From time to time I get requests for information about the number of consecutive hours that a station’s temperature is at or below freezing. This website tool from the Midwest Regional Climate Center provides a map of the consecutive number of hours at or below 32 F for stations across the country, not just the Midwest. You can pick three different periods to look for the information. Check it out at https://mrcc.purdue.edu/gismaps/freeze_hourly.
