ambient air sensor problem?

[MannyC]

i had a western midweight plow professionally installed on the 2010 dodge megacab diesel. all is working great. i was running the truck today, and the outside temperature read between 66 and 80 degrees! i know there is an air temp sender in the grill. can the plow divert that much air that the engine compartment will hold enough heat to raise the sensor's temp? won't be removing the plow for a few days with all this so, so figured id ask. thanks!