Now that we are approaching our average date of the last 32 F low temperature for southern Wisconsin, it is time to start the frost/freeze headlines for this growing season. If we expect temperatures low enough to cause a widespread frost or freeze, we will issue headlines advertising the threat to sensitive plants.
The map below shows the median date of the last freeze for the Midwest:
This data is supplied by the Midwest Regional Climate Center (check it out, it's a very cool website!)
Go here for even more spring frost/freeze information.