THE WEATHER BEAT · FROM THE ROCK SHOP · OCT 11

Frost advisories from Puget Sound to Portland and freeze watches east of the Cascades: the first cold nights of fall, and the shirt for them

Seven Weather Service offices posted frost advisories and freeze watches across the West tonight. What they say, and the Rock Shop shirt for the turn of.

By the Weather Rock October 11, 2026, 8:53 p.m. · 7 min read

The Beauties of its Own T-Shirt from the Rock Shop. Photo: The Rock Shop, Beauties of its Own T-Shirt.

Key points

Frost advisories from the National Weather Service offices in Seattle, Portland, Eureka and Pocatello cover early Monday, Oct. 12. Lows in the products run 30 to 36 degrees, from Puget Sound and the Portland metro to interior Humboldt County and the Snake River Plain.
Freeze watches from Spokane, Pendleton and Las Vegas follow for Monday night into Tuesday morning. Lows as low as 23 are in the Grande Ronde Valley product, and 29 at Moses Lake and Lewiston.
The Rock Shop's Beauties of its Own shirt is made for a change of season like this one. The shop is how the forecast on this site stays free.

The first cold nights in the Northwest, in the Weather Service's own words

The West has been busy this week with a tropical storm's rain and a Montana snowstorm. This evening the Weather Service turned to something quieter: the first cold nights of fall. Seattle's advisory covers Olympia, southern Puget Sound and the lowlands of Pierce and southern King counties, with lows "as low as 30 to 36 degrees Monday morning." Portland's covers the Willamette Valley, the Portland and Vancouver metros and the Cascade foothills, with lows of 33 to 36. Both offices run them from midnight to 8 a.m. PDT and give the same plain warning to gardeners: "Sensitive outdoor plants may be killed if left uncovered."

The second night looks colder east of the Cascades. Spokane has a freeze watch out for Moses Lake, Ephrata, Quincy and Othello, and another for Lewiston, Clarkston and the Okanogan Valley from Omak to Oroville. Both carry "sub-freezing temperatures as low as 29F possible" from Monday evening through Tuesday morning. Pendleton's watches cover the Lower Columbia Basin and the Blue Mountain foothills at 30, Wallowa County at 26 and the Grande Ronde Valley at 23. Those products warn that a freeze "could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing." In California, Las Vegas has a freeze watch for the northern Owens Valley at 30.

Pocatello's advisory has one honest line worth reading. It covers the Snake River Plain at 33 degrees, then adds: "Cloud cover and precipitation will make the temperature forecast a bit tricky overnight so confidence is less than desired and some spots in these zones could briefly drop below freezing." Clouds act like a lid over the ground at night. Where they break, the ground loses its heat to the sky and frost can form. Where they hold, it may not. The Weather School lesson on [morning frost](/journal/explainers/morning-frost) explains how frost grows straight from the air onto a cold surface. This desk wrote about the old saying [clear moon, frost soon](/journal/beat/clear-moon-frost-soon-the-proverb-and-the-shirt/) on Oct. 1. Tonight the same lesson is playing out on the West Coast.

Office	Area	Product	Low in the product	When
NWS Seattle WA	Olympia and southern Puget Sound, Pierce and southern King lowlands, Hood Canal, northern Washington coast	Frost Advisory	30 to 36	midnight to 8 a.m. PDT Mon
NWS Portland OR	Portland and Vancouver metros, Willamette Valley lowlands, Cascade foothills, Cowlitz and Clark lowlands	Frost Advisory	33 to 36	midnight to 8 a.m. PDT Mon
NWS Eureka CA	Interior Humboldt, northern Trinity, northwestern interior Mendocino	Frost Advisory	as low as 33	1 a.m. to 9 a.m. PDT Mon
NWS Pocatello ID	Upper and Lower Snake River Plain	Frost Advisory	as low as 33	3 a.m. to 9 a.m. MDT Mon
NWS Spokane WA	Moses Lake area; Lewiston area, Garfield and Asotin, Okanogan Valley	Freeze Watch	as low as 29	Mon evening to Tue morning
NWS Pendleton OR	Lower Columbia Basin, Blue Mountain foothills, North Central Oregon	Freeze Watch	as low as 30	Mon evening to Tue morning
NWS Pendleton OR	Wallowa County	Freeze Watch	as low as 26	Mon evening to Tue morning
NWS Pendleton OR	Grande Ronde Valley	Freeze Watch	as low as 23	Mon evening to Tue morning
NWS Las Vegas NV	Northern Owens Valley	Freeze Watch	as low as 30	late Mon night to Tue morning

*Source: NWS products issued Oct. 11, 2026, by Seattle (7:34 a.m. PDT), Portland (10:00 a.m. PDT), Pocatello (11:16 a.m. MDT), Pendleton (2:04 p.m. PDT), Las Vegas (2:08 p.m. PDT), Eureka (3:09 p.m. PDT) and Spokane (4:55 p.m. PDT), as read at 8:50 p.m. EDT.*

The shirt

The Rock Shop sells a shirt for the turn of the year: Beauties of its Own, a line the shop credits to Dickens. It's for the person who notices the first morning the windshield needs scraping and doesn't mind it much. It suits the change-of-season weeks: the first frost on the grass, the first cold walk to the car, the tomatoes brought in the night before. The shop is how this site pays for itself. Buying from it keeps the forecast free, with no ads and no paywall.

This is an evening summary, not emergency information. For live warnings see weather.gov and your local officials.

The rock's live forecast for the places in this story