Free Weather and Climate Tools

Try out our weather and climate tools for free below.
Forecast Verification Summary
View a summary of forecast biases and mean absolute errors for Frontier Weather forecasts and various computer models over the last 90 days.
Historical Monthly Weather Viewer
View historical monthly temperature, standardized precipitation, and SST anomalies from 1950 to present for both individual months as well as winter and summer seasonal composites!
Recent Weekly Weather Viewer
View recent historical weekly temperature and precipitation anomaly maps with comparisons to the same period last year.
ENSO Graphics
Composite of latest ENSO (El Nino/La Nina) related graphics.
Climate Index Roundup
Various climate index graphics including the AO, NAO, PNA, MJO, GWO, etc.
Snow and Ice Cover Status
Snow Cover/Sea Ice Page
View current Northern Hemisphere and U.S. snow and ice cover information.
Drought Status Page
View latest U.S. drought graphics and information.
Solar Data Page
View latest solar graphics and information.
MJO Temperature & Precipitation Analog Viewer
Tool to view the current MJO phase diagram and analog temperature and precipitation maps for each phase of the MJO.
Weather Calculator
Use tools to calculate Wind Chill, Heat Index, Dew Point, Relative Humidity, and perform some unit coversions.