Weather middle of June/ beginning of July

And where in Germany will your mother be?

I know this is a serious question and it gets asked often. However, there is no answer. Can you accurate forecast the weather in your area for that time frame ? And you live there. It all depends on where you are. The mountains are different from the plains. Cities will be hotter than the country side. You can goggle weather for that area and get averages but that is not all that helpful either since your have to have extremes to have an average. You need to plan for a little bit of everything except snow. Plan on rain, hot temperatures, some cool temps, and probably high humidity.

https://www.timeanddate.com/weather/germany/berlin/climate

Plug in your city and you can see historical data for different place.

Wikipedia articles on specific cities has average high temperatures, low temperatures, precipitation, hours of sunshine and other weather related information month by month.

Lot of meaningful answers already.

Tip: Check Germany's public weather service DWD before traveling. Forecasts are reliable max. 4-5 days ahead.

We lived in Augsburg, Germany, near Munich and the weather in June and July in Germany is great.

Summers are usually mild, but can be hot.