1SW, WV (632 ft), 1 miles southwest.
Updated
In Sissonville, the last spring frost (32°F) is around April 29 in half of years and has passed by May 15 in nine years out of ten. The first fall frost comes around October 16, as early as October 4 one year in ten, leaving a typical freeze-free season of 169 days (NOAA, Sissonville 1SW, WV).
- Last spring frost
- April 29
- First fall frost
- October 16
- Growing season
- 169 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
- November 23
- Last snow
- March 28
- Winters with snow
- 100%
- Snow per year
- 31.5"
median, 1991–2020
median, 1991–2020
30 of 30 observed
NOAA normal
Frost risk by date in Sissonville
Half of springs at Sissonville 1SW, WV see their last 32°F night by April 29; only one in ten is past it by April 15, and one in ten still has one after May 15. Planting tender crops after May 5 leaves a 30% risk of a frost on them, after May 9 20%, and after May 15 10%. The 16 days between the even-odds date and the one-in-ten date is narrower than at 81% of the 84 West Virginia stations behind this site's ZIP pages.
In fall the first 32°F night comes by October 16 in half of years, as early as October 4 one year in ten, and holds off past October 29 one year in ten. A hard freeze of 28°F follows 10 days later, around October 26; in spring the one-in-ten date for 28°F is May 5, 10 days before the 32°F one. The freeze-free season lasts 169 days in a typical year, shorter than at 75% of the 84 West Virginia stations; it reaches 188 days one year in ten and falls short of 149 one year in ten. On average 133 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 May 9, and return around October 7. Severe cold of 16°F or below comes every winter, usually between November 30 and March 11.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 25 | Apr 30 | May 2 | May 6 | May 9 | May 12 | May 16 | May 20 | May 26 |
| 32°F | Apr 15 | Apr 19 | Apr 23 | Apr 26 | Apr 29 | May 1 | May 5 | May 9 | May 15 |
| 28°F | Apr 2 | Apr 7 | Apr 12 | Apr 14 | Apr 17 | Apr 20 | Apr 24 | Apr 29 | May 5 |
| 24°F | Mar 20 | Mar 26 | Mar 31 | Apr 2 | Apr 5 | Apr 7 | Apr 11 | Apr 14 | Apr 19 |
| 20°F | Mar 7 | Mar 13 | Mar 17 | Mar 21 | Mar 25 | Mar 28 | Mar 31 | Apr 3 | Apr 7 |
| 16°F | Feb 18 | Feb 26 | Mar 3 | Mar 7 | Mar 11 | Mar 15 | Mar 18 | Mar 23 | Mar 29 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Sep 23 | Sep 29 | Oct 2 | Oct 4 | Oct 7 | Oct 9 | Oct 12 | Oct 14 | Oct 19 |
| 32°F | Oct 4 | Oct 8 | Oct 11 | Oct 14 | Oct 16 | Oct 19 | Oct 21 | Oct 24 | Oct 29 |
| 28°F | Oct 13 | Oct 18 | Oct 21 | Oct 24 | Oct 26 | Oct 29 | Nov 1 | Nov 3 | Nov 6 |
| 24°F | Oct 24 | Oct 28 | Oct 31 | Nov 2 | Nov 5 | Nov 7 | Nov 11 | Nov 14 | Nov 18 |
| 20°F | Nov 2 | Nov 6 | Nov 10 | Nov 13 | Nov 16 | Nov 18 | Nov 22 | Nov 27 | Dec 4 |
| 16°F | Nov 10 | Nov 16 | Nov 21 | Nov 26 | Nov 30 | Dec 3 | Dec 9 | Dec 16 | Dec 24 |
Freeze probabilities 1991–2020 at Sissonville 1SW, WV, 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 25320 →Compare Sissonville with another place →
Compared with the next station
The nearest other station, Charleston Yeager Airport, WV, 11 miles south of Sissonville and 278 feet higher, has a last frost 13 days earlier (April 16), a first frost 10 days later (October 26), a season 23 days longer.
When it snows in Sissonville, West Virginia
The first measurable snow (0.1 inch or more) in Sissonville usually arrives around November 23, and the last of the season around March 28. Those are the middle dates across the winters of 1991–2020 at Charleston Yeager Airport, WV, 10.6 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 32 days after the last snow.
Planting calendar for 25320
| When | What to do |
|---|---|
| February 18 – March 4 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| March 4 – March 18 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| April 1 – April 15 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| April 29 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by July 24 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by October 2 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| October 16 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 25320 is 1 mile from Sissonville 1SW, WV, which stands at 632 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 25320 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.
Frost dates across West Virginia →
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.