Interactive Map to Degree-Day Calculator for Northwestern USA
Introduction Suggestions for use
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These maps are calculated daily using the GIS GRASS 5.4, and are based on 1) near-real time temperature data from numerous AgriMet, HydroMet, National Weather Service, RAWS, and Snotel weather stations, 2) historical average temperature data from numerous stations, 3) PRISM monthly max and min temperature maps, and 4) corrections based on inverse-distance squared inter polations of differences between PRISM map-based and real-time degree-day calculations. See More info. on methodology for creating DD maps. Also try out our Degree-day Mapping Calculator for control over thresholds, calculation method, d ates, and mapping options.
Suggestions for Use
[IPM Weather/Degree-Days Home] [Intro] [US DD Mapmaker] [DD Models and Calculator] [Links]