Frost Dates for 71238 — Eros, Louisiana

Half of springs at Calhoun Rsch Stn, LA see their last 32°F night by March 28; only one in ten is past it by March 4, and one in ten still has one after April 14. Planting tender crops after April 4 leaves a 30% risk of a frost on them, after April 8 20%, and after April 14 10%. The 17 days between the even-odds date and the one-in-ten date is narrower than at 93% of the 88 Louisiana stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 5 in half of years, as early as October 24 one year in ten, and holds off past November 23 one year in ten. A hard freeze of 28°F follows 13 days later, around November 18; in spring the one-in-ten date for 28°F is April 1, 13 days before the 32°F one. The freeze-free season lasts 224 days in a typical year, shorter than at 99% of the 88 Louisiana stations; it reaches 248 days one year in ten and falls short of 200 one year in ten. On average 57 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 11 days longer, to about April 8, and return around October 26. Nights of 24°F, cold enough to damage hardier plants, come in 100% of winters and 16°F in 62%.

July is the warmest month at Calhoun Rsch Stn, LA, averaging 93°F by day and 70°F at night; January is the coldest at 57°F and 33°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 88% of years and April still brings one in 38% of years.

Warmth for growing adds up to 5,729 growing degree days a year (base 50°F), fewer than at 97% of the 88 Louisiana stations. 40% of them (2,302) have built up by the end of June, and July adds the most, 980. Precipitation totals 57.7 inches a year, most in January (5.7") and least in August (3.5"); May to September bring 36% of it.

The nearest other station, Ruston La Tech, LA, 19 miles northwest of Eros and 175 feet higher, has a last frost 17 days earlier (March 11), a first frost 11 days later (November 16), a season 24 days longer.

Measurable snow is rare here: only 4 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Calhoun Rsch Stn, LA, 10.6 miles away, so there is no typical first-snow date to plan around.

ZIP 71238 is 11 miles from Calhoun Rsch Stn, LA, which stands at 120 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 71225 (Calhoun). The 2023 USDA Plant Hardiness Zone Map lists ZIP 71238 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.