Cross reference
Matthew 16:2
2 He answered and said unto them, When it is evening, ye say, It will be fair weather: for the sky is red.
Luke 12:54-56
54 And he said also to the people, When ye see a cloud rise out of the west, straightway ye say, There cometh a shower; and so it is.
55 And when ye see the south wind blow, ye say, There will be heat; and it cometh to pass.
56 Ye hypocrites, ye can discern the face of the sky and of the earth; but how is it that ye do not discern this time?