When is the last frost in Eugene, OR?

The average (50% probability) last spring frost in Eugene is April 11, based on NOAA 1991–2020 normals. A 1-in-10 risk remains until May 9.

When is the first frost in Eugene?

The average first fall frost in Eugene is October 23, with a growing season of about 196 days.

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Eugene, Oregon frost dates

Average last spring frost: April 11. Average first fall frost: October 23. That gives a growing season of about 196 days. For frost-tender plants, a safer planting date is May 9, after which a freeze happens in only 1 year in 10.

Last frost (50%)

Apr 11

1-in-10 risk after May 9

First frost (50%)

Oct 23

1-in-10 risk before Oct 6

Growing season

196 days

median frost-free days

Hard freeze (28°F)

Mar 3

median last 28°F in spring

Frost risk by date

Chance of frost	Spring: frost after	Fall: frost before
90%	March 15	November 13
70%	March 29	October 31
50%	April 11	October 23
30%	April 25	October 15
10%	May 9	October 6

Read the spring column like this: there is a 10% chance of a 32°F freeze after May 9. These are NOAA probabilities for the Eugene Mahlon Sweet Airport weather station (USW00024221, elevation 108 m), 1991–2020.

Eugene vegetable planting calendar

Dates count from the 50% last-frost date (April 11). For tomatoes, peppers and other frost-tender crops, waiting until the 10% date (May 9) is the cautious choice.

Crop	Start seeds indoors	Plant out
Beans	Mar 21	Apr 18 (usually sown directly in the garden)
Broccoli	Jan 31	Mar 14
Brussels sprouts	Jan 31	Mar 14
Cabbage	Jan 24	Mar 7
Cauliflower	Feb 14	Mar 28
Sweet corn	Mar 14	Apr 11 (usually sown directly in the garden)
Cucumbers	Mar 28	Apr 18
Kale	Jan 24	Mar 7
Leeks	Dec 27	Mar 7
Lettuce	Feb 21	Mar 28
Melons	Apr 4	Apr 25
Onions	Dec 20	Feb 28 (from seed; sets and transplants go out at the same time)
Peas	Feb 14	Mar 14 (usually sown directly in the garden)
Peppers	Feb 28	Apr 25
Squash	Apr 4	Apr 25
Tomatoes	Feb 14	Apr 11

Offsets from Oregon State University Extension's seed-starting table. "Plant out" means transplant, or sow directly for crops usually grown from seed.

Fall frost and season extension

The first fall freeze usually arrives around October 23. There's a 1-in-10 chance it comes before October 6. Harvest tender crops such as basil, tomatoes, peppers and squash before then, or cover them on cold nights. Cool-season crops like kale, cabbage and Brussels sprouts handle light frost, and often taste sweeter after it. A hard freeze (28°F) typically comes around November 11.

Nearby cities

City	Last frost (50%)	First frost (50%)	Distance
Portland, OR	Mar 13	Nov 19	~170 km
Medford, OR	Apr 8	Oct 29	~196 km
Yakima, WA	May 8	Oct 4	~345 km
Seattle, WA	Mar 2	Nov 23	~375 km
Boise, ID	Apr 24	Oct 21	~560 km
Reno, NV	Apr 20	Oct 23	~584 km

More: all Oregon frost dates