Marine Weather and Tide Forecast for Yoncalla, OR

FXUS66 KMFR 111125 AFDMFR

Area Forecast Discussion National Weather Service Medford OR 425 AM PDT Sat Apr 11 2026

DISCUSSION
It was another active afternoon, and locations received 0.10"-0.25" in some west side Valleys, including Medford yesterday. The next band of showers will move in between 4-6 AM from the south. The most likely time for thunderstorms will be between 12 AM and 6 PM, and this will once again be concentrated on Jackson, Josephine, and Douglas counties. The probability for thunderstorms will reach 30- 40% during the afternoon. Coverage will be scattered to widespread while moving north through the afternoon and evening.

Snowfall will be concentrated in Northern California (Siskiyou County) tonight. Snow levels will fall to 5,000', and with snowfall tonight through Sunday morning expected to near 4-8 inches, a Winter Weather Advisory has been issued. Please see WSWMFR for more details.

The upper low will begin to move eastward through Northern California on Sunday. There will be shower activity with a slight chance of thunderstorms in Northern California and from Josephine County east through western Klamath County. Between Sunday morning and Monday morning, snow levels will be around 4,500'-5,000' and between 4-6 inches are possible at Crater Lake.

Monday onward:

The relatively cooler and unstable air in this low's wake will keep the atmosphere unstable. Scattered showers will likely continue into Monday with a 40 to 60 percent chance of rain.
High temperatures will cooler than normal and in the upper 50's for many valley locations. However, the cloud cover will keep temperatures in the upper 30's and lower 40's overnight, so we're not anticipating any frost or freeze products.

Otherwise, the extended forecast isn't looking too eventful.
Models are showing a deep trough and well defined cold front pushing down from the north around Wednesday. This should result in more snow in the mountains and cooler and wetter than normal conditions Wednesday and Thursday.
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