Matthew 16:2 He answered and said unto them, When it is evening, ye say, [It will be] fair weather: for the sky is red.
Matthew 16:3 And in the morning, [It will be] foul weather to day: for the sky is red and lowring. O [ye] hypocrites, ye can discern the face of the sky; but can ye not [discern] the signs of the times?