U.S. Frost Dates by Weather Station

NOAA station USC00414517 · Texas

Frost Dates for Jacksboro, TX

NOAA weather station Jacksboro (USC00414517), Texas · elevation 1081 ft (330 m) · hardiness zone 8a*

  • Lower-risk planting dateafter April 18only 1 spring in 10 still has a frost later
  • Typical last frostMarch 2850% chance of a frost after it
  • Typical first fall frostNovember 750% chance of a frost before it
  • Frost-free season225 daystypical year, 32°F
  • Hardiness zone8acalculated*

The year at a glance

Frost season at Jacksboro, TXSpring: a frost after March 9 in 9 years out of 10, after March 28 in half of the years, after April 18 in 1 year out of 10. Fall: the first frost comes before October 23 in 1 year out of 10, before November 7 in half of the years, before November 23 in 9 years out of 10. Typical frost-free season: 225 days.JanFebMarAprMayJunJulAugSepOctNovDecLast frost ~Mar 28First frost ~Nov 7Frost season at Jacksboro, TXSpring: a frost after March 9 in 9 years out of 10, after March 28 in half of the years, after April 18 in 1 year out of 10. Fall: the first frost comes before October 23 in 1 year out of 10, before November 7 in half of the years, before November 23 in 9 years out of 10. Typical frost-free season: 225 days.JFMAMJJASONDLast frost ~Mar 28First frost ~Nov 7
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 27 years of NOAA records (1991–2020 normals)
ChanceLast frost in spring afterFirst frost in fall before
10% (unlikely)April 18October 23
50% (typical)March 28November 7
90% (likely)March 9November 23
Frost-free season (32°F, 50% chance)
225 days
Hard frost (28°F), last in spring, 50% chance after
March 14
Hard frost (28°F), first in fall, 50% chance before
November 16

The last 15 years (2006–2020 normals)

Typical last frost March 29 (1 day later than the 30-year normal), typical first fall frost November 6 (1 day earlier). Frost-free season 222 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 Jacksboro: chance of a frost after this dateSpring, chance of a frost after the date: 10% April 18, 20% April 9, 30% April 4, 40% April 1, 50% March 28, 60% March 24, 70% March 19, 80% March 15, 90% March 9. Observed last spring frost in recent years: 2021 April 22, 2022 March 24, 2023 March 20, 2024 March 29, 2026 March 17.Spring: last frostChance of a frost after this date10%50%90%Mar 1Apr 1May 1Apr 18Mar 28Mar 92021: April 222022: March 242023: March 202024: March 292026: March 17Fall at Jacksboro: chance of a frost before this dateFall, chance of a frost before the date: 10% October 23, 20% October 29, 30% November 1, 40% November 4, 50% November 7, 60% November 10, 70% November 13, 80% November 17, 90% November 23. Observed first fall frost in recent years: 2021 November 6, 2022 October 18, 2023 October 31, 2024 November 22, 2025 November 10.Fall: first frostChance of a frost before this date10%50%90%Nov 1Dec 1Oct 23Nov 7Nov 232021: November 62022: October 182023: October 312024: November 222025: November 10
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 6
2022March 24October 18
2023March 20October 31
2024March 29November 22
2025incomplete recordNovember 10
2026March 17season not over yet

What these dates mean

The 225 days between the 50% dates in Jacksboro frame the window in which most tender crops can be cultivated. The 50% light-frost dates are March 28 and November 7; at each of those points there is an even chance of a frost occurring later in spring or earlier in fall. The median hard-frost dates are March 14 and November 16, marking when a 28 °F event is as likely as not.

For a cautious spring schedule, the April 18 date carries only a 10 % chance of a light frost later, making it the recommended time to set out tender crops. In the fall, the October 23 date offers a 10 % chance of a light frost earlier, so it is the prudent deadline for finishing harvest of tender crops.

A hard frost at 28 °F can injure plants that would survive a light frost at 32 °F, so it is a greater concern for gardeners.

How to read the probabilities

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

  • Spring: "10% after April 18" 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 23" 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 Jacksboro, TXNumbered nearest stations: 1 — Mineral Wells, TX — 30 mi; 2 — near Fort Worth, TX — 54 mi; 3 — Wichita Falls, TX — 57 mi; 4 — Denton, TX — 62 mi; 5 — Lake Kemp, TX — 68 mi.TXOK25 mi · 40 km1. Mineral Wells, TX — 30 mi12. near Fort Worth, TX — 54 mi23. Wichita Falls, TX — 57 mi34. Denton, TX — 62 mi45. Lake Kemp, TX — 68 mi5
  1. Mineral Wells, TX 30 mi (48 km)
  2. near Fort Worth, TX 54 mi (87 km)
  3. Wichita Falls, TX 57 mi (91 km)
  4. Denton, TX 62 mi (99 km)
  5. Lake Kemp, TX 68 mi (109 km)

Sources

* Hardiness zone 8a: zone derived from PRISM 2023 grid at the station location (not the official USDA map). Source data: PRISM Group, Oregon State University.

Station coordinates: 33.2064, -98.1689.