NASA's Goddard Space Flight Center surveyed the history of inclement inaugural weather, also in 2001.
- Average Noon Temperature when a Republican President is sworn in is 40.4 F.
- Average Noon Temperature when a Democratic President is sworn in is 33.0 F.
For more details on inauguration weather, see this earlier post.
Image: Benjamin Harrison inauguration, from Library of Congress via National Climatic Data Center