The dust from the 1815 eruption of Mount Tambora in the Dutch East Indies (now Indonesia) caused a worldwide lowering of temperatures during the summer of 1816, when the Almanac, legend has it, inadvertently but correctly predicted snow for July.
Almanac.com General Store
The Almanac Weekly Companion
Everything you love about the Almanac. Free!
Free Rose Gardening Guide!
From The Old Farmer's Almanac: Sign up to receive a FREE guide (A $4.95 value!) plus updates from Almanac.com.