Are there any tree frogs in the upper Midwest?

Yes, there are tree frogs in the upper Midwest. The most common species found in this region is the Eastern Gray Tree Frog, known for its distinctive green or gray coloration and its ability to change color. Other species, such as the Cope's Gray Tree Frog, may also be present. These frogs typically inhabit wooded areas and can often be heard calling during the warmer months.