USDA Hardiness Zone 6a
Frost Dates for 45877 — Pandora, Ohio
NOAA 1991–2020 normals from Pandora, OH (770 ft), under a mile west.
Updated
In Pandora, the last spring frost (32°F) is around April 23 in half of years and has passed by May 9 in nine years out of ten. The first fall frost comes around October 22, as early as October 6 one year in ten, leaving a typical freeze-free season of 180 days (NOAA, Pandora, OH).
- Last spring frost
- April 23
- First fall frost
- October 22
- Growing season
- 180 days
- Hardiness zone
- 6a
50% probability
50% probability
freeze-free, 50%
-10 to -5°F (-23.3 to -20.6°C) coldest night
- First snow
- November 23
- Last snow
- March 27
- Winters with snow
- 100%
- Snow per year
- 32.5"
median, 1991–2020
median, 1991–2020
30 of 30 observed
NOAA normal
Frost risk by date in Pandora
Half of springs at Pandora, OH see their last 32°F night by April 23; only one in ten is past it by April 10, and one in ten still has one after May 9. Planting tender crops after April 30 leaves a 30% risk of a frost on them, after May 3 20%, and after May 9 10%. The 16 days between the even-odds date and the one-in-ten date is narrower than at 53% of the 148 Ohio 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 6 one year in ten, and holds off past November 4 one year in ten. A hard freeze of 28°F follows 11 days later, around November 2; in spring the one-in-ten date for 28°F is April 29, 10 days before the 32°F one. The freeze-free season lasts 180 days in a typical year, longer than at 50% of the 148 Ohio stations; it reaches 199 days one year in ten and falls short of 159 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 10 days longer, to about May 3, and return around October 10. Severe cold of 16°F or below comes every winter, usually between December 4 and March 11.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 19 | Apr 24 | Apr 28 | May 1 | May 3 | May 6 | May 10 | May 13 | May 18 |
| 32°F | Apr 10 | Apr 14 | Apr 17 | Apr 20 | Apr 23 | Apr 26 | Apr 30 | May 3 | May 9 |
| 28°F | Mar 29 | Apr 3 | Apr 7 | Apr 11 | Apr 14 | Apr 16 | Apr 19 | Apr 23 | Apr 29 |
| 24°F | Mar 16 | Mar 22 | Mar 26 | Mar 29 | Apr 1 | Apr 3 | Apr 6 | Apr 11 | Apr 16 |
| 20°F | Mar 3 | Mar 10 | Mar 14 | Mar 18 | Mar 22 | Mar 25 | Mar 29 | Mar 31 | Apr 5 |
| 16°F | Feb 20 | Feb 28 | Mar 4 | Mar 8 | Mar 11 | Mar 15 | Mar 18 | Mar 22 | Mar 28 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Sep 26 | Sep 30 | Oct 4 | Oct 7 | Oct 10 | Oct 13 | Oct 15 | Oct 19 | Oct 23 |
| 32°F | Oct 6 | Oct 12 | Oct 16 | Oct 19 | Oct 22 | Oct 25 | Oct 28 | Oct 31 | Nov 4 |
| 28°F | Oct 20 | Oct 25 | Oct 28 | Nov 1 | Nov 2 | Nov 5 | Nov 8 | Nov 11 | Nov 16 |
| 24°F | Nov 1 | Nov 4 | Nov 7 | Nov 10 | Nov 14 | Nov 17 | Nov 20 | Nov 25 | Dec 1 |
| 20°F | Nov 9 | Nov 13 | Nov 17 | Nov 22 | Nov 26 | Nov 29 | Dec 2 | Dec 7 | Dec 14 |
| 16°F | Nov 17 | Nov 24 | Nov 28 | Dec 1 | Dec 4 | Dec 8 | Dec 13 | Dec 18 | Dec 24 |
Freeze probabilities 1991–2020 at Pandora, OH, 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 45877 →Compare Pandora with another place →
Weather by month in Pandora
July is the warmest month at Pandora, OH, averaging 84°F by day and 64°F at night; January is the coldest at 33°F and 19°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 28% of years.
Warmth for growing adds up to 3,272 growing degree days a year (base 50°F), more than at 55% of the 148 Ohio stations. 36% of them (1,165) have built up by the end of June, and July adds the most, 741. Precipitation totals 38.7 inches a year, most in May (4.4") and least in February (2.2"); May to September bring 50% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 33 | 19 | 2.6 | 100% | 27 | 3 |
| Feb | 37 | 22 | 2.2 | 100% | 24 | 4 |
| Mar | 48 | 30 | 2.6 | 100% | 21 | 32 |
| Apr | 61 | 40 | 3.8 | 98% | 7 | 125 |
| May | 73 | 51 | 4.4 | 28% | <1 | 377 |
| Jun | 81 | 61 | 4.3 | 0% | 0 | 625 |
| Jul | 84 | 64 | 4.0 | 0% | 0 | 741 |
| Aug | 82 | 62 | 3.5 | 0% | 0 | 679 |
| Sep | 76 | 54 | 3.1 | 3% | <1 | 463 |
| Oct | 64 | 44 | 2.8 | 80% | 3 | 181 |
| Nov | 50 | 34 | 2.8 | 100% | 15 | 37 |
| Dec | 38 | 25 | 2.6 | 100% | 25 | 6 |
Monthly normals 1991–2020 at Pandora, OH (770 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, Findlay Airport, OH, 15 miles east of Pandora, has a last frost 4 days earlier (April 19), a first frost 1 day later (October 23), a season 5 days longer.
When it snows in Pandora, Ohio
The first measurable snow (0.1 inch or more) in Pandora usually arrives around November 23, and the last of the season around March 27. Those are the middle dates across the winters of 1991–2020 at Pandora, OH, 0.5 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 27 days after the last snow.
Planting calendar for 45877
| When | What to do |
|---|---|
| February 12 – February 26 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| February 26 – March 12 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| March 26 – April 9 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| April 23 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 45877 is under a mile from Pandora, OH, which stands at 770 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 4 other ZIP codes share the station; its figures are presented in full for 45875 (Ottawa). The 2023 USDA Plant Hardiness Zone Map lists ZIP 45877 in zone 6a, the band where the coldest night of the year averaged -10 to -5°F (-23.3 to -20.6°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.