USDA Hardiness Zone 8a
Frost Dates for 76450 — Graham, Texas
NOAA 1991–2020 normals from Graham, TX (1,078 ft), 3 miles northeast.
Updated
In Graham, the last spring frost (32°F) is around April 1 in half of years and has passed by April 20 in nine years out of ten. The first fall frost comes around November 5, as early as October 23 one year in ten, leaving a typical freeze-free season of 220 days (NOAA, Graham, TX).
- Last spring frost
- April 1
- First fall frost
- November 5
- Growing season
- 220 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
- 14%
- Snow per year
- 0.4"
median, 1991–2020
median, 1991–2020
4 of 28 observed
NOAA normal
Frost risk by date in Graham
Half of springs at Graham, TX see their last 32°F night by April 1; only one in ten is past it by March 10, and one in ten still has one after April 20. Planting tender crops after April 7 leaves a 30% risk of a frost on them, after April 13 20%, and after April 20 10%. The 19 days between the even-odds date and the one-in-ten date is narrower than at 63% of the 339 Texas stations behind this site's ZIP pages.
In fall the first 32°F night comes by November 5 in half of years, as early as October 23 one year in ten, and holds off past November 20 one year in ten. A hard freeze of 28°F follows 9 days later, around November 14; in spring the one-in-ten date for 28°F is April 8, 12 days before the 32°F one. The freeze-free season lasts 220 days in a typical year, shorter than at 86% of the 339 Texas stations; it reaches 246 days one year in ten and falls short of 194 one year in ten. On average 74 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 13, and return around October 29. Nights of 24°F, cold enough to damage hardier plants, come in 100% of winters and 16°F in 78%.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Mar 25 | Apr 1 | Apr 5 | Apr 8 | Apr 13 | Apr 17 | Apr 20 | Apr 24 | Apr 28 |
| 32°F | Mar 10 | Mar 16 | Mar 22 | Mar 27 | Apr 1 | Apr 3 | Apr 7 | Apr 13 | Apr 20 |
| 28°F | Feb 25 | Mar 2 | Mar 7 | Mar 11 | Mar 15 | Mar 20 | Mar 26 | Apr 1 | Apr 8 |
| 24°F | Feb 9 | Feb 17 | Feb 23 | Feb 27 | Mar 1 | Mar 5 | Mar 9 | Mar 14 | Mar 23 |
| 20°F98% of yrs | Jan 15 | Jan 28 | Feb 4 | Feb 10 | Feb 15 | Feb 21 | Feb 26 | Mar 2 | Mar 7 |
| 16°F78% of yrs | Dec 23 | Jan 4 | Jan 17 | Jan 24 | Jan 30 | Feb 4 | Feb 10 | Feb 16 | Feb 27 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 15 | Oct 20 | Oct 23 | Oct 26 | Oct 29 | Nov 1 | Nov 3 | Nov 6 | Nov 10 |
| 32°F | Oct 23 | Oct 28 | Nov 1 | Nov 2 | Nov 5 | Nov 8 | Nov 11 | Nov 14 | Nov 20 |
| 28°F | Oct 31 | Nov 3 | Nov 7 | Nov 11 | Nov 14 | Nov 18 | Nov 22 | Nov 27 | Dec 2 |
| 24°F | Nov 6 | Nov 12 | Nov 17 | Nov 21 | Nov 26 | Nov 29 | Dec 3 | Dec 10 | Dec 18 |
| 20°F98% of yrs | Nov 16 | Nov 25 | Nov 30 | Dec 4 | Dec 11 | Dec 18 | Dec 24 | Jan 1 | Jan 12 |
| 16°F78% of yrs | Nov 29 | Dec 7 | Dec 15 | Dec 22 | Dec 28 | Jan 3 | Jan 9 | Jan 20 | Feb 2 |
Freeze probabilities 1991–2020 at Graham, TX, 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 76450 →Compare Graham with another place →
Weather by month in Graham
July is the warmest month at Graham, TX, averaging 98°F by day and 73°F at night; January is the coldest at 57°F and 30°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 50% of years.
Warmth for growing adds up to 6,093 growing degree days a year (base 50°F), fewer than at 67% of the 351 Texas stations. 39% of them (2,394) have built up by the end of June, and July adds the most, 1,093. Precipitation totals 30.0 inches a year, most in May (3.8") and least in January (1.2"); May to September bring 50% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 57 | 30 | 1.2 | 100% | 22 | 42 |
| Feb | 62 | 33 | 1.7 | 100% | 16 | 78 |
| Mar | 70 | 41 | 3.0 | 93% | 7 | 233 |
| Apr | 78 | 49 | 2.1 | 50% | 2 | 416 |
| May | 85 | 60 | 3.8 | 0% | 0 | 693 |
| Jun | 93 | 69 | 3.8 | 0% | 0 | 931 |
| Jul | 98 | 73 | 2.0 | 0% | 0 | 1093 |
| Aug | 97 | 72 | 2.2 | 0% | 0 | 1075 |
| Sep | 90 | 64 | 3.1 | 0% | 0 | 802 |
| Oct | 80 | 51 | 3.7 | 30% | 1 | 484 |
| Nov | 68 | 39 | 1.6 | 98% | 9 | 182 |
| Dec | 59 | 32 | 1.8 | 100% | 18 | 63 |
Monthly normals 1991–2020 at Graham, TX (1,078 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, Olney, TX, 22 miles northwest of Graham, has a last frost 1 day earlier (March 31), a first frost 3 days later (November 8), a season 2 days longer.
When it snows in Graham, Texas
Measurable snow is rare here: only 4 of 28 winters from 1991 to 2020 recorded 0.1 inch or more at Woodson, TX, 26.6 miles away, so there is no typical first-snow date to plan around.
Planting calendar for 76450
| When | What to do |
|---|---|
| January 21 – February 4 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| February 4 – February 18 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| March 4 – March 18 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| April 1 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by August 13 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by October 22 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| November 5 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 76450 is 3 miles from Graham, TX, which stands at 1,078 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 76450 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.