Weather history and climate summary information is available for the following locations:
- Boise
- Mountain Home
- Pocatello
Warmest October Days
The warmest October days in Idaho are:
| Boise, Idaho | 1992 | 95°F |
| Boise, Idaho | 1997 | 93.9°F |
| Mountain Home, Idaho | 1992 | 93.9°F |
| Mountain Home, Idaho | 1997 | 93.2°F |
| Mountain Home, Idaho | 2010 | 93°F |
Coldest October Days
The coldest October days in Idaho were:
| Pocatello, Idaho | 2006 | 10°F |
| Pocatello, Idaho | 2003 | 10°F |
| Pocatello, Idaho | 1978 | 11.8°F |
| Pocatello, Idaho | 2002 | 12°F |
| Mountain Home, Idaho | 2006 | 12.2°F |
Wettest October Days
The wettest single days in October occurred:
| Pocatello, Idaho | 1976 | 1.8 inches |
| Boise, Idaho | 2000 | 0.8 inches |
| Mountain Home, Idaho | 2011 | 0.8 inches |
| Pocatello, Idaho | 1980 | 0.8 inches |
| Pocatello, Idaho | 1975 | 0.8 inches |