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DD Maps & Map Access to DD calculator | ||||||||||||||||||||||||||||||||||||
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Daily degree-day (DD) maps are calculated daily (from Jan 1 of the current year through yesterday) using open source GIS (GRASS) real time and historical temperature data from numerous publicly available weather stations (see table index below) and PRISM temperature maps. See More info. on methodology. With these maps, you may track the extent of DD (heat unit) build-up so far this growing season using the temperature thresholds 32°, 41°, and 50° F. Click on region of interest to get started. Try the Degree-day Mapping Calculator for custom control over options. |
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This site on-line since April 5, 1996; last update Feb 1, 2021
All data provided "as is" and users assume all risk in its use - see full disclaimer. All NWS derived data is not subject to copyright protection. This site hosted by the Integrated Plant Protection Center at Oregon State University with support from the USDA National Plant Diagnostic Network, various USDA grants, and USDA IPM Centers - Western Region.
Climate map data provided by OSU PRISM Group, realtime public weather data provided by U. Utah Mesowest and various grower networks.
Contact Len Coop, OSU OIPMC and Horticulture Dept. at coopl@oregonstate.edu or 541-737-5523 if you have any questions about this information.