Welcome, here in the desert is 32 degrees considered cold? We get that a few days out of the year. Anyway, can't answer your question directly but cold could have something to do with it. Did you find the push button way down under the dash under the steering wheel next to the foot light to toggle the chirp on/off? Try disabling it then enabling it to see if that makes a difference.
However, if I'm not mistaken, the "chirper" is behind the left front wheel well near the door, maybe it's getting covered in snow/sleet as you drive causing it to become blocked then as it melts, back to normal.