Frost Dates for 28112 — Monroe, North Carolina

Half of springs at Monroe 2 SE, NC see their last 32°F night by April 3; only one in ten is past it by March 17, and one in ten still has one after April 18. Planting tender crops after April 8 leaves a 30% risk of a frost on them, after April 13 20%, and after April 18 10%. The 15 days between the even-odds date and the one-in-ten date is narrower than at 57% of the 173 North Carolina stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 1 in half of years, as early as October 21 one year in ten, and holds off past November 14 one year in ten. A hard freeze of 28°F follows 9 days later, around November 10; in spring the one-in-ten date for 28°F is April 7, 11 days before the 32°F one. The freeze-free season lasts 213 days in a typical year, shorter than at 57% of the 173 North Carolina stations; it reaches 233 days one year in ten and falls short of 194 one year in ten. On average 69 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 14, and return around October 25. Nights of 24°F, cold enough to damage hardier plants, come in 100% of winters and 16°F in 89%.

July is the warmest month at Monroe 2 SE, NC, averaging 91°F by day and 69°F at night; January is the coldest at 53°F and 30°F. A freezing night is all but certain in every month from November to March (a 90% chance or more). From May to September the chance of a 32°F night stays under 10% each month. In spring, April still brings one in 57% of years.

Warmth for growing adds up to 4,942 growing degree days a year (base 50°F), more than at 65% of the 173 North Carolina stations. 39% of them (1,923) have built up by the end of June, and July adds the most, 928. Precipitation totals 47.8 inches a year, most in August (4.9") and least in February (3.3"); May to September bring 45% of it.

The nearest other station, Monroe Airport, NC, 7 miles northwest of Monroe, has a last frost 3 days earlier (March 31), a first frost 4 days later (November 5), a season 7 days longer.

The first measurable snow (0.1 inch or more) in Monroe usually arrives around January 18, and the last of the season around February 11. Those are the middle dates across the winters of 1991–2020 at Monroe 2 SE, NC, 3.1 miles away: half of years saw snow earlier, half later. Snow fell in 71% of those winters. The last 32°F night of spring typically comes 51 days after the last snow.

ZIP 28112 is 3 miles from Monroe 2 SE, NC, which stands at 550 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 2 other ZIP codes share the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 28112 in zone 8a, the band where the coldest night of the year averaged 10 to 15°F (-12.2 to -9.4°C) over 1991–2020; a zone describes winter lows, not frost dates.