|The areas in blue indicate the frost advisories in effect for Sunday night, September 23rd.|
|Minimum temperatures for the morning of September 24.|
|The colored dots on the map indicate locations where 32°F has occurred this fall.|
The first occurrence of 32°F is about on schedule for the upper Midwest and Northern Plains, and anywhere from a week to two weeks early in the central U.S. The temperatures in the low and mid 20s are a few weeks early. The maps below show the extend of freezing weather so far this fall n the central U.S., and the median dates for the first occurrence of 32°F and 28°F.
|Same as the map above, except for 28°F.|