Oregon Frost Dates

Oregon has 189 NOAA weather stations with freeze records in the 1991–2020 climate normals. The typical last spring frost ranges from January 31 at Brookings 2 Se to June 11 at Squaw Butte-Northern Great Bas; at half the stations it has come by April 22. The first fall frost typically arrives between September 5 at Drewsey and December 27 at Brookings, with a median of October 22.

The growing season between the typical frosts runs from 84 days at Enterprise 20 Nne to 349 days at Brookings; 183 days at the median station.

At 18 stations, a freeze is possible in any month.

Every station in Oregon

Typical dates have a 50% chance of a frost after them in spring, and before them in fall; safer dates, 10%. A garden can differ from its nearest station, especially in a valley or on a hillside: see why your garden may differ.

Oregon: freeze (32 °F) dates by NOAA station, 1991–2020 normals
Station	Elevation	Last frost	Safer	First frost	Safer	Season (days)
Alkali Lake	4,332 ft	Jun 10	Jun 27	Sep 14	Aug 31	94
Alsea Fh (Fall Creek)	230 ft	Apr 13	May 3	Nov 3	Oct 9	202
Antelope 6 Ssw	3,030 ft	May 22	Jun 10	Oct 3	Sep 16	131
Arlington	277 ft	Apr 6	Apr 28	Oct 21	Oct 6	196
Ashland	1,729 ft	May 6	May 27	Oct 8	Sep 21	154
Astoria Rgnl Ap	9 ft	Mar 26	Apr 18	Nov 11	Oct 22	232
Aurora State Ap	196 ft	Mar 16	Apr 7	Nov 14	Oct 27	242
Austin 3 S	4,213 ft	A freeze is possible in any month
Baker City Muni Ap	3,361 ft	May 25	Jun 16	Sep 15	Sep 2	111
Bandon 2 Nne	23 ft	Mar 9	Apr 7	Nov 27	Nov 1	260
Barnes Stn	3,970 ft	Jun 2	Jun 25	Sep 17	Aug 30	104
Beaverton 2 Ssw	270 ft	Apr 1	Apr 26	Nov 6	Oct 19	222
Belknap Springs 8 N	2,152 ft	May 5	May 29	Oct 12	Sep 25	159
Bend 7 Ne	3,358 ft	A freeze is possible in any month
Bend	3,660 ft	Jun 6	Jun 22	Sep 20	Sep 3	105
Bly 4 Se	4,560 ft	Jun 8	Jun 23	Sep 17	Sep 1	101
Boardman	280 ft	Apr 14	May 2	Oct 21	Oct 5	188
Bonneville Dam	62 ft	Mar 14	Apr 4	Nov 27	Nov 8	257
Brookings 2 Se	50 ft	Jan 31	Mar 20	Dec 27	Nov 24	334
Brookings	82 ft	Jan 31	Mar 21	Dec 27	Nov 26	349
Brothers	4,640 ft	A freeze is possible in any month
Burns Muni Ap	4,140 ft	Jun 11	Jun 28	Sep 6	Aug 21	85
Cascade Locks	142 ft	Mar 24	Apr 16	Nov 20	Nov 1	242
Cascadia	960 ft	Apr 29	May 17	Oct 13	Sep 22	167
Cave Junction 1 Wnw	1,377 ft	May 1	May 23	Oct 12	Sep 23	161
Chemult	4,760 ft	A freeze is possible in any month
Chiloquin 12 Nw (Fort Klamath)	4,180 ft	A freeze is possible in any month
Clatskanie	22 ft	Apr 24	May 9	Oct 24	Oct 5	184
Cloverdale	12 ft	Mar 17	Apr 15	Nov 22	Oct 26	251
Condon	2,881 ft	May 10	May 27	Oct 7	Sep 21	148
Coos Bay 8 Sw	12 ft	Apr 15	May 3	Oct 31	Oct 8	199
Coquille City	23 ft	Mar 28	Apr 27	Nov 6	Oct 17	225
Corvallis 10 Ssw	312 ft	Apr 11	May 5	Oct 30	Oct 8	203
Corvallis State Univ	225 ft	Apr 17	May 8	Oct 28	Oct 5	194
Corvallis Water Bureau	592 ft	May 15	Jun 2	Oct 8	Sep 24	145
Cottage Grove 2e	595 ft	Apr 24	May 10	Oct 25	Sep 30	183
Cottage Grove Dam	831 ft	Apr 12	May 4	Nov 1	Oct 16	205
Cougar Dam	1,260 ft	Mar 2	Mar 27	Nov 30	Nov 3	274
Crater Lake Nps Hq	6,485 ft	A freeze is possible in any month
Dallas 2 Ne	290 ft	Apr 16	May 5	Nov 1	Oct 13	199
Dayville 8 Nw	2,260 ft	May 4	May 23	Oct 6	Sep 21	155
Detroit Dam	1,220 ft	Mar 9	Apr 8	Dec 3	Nov 8	270
Dorena	820 ft	Apr 16	May 11	Oct 28	Oct 4	194
Drain	292 ft	Apr 16	May 8	Oct 25	Oct 2	193
Drewsey	3,515 ft	Jun 5	Jun 26	Sep 5	Aug 20	91
Dufur	1,330 ft	May 12	May 31	Oct 7	Sep 22	148
Elgin	2,697 ft	May 24	Jun 21	Sep 18	Sep 1	114
Elkton 1sw	125 ft	Apr 11	May 10	Nov 6	Oct 17	209
Elkton 3 Sw	120 ft	Mar 21	Apr 14	Nov 12	Oct 14	240
Enterprise 20 Nne	3,280 ft	Jun 8	Jul 8	Sep 5	Aug 16	84
Estacada 2 Se	514 ft	Mar 27	Apr 23	Nov 14	Oct 23	230
Eugene Mahlon Sweet Ap	353 ft	Apr 11	May 9	Oct 23	Oct 6	196
Falls City 2 Ssw	690 ft	Apr 18	May 6	Nov 7	Oct 21	202
Fern Ridge-Veneta	485 ft	Apr 18	May 5	Oct 25	Oct 6	189
Fields	4,227 ft	May 10	Jun 3	Oct 7	Sep 21	145
Florence #2	75 ft	Apr 10	May 5	Nov 15	Oct 23	220
Forest Grove	180 ft	Apr 16	May 5	Oct 26	Oct 6	192
Fossil	2,650 ft	Jun 3	Jul 3	Sep 14	Aug 25	98
Foster Dam	550 ft	Apr 12	May 5	Oct 28	Oct 5	197
Ft Clatsop Natl Mem	42 ft	Mar 30	Apr 28	Nov 18	Oct 27	233
Gerber Dam	4,870 ft	May 31	Jun 17	Sep 21	Sep 6	114
Gold Beach Rs	50 ft	Feb 16	Mar 25	Dec 16	Nov 23	314
Government Camp	3,980 ft	May 27	Jun 14	Oct 9	Sep 18	134
Grants Pass	932 ft	Apr 8	May 1	Oct 28	Oct 8	201
Grizzly	3,635 ft	A freeze is possible in any month
Halfway	2,653 ft	May 15	Jun 2	Sep 24	Sep 9	130
Hart Mtn Refuge	5,618 ft	A freeze is possible in any month
Headworks Portland Wtr B	748 ft	Mar 27	Apr 20	Nov 18	Oct 26	239
Heppner	1,885 ft	Apr 26	May 11	Oct 19	Oct 3	174
Hermiston 2 Nw	460 ft	Apr 27	May 11	Oct 7	Sep 25	163
Hermiston Muni Ap	641 ft	Apr 26	May 10	Oct 10	Sep 25	167
Honeyman Sp	115 ft	Mar 28	Apr 21	Nov 22	Oct 28	237
Hood Rvr Exp Stn	500 ft	Apr 20	May 9	Oct 13	Sep 30	177
Howard Prairie Dam	4,567 ft	Jun 8	Jun 25	Sep 24	Sep 6	108
Huntington	2,110 ft	Apr 23	May 7	Oct 13	Oct 1	172
Idleyld Park 4 Ne	1,080 ft	Apr 27	May 15	Oct 19	Sep 26	176
Illahe	348 ft	Mar 30	May 2	Nov 17	Oct 20	233
John Day 35 Wnw	2,245 ft	Apr 30	May 14	Oct 14	Oct 1	167
John Day	3,063 ft	May 28	Jun 15	Sep 18	Sep 2	113
Joseph	4,184 ft	May 24	Jul 6	Oct 1	Sep 10	126
Keno	4,128 ft	Jun 5	Jun 22	Sep 20	Sep 6	107
Kent	2,710 ft	May 15	Jun 6	Oct 11	Sep 27	147
Klamath Falls Intl Ap	4,084 ft	Jun 9	Jun 26	Sep 18	Sep 4	99
La Grande	2,755 ft	May 6	May 26	Oct 1	Sep 17	146
Lacomb 3 Nne	520 ft	Apr 26	May 11	Oct 24	Oct 5	184
Lakeview 2 Nnw	4,890 ft	Jun 4	Jun 22	Sep 17	Aug 27	102
Langlois #2	90 ft	Mar 16	Apr 15	Nov 29	Nov 1	258
Laurel Mtn	3,589 ft	May 20	Jun 8	Oct 23	Oct 5	157
Leaburg 1 Sw	675 ft	Apr 3	May 2	Nov 11	Oct 21	220
Lebanon	330 ft	Mar 14	Apr 14	Nov 18	Oct 27	248
Lemolo Lake 3 Nnw	4,077 ft	Jun 1	Jun 21	Sep 23	Aug 31	115
Long Creek	3,740 ft	Jun 5	Jun 25	Sep 14	Aug 30	99
Lookout Pt Dam	712 ft	Mar 7	Apr 2	Nov 27	Nov 1	263
Lost Creek Dam	1,580 ft	Apr 29	May 19	Oct 17	Oct 1	171
Madras 2 N	2,443 ft	May 19	Jun 7	Oct 4	Sep 20	136
Madras	2,230 ft	A freeze is possible in any month
Malheur Branch Exp Stn	2,260 ft	Apr 23	May 9	Oct 13	Oct 1	173
Malheur Refuge Hq	4,118 ft	May 29	Jun 17	Sep 18	Sep 2	113
Mapleton	17 ft	Feb 15	Mar 19	Dec 9	Nov 9	306
Marion Forks Fish Hatchery	2,475 ft	May 15	Jun 11	Sep 30	Sep 10	134
Mc Dermitt 26 N	4,464 ft	Jun 4	Jun 20	Sep 26	Sep 5	113
Mc Minnville	155 ft	Apr 5	Apr 27	Nov 7	Oct 20	216
Mckenzie Rvr Rs	1,478 ft	May 1	May 19	Oct 10	Sep 20	159
Mcminnville Muni Ap	159 ft	Apr 15	May 6	Oct 26	Oct 5	195
Mcnary Dam #2	361 ft	Mar 30	Apr 20	Nov 4	Oct 21	217
Meacham	3,723 ft	A freeze is possible in any month
Medford Rogue Vly Ap	1,297 ft	Apr 8	Apr 30	Oct 29	Oct 14	204
Milton Freewater	970 ft	Mar 25	Apr 16	Oct 29	Oct 12	218
Mitchell 2 E	3,320 ft	May 22	Jun 11	Oct 4	Sep 16	135
Molalla 7ne	647 ft	Mar 16	Apr 12	Nov 19	Oct 31	247
Monument 2	1,995 ft	May 9	May 26	Sep 27	Sep 9	139
Moro	1,870 ft	May 12	May 31	Oct 4	Sep 16	143
N Willamette Exp Stn	150 ft	Mar 18	Apr 10	Nov 13	Oct 27	243
Nature Park-Beaverton	185 ft	Feb 11	Mar 5	Dec 5	Nov 11	303
Newport 1 Se	8 ft	Feb 19	Mar 23	Dec 16	Nov 14	306
Newport 3n	220 ft	Mar 12	Apr 16	Dec 10	Nov 7	271
Newport	122 ft	Mar 21	Apr 12	Nov 27	Nov 1	252
North Bend Rgnl Ap	17 ft	Feb 21	Mar 25	Dec 9	Nov 12	294
Nyssa	2,175 ft	Apr 18	May 4	Oct 18	Oct 4	182
O O Rch	4,136 ft	Jun 11	Jul 1	Sep 6	Aug 19	88
Oakridge Fish Hatchery	1,275 ft	Apr 24	May 11	Oct 24	Oct 2	183
Odell Lake-East	4,800 ft	A freeze is possible in any month
Ontario Ksrv	2,145 ft	Apr 22	May 7	Oct 9	Sep 26	168
Ontario Muni Ap	2,190 ft	Apr 21	May 8	Oct 14	Sep 29	176
Oregon City	167 ft	Mar 18	Apr 11	Nov 18	Oct 30	244
Otis 2 Ne	150 ft	Apr 4	May 3	Nov 16	Oct 26	227
Owyhee Dam	2,400 ft	May 7	May 27	Oct 5	Sep 19	150
Paisley	4,360 ft	Jun 6	Jun 28	Sep 14	Aug 27	98
Parkdale 1 Nne	1,520 ft	May 13	Jun 3	Oct 3	Sep 15	142
Paulina	3,684 ft	A freeze is possible in any month
Pelton Dam	1,410 ft	May 5	May 29	Oct 7	Sep 24	154
Pendleton Branch Exp Stn	1,487 ft	May 12	Jun 2	Sep 27	Sep 8	135
Pendleton Dwtn	1,040 ft	Apr 22	May 8	Oct 9	Sep 27	170
Pendleton Wfo	1,510 ft	Apr 14	May 5	Oct 22	Oct 7	188
Pendleton	1,515 ft	Apr 26	May 10	Oct 16	Oct 1	174
Pilot Rock 1 Se	1,720 ft	May 7	May 28	Oct 4	Sep 16	147
Port Orford #2	42 ft	Feb 17	Mar 19	Dec 3	Nov 8	292
Portland Intl Ap	19 ft	Mar 13	Apr 1	Nov 19	Oct 29	247
Portland Kgw-Tv	159 ft	Feb 25	Mar 21	Dec 1	Nov 10	280
Portland Troutdale Ap	29 ft	Mar 16	Apr 12	Nov 20	Oct 30	250
Portland Wfo	21 ft	Mar 13	Apr 5	Nov 22	Nov 3	251
Portland-Hillsboro Ap	204 ft	Apr 16	May 3	Oct 23	Oct 3	191
Powers	230 ft	Mar 21	Apr 12	Nov 14	Oct 21	241
Prineville	2,876 ft	Jun 1	Jun 22	Sep 22	Aug 31	113
Prospect 2 Sw	2,482 ft	May 19	Jun 9	Oct 3	Sep 13	136
Redmond Roberts Fld	3,043 ft	Jun 9	Jun 26	Sep 14	Sep 1	98
Rex 1 S	515 ft	Mar 21	Apr 19	Nov 22	Nov 4	241
Richland	2,215 ft	May 10	May 29	Oct 1	Sep 16	141
Riddle	680 ft	Mar 31	Apr 27	Nov 6	Oct 11	221
Riley 10 Wsw	4,583 ft	Jun 11	Jul 3	Sep 11	Aug 23	87
Riverside 7 Ssw	3,380 ft	Jun 7	Jun 28	Sep 6	Aug 22	89
Rockville 5 N	3,670 ft	May 29	Jun 23	Sep 14	Sep 1	108
Rome 2 Nw	3,405 ft	Jun 11	Jul 3	Sep 10	Aug 27	88
Rome St Ap	4,050 ft	May 26	Jun 13	Sep 21	Sep 5	117
Roseburg Kqen	425 ft	Mar 23	Apr 16	Nov 18	Oct 24	237
Roseburg Rgnl Ap	525 ft	Mar 19	Apr 13	Nov 20	Oct 27	245
Ruch	1,550 ft	May 4	May 23	Oct 13	Sep 22	160
Saint Helens Rfd	269 ft	Apr 18	May 26	Nov 7	Oct 21	201
Salem Mcnary Fld	205 ft	Apr 3	Apr 27	Nov 1	Oct 16	212
Santiam Junction	3,750 ft	A freeze is possible in any month
Scappoose Ind Ap	55 ft	Apr 10	May 1	Nov 2	Oct 16	209
Scotts Mills 9 Se	2,315 ft	Apr 27	May 17	Nov 4	Oct 18	190
Seaside	10 ft	Apr 2	Apr 29	Nov 12	Oct 18	223
Seneca	4,660 ft	A freeze is possible in any month
Sexton Summit	3,832 ft	May 16	Jun 7	Oct 30	Oct 8	164
Silver Creek Falls	1,350 ft	Apr 30	May 15	Oct 22	Oct 2	174
Silver Lake Rs	4,385 ft	A freeze is possible in any month
Silverton	408 ft	Mar 28	Apr 19	Nov 10	Oct 25	227
Sisters	3,180 ft	A freeze is possible in any month
Squaw Butte-Northern Great Bas	4,660 ft	Jun 11	Jun 28	Sep 28	Sep 3	107
Stayton	425 ft	Mar 29	Apr 18	Nov 6	Oct 20	222
Summer Lake 1 S	4,192 ft	Jun 8	Jun 25	Sep 15	Aug 31	96
Sunriver	4,180 ft	A freeze is possible in any month
The Dalles	150 ft	Apr 14	May 1	Oct 23	Oct 5	191
The Poplars	4,310 ft	A freeze is possible in any month
Three Lynx	1,120 ft	Apr 5	Apr 30	Nov 8	Oct 20	217
Tillamook 6se	140 ft	Apr 5	May 4	Nov 4	Oct 13	219
Tillamook	12 ft	Apr 22	May 13	Oct 21	Sep 27	183
Toketee Falls	2,060 ft	Apr 29	May 16	Oct 18	Sep 28	171
Troutdale	33 ft	Mar 26	Apr 21	Nov 17	Oct 26	237
Union	2,777 ft	May 11	May 31	Sep 26	Sep 9	136
Vale	2,240 ft	May 8	Jun 7	Sep 29	Sep 11	140
Vernonia #2	625 ft	May 8	May 29	Oct 1	Sep 11	144
Wallowa	2,923 ft	Jun 7	Jul 7	Sep 9	Aug 24	91
Westfall	3,040 ft	May 7	May 28	Oct 3	Sep 19	147
Wickiup Dam	4,358 ft	Jun 7	Jul 2	Sep 18	Sep 3	100
Winchester Bay Coast Grd	8 ft	Mar 25	Apr 27	Nov 24	Oct 27	249
Winchester	460 ft	Mar 31	Apr 26	Nov 5	Oct 16	215
Yachats	50 ft	Feb 19	Mar 23	Dec 11	Nov 12	303

Plan your garden with these dates

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Questions

When is the last frost in Oregon?

It depends on where you are. The typical last spring frost at Oregon's NOAA stations ranges from January 31 to June 11, and half of them have had it by April 22. Enter your ZIP code above for the station nearest you.

When is the first frost in Oregon?

Typically between September 5 and December 27, depending on the station; the median is October 22. Plan fall crops back from your own station's date.

What do "typical" and "safer" mean?

With the typical (50%) last-frost date, half of years still have a frost after it. With the safer (10%) date, only one year in ten does. In fall it's the other way around: the safer date is the earlier one.

Sources

NOAA National Centers for Environmental Information, U.S. Climate Normals 1991–2020 (annual/seasonal, by station: freeze dates at 32 °F)

Oregon Frost Dates

Every station in Oregon

Plan your garden with these dates

Questions

Other states

Sources