Weather history and climate summary information is available for the following locations:
- Boise
- Mountain Home
- Pocatello
Warmest April Days
The warmest April days in Idaho are:
| Mountain Home, Idaho | 1992 | 91.9°F |
| Mountain Home, Idaho | 1977 | 91.9°F |
| Boise, Idaho | 1987 | 91.9°F |
| Boise, Idaho | 1934 | 91.2°F |
| Mountain Home, Idaho | 1987 | 91°F |
Coldest April Days
The coldest April days in Idaho were:
| Boise, Idaho | 1936 | 10.4°F |
| Pocatello, Idaho | 2010 | 12.9°F |
| Pocatello, Idaho | 1997 | 14°F |
| Pocatello, Idaho | 2008 | 15.1°F |
| Mountain Home, Idaho | 1999 | 15.8°F |
Wettest April Days
The wettest single days in April occurred:
| Boise, Idaho | 1973 | 8.7 inches |
| Pocatello, Idaho | 1973 | 4.7 inches |
| Mountain Home, Idaho | 1981 | 1.3 inches |
| Boise, Idaho | 1981 | 1.2 inches |
| Pocatello, Idaho | 1976 | 1.2 inches |