U.S. Frost Dates by Weather Station

NOAA station USC00406371 · Tennessee

Frost Dates for Murfreesboro, TN

NOAA weather station Murfreesboro 5 N (USC00406371), Tennessee · elevation 535 ft (163 m) · hardiness zone 7b*

  • Lower-risk planting dateafter April 26only 1 spring in 10 still has a frost later
  • Typical last frostApril 950% chance of a frost after it
  • Typical first fall frostOctober 2750% chance of a frost before it
  • Frost-free season202 daystypical year, 32°F
  • Hardiness zone7bcalculated*

The year at a glance

Frost season at Murfreesboro, TNSpring: a frost after March 22 in 9 years out of 10, after April 9 in half of the years, after April 26 in 1 year out of 10. Fall: the first frost comes before October 15 in 1 year out of 10, before October 27 in half of the years, before November 11 in 9 years out of 10. Typical frost-free season: 202 days.JanFebMarAprMayJunJulAugSepOctNovDecLast frost ~Apr 9First frost ~Oct 27Frost season at Murfreesboro, TNSpring: a frost after March 22 in 9 years out of 10, after April 9 in half of the years, after April 26 in 1 year out of 10. Fall: the first frost comes before October 15 in 1 year out of 10, before October 27 in half of the years, before November 11 in 9 years out of 10. Typical frost-free season: 202 days.JFMAMJJASONDLast frost ~Apr 9First frost ~Oct 27
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.Today

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 26October 15
50% (typical)April 9October 27
90% (likely)March 22November 11
Frost-free season (32°F, 50% chance)
202 days
Hard frost (28°F), last in spring, 50% chance after
March 28
Hard frost (28°F), first in fall, 50% chance before
November 7

The last 15 years (2006–2020 normals)

Typical last frost April 10 (1 day later than the 30-year normal), typical first fall frost October 27. Frost-free season 200 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 Murfreesboro: chance of a frost after this dateSpring, chance of a frost after the date: 10% April 26, 20% April 20, 30% April 15, 40% April 12, 50% April 9, 60% April 6, 70% April 1, 80% March 28, 90% March 22. Observed last spring frost in recent years: 2021 April 22, 2022 April 10, 2023 April 24, 2024 April 22, 2025 April 13, 2026 March 30.Spring: last frostChance of a frost after this date10%50%90%Apr 1May 1Apr 26Apr 9Mar 222021: April 222022: April 102023: April 242024: April 222025: April 132026: March 30Fall at Murfreesboro: chance of a frost before this dateFall, chance of a frost before the date: 10% October 15, 20% October 19, 30% October 22, 40% October 25, 50% October 27, 60% October 30, 70% November 1, 80% November 5, 90% November 11. Observed first fall frost in recent years: 2021 November 4, 2022 October 9, 2023 October 31, 2024 October 16, 2025 November 10.Fall: first frostChance of a frost before this date10%50%90%Oct 1Nov 1Oct 15Oct 27Nov 112021: November 42022: October 92023: October 312024: October 162025: 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 4
2022April 10October 9
2023April 24October 31
2024April 22October 16
2025April 13November 10
2026March 30season not over yet

What these dates mean

October 15 is the cautious fall date for gardeners to finish the harvest of tender crops in Murfreesboro. It carries only a 10% chance that a light frost has arrived earlier, so planting or harvesting after this date reduces the risk of frost damage. The 50% date is October 27, which represents a 50% chance of a light frost earlier than that day.

In spring, April 26 serves as the cautious date for gardeners to set out tender crops, with a 10% chance of a frost later than this date. The 50% date is April 9, indicating a 50% chance of a light frost later than that day, while March 22 carries a 90% chance and is a gamble.

Hard frost at 28°F can injure plants that survive a 32°F light frost, making it a more critical threshold; the median hard-frost dates are March 28 in spring and November 7 in fall.

How to read the probabilities

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

  • Spring: "10% after April 26" 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 15" 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 Murfreesboro, TNNumbered nearest stations: 1 — Woodbury, TN — 17 mi; 2 — Nashville, TN — 22 mi; 3 — near Green Hill, TN — 25 mi; 4 — near Shelbyville, TN — 30 mi; 5 — Smithville, TN — 33 mi.KY25 mi · 40 km1. Woodbury, TN — 17 mi12. Nashville, TN — 22 mi23. near Green Hill, TN — 25 mi34. near Shelbyville, TN — 30 mi45. Smithville, TN — 33 mi5
  1. Woodbury, TN 17 mi (27 km)
  2. Nashville, TN 22 mi (36 km)
  3. near Green Hill, TN 25 mi (40 km)
  4. near Shelbyville, TN 30 mi (49 km)
  5. Smithville, TN 33 mi (53 km)

Sources

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

Station coordinates: 35.9203, -86.3728.