U.S. Frost Dates by Weather Station

NOAA station USC00412464 · Texas

Frost Dates for Dimmitt, TX

NOAA weather station Dimmitt 2 N (USC00412464), Texas · elevation 3850 ft (1174 m) · hardiness zone 7a*

  • Lower-risk planting dateafter May 4only 1 spring in 10 still has a frost later
  • Typical last frostApril 2250% chance of a frost after it
  • Typical first fall frostOctober 2350% chance of a frost before it
  • Frost-free season182 daystypical year, 32°F
  • Hardiness zone7acalculated*

The year at a glance

Frost season at Dimmitt, TXSpring: a frost after April 8 in 9 years out of 10, after April 22 in half of the years, after May 4 in 1 year out of 10. Fall: the first frost comes before October 9 in 1 year out of 10, before October 23 in half of the years, before November 4 in 9 years out of 10. Typical frost-free season: 182 days.JanFebMarAprMayJunJulAugSepOctNovDecLast frost ~Apr 22First frost ~Oct 23Frost season at Dimmitt, TXSpring: a frost after April 8 in 9 years out of 10, after April 22 in half of the years, after May 4 in 1 year out of 10. Fall: the first frost comes before October 9 in 1 year out of 10, before October 23 in half of the years, before November 4 in 9 years out of 10. Typical frost-free season: 182 days.JFMAMJJASONDLast frost ~Apr 22First frost ~Oct 23
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 26 years of NOAA records (1991–2020 normals)
ChanceLast frost in spring afterFirst frost in fall before
10% (unlikely)May 4October 9
50% (typical)April 22October 23
90% (likely)April 8November 4
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
November 1

The last 15 years (2006–2020 normals)

Typical last frost April 24 (2 days later than the 30-year normal), typical first fall frost October 23. 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 Dimmitt: chance of a frost after this dateSpring, chance of a frost after the date: 10% May 4, 20% April 30, 30% April 27, 40% April 24, 50% April 22, 60% April 20, 70% April 16, 80% April 12, 90% April 8. Observed last spring frost in recent years: 2021 April 22, 2022 April 14, 2023 April 8, 2024 March 29, 2025 April 7, 2026 March 18.Spring: last frostChance of a frost after this date10%50%90%Apr 1May 1May 4Apr 22Apr 82021: April 222022: April 142023: April 82024: March 292025: April 72026: March 18Fall at Dimmitt: chance of a frost before this dateFall, chance of a frost before the date: 10% October 9, 20% October 14, 30% October 17, 40% October 20, 50% October 23, 60% October 25, 70% October 28, 80% November 1, 90% November 4. Observed first fall frost in recent years: 2021 November 4, 2022 November 5, 2023 October 29, 2024 November 20, 2025 October 29.Fall: first frostChance of a frost before this date10%50%90%Oct 1Nov 1Oct 9Oct 23Nov 42021: November 42022: November 52023: October 292024: November 202025: 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 22November 4
2022April 14November 5
2023April 8October 29
2024March 29November 20
2025April 7October 29
2026March 18season not over yet

What these dates mean

The 182 days between the 32°F 50% dates in Dimmitt mark the span where light-frost odds shift from even to even again, framing the period that most tender crops can occupy.

For a gardener, the 50% date in spring is April 22 and the 50% date in fall is October 23; at each of these points the chance of a light frost is 50 %. The cautious spring date is May 4, which carries only a 10 % chance of a frost later, while planting on April 8 carries a 90 % chance and is a gamble. In the fall the cautious date is October 9, with a 10 % chance of a frost earlier, whereas waiting until November 4 involves a 90 % chance of a frost and is risky.

Hard frost at 28 °F is more damaging than light frost at 32 °F, so the median hard-frost dates of April 10 and November 1 are important checkpoints for protecting vulnerable plants.

How to read the probabilities

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

  • Spring: "10% after May 4" 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 9" 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 Dimmitt, TXNumbered nearest stations: 1 — Hereford, TX — 17 mi; 2 — Hart, TX — 19 mi; 3 — Friona, TX — 24 mi; 4 — Tulia, TX — 31 mi; 5 — near Muleshoe, TX — 35 mi.TXNM25 mi · 40 km1. Hereford, TX — 17 mi12. Hart, TX — 19 mi23. Friona, TX — 24 mi34. Tulia, TX — 31 mi45. near Muleshoe, TX — 35 mi5
  1. Hereford, TX 17 mi (27 km)
  2. Hart, TX 19 mi (30 km)
  3. Friona, TX 24 mi (38 km)
  4. Tulia, TX 31 mi (51 km)
  5. near Muleshoe, TX 35 mi (56 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: 34.5858, -102.312.