Daily and Interactive Degree-Day Maps of Washington

Updated daily

These maps are calculated using the GIS GRASS 5.0, and are based on 1) near-real time temperature data from numerous AgriMet , HydroMet, National Weather Service , and RAWS weather stations, 2) historical average temperature data from numerous stations, 3) PRISM monthly max and min temperature maps, and 4) inverse-distance squared interpolations 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 new Degree-day Mapping Calculator for more control over calculation and mapping options.

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Degree-Day Maps created daily using a 41 F. lower threshold:
Jan 1 - yesterday	Finished Map (click for larger version)
Current year GRASSLinks interactive GIS interface: (select region, size and click GO) Region Whole State NW WA NE WA SW WA SE WA Mapsize 1600 1300 1000 800 600 400 250 150 pixels
Normals (Historical avgs) Region Whole State NW WA NE WA SW WA SE WA Mapsize 1600 1300 1000 800 600 400 250 150 pixels
Deviations from Normals Region Whole State NW WA NE WA SW WA SE WA Mapsize 1600 1300 1000 800 600 400 250 150 pixels

Degree-Day maps created daily using a 50 F. lower threshold:
Jan 1 - yesterday	Finished Map (click for larger version)
Current year GRASSLinks interactive GIS interface: (select size and click GO) Region Whole State NW WA NE WA SW WA SE WA Mapsize 1600 1300 1000 800 600 400 250 150 pixels
Normals (Historical avgs) Region Whole State NW WA NE WA SW WA SE WA Mapsize 1600 1300 1000 800 600 400 250 150 pixels
Deviations from Normals Region Whole State NW WA NE WA SW WA SE WA Mapsize 1600 1300 1000 800 600 400 250 150 pixels

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