These values ME reads from OFFHistoricalWeather files. If you use Buckeye Bob's weather mod (I use it either), then these values were extracted from his modded file. Can you specify a mission date, when this happened, so we (or Buckeye Bob) can make necessary correction?
Weather: Mostly sunny. Strong winds from the west.
That line is not in any of my weather files, so it must come from WOFF.