summer in toronto, spring in newfoundland

I happened to notice a national weather broadcast on CBC the other day. Reading west to east, it went something like this.
Vancouver 22
Calgary 23
Regina 20
Winnipeg 25
Toronto 28
Montreal 23
Halifax 18
St. John's 7

Whoa. Everyone has told me that June is not yet summer in Newfoundland, but looking at the difference was still starling. Here's the forecast in three Newfoundland towns we'll visit.

St. John's
Today 7
Thurs 11
Fri 6
Sat 7
Sun 8

Twillingate
Today 10
Thurs 12
Fri 6
Sat 7
Sun 8
Monday 9

Deer Lake
Today 23
Thurs 18
Fri 11
Sat 12
Sun 15
Mon 13
Tues 12

Lucky for us we don't like hot weather! A Campaigner friend who grew up in Grand Falls says they refer to a brief period in July as "summer week".

We leave Tuesday.

PS: US friends, I'm not bothering with conversions anymore. This is a good site if you need help.