USDA Hardiness Zone 8b
Frost Dates for 39645 — Liberty, Mississippi
NOAA 1991–2020 normals from Liberty, MS (328 ft), 2 miles northwest.
Updated
In Liberty, the last spring frost (32°F) is around March 25 in half of years and has passed by April 15 in nine years out of ten. The first fall frost comes around November 8, as early as October 25 one year in ten, leaving a typical freeze-free season of 230 days (NOAA, Liberty, MS).
- Last spring frost
- March 25
- First fall frost
- November 8
- Growing season
- 230 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
- 0%
- Snow per year
- —
median, 1991–2020
median, 1991–2020
0 of 18 observed
NOAA normal
Frost risk by date in Liberty
Half of springs at Liberty, MS see their last 32°F night by March 25; only one in ten is past it by February 26, and one in ten still has one after April 15. Planting tender crops after April 4 leaves a 30% risk of a frost on them, after April 8 20%, and after April 15 10%. The 21 days between the even-odds date and the one-in-ten date is wider than at 73% of the 96 Mississippi stations behind this site's ZIP pages, so a fixed calendar date is a gamble here.
In fall the first 32°F night comes by November 8 in half of years, as early as October 25 one year in ten, and holds off past November 25 one year in ten. A hard freeze of 28°F follows 12 days later, around November 20; in spring the one-in-ten date for 28°F is April 1, 14 days before the 32°F one. The freeze-free season lasts 230 days in a typical year, shorter than at 69% of the 96 Mississippi stations; it reaches 260 days one year in ten and falls short of 203 one year in ten. On average 47 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 April 8, and return around November 1. Nights of 24°F, cold enough to damage hardier plants, come in 99% of winters and 16°F in 58%.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Mar 19 | Mar 27 | Apr 1 | Apr 5 | Apr 8 | Apr 10 | Apr 14 | Apr 19 | Apr 24 |
| 32°F | Feb 26 | Mar 5 | Mar 14 | Mar 18 | Mar 25 | Mar 31 | Apr 4 | Apr 8 | Apr 15 |
| 28°F | Feb 9 | Feb 20 | Feb 26 | Mar 2 | Mar 6 | Mar 11 | Mar 16 | Mar 23 | Apr 1 |
| 24°F99% of yrs | Jan 17 | Jan 31 | Feb 7 | Feb 14 | Feb 21 | Feb 26 | Mar 1 | Mar 6 | Mar 13 |
| 20°F87% of yrs | Dec 27 | Jan 11 | Jan 23 | Jan 31 | Feb 4 | Feb 12 | Feb 19 | Feb 26 | Mar 3 |
| 16°F58% of yrs | Dec 24 | Jan 4 | Jan 12 | Jan 20 | Jan 28 | Feb 1 | Feb 10 | Feb 18 | Feb 25 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 18 | Oct 22 | Oct 26 | Oct 30 | Nov 1 | Nov 4 | Nov 6 | Nov 9 | Nov 15 |
| 32°F | Oct 25 | Oct 31 | Nov 3 | Nov 6 | Nov 8 | Nov 11 | Nov 15 | Nov 19 | Nov 25 |
| 28°F | Nov 5 | Nov 8 | Nov 12 | Nov 16 | Nov 20 | Nov 24 | Nov 28 | Dec 2 | Dec 12 |
| 24°F99% of yrs | Nov 12 | Nov 19 | Nov 26 | Dec 1 | Dec 4 | Dec 8 | Dec 17 | Dec 30 | Jan 9 |
| 20°F87% of yrs | Nov 25 | Dec 2 | Dec 8 | Dec 16 | Dec 26 | Jan 1 | Jan 8 | Jan 18 | Feb 1 |
| 16°F58% of yrs | Dec 9 | Dec 19 | Dec 28 | Jan 1 | Jan 8 | Jan 14 | Jan 22 | Feb 1 | Feb 6 |
Freeze probabilities 1991–2020 at Liberty, 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 39645 →Compare Liberty with another place →
Weather by month in Liberty
August is the warmest month at Liberty, MS, averaging 92°F by day and 69°F at night; January is the coldest at 60°F and 37°F. A freezing night is all but certain in every month from November 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 81% of years and April still brings one in 38% of years.
Warmth for growing adds up to 6,010 growing degree days a year (base 50°F), more than at 60% of the 96 Mississippi stations. 41% of them (2,471) have built up by the end of June, and August adds the most, 945. Precipitation totals 61.8 inches a year, most in January (6.8") and least in September (3.6"); May to September bring 40% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 60 | 37 | 6.8 | 99% | 13 | 103 |
| Feb | 64 | 38 | 5.7 | 96% | 10 | 114 |
| Mar | 72 | 45 | 5.8 | 81% | 4 | 286 |
| Apr | 77 | 50 | 4.9 | 38% | 1 | 414 |
| May | 84 | 61 | 5.3 | 0% | 0 | 693 |
| Jun | 90 | 67 | 4.8 | 0% | 0 | 862 |
| Jul | 91 | 70 | 5.8 | 0% | 0 | 941 |
| Aug | 92 | 69 | 5.1 | 0% | 0 | 945 |
| Sep | 88 | 64 | 3.6 | 0% | 0 | 783 |
| Oct | 81 | 53 | 4.1 | 20% | 1 | 522 |
| Nov | 70 | 42 | 4.3 | 92% | 6 | 226 |
| Dec | 63 | 38 | 5.6 | 96% | 13 | 122 |
Monthly normals 1991–2020 at Liberty, MS (328 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, Mccomb/Pike Co/John E Lewis Airport, MS, 20 miles east of Liberty, has a last frost 14 days earlier (March 11), a first frost 10 days later (November 18), a season 23 days longer.
When it snows in Liberty, Mississippi
Measurable snow is rare here: only 0 of 18 winters from 1991 to 2020 recorded 0.1 inch or more at Liberty, MS, 1.7 miles away, so there is no typical first-snow date to plan around.
Planting calendar for 39645
| When | What to do |
|---|---|
| January 14 – January 28 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| January 28 – February 11 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| February 25 – March 11 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| March 25 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by August 16 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by October 25 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| November 8 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 39645 is 2 miles from Liberty, MS, which stands at 328 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 39645 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.
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.