USDA Hardiness Zone 8a
Frost Dates for 75092 — Sherman, Texas
NOAA 1991–2020 normals from Sherman, TX (760 ft), 4 miles north.
Updated
In Sherman, the last spring frost (32°F) is around March 14 in half of years and has passed by April 1 in nine years out of ten. The first fall frost comes around November 19, as early as November 2 one year in ten, leaving a typical freeze-free season of 250 days (NOAA, Sherman, TX).
- Last spring frost
- March 14
- First fall frost
- November 19
- Growing season
- 250 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
- 35%
- Snow per year
- —
median, 1991–2020
median, 1991–2020
7 of 20 observed
NOAA normal
Frost risk by date in Sherman
Half of springs at Sherman, TX see their last 32°F night by March 14; only one in ten is past it by February 25, and one in ten still has one after April 1. Planting tender crops after March 22 leaves a 30% risk of a frost on them, after March 27 20%, and after April 1 10%. The 18 days between the even-odds date and the one-in-ten date is narrower than at 75% of the 339 Texas stations behind this site's ZIP pages.
In fall the first 32°F night comes by November 19 in half of years, as early as November 2 one year in ten, and holds off past December 6 one year in ten. A hard freeze of 28°F follows 11 days later, around November 30; in spring the one-in-ten date for 28°F is March 21, 11 days before the 32°F one. The freeze-free season lasts 250 days in a typical year, longer than at 52% of the 339 Texas stations; it reaches 276 days one year in ten and falls short of 225 one year in ten. On average 43 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 14 days longer, to about March 28, and return around November 9. Nights of 24°F, cold enough to damage hardier plants, come in 100% of winters and 16°F in 67%.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Mar 8 | Mar 15 | Mar 19 | Mar 24 | Mar 28 | Mar 31 | Apr 4 | Apr 8 | Apr 15 |
| 32°F | Feb 25 | Mar 2 | Mar 6 | Mar 10 | Mar 14 | Mar 18 | Mar 22 | Mar 27 | Apr 1 |
| 28°F | Feb 10 | Feb 18 | Feb 24 | Feb 28 | Mar 2 | Mar 6 | Mar 10 | Mar 14 | Mar 21 |
| 24°F | Jan 22 | Jan 31 | Feb 8 | Feb 14 | Feb 20 | Feb 25 | Mar 1 | Mar 5 | Mar 13 |
| 20°F93% of yrs | Jan 2 | Jan 16 | Jan 25 | Jan 31 | Feb 6 | Feb 12 | Feb 18 | Feb 25 | Mar 4 |
| 16°F67% of yrs | Dec 22 | Jan 1 | Jan 10 | Jan 17 | Jan 25 | Feb 1 | Feb 7 | Feb 14 | Feb 24 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 26 | Oct 31 | Nov 3 | Nov 6 | Nov 9 | Nov 12 | Nov 15 | Nov 20 | Nov 24 |
| 32°F | Nov 2 | Nov 8 | Nov 12 | Nov 16 | Nov 19 | Nov 22 | Nov 26 | Dec 1 | Dec 6 |
| 28°F | Nov 11 | Nov 18 | Nov 22 | Nov 26 | Nov 30 | Dec 3 | Dec 7 | Dec 12 | Dec 20 |
| 24°F | Nov 23 | Nov 30 | Dec 4 | Dec 8 | Dec 14 | Dec 21 | Dec 26 | Jan 1 | Jan 8 |
| 20°F93% of yrs | Dec 4 | Dec 10 | Dec 17 | Dec 24 | Dec 31 | Jan 3 | Jan 9 | Jan 18 | Feb 1 |
| 16°F67% of yrs | Dec 11 | Dec 18 | Dec 26 | Jan 1 | Jan 5 | Jan 12 | Jan 18 | Feb 1 | Feb 9 |
Freeze probabilities 1991–2020 at Sherman, 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 75092 →Compare Sherman with another place →
Weather by month in Sherman
July is the warmest month at Sherman, TX, averaging 93°F by day and 74°F at night; January is the coldest at 53°F and 34°F. A freezing night is all but certain in every month from December to February (a 90% chance or more). From May to October the chance of a 32°F night stays under 10% each month. In spring, March still brings one in 81% of years and April still brings one in 11% of years.
Warmth for growing adds up to 5,765 growing degree days a year (base 50°F), fewer than at 83% of the 351 Texas stations. 39% of them (2,238) have built up by the end of June, and July adds the most, 1,023. Precipitation totals 44.3 inches a year, most in May (5.5") and least in January (2.5"); May to September bring 43% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 53 | 34 | 2.5 | 100% | 15 | 44 |
| Feb | 57 | 37 | 2.8 | 98% | 10 | 78 |
| Mar | 65 | 45 | 4.0 | 81% | 3 | 215 |
| Apr | 73 | 53 | 3.9 | 11% | <1 | 388 |
| May | 80 | 62 | 5.5 | 0% | 0 | 645 |
| Jun | 88 | 70 | 4.5 | 0% | 0 | 868 |
| Jul | 93 | 74 | 2.9 | 0% | 0 | 1023 |
| Aug | 93 | 73 | 2.9 | 0% | 0 | 1018 |
| Sep | 85 | 66 | 3.4 | 0% | 0 | 772 |
| Oct | 75 | 55 | 4.8 | 8% | <1 | 477 |
| Nov | 63 | 44 | 3.5 | 78% | 3 | 178 |
| Dec | 54 | 36 | 3.6 | 100% | 12 | 58 |
Monthly normals 1991–2020 at Sherman, TX (760 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, Gainesville 5 ENE, TX, 23 miles west of Sherman, has a last frost 5 days later (March 19), a first frost 5 days earlier (November 14), a season 8 days shorter.
When it snows in Sherman, Texas
Measurable snow is rare here: only 7 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Sherman, TX, 3.8 miles away, so there is no typical first-snow date to plan around.
Planting calendar for 75092
| When | What to do |
|---|---|
| January 3 – January 17 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| January 17 – January 31 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| February 14 – February 28 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| March 14 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by August 27 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by November 5 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| November 19 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 75092 is 4 miles from Sherman, TX, which stands at 760 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 6 other ZIP codes share the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 75092 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.