Honestly, if you've spent more than a week in the Willamette Valley, you know the drill. You wake up, look out the window at a wall of gray, and wonder if you should grab the heavy parka or just settle for the "Oregon tuxedo"—a fleece vest and a rain shell.
Predicting the Eugene Oregon 14 day forecast is basically like trying to guess which lane of I-5 is going to move faster during rush hour. It's a gamble. But right now, we’re looking at a specific window in January 2026 that is defying a lot of the "rainy Eugene" stereotypes.
Today, Sunday, January 18, we’re sitting at a crisp 34°F. It’s cloudy, kind of damp, but not the torrential downpour you’d expect for the middle of winter. The wind is barely a whisper at 3 mph coming from the northwest. If you’re heading out to Alton Baker Park or grabbing a coffee at 5th Street, you’re looking at a high of 46°F today. It’s "light jacket" weather for locals, but probably "Arctic survival" weather for anyone visiting from California.
The Two-Week Reality Check
So, what does the rest of the Eugene Oregon 14 day forecast actually look like? Most people assume it’s just 14 straight days of raindrops on the iPhone weather app. Not this time.
We are currently in a weirdly dry stretch. Monday and Tuesday (Jan 19-20) are looking surprisingly decent. We’re talking highs in the low 50s. On Tuesday, we might even hit 52°F or 54°F depending on which station you trust more. That’s nearly 5 degrees above the seasonal average.
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But don't get too comfortable.
The clouds stay heavy through Wednesday and Thursday. By Friday, January 23, the classic Valley "sprinkles" return. It’s not a flood, but it’s that annoying mist that somehow gets you wetter than actual rain. The overnight lows are going to hover right around the freezing mark—27°F to 34°F. That means if you’re commuting early on the Beltline, watch out for those patches of black ice.
Why This January Feels Different
There’s a lot of talk about La Niña fading into "neutral" conditions this year. What that basically means for us in Eugene is that the predictable "wet and cold" pattern is getting messy.
According to recent data from the Oregon Water Resources Department, our snowpack is actually pretty low right now—around 30% to 50% of normal in some parts of the state. While we’re getting some rain, the temperatures are just high enough that it’s not sticking in the mountains as snow.
- Average January High: 49°F
- Average January Low: 35°F
- Current Trend: We're seeing highs hitting 51°F to 54°F this week, which is definitely on the warmer side of the historical spectrum.
If you look at the long-term history, Eugene usually gets about 6.5 inches of rain in January. This year? We're trailing a bit. It’s great for getting yard work done or hitting the Ridgeline Trail without sinking into a foot of mud, but it’s making the hydrologists a little nervous for the summer.
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Looking Ahead to Next Week
As we move into the tail end of the month (Jan 25–31), the Eugene Oregon 14 day forecast takes a bit of a dive back into the cold.
Expect temperatures to drop back into the low 40s. Sunday, January 25, is showing a high of only 39°F. We’re seeing a higher chance of rain—around 60%—by Tuesday, January 27. It looks like the "January Thaw" we’re experiencing right now is going to be short-lived.
By the time we hit the end of the month, on Saturday, January 31, we’re back to overcast skies and highs in the low 50s. It’s the classic Eugene see-saw. One day you’re in a t-shirt at a brewery, the next you’re digging for your wool socks.
Surviving the Valley Winter
If you're planning your week based on this forecast, here’s the move. Use the "mostly sunny" window on Monday and Tuesday for anything outdoors. Seriously. In an Oregon winter, a sunny Tuesday is a gift you don't waste.
Once we hit Friday, the humidity is going to spike back up toward 90%. Your windshield is going to be fogged every morning, and the "breezy" conditions will make that 45°F feel a lot more like 35°F.
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The biggest misconception about the Eugene Oregon 14 day forecast is that it’s predictable. It isn't. But by keeping an eye on these shifting Arctic air masses and the transition out of La Niña, you can at least guess which day you’ll actually need your boots.
Keep your layers handy and don't trust a clear sky for more than twenty minutes. That's just the Eugene way.
Your Next Steps:
- Check your outdoor pipes tonight—lows are dipping to 28°F, which is prime "frozen pipe" territory for older South Eugene homes.
- Plan any outdoor hikes for Monday or Tuesday afternoon to catch the 50°F peak.
- Swap your standard wipers for winter blades before the rain returns this Friday.