U.S. Frost Dates by Weather Station

NOAA station USC00345779 · Oklahoma

Frost Dates for Meeker, OK

NOAA weather station Meeker 5 W (USC00345779), Oklahoma · elevation 925 ft (282 m) · hardiness zone 7b*

  • Lower-risk planting dateafter April 21only 1 spring in 10 still has a frost later
  • Typical last frostApril 450% chance of a frost after it
  • Typical first fall frostOctober 3050% chance of a frost before it
  • Frost-free season208 daystypical year, 32°F
  • Hardiness zone7bcalculated*

The year at a glance

Frost season at Meeker, OKSpring: a frost after March 19 in 9 years out of 10, after April 4 in half of the years, after April 21 in 1 year out of 10. Fall: the first frost comes before October 18 in 1 year out of 10, before October 30 in half of the years, before November 13 in 9 years out of 10. Typical frost-free season: 208 days.JanFebMarAprMayJunJulAugSepOctNovDecLast frost ~Apr 4First frost ~Oct 30Frost season at Meeker, OKSpring: a frost after March 19 in 9 years out of 10, after April 4 in half of the years, after April 21 in 1 year out of 10. Fall: the first frost comes before October 18 in 1 year out of 10, before October 30 in half of the years, before November 13 in 9 years out of 10. Typical frost-free season: 208 days.JFMAMJJASONDLast frost ~Apr 4First frost ~Oct 30
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)April 21October 18
50% (typical)April 4October 30
90% (likely)March 19November 13
Frost-free season (32°F, 50% chance)
208 days
Hard frost (28°F), last in spring, 50% chance after
March 25
Hard frost (28°F), first in fall, 50% chance before
November 7

The last 15 years (2006–2020 normals)

Typical last frost April 4 (same as the 30-year normal), typical first fall frost October 31 (1 day later). Frost-free season 208 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 Meeker: chance of a frost after this dateSpring, chance of a frost after the date: 10% April 21, 20% April 15, 30% April 10, 40% April 7, 50% April 4, 60% April 1, 70% March 30, 80% March 26, 90% March 19.Spring: last frostChance of a frost after this date10%50%90%Apr 1May 1Apr 21Apr 4Mar 19Fall at Meeker: chance of a frost before this dateFall, chance of a frost before the date: 10% October 18, 20% October 22, 30% October 25, 40% October 28, 50% October 30, 60% November 1, 70% November 4, 80% November 7, 90% November 13.Fall: first frostChance of a frost before this date10%50%90%Nov 1Oct 18Oct 30Nov 13
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.

What these dates mean

Setting out tender crops on March 19, the early spring light-frost date, is a gamble in Meeker because a frost later than that date occurs with a 90% chance. The cautious alternative for spring planting is April 21, when only a 10% chance of a later frost remains. In the fall, the cautious date for finishing tender crops is October 18, which carries a 10% chance that a frost has arrived earlier, while waiting until November 13 would be a gamble with a 90% chance of an earlier frost.

The 50% light-frost dates are April 4 and October 30; at each of those dates a light frost is equally likely to occur before or after. The 50% hard-frost dates are March 25 and November 7, marking the point where a hard frost is just as probable on either side. A hard frost at 28°F can damage plant tissue that would survive a light frost at 32°F.

How to read the probabilities

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

  • Spring: "10% after April 21" 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 18" 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 Meeker, OKNumbered nearest stations: 1 — Seminole, OK — 26 mi; 2 — near Oklahoma City, OK — 36 mi; 3 — Blanchard, OK — 47 mi; 4 — Ralston, OK — 70 mi; 5 — Billings, OK — 76 mi.OK25 mi · 40 km1. Seminole, OK — 26 mi12. near Oklahoma City, OK — 36 mi23. Blanchard, OK — 47 mi34. Ralston, OK — 70 mi45. Billings, OK — 76 mi5
  1. Seminole, OK 26 mi (42 km)
  2. near Oklahoma City, OK 36 mi (58 km)
  3. Blanchard, OK 47 mi (76 km)
  4. Ralston, OK 70 mi (113 km)
  5. Billings, OK 76 mi (122 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: 35.505, -96.9772.