Roseburg North, OR Weather

Key Messages

* Persistent low pressure this week brings active/beneficial weather with mainly low impacts.

* Beneficial rainfall along/west of Cascades today through Tuesday. Snow levels lower to around 5000-5500 ft tonight, bringing 2-4" of snow around Diamond/Crater Lake area.

* Temperatures trend cooler Monday, remaining steady through the week and hovering around 10-15 degrees below normal.

* Low pressure for the latter half of the week into the weekend brings continued shower chances mainly west of the Cascades.

Discussion

Low pressure is moving into the Pacific Northwest today, pushing a cold front onshore this afternoon. Gusty winds will develop across the region this afternoon/evening ahead and with this front. This isn't a particularly strong system, so winds will remain below advisory criteria, but expect gusts of 15-25 mph to be common with gusts up to 35 mph across the higher terrain. The band of pre- frontal rain currently moving onshore is expected to only impact areas along and west of the Cascades before falling apart tonight, but then as the upper level trough passes overhead, shower chances spread to nearly the entire area by late Monday morning. Expected precipitation amounts through early Monday morning range between 0.50"-0.75" along the coast and 0.25"-0.50" from the Cascades westward, though with the usual lower amounts for the Rogue Valley - 0.10"-0.20". Shower activity Monday could bring another 0.10" for areas along the coast and north of the Rogue Umpqua Divide.

Snow levels will lower tonight into Monday morning, dropping to around 5000-5500 ft. This should keep any heavy snowfall above the passes during the more steady precipitation, but we do expect a few inches of accumulation overnight tonight for the Cascades north of Highway 140. 1-3" should be the more common amounts, but 3-5" is possible for the higher peaks around Crater/Diamond Lakes. While it's not the first snow of the season for Crater Lake, it has been some time since then, so be prepared for some wintry travel if crossing the Cascades on Highways 62/230/138/58 tonight. Shower activity Monday could bring another inch or two across the higher peaks as snow levels trend higher toward 6000 ft into Tuesday.

A second, weaker trough swings through overhead Monday night into Tuesday. This will bring another quick shot round of shower activity, primarily along the coast and north of the Rogue-Umpqua Divide. There could be another round of light snow around Crater Lake northward, but probably nothing more than an inch. Shower activity tapers off late Tuesday, and dry conditions are likely for most areas through Wednesday. Persistent onshore flow could maintain showers for the coast and north of the Umpqua Divide, but most should see a dry day.

Low pressure settles over the eastern Pacific/Pacific Northwest for the latter half of the week and into the weekend. This low looks to linger just offshore for the remainder of the week, then elongate and sort of split Friday into Saturday. The northern portion of the energy lingers over the Canadian Providences while the southern portion swings through sometime Saturday/Sunday. With the low lingering just offshore, this leads to drier conditions persisting Thursday and Friday, and possibly into Saturday depending on how fast that southern tier of energy swings through. There are position differences, however, on how close to shore that low pressure lingers, so it's possible we see more showery weather continue during this time as well. Currently the forecast maintains a broad 20-40% chance of showers Thursday through Saturday. This is a fairly cool air mass settling into the region, and snow levels are forecast to hover around 4000 ft, even down to 3000 ft at times Thursday into the weekend. We're not anticipating widespread precipitation, however, so this will limit any wintry impacts.

High temperatures this week will be fairly steady and average around 10-15 degrees below normal...highs in the mid 50s for the West Side, mid 40s for the East Side. Low temperatures will be quite chilly, especially east of the Cascades. Despite the forecast indicating low temperatures in the teens for the East Side, ample cloud cover should keep low temperatures several degrees warmer than what is currently advertised. Stay tuned for updates as details become more clear on precipitation amounts/locations...especially as we near the night for spooky festivities.

Aviation

26/00Z TAFs... A front moving inland will bring rain/rain showers to the area tonight and Monday. Initially, these will start along/near the coast and the Umpqua Basin late this afternoon/early this evening and spread eastward overnight continuing through Monday. Coverage will likely become more scattered on Monday afternoon.

Ceilings will start to deteriorate and bring widespread MVFR conditions from the Cascades west with areas of IFR along the coast. East of the Cascades, scattered MVFR conditions are expected late tonight/Monday morning. Then, Monday afternoon, expect a mix of VFR with MVFR in showers. Except for areas along the coast where breezy winds are expected, we are not anticipating wind speeds to be too strong inland. Lastly, low level wind shear will fall just shy of reaching the 30 knot difference in the lowest 2000 ft tonight and early Monday morning, but wanted to make note of a jet around 2000- 2500ft could be around 25 to 30 knots.

Marine

Updated 1200 PM PDT Sunday, October 25, 2026...A cold front is passing through the region today, bringing gusty south to southwest winds and showers, with isolated thunderstorms possible north of Cape Blanco this evening. Northwest swell builds in today, bringing steep swell dominated seas for all areas through at least Monday night. Winds ease Monday, but steep seas will persist into Tuesday morning. Conditions improve late Tuesday, but unsettled weather will continue through the week.