The Valley Forecaster

Vallecito Lake forecast

Blended from several models, corrected to the lakeside station, and graded against it every day.

56°
Mostly Clear
High 73° · Low 51° · feels 56°
Marina lakeside station · 5:16 AM MDT
Air 13 · Good

Low 70s through Fri, cooling to the mid 60s by Tue. A storm chance Sun.

This morning’s read

The morning read publishes daily around 5:45 am Mountain.

Up the Pine Weather. A forecast, not road status. Check COtrip before you drive, and the National Weather Service for warnings.

Hour by hour

Drag across the ridge — the sky is tonight and tomorrow, the mountain is the temperature.

52°
Now Wed, Sep 9 Mostly Clear
4 mph
  • Now, Wed, Sep 9, 52 degrees, Mostly Clear
  • 6 AM, Wed, Sep 9, 49 degrees, Sunny
  • 7 AM, Wed, Sep 9, 50 degrees, Sunny
  • 8 AM, Wed, Sep 9, 54 degrees, Sunny
  • 9 AM, Wed, Sep 9, 61 degrees, Sunny
  • 10 AM, Wed, Sep 9, 65 degrees, Sunny
  • 11 AM, Wed, Sep 9, 68 degrees, Sunny
  • 12 PM, Wed, Sep 9, 68 degrees, Sunny
  • 1 PM, Wed, Sep 9, 70 degrees, Sunny
  • 2 PM, Wed, Sep 9, 71 degrees, Sunny
  • 3 PM, Wed, Sep 9, 72 degrees, Sunny
  • 4 PM, Wed, Sep 9, 72 degrees, Sunny
  • 5 PM, Wed, Sep 9, 72 degrees, Sunny, 1 percent chance of rain
  • 6 PM, Wed, Sep 9, 74 degrees, Mostly Clear, 1 percent chance of rain
  • 7 PM, Wed, Sep 9, 69 degrees, Mostly Clear, 1 percent chance of rain
  • 8 PM, Wed, Sep 9, 62 degrees, Mostly Clear
  • 9 PM, Wed, Sep 9, 58 degrees, Mostly Clear
  • 10 PM, Wed, Sep 9, 55 degrees, Mostly Clear
  • 11 PM, Wed, Sep 9, 53 degrees, Mostly Clear
  • 12 AM, Thu, Sep 10, 55 degrees, Mostly Clear
  • 1 AM, Thu, Sep 10, 53 degrees, Mostly Clear
  • 2 AM, Thu, Sep 10, 51 degrees, Mostly Clear
  • 3 AM, Thu, Sep 10, 50 degrees, Mostly Clear
  • 4 AM, Thu, Sep 10, 49 degrees, Mostly Clear
See how much the models disagree — drag through the next 48 hours

The bold line is the corrected blend; the shaded band is how far the models disagree. Drag across it — or focus it and use .

Drag or use · the band is model spread, the line is the corrected blend.

Next seven days

Bars share one temperature scale, so you can read the week at a glance. Tap any day for the model spread, the correction, and the record.

WedSep 9Sunny
73°51°1%
Model range 80–85° · low 51°
ThuSep 10Sunny
72°49°
Model range 79–84° · low 49°
FriSep 11Showers
70°48°16%
Model range 76–84° · low 48°
SatSep 12Showers
68°49°21%
Model range 74–81° · low 49°
SunSep 13Showers
65°50°47%
Model range 70–78° · low 50°
MonSep 14Showers
64°49°36%
Model range 68–78° · low 49°
TueSep 15Showers
64°49°35%
Model range 68–79° · low 49°

Live radar

Precipitation radar

The latest radar frame over the San Juans (RainViewer). Loads when you scroll here to keep the page light.

Radar RainViewer · base map CARTO/OpenStreetMap · data NOAA/NWS.

Right now · elevation gradient

Lake vs. the high country

The lake sits at about 7,665 ft; Big Bear Park (station BBRC2) is up at 10,341 ft, ≈2,700 ft higher toward the Weminuche. The difference between them is the gradient that flat forecasts miss.

56°
the lake · 7,665 ft
even
56°
10,341 ft · Big Bear Park (BBRC2)

Why it differs from your phone

Most apps read one model and smooth the terrain flat. We pull several — NWS, GFS, ECMWF, ICON — pin them to the lake's real elevation, and blend them, then correct toward the marina's lakeside station. That's why it can disagree with your phone.

Sources: NWS · GFS · ECMWF · ICON. · Ground truth: the lakeside marina station. See how we verify.