Idaho, United States Climate Records

Warmest September Days

The warmest September days in Idaho are:

Mountain Home, Idaho1955104°F
Mountain Home, Idaho1945102.4°F
Mountain Home, Idaho2007102.2°F
Mountain Home, Idaho1987100.9°F
Boise, Idaho2007100.9°F

Coldest September Days

The coldest September days in Idaho were:

Pocatello, Idaho198519°F
Pocatello, Idaho198319°F
Pocatello, Idaho199921.9°F
Pocatello, Idaho200021.9°F
Mountain Home, Idaho196524.1°F

Wettest September Days

The wettest single days in September occurred:

Boise, Idaho19761.7 inches
Pocatello, Idaho20001.2 inches
Mountain Home, Idaho19801.1 inches
Pocatello, Idaho19831 inches
Pocatello, Idaho19820.9 inches