Nottingham is amazing. I've had beers fermented a smidge too warm turn out fine with it. Perhaps not jaw-dropping, but definitely good.
The beer that you're brewing now is going to do what it does unless you do something like put it in a water bath.
I recommend taking all this awesome energy and excitement you have for getting an accurate temp reading and put it in a simple water bath.
Then by some plywood, two by fours, cheap foam insulation, gap filler and a cheap dorm fridge and making your own fermentation chamber. Can't recommend that enough. I did it on a day off. The best day off I ever spent not brewing.
You'll sleep better at night
