Frost Dates for 71291 — West Monroe, Louisiana

Half of springs at Monroe Regional Airport, LA see their last 32°F night by March 8; only one in ten is past it by February 16, and one in ten still has one after March 25. Planting tender crops after March 14 leaves a 30% risk of a frost on them, after March 19 20%, and after March 25 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 15 in half of years, as early as November 1 one year in ten, and holds off past December 3 one year in ten. A hard freeze of 28°F follows 14 days later, around November 29; in spring the one-in-ten date for 28°F is March 13, 12 days before the 32°F one. The freeze-free season lasts 253 days in a typical year, shorter than at 73% of the 88 Louisiana stations; it reaches 280 days one year in ten and falls short of 230 one year in ten. On average 33 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 15 days longer, to about March 23, and return around November 3. Nights of 24°F, cold enough to damage hardier plants, come in 94% of winters and 16°F in 23%.

July is the warmest month at Monroe Regional Airport, LA, averaging 93°F by day and 73°F at night; January is the coldest at 57°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 66% of years.

Warmth for growing adds up to 6,264 growing degree days a year (base 50°F), fewer than at 70% of the 88 Louisiana stations. 42% of them (2,600) have built up by the end of June, and July adds the most, 1,018. Precipitation totals 55.3 inches a year, most in April (5.8") and least in August (3.6"); May to September bring 36% of it.

The nearest other station, Monroe Delta Cc, LA, 8 miles east of West Monroe, has a last frost 1 day later (March 9), a first frost 1 day earlier (November 14), a season 5 days shorter.

Measurable snow is rare here: only 11 of 27 winters from 1991 to 2020 recorded 0.1 inch or more at Monroe Delta Cc, LA, 7.8 miles away, so there is no typical first-snow date to plan around.

ZIP 71291 is 7 miles from Monroe Regional Airport, LA, which stands at 79 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 71203 (Monroe). The 2023 USDA Plant Hardiness Zone Map lists ZIP 71291 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.