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Climate & Weather Data

PRISM Climate Data

PRISM Climate Data provides high-resolution (800m-4km) temperature and precipitation maps for the United States using elevation-aware interpolation, especially accurate in mountainous regions.

Format ASCII / GeoTIFF
Coverage United States
Resolution 800m to 4km
License Free for research and educational use
Update Daily and monthly updates
Download source Open official source

Format

ASCII / GeoTIFF

Geometry

Raster (climate grid)

Coverage

United States

Resolution

800m to 4km

About this dataset

Oregon State's high-resolution climate data for the United States using PRISM interpolation with elevation-aware modeling.

PRISM (Parameter-elevation Regressions on Independent Slopes Model) from Oregon State University provides daily, monthly, and annual climate surfaces for the United States at 800m-4km resolution. PRISM uses elevation-based regression to produce climate maps that are particularly accurate in mountainous terrain.

US climate analysis Agricultural modeling Hydrological modeling Mountain climate research

How to download

  1. 1 Open the PRISM data explorer or downloads page.
  2. 2 Select the time period (daily, monthly, annual) and variable (precipitation, tmax, tmin, tmean).
  3. 3 Download the ASCII or BIL raster for your area of interest.
  4. 4 Open in QGIS or GeoDataViewer and combine with DEM data for mountain climate analysis.

PRISM data explorer

Daily, monthly, and annual climate data

→

PRISM downloads

Bulk download for historical datasets

→

FAQ

How does PRISM differ from WorldClim?

PRISM uses elevation-dependent interpolation optimized for the complex terrain of the United States, offering finer spatial resolution (800m vs 1km) and daily temporal granularity. WorldClim provides global coverage with consistent methodology.

Is PRISM data available for real-time monitoring?

Yes. PRISM provides near-real-time daily climate data with a short latency (typically 1-2 days behind real-time), as well as long-term historical normals.