Najran experiences mild winters, with temperatures ranging from 6-32°C in January and December. Spring is warm, with March to May averaging highs of 36-41°C. Summer months are hot, with July and August reaching average highs of 42°C. Autumn brings a slight cooling, with September's high temperatures returning to the mid-30s by October. Winters return again in November and December, with lows dipping back down to around 6°C.