:. Idaho Weather And Climate .:

Idaho weather is milder than some people may assume about a Northern state that isn't located on an Ocean and is at a slightly higher elevation. The Pacific Ocean still has a moderating effect on Idaho, providing cloud cover and humidity in the winter. Don't be fooled, however, winter can be cold, and summer can be somewhat hot, although usually dry.

City Boise Lewiston Pocatello
Jan 37/24 39/28 32/16
Feb 44/29 46/31 39/21
Mar 54/34 54/36 48/27
Apr 62/39 62/41 58/33
May 71/47 70/47 68/39
Jun 80/54 78/54 78/46
Jul 89/60 88/59 88/51
Aug 88/60 88/59 87/50
Sep 77/51 77/51 76/42
Oct 64/41 62/41 62/33
Nov 48/32 47/34 44/25
Dec 37/24 39/28 34/17