textproduct: Medford

DISCUSSION

With an upper trough's influence decreasing as it moves eastward, daytime highs decrease but remain 5-10 degrees above normal. This afternoon and evening, modest instability and moisture will make isolated thunderstorms possible for eastern Siskiyou into Modoc County, as well as in Lake and eastern Klamath counties. Thunderstorm chances ease later in the evening.

Seasonal warmth is forecast for Thursday ahead of a cold front arriving late Thursday night and moving over the area through the day Friday. Cold air behind the front will bring below normal temperatures across the area and chances for light rainfall to Oregon counties. Coastal ranges the the Cascades north of Crater Lake may see a quarter inch of rainfall. The Umpqua Valley may see up to one-tenth of an inch. This front will also bring breezy to gusty winds, especially east of the Cascades. The strongest winds are forecast to be over the Cascades, along Winter Rim, and over the Warner Mountains. Gusts in these areas look to approach but not exceed Advisory criteria. For Friday night into Saturday morning, Frost/Freeze possibilities may be present in northern Lake and Klamath counties.

Being the front, a low pressure system dig into the upper trough and swings over the area over the weekend. This looks to make Saturday the coolest day of the forecast period, while temperatures warm slightly on Sunday as the low heads eastward. Rain showers are expected to continue over Coos and Douglas counties, especially over the Cascades foothills. Amounts remain unimpactful, with some parts of the foothills currently forecast to get one-third of an inch of rainfall over the weekend. Coverage of frost/freeze conditions east of the Cascades may expand on Saturday and Sunday nights.

For Monday and beyond, significant divergence in model patterns makes any detailed forecasting difficult. Generally, an upper trough shifts slightly eastward, bringing northwest flow to the area that would bring fairly mild weather to start next week. -TAD

AVIATION...24/12Z TAFs

Marine stratus remains in place along the Oregon coast early this morning, bringing LIFR flight levels. This layer looks to dissolve through the morning, with a periods of VFR levels possible along the coast late this morning and through the afternoon before stratus starts to rebuild in the evening.

Inland areas look to remain at VFR levels with only normal diurnal breezes. Chances for isolated thunderstorms are present over Siskiyou and Modoc counties as well as east of the Cascades this afternoon and evening, but area terminals should be generally unaffected. -TAD

MARINE...Updated 200 AM PDT Wednesday, June 24, 2026

Northerly winds south of Cape Blanco will pick up steadily today, sustaining steep seas. Winds start to ease on Thursday, with below advisory seas possible by Friday morning. A cold front is likely to bring moderate south winds becoming northwest, light rain and a modest increase in fresh west-northwest swell Friday into Saturday. Steep westerly swell may arrive over the weekend.

MFR WATCHES/WARNINGS/ADVISORIES

OR...CA...None.

PACIFIC COASTAL WATERS...Small Craft Advisory until 8 PM PDT Thursday for PZZ356-376.