Frost Dates for 17764 — Renovo, Pennsylvania

Half of springs at Renovo, PA see their last 32°F night by April 30; only one in ten is past it by April 17, and one in ten still has one after May 17. Planting tender crops after May 6 leaves a 30% risk of a frost on them, after May 11 20%, and after May 17 10%. The 17 days between the even-odds date and the one-in-ten date is wider than at 50% of the 176 Pennsylvania stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 22 in half of years, as early as October 6 one year in ten, and holds off past November 4 one year in ten. A hard freeze of 28°F follows 11 days later, around November 2; in spring the one-in-ten date for 28°F is May 5, 12 days before the 32°F one. The freeze-free season lasts 173 days in a typical year, shorter than at 53% of the 176 Pennsylvania stations; it reaches 193 days one year in ten and falls short of 152 one year in ten. On average 138 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 12 days longer, to about May 12, and return around October 8. Severe cold of 16°F or below comes every winter, usually between December 9 and March 13.

July is the warmest month at Renovo, PA, averaging 83°F by day and 60°F at night; January is the coldest at 34°F and 19°F. A freezing night is all but certain in every month from November to April (a 90% chance or more). From June to September the chance of a 32°F night stays under 10% each month. In spring, May still brings one in 47% of years.

Warmth for growing adds up to 2,752 growing degree days a year (base 50°F), fewer than at 64% of the 176 Pennsylvania stations. 33% of them (917) have built up by the end of June, and July adds the most, 666. Precipitation totals 41.2 inches a year, most in September (4.3") and least in February (2.2"); May to September bring 48% of it.

The nearest other station, Lock Haven Sewage Plt, PA, 24 miles southeast of Renovo, has the same 50% last-frost date, a first frost 2 days earlier (October 20).

The first measurable snow (0.1 inch or more) in Renovo usually arrives around November 30, and the last of the season around March 21. Those are the middle dates across the winters of 1991–2020 at Renovo, PA, 3.4 miles away: half of years saw snow earlier, half later. Every one of those winters saw snow. The last 32°F night of spring typically comes 40 days after the last snow.

ZIP 17764 is 3 miles from Renovo, PA, which stands at 660 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 17764 in zone 6a, the band where the coldest night of the year averaged -10 to -5°F (-23.3 to -20.6°C) over 1991–2020; a zone describes winter lows, not frost dates.