USDA Hardiness Zone 8a
Frost Dates for 38846 — Glen, Mississippi
NOAA 1991–2020 normals from Corinth 7 SW, MS (385 ft), 13 miles west.
Updated
In Glen, the last spring frost (32°F) is around April 2 in half of years and has passed by April 17 in nine years out of ten. The first fall frost comes around November 1, as early as October 20 one year in ten, leaving a typical freeze-free season of 213 days (NOAA, Corinth 7 SW, MS).
- Last spring frost
- April 2
- First fall frost
- November 1
- Growing season
- 213 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
- 29%
- Snow per year
- 0.7"
median, 1991–2020
median, 1991–2020
7 of 24 observed
NOAA normal
Frost risk by date in Glen
Half of springs at Corinth 7 SW, MS see their last 32°F night by April 2; only one in ten is past it by March 16, and one in ten still has one after April 17. Planting tender crops after April 7 leaves a 30% risk of a frost on them, after April 11 20%, and after April 17 10%. The 15 days between the even-odds date and the one-in-ten date is narrower than at 94% of the 96 Mississippi stations behind this site's ZIP pages.
In fall the first 32°F night comes by November 1 in half of years, as early as October 20 one year in ten, and holds off past November 15 one year in ten. A hard freeze of 28°F follows 10 days later, around November 11; in spring the one-in-ten date for 28°F is April 6, 11 days before the 32°F one. The freeze-free season lasts 213 days in a typical year, shorter than at 92% of the 96 Mississippi stations; it reaches 235 days one year in ten and falls short of 194 one year in ten. On average 73 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 9 days longer, to about April 11, and return around October 24. Nights of 24°F, cold enough to damage hardier plants, come in 100% of winters and 16°F in 89%.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Mar 29 | Apr 2 | Apr 5 | Apr 8 | Apr 11 | Apr 14 | Apr 18 | Apr 21 | Apr 27 |
| 32°F | Mar 16 | Mar 22 | Mar 26 | Mar 30 | Apr 2 | Apr 4 | Apr 7 | Apr 11 | Apr 17 |
| 28°F | Feb 26 | Mar 5 | Mar 12 | Mar 16 | Mar 20 | Mar 25 | Mar 28 | Apr 1 | Apr 6 |
| 24°F | Feb 8 | Feb 18 | Feb 24 | Feb 28 | Mar 4 | Mar 9 | Mar 14 | Mar 18 | Mar 24 |
| 20°F99% of yrs | Jan 19 | Jan 30 | Feb 4 | Feb 11 | Feb 17 | Feb 23 | Feb 28 | Mar 5 | Mar 15 |
| 16°F89% of yrs | Dec 31 | Jan 11 | Jan 20 | Jan 27 | Jan 31 | Feb 4 | Feb 12 | Feb 19 | Mar 1 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 11 | Oct 16 | Oct 19 | Oct 22 | Oct 24 | Oct 26 | Oct 29 | Nov 1 | Nov 4 |
| 32°F | Oct 20 | Oct 24 | Oct 27 | Oct 30 | Nov 1 | Nov 3 | Nov 5 | Nov 9 | Nov 15 |
| 28°F | Oct 30 | Nov 2 | Nov 5 | Nov 8 | Nov 11 | Nov 15 | Nov 19 | Nov 24 | Dec 1 |
| 24°F | Nov 5 | Nov 9 | Nov 14 | Nov 18 | Nov 23 | Nov 28 | Dec 1 | Dec 6 | Dec 19 |
| 20°F99% of yrs | Nov 13 | Nov 23 | Dec 1 | Dec 4 | Dec 9 | Dec 17 | Dec 25 | Jan 1 | Jan 11 |
| 16°F89% of yrs | Dec 2 | Dec 9 | Dec 21 | Dec 27 | Jan 1 | Jan 4 | Jan 10 | Jan 18 | Feb 1 |
Freeze probabilities 1991–2020 at Corinth 7 SW, 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 38846 →Compare Glen with another place →
Weather by month in Glen
July is the warmest month at Corinth 7 SW, MS, averaging 90°F by day and 70°F at night; January is the coldest at 49°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 55% of years.
Warmth for growing adds up to 4,963 growing degree days a year (base 50°F), fewer than at 91% of the 96 Mississippi stations. 39% of them (1,956) have built up by the end of June, and July adds the most, 925. Precipitation totals 58.8 inches a year, most in December (6.3") 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 | 49 | 30 | 4.9 | 100% | 20 | 32 |
| Feb | 54 | 34 | 5.0 | 100% | 15 | 51 |
| Mar | 63 | 40 | 5.4 | 96% | 8 | 153 |
| Apr | 73 | 48 | 5.5 | 55% | 1 | 332 |
| May | 80 | 58 | 5.7 | 0% | 0 | 595 |
| Jun | 87 | 66 | 5.0 | 0% | 0 | 793 |
| Jul | 90 | 70 | 4.6 | 0% | 0 | 925 |
| Aug | 90 | 68 | 3.6 | 0% | 0 | 894 |
| Sep | 85 | 61 | 4.1 | 0% | 0 | 675 |
| Oct | 74 | 48 | 4.3 | 47% | 2 | 356 |
| Nov | 61 | 38 | 4.4 | 98% | 11 | 110 |
| Dec | 52 | 33 | 6.3 | 100% | 17 | 48 |
Monthly normals 1991–2020 at Corinth 7 SW, MS (385 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, Iuka, MS, 13 miles southeast of Glen and 215 feet higher, has a last frost 7 days later (April 9), a first frost 4 days earlier (October 28), a season 10 days shorter.
When it snows in Glen, Mississippi
Measurable snow is rare here: only 7 of 24 winters from 1991 to 2020 recorded 0.1 inch or more at Corinth 7 SW, MS, 12.6 miles away, so there is no typical first-snow date to plan around.
Planting calendar for 38846
| When | What to do |
|---|---|
| January 22 – February 5 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| February 5 – February 19 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| March 5 – March 19 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| April 2 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by August 9 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by October 18 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| November 1 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 38846 is 13 miles from Corinth 7 SW, MS, which stands at 385 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 3 other ZIP codes share the station; its figures are presented in full for 38834 (Corinth). The 2023 USDA Plant Hardiness Zone Map lists ZIP 38846 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.