USDA Hardiness Zone 7b
Frost Dates for 73047 — Hinton, Oklahoma
NOAA 1991–2020 normals from Hinton 7W Mesonet, OK (1,617 ft), 9 miles west.
Updated
In Hinton, the last spring frost (32°F) is around April 5 in half of years and has passed by April 22 in nine years out of ten. The first fall frost comes around November 1, as early as October 19 one year in ten, leaving a typical freeze-free season of 208 days (NOAA, Hinton 7W Mesonet, OK).
- Last spring frost
- April 5
- First fall frost
- November 1
- Growing season
- 208 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
- January 2
- Last snow
- February 4
- Winters with snow
- 90%
- Snow per year
- 5"
median, 1991–2020
median, 1991–2020
18 of 20 observed
NOAA normal
Frost risk by date in Hinton
Half of springs at Hinton 7W Mesonet, OK see their last 32°F night by April 5; only one in ten is past it by March 20, and one in ten still has one after April 22. Planting tender crops after April 13 leaves a 30% risk of a frost on them, after April 17 20%, and after April 22 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 19 one year in ten, and holds off past November 15 one year in ten. A hard freeze of 28°F follows 9 days later, around November 10; in spring the one-in-ten date for 28°F is April 10, 12 days before the 32°F one. The freeze-free season lasts 208 days in a typical year, shorter than at 62% of the 114 Oklahoma stations; it reaches 231 days one year in ten and falls short of 188 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 12 days longer, to about April 17, and return around October 23. Severe cold of 16°F or below comes in 98% of winters, usually between December 13 and February 12.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Mar 31 | Apr 5 | Apr 10 | Apr 14 | Apr 17 | Apr 21 | Apr 24 | Apr 28 | May 3 |
| 32°F | Mar 20 | Mar 26 | Mar 31 | Apr 2 | Apr 5 | Apr 8 | Apr 13 | Apr 17 | Apr 22 |
| 28°F | Mar 4 | Mar 11 | Mar 15 | Mar 20 | Mar 24 | Mar 29 | Apr 1 | Apr 4 | Apr 10 |
| 24°F | Feb 20 | Feb 27 | Mar 3 | Mar 7 | Mar 11 | Mar 14 | Mar 18 | Mar 23 | Mar 30 |
| 20°F | Jan 31 | Feb 12 | Feb 19 | Feb 23 | Feb 28 | Mar 3 | Mar 7 | Mar 11 | Mar 17 |
| 16°F98% of yrs | Jan 10 | Jan 24 | Jan 31 | Feb 7 | Feb 12 | Feb 19 | Feb 25 | Mar 2 | Mar 10 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 9 | Oct 15 | Oct 18 | Oct 21 | Oct 23 | Oct 26 | Oct 29 | Nov 1 | Nov 5 |
| 32°F | Oct 19 | Oct 23 | Oct 27 | Oct 30 | Nov 1 | Nov 4 | Nov 6 | Nov 10 | Nov 15 |
| 28°F | Oct 24 | Nov 1 | Nov 4 | Nov 6 | Nov 10 | Nov 13 | Nov 17 | Nov 21 | Nov 27 |
| 24°F | Nov 1 | Nov 7 | Nov 11 | Nov 15 | Nov 18 | Nov 22 | Nov 27 | Dec 1 | Dec 6 |
| 20°F | Nov 10 | Nov 15 | Nov 21 | Nov 25 | Nov 29 | Dec 3 | Dec 7 | Dec 13 | Dec 20 |
| 16°F98% of yrs | Nov 19 | Nov 27 | Dec 2 | Dec 8 | Dec 13 | Dec 18 | Dec 24 | Dec 31 | Jan 11 |
Freeze probabilities 1991–2020 at Hinton 7W Mesonet, 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 73047 →Compare Hinton with another place →
Weather by month in Hinton
July is the warmest month at Hinton 7W Mesonet, OK, averaging 95°F by day and 70°F at night; January is the coldest at 48°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 67% of years.
Warmth for growing adds up to 4,948 growing degree days a year (base 50°F), fewer than at 80% of the 114 Oklahoma stations. 37% of them (1,835) have built up by the end of June, and July adds the most, 1,001.
| Month | High °F | Low °F | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|
| Jan | 48 | 27 | 100% | 24 | 11 |
| Feb | 53 | 31 | 100% | 18 | 40 |
| Mar | 62 | 39 | 99% | 8 | 131 |
| Apr | 70 | 47 | 67% | 3 | 285 |
| May | 80 | 56 | 2% | <1 | 551 |
| Jun | 89 | 66 | 0% | 0 | 817 |
| Jul | 95 | 70 | 0% | 0 | 1001 |
| Aug | 94 | 69 | 0% | 0 | 976 |
| Sep | 84 | 61 | 0% | 0 | 677 |
| Oct | 73 | 49 | 45% | 1 | 355 |
| Nov | 60 | 37 | 99% | 9 | 91 |
| Dec | 50 | 28 | 100% | 21 | 13 |
Monthly normals 1991–2020 at Hinton 7W Mesonet, OK (1,617 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, Weatherford, OK, 21 miles west of Hinton, has a last frost 2 days earlier (April 3), a first frost 2 days later (November 3), a season 6 days longer.
When it snows in Hinton, Oklahoma
The first measurable snow (0.1 inch or more) in Hinton usually arrives around January 2, and the last of the season around February 4. Those are the middle dates across the winters of 1991–2020 at Lookeba 1 N, OK, 6.9 miles away: half of years saw snow earlier, half later. Snow fell in 90% of those winters. The last 32°F night of spring typically comes 60 days after the last snow.
Planting calendar for 73047
| 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 73047 is 9 miles from Hinton 7W Mesonet, OK, which stands at 1,617 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 73047 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.