Well, we can't compare to the heat of Mississippi, but in Montreal we've been having a very warm, sunny summer after a cold, crappy spring. We've had some pretty hot, humid days with temps in the upper 80s to 90s and it can be very humid. However, we've also had enough variation to make it bearable- some cooler days with temps in the 70s. ON brutally hot days, of course, you have to go riding really early or late in the day. It's actually been a really beautiful summer, weatherwise, although it got kind of dry for a while but we've had some good soaking rains, good for the farms!
The last few days have been very warm but not humid, however today a heat advisory is in effect.
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You can catch more flies with honey than with vinegar. That's great...if you want to attract vermin.