Frost Dates for 71033 — Greenwood, Louisiana

Half of springs at Shreveport WFO, LA see their last 32°F night by March 6; only one in ten is past it by February 13, and one in ten still has one after March 29. Planting tender crops after March 15 leaves a 30% risk of a frost on them, after March 20 20%, and after March 29 10%. The 23 days between the even-odds date and the one-in-ten date is wider than at 52% of the 88 Louisiana 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 19 in half of years, as early as November 2 one year in ten, and holds off past December 8 one year in ten. A hard freeze of 28°F follows 14 days later, around December 3; in spring the one-in-ten date for 28°F is March 14, 15 days before the 32°F one. The freeze-free season lasts 257 days in a typical year, shorter than at 64% of the 88 Louisiana stations; it reaches 285 days one year in ten and falls short of 229 one year in ten. On average 27 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 19 days longer, to about March 25, and return around November 8. Nights of 24°F, cold enough to damage hardier plants, come in 92% of winters and 16°F in 23%.

August is the warmest month at Shreveport WFO, LA, averaging 93°F by day and 73°F at night; January is the coldest at 56°F and 37°F. A freezing night is all but certain in every month from December to February (a 90% chance or more). From April to October the chance of a 32°F night stays under 10% each month. In spring, March still brings one in 62% of years.

Warmth for growing adds up to 6,145 growing degree days a year (base 50°F), fewer than at 80% of the 88 Louisiana stations. 41% of them (2,491) have built up by the end of June, and August adds the most, 1,024. Precipitation totals 52.9 inches a year, most in April (5.2") and least in August (3.0"); May to September bring 37% of it.

The nearest other station, Shreveport, LA, 9 miles east of Greenwood, has a last frost 3 days later (March 9), a first frost 1 day earlier (November 18), a season 2 days shorter.

Measurable snow is rare here: only 4 of 15 winters from 1991 to 2020 recorded 0.1 inch or more at Greenwood Fire Twr, LA, 2.5 miles away, so there is no typical first-snow date to plan around.

ZIP 71033 is 9 miles from Shreveport WFO, LA, which stands at 274 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 2 other ZIP codes share the station; its figures are presented in full for 71109 (Shreveport). The 2023 USDA Plant Hardiness Zone Map lists ZIP 71033 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.