U.S. Frost Dates by Weather Station

NOAA station USC00413972 · Texas

Frost Dates for Hart, TX

NOAA weather station Hart (USC00413972), Texas · elevation 3663 ft (1117 m) · hardiness zone 7a*

  • Lower-risk planting dateafter May 3only 1 spring in 10 still has a frost later
  • Typical last frostApril 2250% chance of a frost after it
  • Typical first fall frostOctober 2150% chance of a frost before it
  • Frost-free season182 daystypical year, 32°F
  • Hardiness zone7acalculated*

The year at a glance

Frost season at Hart, TXSpring: a frost after April 8 in 9 years out of 10, after April 22 in half of the years, after May 3 in 1 year out of 10. Fall: the first frost comes before October 8 in 1 year out of 10, before October 21 in half of the years, before November 2 in 9 years out of 10. Typical frost-free season: 182 days.JanFebMarAprMayJunJulAugSepOctNovDecLast frost ~Apr 22First frost ~Oct 21Frost season at Hart, TXSpring: a frost after April 8 in 9 years out of 10, after April 22 in half of the years, after May 3 in 1 year out of 10. Fall: the first frost comes before October 8 in 1 year out of 10, before October 21 in half of the years, before November 2 in 9 years out of 10. Typical frost-free season: 182 days.JFMAMJJASONDLast frost ~Apr 22First frost ~Oct 21
frost likely chance fading 90% → 10% frost-free in a typical yearThe year at a glance. Blue: frost is likely; the gradient fades as the chance drops from 90% to 10%; green: the frost-free part of a typical year.

Frost dates (32°F)

Probability of frost, based on 30 years of NOAA records (1991–2020 normals)
ChanceLast frost in spring afterFirst frost in fall before
10% (unlikely)May 3October 8
50% (typical)April 22October 21
90% (likely)April 8November 2
Frost-free season (32°F, 50% chance)
182 days
Hard frost (28°F), last in spring, 50% chance after
April 10
Hard frost (28°F), first in fall, 50% chance before
October 31

The last 15 years (2006–2020 normals)

Typical last frost April 23 (1 day later than the 30-year normal), typical first fall frost October 21. Frost-free season 181 days.

A shorter, more recent NOAA period. The 30-year normals above remain the main reference: 15 years carry more year-to-year noise.

Add these dates to your calendar Yearly reminders for the typical last frost, the lower-risk planting date and the typical first fall frost (.ics).

How the chance of frost changes with the date

Spring at Hart: chance of a frost after this dateSpring, chance of a frost after the date: 10% May 3, 20% April 30, 30% April 27, 40% April 24, 50% April 22, 60% April 19, 70% April 15, 80% April 13, 90% April 8. Observed last spring frost in recent years: 2021 April 22, 2022 April 18, 2023 April 29, 2024 April 3, 2025 April 8, 2026 April 20.Spring: last frostChance of a frost after this date10%50%90%Apr 1May 1May 3Apr 22Apr 82021: April 222022: April 182023: April 292024: April 32025: April 82026: April 20Fall at Hart: chance of a frost before this dateFall, chance of a frost before the date: 10% October 8, 20% October 13, 30% October 16, 40% October 18, 50% October 21, 60% October 24, 70% October 26, 80% October 30, 90% November 2. Observed first fall frost in recent years: 2021 October 18, 2022 October 25, 2023 October 29, 2024 October 31, 2025 October 29.Fall: first frostChance of a frost before this date10%50%90%Oct 1Nov 1Oct 8Oct 21Nov 22021: October 182022: October 252023: October 292024: October 312025: October 29
Two charts, because spring and fall answer different questions: in spring, the chance that a frost still comes after a date; in fall, the chance that the first frost has already come before it. NOAA publishes these odds from 10% to 90%, so the lines stop there. ◆ marks the actual date in each recent year.

What actually happened in recent years

Observed dates of the last spring and first fall frost (32°F) at this station; ◆ marks them on the charts above
YearLast spring frostFirst fall frost
2021April 22October 18
2022April 18October 25
2023April 29October 29
2024April 3October 31
2025April 8October 29
2026April 20season not over yet

What these dates mean

May 3 is the cautious spring date, offering a gardener only a 10 % chance that a light frost will occur later and therefore permitting the setting out of tender crops. The 50% date is April 22, when there is a 50 % chance of a frost later, and the median hard-frost date is April 10, marking the point at which a 28 °F frost becomes as likely as not. In the fall, October 8 serves as the cautious date, with just a 10 % chance that a light frost has arrived earlier, letting gardeners finish harvesting tender crops; the 50% date is October 21, when there is a 50 % chance of a frost earlier, and the median hard-frost date is October 31.

A hard frost at 28 °F can damage plants more severely than a light frost at 32 °F, so the hard-frost dates provide a useful benchmark beyond the light-frost probabilities.

How to read the probabilities

The dates are probabilities from 30 years of weather, not a forecast for this year.

  • Spring: "10% after May 3" means that in about one spring out of ten a frost still happens after that date. The 90% date is the earliest: a frost after it happens in most years.
  • Fall: "10% before October 8" means that in about one fall out of ten the first frost arrives before that date.
  • 50% is the typical date: half of the years are earlier, half are later.
  • A light frost (32°F) damages tender plants; a hard frost (28°F) also stops most hardy vegetables.

Nearby weather stations

Map of weather stations near Hart, TXNumbered nearest stations: 1 — Dimmitt, TX — 19 mi; 2 — Tulia, TX — 24 mi; 3 — Plainview, TX — 27 mi; 4 — Hereford, TX — 35 mi; 5 — Littlefield, TX — 36 mi.NM25 mi · 40 km1. Dimmitt, TX — 19 mi12. Tulia, TX — 24 mi23. Plainview, TX — 27 mi34. Hereford, TX — 35 mi45. Littlefield, TX — 36 mi5
  1. Dimmitt, TX 19 mi (30 km)
  2. Tulia, TX 24 mi (38 km)
  3. Plainview, TX 27 mi (43 km)
  4. Hereford, TX 35 mi (56 km)
  5. Littlefield, TX 36 mi (57 km)

Sources

* Hardiness zone 7a: zone derived from PRISM 2023 grid at the station location (not the official USDA map). Source data: PRISM Group, Oregon State University.

Station coordinates: 34.3697, -102.1175.