Frost Dates for 71103 — Shreveport, Louisiana

Half of springs at Shreveport Dwtn Airport, LA see their last 32°F night by February 28; only one in ten is past it by February 4, and one in ten still has one after March 19. Planting tender crops after March 7 leaves a 30% risk of a frost on them, after March 12 20%, and after March 19 10%. The 19 days between the even-odds date and the one-in-ten date is narrower than at 78% of the 88 Louisiana stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 24 in half of years, as early as November 7 one year in ten, and holds off past December 14 one year in ten. A hard freeze of 28°F follows 16 days later, around December 10; in spring the one-in-ten date for 28°F is March 7, 12 days before the 32°F one. The freeze-free season lasts 268 days in a typical year, longer than at 50% of the 88 Louisiana stations; it reaches 298 days one year in ten and falls short of 241 one year in ten. On average 29 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 March 14, and return around November 12. Nights of 24°F, cold enough to damage hardier plants, come in 81% of winters and 16°F in 8%.

July is the warmest month at Shreveport Dwtn Airport, LA, averaging 95°F by day and 76°F at night; January is the coldest at 59°F and 39°F. A freezing night is all but certain in every month from December to January (a 90% chance or more). From April to October the chance of a 32°F night stays under 10% each month. In spring, February still brings one in 86% of years and March still brings one in 48% of years.

Warmth for growing adds up to 6,810 growing degree days a year (base 50°F), more than at 66% of the 88 Louisiana stations. 41% of them (2,822) have built up by the end of June, and July adds the most, 1,094. Precipitation totals 49.1 inches a year, most in December (4.8") and least in August (2.7"); May to September bring 36% of it.

The nearest other station, Shreveport WFO, LA, 5 miles southwest of Shreveport, has a last frost 6 days later (March 6), a first frost 5 days earlier (November 19), a season 11 days shorter.

Measurable snow is rare here: only 2 of 24 winters from 1991 to 2020 recorded 0.1 inch or more at Shreveport Dwtn, LA, 2.2 miles away, so there is no typical first-snow date to plan around.

ZIP 71103 is 4 miles from Shreveport Dwtn Airport, LA, which stands at 179 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 4 other ZIP codes share the station; its figures are presented in full for 71111 (Bossier City). The 2023 USDA Plant Hardiness Zone Map lists ZIP 71103 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.