NOTICE: CDIAC as currently configured and hosted by ORNL will cease operations on September 30, 2017. Data will continue to be available through this portal until that time. Data transition plans are being developed with DOE to ensure preservation and availability beyond 2017.

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DayRec: United States Record-Maximum/Minimum Daily Temperatures

(Please read about DayRec data and methods before using these data.)

Select a state or the entire U.S. from the pulldown list and click 'Map Sites' to display station locations. Select a station from the map or the station list to pop-up a description of the station and click on the "Get Data" link to access its data. Stations with blue markers have the least missing data (Class 1 stations); those with green markers have slightly more missing data (Class 2 stations). Please see DayRec data and methods for more details.

Note: Currently, DayRec does not include any stations in Connecticut and Delaware.