textproduct: Medford

KEY MESSAGES

* Cooler than normal temperatures continue today. East of the Cascades, a Freeze Warning is in place overnight/this morning. Temperatures trend warmer but areas of frost/local freezing temperatures are possible again early Tuesday morning.

* A strong warming and drying trend is expected Tuesday through Thursday with above normal high temperatures. Highs are expected to peak in the mid 80s to mid 90s on Wednesday.

* Upper trough digging into PacNW late this week, but moisture is limited and the most likely result is a dry front crossing the area Fri/Fri night. Expect some enhanced W-SW breezes in advance of this system Thu pm/Fri, with cooler temperatures Friday into the weekend. Precipitation chances are low (5-15% range) and mainly across NW sections (Cascades N&W).

DISCUSSION

An upper trough is shifting northeast of the area today. Overall, expect dry weather today with near normal temperatures. Areas of low clouds and fog along the coast and in the Umpqua Basin will clear later this morning. Since the air mass is pretty cold, areas east of the Cascades will have temperatures drop into the upper 20s and lower 30s. A Freeze Warning /PDXNPWMFR/ remains in effect for these areas through early this morning.

High pressure builds in Tuesday through Thursday. This will bring a warming and drying trend to the area. Breezy to gusty east to Northwest winds will set up over the coastal mountains Monday night into Tuesday morning due to a strengthening surface thermal trough along the coast. This pattern continues Tuesday night and Wednesday. This will lead to some poor overnight RH recoveries for upper slopes/ridges, mainly for the coastal mountains and for mountains in western Siskiyou County through at least Wednesday. Meanwhile, a strong inversion will bring continued areas of frost and local freezing conditions to areas east of the Cascades, especially valleys in northern Klamath and northern Lake counties Monday night and early Tuesday morning. But, the coldest portion of the air mass aloft will have shifted east of our area by then. So, expect mainly areas of frost and locally freeze conditions near Chemult and other typically colder spots. Temperatures warm to near or above normal for all areas Tuesday afternoon, then above normal for both Wednesday and Thursday. Highs in the mid 80s to mid 90s are expected across inland areas Wednesday with similar conditions Thursday.

An upper low will approach the Pacific Northwest Thursday night and early Friday, then move over the and move over the region Friday night and Saturday. Model solutions continue to show mostly dry weather over the area with a low chance (10-15%) for showers, mainly along the coast and into Douglas County. The low shifts eastward Saturday night and Sunday. Overall, expect a shift towards cooler temperatures with highs lowering into the mid 60s to upper 70s by Saturday. The trough should also allow for a modest increase in W-SW breezes in advance of it (beginning Thu pm, but peaking Fri pm/eve).

AVIATION...07/12Z TAFs

IFR and LIFR in low clouds and fog is present along the coast north of Cape Blanco and in the Umpqua Basin, including at North Bend (OTH) and Roseburg (RBG). These conditions will persist through mid morning then lift to VFR around 17z. Local IFR/LIFR may redevelop along coastal valleys Monday night, but is expected to be less widespread. Elsewhere, for inland areas, expect VFR through the TAF period.

MARINE...Updated 100 AM PDT Monday, September 7, 2026

A thermal trough develops today, bringing gusty north winds and steep wind seas south of Port Orford. Steep seas extend to Cape Arago Monday night, and across the waters Tuesday through Tuesday night. Winds briefly diminish Wednesday, but steep seas may linger. Then, gusty north winds and steep seas may return Thursday into Friday, mainly for areas south of Cape Blanco.

MFR WATCHES/WARNINGS/ADVISORIES

OR...Freeze Warning until 9 AM PDT this morning for ORZ029>031.

CA...Freeze Warning until 9 AM PDT this morning for CAZ082-084-085.

PACIFIC COASTAL WATERS...Small Craft Advisory from 8 AM this morning to 5 AM PDT Wednesday for PZZ356-376.

Small Craft Advisory from 11 PM this evening to 5 AM PDT Wednesday for PZZ350-370.