From the Daily Mail:

The Sun’s activity is at its lowest for 100 years, scientists have warned.

They say the conditions are eerily similar to those before the Maunder Minimum, a time in 1645 when a mini ice age hit, Freezing London’s River Thames.

Researcher believe the solar lull could cause major changes, and say there is a 20% chance it could lead to ‘major changes’ in temperatures.

[ . . . ]

Mike Lockwood University of Reading says that the lower temperatures could affect the global jetstream, causing weather systems to collapse.

‘We estimate within 40 years there a 10-20% probability we will be back in Maunder Minimum territory,’ he said.

Or not. Fortunately, I won’t be around 40-years from now so I’m not going to worry about whether I have too many long sleeve or short sleeve shirts on hand.