Fastest temperature rise
- Who
- Spearfish
- When
- 22 January 1943
The most freakish rise was 27°C (80°F) in 2 min at Spearfish, South Dakota, USA, from -20°C (-4°F) at 7:30a.m. to 7°C (45°F ) at 7:32a.m. on 22 January 1943.