Frost Dates for 39350 — Philadelphia, Mississippi

Half of springs at Philadelphia 1 WSW, MS 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 9. Planting tender crops after March 30 leaves a 30% risk of a frost on them, after April 3 20%, and after April 9 10%. The 20 days between the even-odds date and the one-in-ten date is wider than at 64% of the 96 Mississippi stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 9 in half of years, as early as October 26 one year in ten, and holds off past November 28 one year in ten. A hard freeze of 28°F follows 12 days later, around November 21; in spring the one-in-ten date for 28°F is March 25, 15 days before the 32°F one. The freeze-free season lasts 235 days in a typical year, shorter than at 59% of the 96 Mississippi stations; it reaches 261 days one year in ten and falls short of 209 one year in ten. On average 49 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 3, and return around October 30. Nights of 24°F, cold enough to damage hardier plants, come in 99% of winters and 16°F in 54%.

July is the warmest month at Philadelphia 1 WSW, MS, averaging 91°F by day and 71°F at night; January is the coldest at 56°F and 35°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 25% of years.

Warmth for growing adds up to 5,807 growing degree days a year (base 50°F), fewer than at 52% of the 96 Mississippi stations. 41% of them (2,362) have built up by the end of June, and July adds the most, 963.

The nearest other station, Carthage, MS, 24 miles west of Philadelphia, has a last frost 1 day earlier (March 19), a first frost 2 days earlier (November 7), a season 2 days shorter.

Measurable snow is rare here: only 5 of 28 winters from 1991 to 2020 recorded 0.1 inch or more at Philadelphia 1 WSW, MS, 0.5 miles away, so there is no typical first-snow date to plan around.

ZIP 39350 is under a mile from Philadelphia 1 WSW, MS, which stands at 413 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 39350 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.