USDA Hardiness Zone 8a
Frost Dates for 74523 — Antlers, Oklahoma
NOAA 1991–2020 normals from Antlers, OK (470 ft), under a mile south.
Updated
In Antlers, the last spring frost (32°F) is around April 3 in half of years and has passed by April 20 in nine years out of ten. The first fall frost comes around November 1, as early as October 18 one year in ten, leaving a typical freeze-free season of 213 days (NOAA, Antlers, OK).
- Last spring frost
- April 3
- First fall frost
- November 1
- Growing season
- 213 days
- Hardiness zone
- 8a
50% probability
50% probability
freeze-free, 50%
10 to 15°F (-12.2 to -9.4°C) coldest night
- First snow
- Rare
- Last snow
- Rare
- Winters with snow
- 16%
- Snow per year
- 0.3"
median, 1991–2020
median, 1991–2020
4 of 25 observed
NOAA normal
Frost risk by date in Antlers
Half of springs at Antlers, OK see their last 32°F night by April 3; only one in ten is past it by March 15, and one in ten still has one after April 20. Planting tender crops after April 10 leaves a 30% risk of a frost on them, after April 14 20%, and after April 20 10%. The 17 days between the even-odds date and the one-in-ten date is narrower than at 41% of the 114 Oklahoma stations behind this site's ZIP pages.
In fall the first 32°F night comes by November 1 in half of years, as early as October 18 one year in ten, and holds off past November 17 one year in ten. A hard freeze of 28°F follows 10 days later, around November 11; in spring the one-in-ten date for 28°F is April 6, 14 days before the 32°F one. The freeze-free season lasts 213 days in a typical year, longer than at 59% of the 114 Oklahoma stations; it reaches 237 days one year in ten and falls short of 191 one year in ten. On average 71 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 April 14, and return around October 23. Severe cold of 16°F or below comes in 93% of winters, usually between December 24 and February 3.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Mar 30 | Apr 5 | Apr 9 | Apr 12 | Apr 14 | Apr 17 | Apr 21 | Apr 24 | Apr 29 |
| 32°F | Mar 15 | Mar 22 | Mar 28 | Mar 31 | Apr 3 | Apr 6 | Apr 10 | Apr 14 | Apr 20 |
| 28°F | Feb 28 | Mar 7 | Mar 12 | Mar 17 | Mar 20 | Mar 24 | Mar 29 | Apr 1 | Apr 6 |
| 24°F | Feb 15 | Feb 24 | Feb 28 | Mar 4 | Mar 7 | Mar 11 | Mar 15 | Mar 19 | Mar 25 |
| 20°F | Jan 26 | Feb 2 | Feb 9 | Feb 16 | Feb 22 | Feb 28 | Mar 4 | Mar 8 | Mar 15 |
| 16°F93% of yrs | Dec 31 | Jan 16 | Jan 25 | Jan 30 | Feb 3 | Feb 9 | Feb 15 | Feb 25 | Mar 4 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 10 | Oct 14 | Oct 18 | Oct 21 | Oct 23 | Oct 26 | Oct 29 | Nov 1 | Nov 5 |
| 32°F | Oct 18 | Oct 23 | Oct 27 | Oct 31 | Nov 1 | Nov 4 | Nov 7 | Nov 11 | Nov 17 |
| 28°F | Oct 27 | Nov 2 | Nov 5 | Nov 7 | Nov 11 | Nov 14 | Nov 18 | Nov 24 | Dec 1 |
| 24°F | Nov 5 | Nov 10 | Nov 15 | Nov 19 | Nov 24 | Nov 28 | Dec 2 | Dec 5 | Dec 12 |
| 20°F | Nov 14 | Nov 21 | Nov 26 | Dec 1 | Dec 6 | Dec 11 | Dec 17 | Dec 24 | Jan 1 |
| 16°F93% of yrs | Nov 27 | Dec 3 | Dec 9 | Dec 17 | Dec 24 | Dec 31 | Jan 3 | Jan 10 | Jan 25 |
Freeze probabilities 1991–2020 at Antlers, OK, 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 74523 →Compare Antlers with another place →
Weather by month in Antlers
July is the warmest month at Antlers, OK, averaging 93°F by day and 71°F at night; January is the coldest at 52°F and 29°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 59% of years.
Warmth for growing adds up to 5,283 growing degree days a year (base 50°F), more than at 72% of the 114 Oklahoma stations. 38% of them (2,018) have built up by the end of June, and July adds the most, 984. Precipitation totals 48.2 inches a year, most in May (6.3") and least in January (2.9"); May to September bring 44% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 52 | 29 | 2.9 | 100% | 21 | 25 |
| Feb | 57 | 33 | 2.9 | 100% | 14 | 53 |
| Mar | 65 | 40 | 4.1 | 97% | 7 | 161 |
| Apr | 73 | 49 | 4.4 | 59% | 1 | 338 |
| May | 80 | 59 | 6.3 | 0% | 0 | 609 |
| Jun | 88 | 68 | 4.3 | 0% | 0 | 832 |
| Jul | 93 | 71 | 3.4 | 0% | 0 | 984 |
| Aug | 93 | 69 | 3.1 | 0% | 0 | 972 |
| Sep | 86 | 62 | 3.9 | 0% | 0 | 723 |
| Oct | 76 | 50 | 4.9 | 44% | 1 | 409 |
| Nov | 64 | 39 | 3.9 | 98% | 9 | 137 |
| Dec | 55 | 31 | 4.1 | 100% | 18 | 40 |
Monthly normals 1991–2020 at Antlers, OK (470 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, Antlers 5NW, OK, 5 miles west of Antlers, has a last frost 1 day earlier (April 2), the same first-frost date, a season 1 day shorter.
When it snows in Antlers, Oklahoma
Measurable snow is rare here: only 4 of 25 winters from 1991 to 2020 recorded 0.1 inch or more at Antlers, OK, 0.6 miles away, so there is no typical first-snow date to plan around.
Planting calendar for 74523
| When | What to do |
|---|---|
| January 23 – February 6 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| February 6 – February 20 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| March 6 – March 20 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| April 3 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by August 9 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by October 18 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| November 1 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 74523 is under a mile from Antlers, OK, which stands at 470 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 74523 in zone 8a, the band where the coldest night of the year averaged 10 to 15°F (-12.2 to -9.4°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.