Frost Report

All states Washington

Frost dates for Republic, WA

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

May 30

typical year

Safe to plant

June 17

frost is over in 9 of 10 years

First fall frost

September 10

typical year

Growing season

102 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 – May 2 – 16 –
Spinach – Apr 18 – May 9 Jul 16 – 30
Lettuce – May 2 – 23 Jul 16 – 30
Radishes – May 2 – Jun 13 Jul 30 – Aug 13
Onions – May 2 – 16 –
Potatoes Season usually too short. Try a quick variety or row covers.
Carrots – May 9 – 30 Jun 18 – Jul 2
Beets – May 2 – 16 Jul 2 – 16
Kale Mar 21 – Apr 4 May 2 – 16 Jul 2 – 16
Broccoli Mar 21 – Apr 4 May 16 – 30 Jul 2 – 16
Cabbage Mar 7 – 21 May 2 – 16 Jul 2 – 16
Garlic – – Jul 30 – Aug 20
Warm-season crops
Tomatoes Apr 22 – May 6 Jun 17 – Jul 1 –
Peppers Apr 15 – 29 Jun 24 – Jul 8 –
Cucumbers – Jun 17 – Jul 8 –
Zucchini – Jun 17 – Jul 15 –
Pumpkins Season usually too short. Try a quick variety or row covers.
Green beans – Jun 17 – Jul 2 –
Sweet corn – Jun 17 – Jul 15 –
Basil May 13 – 27 Jun 24 – Jul 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 June 17May 30May 11
Fall frost before August 28September 10September 25

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 May 12 (May 28 in a late year), and the first one in fall around September 24.

Towns that use these dates

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

Republic

Where these dates come from

NOAA weather station REPUBLIC, WA US (USC00456974), 1991–2020 climate normals. It's the nearest station for 4 zip codes, all within 23 miles:

99118, 99121, 99150, 99166

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