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Pacific Decadal Oscillation
Plot the monthly Pacific Decadal Oscillation (PDO) index from 1854-Present. Click on “View Data” to view the numerical value of the PDO index for a given month.
Climate Mapping for a Resilient Washington
Download maps, tables, graphs, and data of monthly, seasonal, and annual climate projections for a variety of key hazards and indicators.
NCEI Climate-at-a-Glance
Graph, rank, and map monthly, seasonal, and annual average temperature and precipitation from 1895-present. View long term changes at the state, county, and other levels.
West Wide Drought Tracker
This tool allows the user to examine monthly time series and create maps of temperature, precipitation, or various drought indices (including Palmer Drought Severity Index and Standardized Precipitation Evapotranspiration Index) nationwide using PRISM data. Note: Requires creation of a free account for data access.
MRCC cli-MATE Tool
Access hourly, daily, monthly, and seasonal raw climate data, as well as rankings, thresholds, and graphics through for cli-MATE. This is a powerful tool that we highly recommend.
Climate Toolbox Seasonal Forecast Graphs
Explore experimental 7-month forecasts of monthly precipitation and temperature relative to historical (1991-2020) normals. Click on “set location” on the initial pop-up message and then enter “Washington State” in the GeoLocation box to view projections for Washington State.
Community Collaborative Rain, Hail, and Snow Network (CoCoRaHS)
View a map of daily precipitation, snowfall, and snow depth measurements from a large and growing network of backyard weather stations. Observers began taking measurements in WA state in June of 2008, and observations are updated daily.
Climate Toolbox Climate Mapper
Maps of recent, gridded conditions, as well as monthly and seasonal forecasts and long term climate projections on a seasonal and annual time scale.
UW Atmos Recent Timeseries Weather Observations across the NW
Plot real-time and historical weather conditions for various stations in WA, OR, ID, and BC. Data are available from 1996-present.
CIG Probabilistic SLR Tool
View maps and graphs of projected sea level rise on Washington shorelines out to the year 2150. This tool takes into account gradual land subsidence/uplift.
CIG Extreme Precipitation Tool
View projected changes in extreme precipitation metrics across the northwestern contiguous US and far southern B.C. Projections are available for different rainfall event durations (from 1 to 72 hours) and return intervals (from 2 to 100 years).
NCEI Climate Normals Viewer
View graphs and download data for annual, seasonal, monthly, daily, and hourly normals for temperature, precipitation, and snowfall from climate stations nationwide. Climate periods available for graphing and download include 2006-2020, 1991-2020, and 1981-2010.
LOCA Climate Projections
View gridded historical and projected (1950-2099) daily minimum temperature, maximum temperature, and precipitation across North America. Future projections are available for various emissions pathways (RCP 4.5 and RCP 8.5) using the CMIP5 models (2013).
Wind Rose Diagrams
View monthly wind roses (diagrams showing the frequency of average wind direction and speed at a given location) for ASOS (airport) stations across Washington State. This tool also allows the user to download raw data and choose a custom time period to plot as well.
PNW Trend Analysis Tool
Graph monthly, seasonal, and annual trends in temperature, precipitation, and snowpack for stations across the Pacific Northwest.