Frost Report

All states Oklahoma

Frost dates for Walters, OK

When the last spring frost and first fall frost usually come, and when to plant, from 30 years of NOAA weather records.

Last spring frost

March 26

typical year

Safe to plant

April 15

frost is over in 9 of 10 years

First fall frost

November 6

typical year

Growing season

225 days

frost-free, typical year

When to plant

Counted from this page's frost dates. Warm-season crops wait for the safe-to-plant date.

CropStart indoorsPlant outsideFall planting
Cool-season crops
Peas – Feb 26 – Mar 12 –
Spinach – Feb 12 – Mar 5 Sep 11 – 25
Lettuce – Feb 26 – Mar 19 Sep 11 – 25
Radishes – Feb 26 – Apr 9 Sep 25 – Oct 9
Onions – Feb 26 – Mar 12 –
Potatoes – Mar 5 – 19 –
Carrots – Mar 5 – 26 Aug 14 – 28
Beets – Feb 26 – Mar 12 Aug 28 – Sep 11
Kale Jan 15 – 29 Feb 26 – Mar 12 Aug 28 – Sep 11
Broccoli Jan 15 – 29 Mar 12 – 26 Aug 28 – Sep 11
Cabbage Jan 1 – 15 Feb 26 – Mar 12 Aug 28 – Sep 11
Garlic – – Sep 25 – Oct 16
Warm-season crops
Tomatoes Feb 18 – Mar 4 Apr 15 – 29 –
Peppers Feb 11 – 25 Apr 22 – May 6 –
Cucumbers – Apr 15 – May 6 –
Zucchini – Apr 15 – May 13 –
Pumpkins – Apr 15 – May 6 –
Green beans – Apr 15 – Aug 28 –
Sweet corn – Apr 15 – May 13 –
Basil Mar 11 – 25 Apr 22 – 29 –

Onions: from sets. Green beans: until 10 weeks before the first fall frost. Garlic: harvest next summer.

The year at a glance

Start indoors Plant outside Fall planting

The chance of frost, by date

1 year in 10Half of years9 years in 10
Spring frost after April 15March 26March 3
Fall frost before October 23November 6November 21

Frost here means 32°F or colder. Read across: in 1 year in 10, spring frost carries on past the first date, which is why that date is the safe-to-plant date.

Hard freeze (28°F)

A hard freeze kills most garden plants, even hardy ones. The last one in spring usually comes around March 10 (April 1 in a late year), and the first one in fall around November 15.

Towns that use these dates

This is the nearest NOAA station with frost records for 1 town.

Walters

Where these dates come from

NOAA weather station WALTERS 4NW MESONET, OK US (USC00349282), 1991–2020 climate normals. It's the nearest station for 1 zip code, all within 6 miles:

73543

Planting dates follow common university extension advice; your local extension service can fine-tune them for your soil and microclimate.