Recent Weekly Weather Viewer View recent historical weekly temperature and precipitation anomaly maps with comparisons to the same period last year. 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! Climate Index Roundup Various climate index graphics including the AO, NAO, PNA, MJO, GWO, etc. ENSO Graphics Composite of latest ENSO (El Nino/La Nina) related graphics. 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. 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. Solar Data Page View latest solar graphics and information. 1971-Present Temperature Trends Plots of Monthly/Yearly and Seasonal temperature trends for the 1971-present period for numerous U.S. cities. Weather Calculator Use tools to calculate Wind Chill, Heat Index, Dew Point, Relative Humidity, and perform some unit coversions.