Frost Dates for 73048 — Hydro, Oklahoma

Half of springs at Hinton 7W Mesonet, OK see their last 32°F night by April 5; only one in ten is past it by March 20, and one in ten still has one after April 22. Planting tender crops after April 13 leaves a 30% risk of a frost on them, after April 17 20%, and after April 22 10%. The 17 days between the even-odds date and the one-in-ten date is narrower than at 41% of the 114 Oklahoma 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 19 one year in ten, and holds off past November 15 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 10, 12 days before the 32°F one. The freeze-free season lasts 208 days in a typical year, shorter than at 62% of the 114 Oklahoma stations; it reaches 231 days one year in ten and falls short of 188 one year in ten. On average 84 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 April 17, and return around October 23. Severe cold of 16°F or below comes in 98% of winters, usually between December 13 and February 12.

July is the warmest month at Hinton 7W Mesonet, OK, averaging 95°F by day and 70°F at night; January is the coldest at 48°F and 27°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 67% of years.

Warmth for growing adds up to 4,948 growing degree days a year (base 50°F), fewer than at 80% of the 114 Oklahoma stations. 37% of them (1,835) have built up by the end of June, and July adds the most, 1,001.

The nearest other station, Weatherford, OK, 9 miles west of Hydro, has a last frost 2 days earlier (April 3), a first frost 2 days later (November 3), a season 6 days longer.

The first measurable snow (0.1 inch or more) in Hydro usually arrives around December 26, and the last of the season around February 9. Those are the middle dates across the winters of 1991–2020 at Colony, OK, 11.1 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 55 days after the last snow.

ZIP 73048 is 4 miles from Hinton 7W Mesonet, OK, which stands at 1,617 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 73047 (Hinton). The 2023 USDA Plant Hardiness Zone Map lists ZIP 73048 in zone 7b, the band where the coldest night of the year averaged 5 to 10°F (-15.0 to -12.2°C) over 1991–2020; a zone describes winter lows, not frost dates.