Frost Report

All states Oklahoma

Frost dates for Lane Mesonet, 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 29

typical year

Safe to plant

April 17

frost is over in 9 of 10 years

First fall frost

November 4

typical year

Growing season

222 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 – Mar 1 – 15 –
Spinach – Feb 15 – Mar 8 Sep 9 – 23
Lettuce – Mar 1 – 22 Sep 9 – 23
Radishes – Mar 1 – Apr 12 Sep 23 – Oct 7
Onions – Mar 1 – 15 –
Potatoes – Mar 8 – 22 –
Carrots – Mar 8 – 29 Aug 12 – 26
Beets – Mar 1 – 15 Aug 26 – Sep 9
Kale Jan 18 – Feb 1 Mar 1 – 15 Aug 26 – Sep 9
Broccoli Jan 18 – Feb 1 Mar 15 – 29 Aug 26 – Sep 9
Cabbage Jan 4 – 18 Mar 1 – 15 Aug 26 – Sep 9
Garlic – – Sep 23 – Oct 14
Warm-season crops
Tomatoes Feb 20 – Mar 6 Apr 17 – May 1 –
Peppers Feb 13 – 27 Apr 24 – May 8 –
Cucumbers – Apr 17 – May 8 –
Zucchini – Apr 17 – May 15 –
Pumpkins – Apr 17 – May 8 –
Green beans – Apr 17 – Aug 26 –
Sweet corn – Apr 17 – May 15 –
Basil Mar 13 – 27 Apr 24 – May 1 –

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 17March 29March 7
Fall frost before October 20November 4November 20

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 12 (April 3 in a late year), and the first one in fall around November 14.

Where these dates come from

NOAA weather station LANE 1WNW MESONET, OK US (USC00345020), 1991–2020 climate normals. It's the nearest station for 3 zip codes, all within 13 miles:

74525, 74533, 74555

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