Frost dates 2026–2027

Frost dates for The Dalles, Oregon

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at The Dalles Municipal Airport, 1.6 mi away (close match).

Last spring frostApr 11
First fall frostOct 26
197 frost-free days
Last spring frostApr 111 year in 10 after Apr 28
First fall frostOct 261 year in 10 by Oct 9
Growing season197 daysbetween median 32°F dates
Hardiness zoneZone 8a10 to 15°F average extreme low

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Will it freeze in The Dalles in the next 7 nights?

No overnight lows at or below 32°F are forecast in The Dalles during the next 7 nights in the available NWS frost forecast.

Tonight: forecast low 38°F. Above 36°F.

NWS forecast period: Thu, Nov 5, 6:00 PM PST to Fri, Nov 6, 6:00 AM PST.

No nights at or below 36°F in the National Weather Service forecast for the next 7 nights.

Overnight lows from the National Weather Service forecast for this location. This covers the available forecast window, not the first freeze of the whole season. Frost can form above 32°F on clear, calm nights.

Frost and freeze probabilities

Freeze dates shift from year to year. Spring percentages describe the chance of a freeze after the stated date; fall percentages describe the chance of a freeze by that date. The 10% spring date is the cautious one: a later freeze happens about 1 year in 10.

These dates describe historical probabilities, not this year’s forecast or the earliest and latest possible freezes. Different weather stations or probability thresholds can produce different published dates for the same city.

Average first hard freeze in The Dalles

The median first fall hard-freeze date (28°F) is November 7, from NOAA’s 1991–2020 Climate Normals at The Dalles Municipal Airport. This is the 50% probability date, not a forecast for this year.

TemperatureLast spring date
90% · 50% · 10% chance of a later freeze
First fall date
10% · 50% · 90% chance of an earlier freeze
Season
36°F frost possible Apr 13 · Apr 28 · May 12 Oct 1 · Oct 13 · Oct 28 167 days
32°F freeze Mar 24 · Apr 11 · Apr 28 Oct 9 · Oct 26 · Nov 10 197 days
28°F hard freeze Feb 27 · Mar 16 · Apr 9 Oct 22 · Nov 7 · Nov 28 233 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USW00024219. How to read these probabilities.

Average high temperature by month

1991–2020 normals at The Dalles Municipal Airport

Average low temperature by month

Months with lows near or below freezing carry frost risk

Where these frost dates come from

The frost dates for The Dalles, OR come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: The Dalles Municipal Airport (station USW00024219, elevation 235 ft), 1.6 mi from The Dalles. Local conditions (valleys, hilltops, distance to water, city heat) can shift frost dates by days or weeks. The hardiness zone is from the 2023 USDA Plant Hardiness Zone Map (USDA ARS and Oregon State University PRISM). See our methodology.

Frost dates near The Dalles

CityDistanceLast spring frostFirst fall frost
Hood River, OR 20 mi Apr 20 Oct 13
Sandy, OR 56 mi Mar 27 Nov 18
Washougal, WA 58 mi Mar 26 Nov 17
Troutdale, OR 60 mi Mar 26 Nov 17
Estacada, OR 61 mi Mar 27 Nov 14
Camas, WA 62 mi Mar 16 Nov 20
Fairview, OR 62 mi Mar 16 Nov 20
Gresham, OR 63 mi Mar 16 Nov 20
Madras, OR 65 mi May 19 Oct 4
Happy Valley, OR 66 mi Mar 18 Nov 18

Frequently asked questions

When is the last frost in The Dalles?

On average, the last spring frost (32°F) in The Dalles is around April 11. In about 1 year in 10 it comes after April 28, and in 9 years in 10 it comes after March 24.

When is the first frost in The Dalles?

The first fall frost (32°F) usually arrives around October 26. There’s a 10% chance of a freeze by October 9 and a 90% chance by November 10.

Can it frost in The Dalles after the last frost date?

Yes. Frost can form on clear, calm nights even when the air stays above 32°F. Temperatures of 36°F or lower, cold enough for frost on exposed plants, have a 50% chance of occurring after April 28.

What growing zone is The Dalles?

The Dalles is in USDA Plant Hardiness Zone 8a (average annual extreme minimum temperature 10 to 15°F), based on the 2023 USDA map for ZIP code 98617. See growing zones in Oregon.

More: all Oregon frost dates · Oregon growing zones · frost vs. freeze