I am packing as we speak and I am all confused about the weather in Munich and Bavarian areas in general. I thought it was really hot during the summer ( I live in Sacrament, Ca and hot means hot!) While I checked the forecast it doesn't seem that is going to be warmer than about 74 degrees and posibilities of rain What the heck!
Now, I am all confused (which it doesn't take much) in regards on what to pack. I am thinking rain jackets and umbrellas, short sleeves or long sleeves? shorts or long pants?
I am full of question and it is all because of the weather !
Ayuda!!

Bring layers of clothing - you will need to be prepared for some hot days and some miserable and cold ones. It can get hot in the summer (30C) but this summer there has been a lot of inclement weather and the temperature can drop to 16C (sorry, I only know celsius). One weatherproof jacket would be a good idea, a light sweater, and some t-shirts. Don't worry about a long sleeved top, the other layers will be sufficient. We just returned last week and I had a very light cotton cardigan which I wore almost every day. We did have a couple of hot days too, but mostly the weather was temperate. One pair of jeans, and then whatever skirts / shorts / capris you might wear in the summer. Bring an umbrella.

Lavandula

It was 60F yesterday in Munich, and that was the afternoon high. Which is unseasonably cold for summer but not totally uncommon, unfortunately.
It is supposed to improve a bit but the forecasts don't give us much hope that it will get warmer than 75F.

Yep. Rainy and cool in the Heidelberg area as well for days on end. Friends got back from Garmisch and said they ran into snow in the high elevations one day. The upside: my bleeding hearts are happy.

Definitely layered clothing as suggested above. I've lived in long pants and capris this summer and only needed shorts/skirts once or twice. If you're packing light and can't bring an umbrella, plan on buying one as soon as you arrive. If you're really not used to cool weather, bring a hoody or something for your head/hands if you're going to be in the upper elevations (I'm thinking of my poor SIL from Florida who spent her whole visit looking like a frozen popsickle; we were fine)

Germans don't let the weather stop them; I'm sure you'll follow suit and have a grand time.

You need to check if the heating can be switched on at the place you're staying. A portable heater may help, but may also blow the fuse. I stayed in a hotel last week, where it was really "cold" at night. (Below 50F.) The waether is the typical zig-zag, nothing too unusual. Warm->thunderstorm->cold->warm->thunderstorm->cold...
Get an umbrella too.

If you've ever been to southern Texas in winter, that's about what to expect in a typical Munich summer.

After a very hot and dry spring it has been unusually cold this summer here in Germany, and unfortunately it is not going to improve much within the next week.

Yes we have weather in this country!

Pack a bit of everything, prepare for all varieties. The weather is changeable, impossible to predict long-term and no forecast beyond 3-4 days is in any way reliable, no matter how convincing it sounds. Meteorologists are known as "professional liars" here.

Rain gear (jacket, umbrella, shoes that survive a couple of puddles) is needed any time of the year. Also one should never travel without at least one warm sweater and long pants even in highest summer.

Just pretend you are packing for the CA coast plus Napa/Sonoma

Just got back from a trip that included five or six days in and around Munich. It was cloudy and rainy much of the time, and the temperature was usually in the upper 50's/low 60's. On occasion the sun would break through, and it might rise into the low 70's, but it was never particularly hot. The desk clerk at our hotel in Munich said it didn't seem like they were having a summer. I don't know how long this pattern will continue, but I gather it's an unseasonably cool and wet summer by the standards of the locals. This weather isn't unheard of in July in Bavaria, but it's usually not so frequent. Of course, with the mercury close to 100 here in the Southeastern US, it's something I'd go back to in flash. Layers!

>usually not so frequent
I'd disagree, it's at least about one in three years, that the "dog days" are colder. We had a great spring and early summer. The holidays start next week, still 3 to 4 weeks of summer, so who knows.