USDA Hardiness Zone 6b
Frost Dates for 26351 — Glenville, West Virginia
NOAA 1991–2020 normals from Glenville, WV (738 ft), 1 miles southeast.
Updated
In Glenville, the last spring frost (32°F) is around April 25 in half of years and has passed by May 15 in nine years out of ten. The first fall frost comes around October 24, as early as October 9 one year in ten, leaving a typical freeze-free season of 180 days (NOAA, Glenville, WV).
- Last spring frost
- April 25
- First fall frost
- October 24
- Growing season
- 180 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 6
- Last snow
- March 14
- Winters with snow
- 96%
- Snow per year
- 22.1"
median, 1991–2020
median, 1991–2020
25 of 26 observed
NOAA normal
Frost risk by date in Glenville
Half of springs at Glenville, WV see their last 32°F night by April 25; only one in ten is past it by April 11, and one in ten still has one after May 15. Planting tender crops after May 4 leaves a 30% risk of a frost on them, after May 8 20%, and after May 15 10%. The 20 days between the even-odds date and the one-in-ten date is wider than at 79% of the 84 West Virginia stations behind this site's ZIP pages.
In fall the first 32°F night comes by October 24 in half of years, as early as October 9 one year in ten, and holds off past November 5 one year in ten. A hard freeze of 28°F follows 9 days later, around November 2; in spring the one-in-ten date for 28°F is May 3, 12 days before the 32°F one. The freeze-free season lasts 180 days in a typical year, longer than at 52% of the 84 West Virginia stations; it reaches 199 days one year in ten and falls short of 157 one year in ten. On average 125 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 May 6, and return around October 15. Severe cold of 16°F or below comes every winter, usually between December 6 and March 5.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 21 | Apr 26 | Apr 30 | May 3 | May 6 | May 9 | May 13 | May 17 | May 22 |
| 32°F | Apr 11 | Apr 16 | Apr 19 | Apr 22 | Apr 25 | Apr 30 | May 4 | May 8 | May 15 |
| 28°F | Mar 27 | Apr 1 | Apr 5 | Apr 8 | Apr 11 | Apr 14 | Apr 18 | Apr 23 | May 3 |
| 24°F | Mar 13 | Mar 18 | Mar 22 | Mar 26 | Mar 29 | Apr 1 | Apr 4 | Apr 7 | Apr 13 |
| 20°F | Feb 28 | Mar 4 | Mar 10 | Mar 14 | Mar 17 | Mar 20 | Mar 24 | Mar 28 | Apr 1 |
| 16°F | Feb 11 | Feb 21 | Feb 27 | Mar 2 | Mar 5 | Mar 8 | Mar 12 | Mar 16 | Mar 21 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 1 | Oct 6 | Oct 10 | Oct 13 | Oct 15 | Oct 18 | Oct 21 | Oct 24 | Oct 27 |
| 32°F | Oct 9 | Oct 14 | Oct 19 | Oct 22 | Oct 24 | Oct 27 | Oct 30 | Nov 1 | Nov 5 |
| 28°F | Oct 20 | Oct 25 | Oct 29 | Nov 1 | Nov 2 | Nov 4 | Nov 7 | Nov 10 | Nov 15 |
| 24°F | Oct 31 | Nov 2 | Nov 5 | Nov 9 | Nov 11 | Nov 14 | Nov 17 | Nov 22 | Nov 28 |
| 20°F | Nov 6 | Nov 11 | Nov 16 | Nov 19 | Nov 23 | Nov 28 | Dec 1 | Dec 5 | Dec 14 |
| 16°F | Nov 16 | Nov 24 | Nov 29 | Dec 2 | Dec 6 | Dec 11 | Dec 17 | Dec 23 | Dec 30 |
Freeze probabilities 1991–2020 at Glenville, 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 26351 →Compare Glenville with another place →
Weather by month in Glenville
July is the warmest month at Glenville, WV, averaging 85°F by day and 63°F at night; January is the coldest at 42°F and 22°F. A freezing night is all but certain in every month from November to April (a 90% chance or more). From June to September the chance of a 32°F night stays under 10% each month. In spring, May still brings one in 37% of years.
Warmth for growing adds up to 3,492 growing degree days a year (base 50°F), more than at 67% of the 84 West Virginia stations. 35% of them (1,236) have built up by the end of June, and July adds the most, 753. Precipitation totals 47.1 inches a year, most in May (5.0") and least in October (3.1"); May to September bring 47% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 42 | 22 | 3.5 | 100% | 26 | 7 |
| Feb | 46 | 24 | 3.3 | 100% | 23 | 8 |
| Mar | 55 | 30 | 4.3 | 100% | 20 | 46 |
| Apr | 67 | 39 | 3.9 | 97% | 8 | 170 |
| May | 75 | 50 | 5.0 | 37% | 1 | 390 |
| Jun | 82 | 59 | 4.7 | 0% | 0 | 615 |
| Jul | 85 | 63 | 4.9 | 0% | 0 | 753 |
| Aug | 85 | 62 | 4.0 | 0% | 0 | 725 |
| Sep | 79 | 55 | 3.6 | 0% | 0 | 509 |
| Oct | 69 | 43 | 3.1 | 76% | 5 | 212 |
| Nov | 56 | 32 | 3.1 | 100% | 18 | 44 |
| Dec | 46 | 27 | 3.7 | 100% | 24 | 12 |
Monthly normals 1991–2020 at Glenville, WV (738 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, Gassaway, WV, 19 miles south of Glenville, has a last frost 5 days earlier (April 20), a first frost 1 day later (October 25), a season 5 days longer.
When it snows in Glenville, West Virginia
The first measurable snow (0.1 inch or more) in Glenville usually arrives around December 6, and the last of the season around March 14. Those are the middle dates across the winters of 1991–2020 at Glenville, WV, 1 miles away: half of years saw snow earlier, half later. Snow fell in 96% of those winters. The last 32°F night of spring typically comes 42 days after the last snow.
Planting calendar for 26351
| When | What to do |
|---|---|
| February 14 – February 28 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| February 28 – March 14 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| March 28 – April 11 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| April 25 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by August 1 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by October 10 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| October 24 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 26351 is 1 mile from Glenville, WV, which stands at 738 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 26351 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.
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.