USDA Hardiness Zone 8a
Frost Dates for 38901 — Grenada, Mississippi
NOAA 1991–2020 normals from Grenada, MS (237 ft), under a mile southwest.
Updated
In Grenada, the last spring frost (32°F) is around March 28 in half of years and has passed by April 14 in nine years out of ten. The first fall frost comes around November 4, as early as October 21 one year in ten, leaving a typical freeze-free season of 222 days (NOAA, Grenada, MS).
- Last spring frost
- March 28
- First fall frost
- November 4
- Growing season
- 222 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
- 33%
- Snow per year
- 1.1"
median, 1991–2020
median, 1991–2020
8 of 24 observed
NOAA normal
Frost risk by date in Grenada
Half of springs at Grenada, MS see their last 32°F night by March 28; only one in ten is past it by March 8, and one in ten still has one after April 14. Planting tender crops after April 4 leaves a 30% risk of a frost on them, after April 8 20%, and after April 14 10%. The 17 days between the even-odds date and the one-in-ten date is narrower than at 71% of the 96 Mississippi stations behind this site's ZIP pages.
In fall the first 32°F night comes by November 4 in half of years, as early as October 21 one year in ten, and holds off past November 21 one year in ten. A hard freeze of 28°F follows 11 days later, around November 15; in spring the one-in-ten date for 28°F is April 1, 13 days before the 32°F one. The freeze-free season lasts 222 days in a typical year, shorter than at 80% of the 96 Mississippi stations; it reaches 246 days one year in ten and falls short of 198 one year in ten. On average 71 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 9, and return around October 26. Nights of 24°F, cold enough to damage hardier plants, come in 100% of winters and 16°F in 80%.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Mar 23 | Mar 30 | Apr 3 | Apr 6 | Apr 9 | Apr 12 | Apr 16 | Apr 22 | Apr 27 |
| 32°F | Mar 8 | Mar 14 | Mar 19 | Mar 23 | Mar 28 | Apr 1 | Apr 4 | Apr 8 | Apr 14 |
| 28°F | Feb 22 | Feb 28 | Mar 3 | Mar 8 | Mar 12 | Mar 16 | Mar 20 | Mar 25 | Apr 1 |
| 24°F | Feb 1 | Feb 11 | Feb 17 | Feb 23 | Feb 27 | Mar 2 | Mar 6 | Mar 11 | Mar 18 |
| 20°F97% of yrs | Jan 14 | Jan 25 | Jan 31 | Feb 6 | Feb 12 | Feb 19 | Feb 26 | Mar 2 | Mar 8 |
| 16°F80% of yrs | Dec 31 | Jan 10 | Jan 16 | Jan 23 | Jan 30 | Feb 2 | Feb 9 | Feb 19 | Feb 28 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 13 | Oct 18 | Oct 21 | Oct 24 | Oct 26 | Oct 29 | Nov 1 | Nov 4 | Nov 8 |
| 32°F | Oct 21 | Oct 27 | Oct 30 | Nov 1 | Nov 4 | Nov 6 | Nov 9 | Nov 14 | Nov 21 |
| 28°F | Nov 1 | Nov 5 | Nov 8 | Nov 11 | Nov 15 | Nov 20 | Nov 24 | Dec 1 | Dec 6 |
| 24°F | Nov 8 | Nov 14 | Nov 19 | Nov 25 | Nov 30 | Dec 4 | Dec 10 | Dec 19 | Jan 1 |
| 20°F97% of yrs | Nov 19 | Nov 29 | Dec 5 | Dec 14 | Dec 22 | Dec 29 | Jan 2 | Jan 9 | Jan 20 |
| 16°F80% of yrs | Dec 6 | Dec 21 | Dec 28 | Jan 1 | Jan 5 | Jan 10 | Jan 15 | Jan 22 | Feb 2 |
Freeze probabilities 1991–2020 at Grenada, MS, 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 38901 →Compare Grenada with another place →
Weather by month in Grenada
July is the warmest month at Grenada, MS, averaging 92°F by day and 70°F at night; January is the coldest at 54°F and 31°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 40% of years.
Warmth for growing adds up to 5,453 growing degree days a year (base 50°F), fewer than at 74% of the 96 Mississippi stations. 40% of them (2,162) have built up by the end of June, and July adds the most, 958. Precipitation totals 61.6 inches a year, most in December (6.5") and least in August (3.6"); May to September bring 39% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 54 | 31 | 5.1 | 100% | 19 | 47 |
| Feb | 58 | 34 | 5.8 | 100% | 16 | 68 |
| Mar | 67 | 41 | 5.6 | 93% | 8 | 204 |
| Apr | 75 | 49 | 6.4 | 40% | 1 | 376 |
| May | 82 | 59 | 5.5 | 0% | 0 | 629 |
| Jun | 89 | 67 | 4.9 | 0% | 0 | 838 |
| Jul | 92 | 70 | 5.4 | 0% | 0 | 958 |
| Aug | 92 | 69 | 3.6 | 0% | 0 | 933 |
| Sep | 87 | 62 | 4.4 | 0% | 0 | 744 |
| Oct | 77 | 50 | 3.6 | 35% | 2 | 426 |
| Nov | 66 | 40 | 4.8 | 94% | 9 | 161 |
| Dec | 57 | 34 | 6.5 | 100% | 17 | 69 |
Monthly normals 1991–2020 at Grenada, MS (237 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, Winona 5 E, MS, 22 miles southeast of Grenada and 155 feet higher, has a last frost 10 days later (April 7), a first frost 6 days earlier (October 29), a season 19 days shorter.
When it snows in Grenada, Mississippi
Measurable snow is rare here: only 8 of 24 winters from 1991 to 2020 recorded 0.1 inch or more at Grenada, MS, 0.9 miles away, so there is no typical first-snow date to plan around.
Planting calendar for 38901
| When | What to do |
|---|---|
| January 17 – January 31 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| January 31 – February 14 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| February 28 – March 14 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| March 28 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by August 12 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by October 21 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| November 4 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 38901 is under a mile from Grenada, MS, which stands at 237 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 38901 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.
Frost dates across Mississippi →
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.