By Eric Leister, AccuWeather meteorologist
May 12,2017, 7:36:36AM,EDT
Following a cool April and early May, a change to warmer weather is expected in June with lasting warmth through August.
Temperatures will climb above normal during July and August as dangerous heat builds across Italy and the Balkan Peninsula.
These surges of warm air from the Mediterranean will help fuel numerous showers and thunderstorms throughout the summer months.
Some of these storms will become severe with threats ranging from flash flooding and damaging winds to hail and isolated tornadoes.
"Flash flooding will be a concern in streams and smaller rivers, especially in southern Germany," AccuWeather Senior Meteorologist Alan Reppert said.
The higher-than-normal frequency of showers and thunderstorms will threaten outdoor events such as the many music festivals that occur from June through August.
"The highest risk for severe thunderstorms will be from the mid-afternoon into the early evening," AccuWeather Meteorologist Tyler Roys said.
While all of Germany will be at risk for rain and thunderstorms, damaging storms will most be frequent across southern and eastern Germany.
Areas that will be at greatest risk for severe thunderstorms include Stuttgart, Munich, Dresden and Berlin.
The strongest storms will be capable of producing damaging hail or a tornado.
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While typical summer warmth is expected for the majority of summer, a brief surge or two of heat is possible, especially during late July and August.
During this time, drier weather will allow intense heat from Italy and the Balkan Peninsula to advance into Germany, fueling the hottest stretch of the summer.
Temperatures are likely to reach or exceed 32 C (90 F) several times during this time period in both Frankfurt and Berlin.
"Despite a few bouts of heat, we do not expect heat waves comparable to 2003 or 2006," Roys said.
Deadly heat waves killed hundreds of people in the summer of 2003.
During the summer of 2006, July's average temperatures shattered records in many locations, while highs climbed over 38 C (100 F). Severe thunderstorms and bouts of flash flooding accompanied the heat.
Those looking to escape the most intense summer heat this year will want to venture northward. Fresh cool air will make several appearances in Hamburg and Kiel during the summer months.
Across the country, residents will want to be on alert for potential air quality issues.
"Sensitive groups including the elderly and children will need to take extra precautions during these times," Roys added.