Yes, but... if airport, then maybe radar. Radio is funny... my wireless backhaul to a detached garage (no vegetation) is at its weakest in heat/humidity/summer and stronger in winter, especially with snow on the ground. Simiar observation for neighboring WiFi. This doesn't support more radar now for you or since a recent firmware change, but... radio is funny.
OE
not debating or denying that radar may be affecting things, but if it is, that’s a change or bug in the latest version.