That was the summer following a volcanic eruption, indeed, it snowed during that summer!<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Year_Without_a_Summer" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Year_Without_a_Summer</a><p>also: While usually attributed to him, the actual source of these words is unknown and there is no evidence that Mark Twain ever said this.