USDA Hardiness Zone 7b
Frost Dates for 73433 — Elmore City, Oklahoma
NOAA 1991–2020 normals from Pauls Valley 4 WSW, OK (940 ft), 10 miles northeast.
Updated
In Elmore City, the last spring frost (32°F) is around April 5 in half of years and has passed by April 21 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 210 days (NOAA, Pauls Valley 4 WSW, OK).
- Last spring frost
- April 5
- First fall frost
- November 1
- Growing season
- 210 days
- Hardiness zone
- 7b
50% probability
50% probability
freeze-free, 50%
5 to 10°F (-15.0 to -12.2°C) coldest night
- First snow
- Rare
- Last snow
- Rare
- Winters with snow
- 38%
- Snow per year
- 0.8"
median, 1991–2020
median, 1991–2020
6 of 16 observed
NOAA normal
Frost risk by date in Elmore City
Half of springs at Pauls Valley 4 WSW, OK see their last 32°F night by April 5; only one in ten is past it by March 19, and one in ten still has one after April 21. Planting tender crops after April 11 leaves a 30% risk of a frost on them, after April 15 20%, and after April 21 10%. The 16 days between the even-odds date and the one-in-ten date is narrower than at 61% 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 16 one year in ten. A hard freeze of 28°F follows 8 days later, around November 9; in spring the one-in-ten date for 28°F is April 8, 13 days before the 32°F one. The freeze-free season lasts 210 days in a typical year, shorter than at 50% of the 114 Oklahoma stations; it reaches 233 days one year in ten and falls short of 189 one year in ten. On average 84 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 April 15, and return around October 23. Severe cold of 16°F or below comes in 98% of winters, usually between December 18 and February 13.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 1 | Apr 6 | Apr 9 | Apr 12 | Apr 15 | Apr 19 | Apr 22 | Apr 26 | May 1 |
| 32°F | Mar 19 | Mar 25 | Mar 30 | Apr 2 | Apr 5 | Apr 8 | Apr 11 | Apr 15 | Apr 21 |
| 28°F | Mar 4 | Mar 11 | Mar 16 | Mar 20 | Mar 24 | Mar 28 | Mar 31 | Apr 4 | Apr 8 |
| 24°F | Feb 22 | Feb 27 | Mar 3 | Mar 6 | Mar 11 | Mar 14 | Mar 19 | Mar 24 | Mar 30 |
| 20°F | Feb 3 | Feb 12 | Feb 19 | Feb 24 | Feb 28 | Mar 3 | Mar 7 | Mar 12 | Mar 17 |
| 16°F98% of yrs | Jan 17 | Jan 28 | Feb 1 | Feb 8 | Feb 13 | Feb 20 | Feb 26 | Mar 3 | Mar 11 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 8 | Oct 14 | Oct 18 | Oct 21 | Oct 23 | Oct 26 | Oct 29 | Nov 1 | Nov 6 |
| 32°F | Oct 18 | Oct 22 | Oct 26 | Oct 29 | Nov 1 | Nov 3 | Nov 6 | Nov 10 | Nov 16 |
| 28°F | Oct 25 | Oct 31 | Nov 2 | Nov 6 | Nov 9 | Nov 12 | Nov 16 | Nov 22 | Nov 29 |
| 24°F | Nov 1 | Nov 7 | Nov 12 | Nov 16 | Nov 20 | Nov 25 | Nov 30 | Dec 4 | Dec 9 |
| 20°F | Nov 10 | Nov 18 | Nov 23 | Nov 28 | Dec 2 | Dec 6 | Dec 10 | Dec 15 | Dec 20 |
| 16°F98% of yrs | Nov 24 | Dec 2 | Dec 7 | Dec 13 | Dec 18 | Dec 23 | Dec 28 | Jan 4 | Jan 16 |
Freeze probabilities 1991–2020 at Pauls Valley 4 WSW, 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 73433 →Compare Elmore City with another place →
Weather by month in Elmore City
July is the warmest month at Pauls Valley 4 WSW, OK, averaging 95°F by day and 71°F at night; January is the coldest at 52°F and 27°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 64% of years.
Warmth for growing adds up to 5,333 growing degree days a year (base 50°F), more than at 78% of the 114 Oklahoma stations. 38% of them (2,019) have built up by the end of June, and July adds the most, 1,015. Precipitation totals 38.3 inches a year, most in May (5.3") and least in January (1.8"); May to September bring 52% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 52 | 27 | 1.8 | 100% | 24 | 21 |
| Feb | 56 | 31 | 2.2 | 100% | 17 | 48 |
| Mar | 65 | 39 | 2.8 | 98% | 8 | 158 |
| Apr | 74 | 48 | 3.3 | 64% | 2 | 337 |
| May | 81 | 58 | 5.3 | 2% | 0 | 606 |
| Jun | 89 | 67 | 4.9 | 0% | 0 | 849 |
| Jul | 95 | 71 | 2.7 | 0% | 0 | 1015 |
| Aug | 95 | 69 | 2.7 | 0% | 0 | 998 |
| Sep | 87 | 62 | 4.3 | 0% | 0 | 728 |
| Oct | 76 | 49 | 3.3 | 47% | 1 | 404 |
| Nov | 64 | 39 | 2.6 | 97% | 11 | 137 |
| Dec | 54 | 29 | 2.4 | 100% | 21 | 33 |
Monthly normals 1991–2020 at Pauls Valley 4 WSW, OK (940 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, Pauls Vly 1SSW Mesonet, OK, 11 miles northeast of Elmore City, has a last frost 8 days earlier (March 28), a first frost 6 days later (November 7), a season 13 days longer.
When it snows in Elmore City, Oklahoma
Measurable snow is rare here: only 6 of 16 winters from 1991 to 2020 recorded 0.1 inch or more at Elmore City 3 SW, OK, 1.7 miles away, so there is no typical first-snow date to plan around.
Planting calendar for 73433
| When | What to do |
|---|---|
| January 25 – February 8 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| February 8 – February 22 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| March 8 – March 22 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| April 5 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 73433 is 10 miles from Pauls Valley 4 WSW, OK, which stands at 940 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 73433 in zone 7b, the band where the coldest night of the year averaged 5 to 10°F (-15.0 to -12.2°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.