Yes, there is. Low sunspot activity during the “solar minimum” with some possible influence by volcanic eruptions have resulted in a dip in the Jet Stream.
Here is one article detailing the issues, which I have excerpted below (emphasis mine):
“According to NASA, the sun has been at the minimum part of its cycle since early 2008. The last solar maximum was around 2001. During a solar minimum, there are few or no sunspots. Some studies have shown that when sunspots are present, the area of the sun surrounding the spots is brighter. While the process is much more complex and the effects are probably not instantaneous, a lack of sunspots could translate to slightly less heating of the earth, by the sun.
Now, back to the weather maps. While surges of summer warmth are expected to reach the Northeast in the coming weeks, a prolonged period of hot weather in July does not appear likely for New England.
Instead, a dip in the jet stream will persist. In turn, this will allow cool fronts to sweep through on a regular basis, each with bouts of clouds, showers and locally severe thunderstorms.
Recall that back in mid-April, AccuWeather.com Long Range Expert, Joe Bastardi predicted that for the Northeast, the hottest weather relative to normal for the 2009 warm weather months was about to occur. During late April, temperatures had surged to 20 degrees above average in much of the Northeast.”