Honestly, if you've lived in the Rogue Valley for more than a week, you know the drill. You wake up, look out the window at a wall of white soup, and wonder if the sun actually exists anymore.
Right now, the 10 day forecast Grants Pass Oregon is doing that weird mid-January dance where the numbers on the screen don't quite tell the whole story of what it feels like when you step out onto your porch.
As of Thursday, January 15, 2026, we are sitting in a classic stagnant air pattern. It’s sunny above the clouds, but down here in the basin? Not so much.
The Immediate Outlook: Clear Skies and Frozen Toes
Today is actually gorgeous if you can get above the valley floor. We’re looking at a high of 59°F and a low of 32°F. That’s a massive swing. Basically, you’re going from "I need a parka" at 7:00 AM to "maybe just a light hoodie" by 2:00 PM.
The wind is almost non-existent—just a light 2 mph breeze from the north.
Tomorrow, Friday, January 16, gets even warmer with a high of 62°F. That is significantly higher than the usual January average of 48°F. Why? Because we have a massive high-pressure ridge parked over us. It’s trapping the cold air in the valley while the sun bakes the tops of the Siskiyous.
Why the Forecast Can Be Deceiving
Here is the thing about Grants Pass weather: the "official" condition might say "sunny," but if you're driving down 6th Street at 8:00 AM, you're probably squinting through freezing fog.
The National Weather Service currently has an Air Stagnation Advisory in effect until Tuesday, January 20.
When the air doesn't move, wood smoke and car exhaust just... sit there. It’s kinda gross, and it makes the "sunny" forecast feel a bit like a lie until the fog finally burns off around noon.
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The 10-Day Breakdown (The "Mostly Dry" Stretch)
We are in a surprisingly dry spell for a month that usually sees over 5 inches of rain. Check out the trend for the next week:
- Saturday (Jan 17): High of 59°F, low of 34°F. Sunny during the day, but clouds start creeping in at night.
- Sunday (Jan 18): Mostly cloudy. High drops slightly to 56°F.
- Monday & Tuesday (Jan 19-20): Still hanging out in the mid-50s. The low stays right around the freezing mark (33°F).
- Wednesday (Jan 21): Things start to cool off. High of 53°F. More clouds, less "fake spring."
The "Big Shift" Toward Next Weekend
If you’re looking for the typical Oregon winter, wait until Thursday, January 22. The high drops to 47°F, and the humidity jumps to 86%.
We actually have a 20% chance of snow overnight on Thursday.
Now, don't go buying out the bread and milk at Safeway just yet. In Grants Pass, "snow" usually means "wet slush that vanishes by lunch." But with a low of 30°F predicted for Saturday, January 24, we might actually see some white stuff sticking to the grass in the higher neighborhoods like NW Highland or out toward Murphy.
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Local Insight: The "Inversion" Factor
What most out-of-towners don't realize is that Grants Pass is basically a bowl.
In January, we get these temperature inversions. The mountains stay warm, and the valley stays cold. If the forecast says 59°F, but you’re standing in the shade of a Douglas fir at 10:00 AM, it’s going to feel like 35°F.
And let's talk about the Rogue River. It’s currently at a normal stage—around 2.15 feet at the Grants Pass gauge—but those "atmospheric rivers" we saw back in December are a reminder of how fast things can change. We don't have one on the radar for this 10-day window, which is a relief for anyone living in the flood zones near Tussing Park.
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Actionable Advice for the Week Ahead
- Check your woodstove: With the stagnation advisory, try to limit burning if you can. The air quality gets "unhealthy for sensitive groups" pretty fast when the wind is only 1-2 mph.
- Watch the passes: If you’re heading north on I-5 toward Roseburg or south toward Medford, that freezing fog is no joke. Visibility can drop to less than a quarter-mile near Sexton Summit.
- Hydrate your plants: It sounds crazy for January, but with these 60°F days and no rain, the top inch of your soil is going to get bone dry.
- Layers, layers, layers: You’ll want a heavy coat for the morning commute and something breathable for that afternoon sun.
The 10 day forecast Grants Pass Oregon is giving us a rare "dry January" break. Enjoy the sun while it lasts, because once the clouds return next Thursday, the damp chill will be back for the long haul.
Keep an eye on the overnight lows—once we hit that 30°F mark on the 24th, your outdoor pipes will definitely need those foam covers.