File name: Date_of_last_freeze_1981-2010_large.png
Original Resolution: 1860 × 1482
File Size: 361 KB (MIME Type: image/png)
The average date of the last freeze of spring, with earlier-in-the-year dates in dark green and later-in-the-year dates in light purple. This map is based on the 1981-2010 Normals from the National Centers for Environmental Information. Map by Jake Crouch and Rocky Bilotta, NCEI.