U.S. Frost Dates by Weather Station

NOAA station USC00235704 · Missouri

Frost Dates for Monett, MO

NOAA weather station Monett 4 SW (USC00235704), Missouri · elevation 1420 ft (433 m) · hardiness zone 7a*

  • Lower-risk planting dateafter April 27only 1 spring in 10 still has a frost later
  • Typical last frostApril 950% chance of a frost after it
  • Typical first fall frostOctober 2650% chance of a frost before it
  • Frost-free season199 daystypical year, 32°F
  • Hardiness zone7acalculated*

The year at a glance

Frost season at Monett, MOSpring: a frost after March 24 in 9 years out of 10, after April 9 in half of the years, after April 27 in 1 year out of 10. Fall: the first frost comes before October 13 in 1 year out of 10, before October 26 in half of the years, before November 10 in 9 years out of 10. Typical frost-free season: 199 days.JanFebMarAprMayJunJulAugSepOctNovDecLast frost ~Apr 9First frost ~Oct 26Frost season at Monett, MOSpring: a frost after March 24 in 9 years out of 10, after April 9 in half of the years, after April 27 in 1 year out of 10. Fall: the first frost comes before October 13 in 1 year out of 10, before October 26 in half of the years, before November 10 in 9 years out of 10. Typical frost-free season: 199 days.JFMAMJJASONDLast frost ~Apr 9First frost ~Oct 26
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)April 27October 13
50% (typical)April 9October 26
90% (likely)March 24November 10
Frost-free season (32°F, 50% chance)
199 days
Hard frost (28°F), last in spring, 50% chance after
March 31
Hard frost (28°F), first in fall, 50% chance before
November 4

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 (1 day later). 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 Monett: chance of a frost after this dateSpring, chance of a frost after the date: 10% April 27, 20% April 21, 30% April 17, 40% April 13, 50% April 9, 60% April 6, 70% April 3, 80% March 31, 90% March 24. Observed last spring frost in recent years: 2021 April 22, 2023 April 23, 2024 March 28, 2025 April 8, 2026 March 28.Spring: last frostChance of a frost after this date10%50%90%Apr 1May 1Apr 27Apr 9Mar 242021: April 222023: April 232024: March 282025: April 82026: March 28Fall at Monett: chance of a frost before this dateFall, chance of a frost before the date: 10% October 13, 20% October 17, 30% October 21, 40% October 24, 50% October 26, 60% October 29, 70% November 1, 80% November 4, 90% November 10. Observed first fall frost in recent years: 2021 November 4, 2022 October 18, 2023 October 30, 2024 October 16, 2025 November 2.Fall: first frostChance of a frost before this date10%50%90%Oct 1Nov 1Oct 13Oct 26Nov 102021: November 42022: October 182023: October 302024: October 162025: November 2
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
2022incomplete recordOctober 18
2023April 23October 30
2024March 28October 16
2025April 8November 2
2026March 28season not over yet

What these dates mean

October 13 is the cautious fall date to finish harvesting tender crops in Monett, because there is only a 10 % chance that a light frost has arrived earlier. In the spring the cautious date for setting out tender crops is April 27, when the chance of a light frost later in the season is also 10 %.

The 50% light-frost dates are April 9 and October 26; each marks the point at which a light frost is as likely as not, providing a reference for the length of the frost-free window. The 50% hard-frost dates are March 31 in spring and November 4 in fall, and a hard frost at 28 °F can damage plants that would otherwise survive a light frost at 32 °F. The record spans 30 years and the two 32 °F 50% dates are 199 days apart.

How to read the probabilities

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

  • Spring: "10% after April 27" 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 13" 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 Monett, MONumbered nearest stations: 1 — Neosho, MO — 22 mi; 2 — Billings, MO — 25 mi; 3 — Joplin, MO — 36 mi; 4 — Springfield, MO — 40 mi; 5 — Gravette, AR — 40 mi.AROKKS25 mi · 40 km1. Neosho, MO — 22 mi12. Billings, MO — 25 mi23. Joplin, MO — 36 mi34. Springfield, MO — 40 mi45. Gravette, AR — 40 mi5
  1. Neosho, MO 22 mi (35 km)
  2. Billings, MO 25 mi (40 km)
  3. Joplin, MO 36 mi (57 km)
  4. Springfield, MO 40 mi (65 km)
  5. Gravette, AR 40 mi (65 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: 36.8617, -93.9625.