Frost Dates for 89449 — Stateline, Nevada

Half of springs at Dagget Pass, NV see their last 32°F night by June 7; only one in ten is past it by May 21, and one in ten still has one after June 24. Planting tender crops after June 14 leaves a 30% risk of a frost on them, after June 19 20%, and after June 24 10%. The 17 days between the even-odds date and the one-in-ten date is narrower than at 82% of the 38 Nevada stations behind this site's ZIP pages.

In fall the first 32°F night comes by September 28 in half of years, as early as September 10 one year in ten, and holds off past October 16 one year in ten. A hard freeze of 28°F follows 14 days later, around October 12; in spring the one-in-ten date for 28°F is June 12, 12 days before the 32°F one. The freeze-free season lasts 113 days in a typical year, shorter than at 89% of the 38 Nevada stations; it reaches 136 days one year in ten and falls short of 90 one year in ten. On average 186 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 June 19, and return around September 15. Severe cold of 16°F or below comes every winter, usually between November 21 and March 30.

July is the warmest month at Dagget Pass, NV, averaging 75°F by day and 49°F at night; December is the coldest at 35°F and 23°F. A freezing night is all but certain in every month from October to May (a 90% chance or more). From July to August the chance of a 32°F night stays under 10% each month. In spring, June still brings one in 74% of years.

Warmth for growing adds up to 1,177 growing degree days a year (base 50°F), the fewest of the 38 Nevada stations. 19% of them (223) have built up by the end of June, and July adds the most, 372. Precipitation totals 21.9 inches a year, most in December (4.0") and least in July (0.2"); May to September bring 13% of it.

The nearest other station, Minden, NV, 7 miles east of Stateline and 2,625 feet lower, has a last frost 8 days earlier (May 30), a first frost 2 days earlier (September 26), a season 6 days longer.

The first measurable snow (0.1 inch or more) in Stateline usually arrives around November 1, and the last of the season around April 17. Those are the middle dates across the winters of 1991–2020 at Dagget Pass, NV, 1.4 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 51 days after the last snow.

ZIP 89449 is 1 mile from Dagget Pass, NV, which stands at 7,334 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station; its figures are presented in full for 96150 (South Lake Tahoe). The 2023 USDA Plant Hardiness Zone Map lists ZIP 89449 in zone 7a, the band where the coldest night of the year averaged 0 to 5°F (-17.8 to -15.0°C) over 1991–2020; a zone describes winter lows, not frost dates.