Being up North, you will probably get away with it...
My recommendation would be for you to put a parallel resistor mod on the High Fan sensor to drop that cut-in down to 100c or so..[ from 107] ..that only cost about $1 or $2 to do and that would give you the protection if you did run into a hot summer for a few days. Realize that this is a backdoor approach ..the correct way would be to have both fans funtioning. If I were down to a single fan, I would also be sure to clean out both the radiator and condenser fins for max flow/efficiency..
Remember . the fans are most important when the vehicle is not moving ..down a highway, they are not even needed..so , if you are stuck in a City somewhere , I would fix that other fan before it fixes you....
I use that 100C resistor modification for coolant sensing down here in Fl. but never had to in NH.. as a matter of fact, the reason I have the experience with low fan cut-ins and ambient temps is b/c I came from NH and unlike here in Fla, there were many a day my a/c did not call for aux fan just b/c of the Northern climate .
Many guys down here never experience a no a/c fan as normal operation b/c it is usually high enough ambients to be called for all the time. ..so they just do not see that condition.......

Same deal with the high fan .. we always see post where the posters complaint is he never sees a high fan in operation..[this is usually after he has read some post about someone having a legit complaint about his fan circuit, by the way]....well, the question is " Does you temp ever get up to 107C.. if not , don't expect your fan to come on..it may NEVER come on...
it doesn't HAVE TO come on. it is not being Called For , it may not come on as long as you own this car... it is an AUX device ....now go back to your room....