USDA Hardiness Zone 8b
Frost Dates for 75670 — Marshall, Texas
NOAA 1991–2020 normals from Marshall, TX (302 ft), 5 miles southeast.
Updated
In Marshall, the last spring frost (32°F) is around March 20 in half of years and has passed by April 7 in nine years out of ten. The first fall frost comes around November 11, as early as October 27 one year in ten, leaving a typical freeze-free season of 233 days (NOAA, Marshall, TX).
- Last spring frost
- March 20
- First fall frost
- November 11
- Growing season
- 233 days
- Hardiness zone
- 8b
50% probability
50% probability
freeze-free, 50%
15 to 20°F (-9.4 to -6.7°C) coldest night
- First snow
- Rare
- Last snow
- Rare
- Winters with snow
- 37%
- Snow per year
- 0.8"
median, 1991–2020
median, 1991–2020
11 of 30 observed
NOAA normal
Frost risk by date in Marshall
Half of springs at Marshall, TX see their last 32°F night by March 20; only one in ten is past it by February 28, and one in ten still has one after April 7. Planting tender crops after March 31 leaves a 30% risk of a frost on them, after April 3 20%, and after April 7 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 11 in half of years, as early as October 27 one year in ten, and holds off past November 30 one year in ten. A hard freeze of 28°F follows 13 days later, around November 24; in spring the one-in-ten date for 28°F is March 24, 14 days before the 32°F one. The freeze-free season lasts 233 days in a typical year, shorter than at 72% of the 339 Texas stations; it reaches 261 days one year in ten and falls short of 208 one year in ten. On average 39 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 15 days longer, to about April 4, and return around November 1. Nights of 24°F, cold enough to damage hardier plants, come in 100% of winters and 16°F in 45%.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Mar 15 | Mar 22 | Mar 28 | Apr 1 | Apr 4 | Apr 7 | Apr 10 | Apr 15 | Apr 22 |
| 32°F | Feb 28 | Mar 6 | Mar 12 | Mar 16 | Mar 20 | Mar 25 | Mar 31 | Apr 3 | Apr 7 |
| 28°F | Feb 12 | Feb 20 | Feb 26 | Mar 1 | Mar 5 | Mar 10 | Mar 14 | Mar 18 | Mar 24 |
| 24°F | Jan 20 | Jan 30 | Feb 4 | Feb 13 | Feb 19 | Feb 25 | Mar 1 | Mar 6 | Mar 14 |
| 20°F87% of yrs | Dec 29 | Jan 7 | Jan 15 | Jan 24 | Jan 30 | Feb 3 | Feb 11 | Feb 21 | Mar 2 |
| 16°F45% of yrs | too rare for a date | ||||||||
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 19 | Oct 23 | Oct 27 | Oct 30 | Nov 1 | Nov 4 | Nov 6 | Nov 11 | Nov 16 |
| 32°F | Oct 27 | Nov 1 | Nov 4 | Nov 7 | Nov 11 | Nov 14 | Nov 19 | Nov 23 | Nov 30 |
| 28°F | Nov 4 | Nov 10 | Nov 15 | Nov 21 | Nov 24 | Nov 28 | Dec 1 | Dec 5 | Dec 12 |
| 24°F | Nov 14 | Nov 21 | Nov 28 | Dec 2 | Dec 5 | Dec 10 | Dec 18 | Dec 26 | Jan 5 |
| 20°F87% of yrs | Nov 28 | Dec 7 | Dec 13 | Dec 22 | Dec 28 | Jan 2 | Jan 7 | Jan 15 | Jan 30 |
| 16°F45% of yrs | too rare for a date | ||||||||
Freeze probabilities 1991–2020 at Marshall, 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 75670 →Compare Marshall with another place →
Weather by month in Marshall
July is the warmest month at Marshall, TX, averaging 94°F by day and 71°F at night; January is the coldest at 57°F and 33°F. A freezing night is all but certain in every month from December to February (a 90% chance or more). From May to September the chance of a 32°F night stays under 10% each month. In spring, March still brings one in 85% of years and April still brings one in 26% of years.
Warmth for growing adds up to 5,876 growing degree days a year (base 50°F), fewer than at 78% of the 351 Texas stations. 40% of them (2,348) have built up by the end of June, and July adds the most, 1,003. Precipitation totals 51.6 inches a year, most in March (5.1") and least in August (3.1"); May to September bring 38% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 57 | 33 | 4.2 | 100% | 13 | 61 |
| Feb | 62 | 37 | 4.0 | 99% | 7 | 96 |
| Mar | 69 | 44 | 5.1 | 85% | 3 | 237 |
| Apr | 76 | 51 | 4.8 | 26% | <1 | 411 |
| May | 83 | 60 | 4.6 | 0% | 0 | 673 |
| Jun | 90 | 68 | 4.7 | 0% | 0 | 870 |
| Jul | 94 | 71 | 3.7 | 0% | 0 | 1003 |
| Aug | 94 | 70 | 3.1 | 0% | 0 | 1000 |
| Sep | 88 | 64 | 3.5 | 0% | 0 | 781 |
| Oct | 78 | 52 | 4.7 | 17% | <1 | 471 |
| Nov | 67 | 42 | 4.3 | 88% | 4 | 195 |
| Dec | 59 | 35 | 4.9 | 100% | 11 | 79 |
Monthly normals 1991–2020 at Marshall, TX (302 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, Hallsville 4 S, TX, 14 miles southwest of Marshall, has a last frost 5 days earlier (March 15), a first frost 4 days later (November 15), a season 12 days longer.
When it snows in Marshall, Texas
Measurable snow is rare here: only 11 of 30 winters from 1991 to 2020 recorded 0.1 inch or more at Marshall, TX, 5 miles away, so there is no typical first-snow date to plan around.
Planting calendar for 75670
| When | What to do |
|---|---|
| January 9 – January 23 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| January 23 – February 6 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| February 20 – March 6 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| March 20 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by August 19 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by October 28 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| November 11 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 75670 is 5 miles from Marshall, TX, which stands at 302 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 2 other ZIP codes share the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 75670 in zone 8b, the band where the coldest night of the year averaged 15 to 20°F (-9.4 to -6.7°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.