In the winter when it's overcast, clouds at night are much brighter or more easily illuminated (unsure if they appear above cities/towns only) than in summer, making them look orange at night. I don't remember ever having seen nights with such clouds in the summer, I only know them from the winter. Why are those clouds so bright/orange only during the winter? Aren't they the same clouds it rains from in the summer?

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    $\begingroup$ I think your question is answered here in the question Is there a seasonal difference in the average cloud floor? $\endgroup$
    – justCal
    Commented Dec 12, 2022 at 21:23
  • $\begingroup$ your question is a bit unclear to me is this what you are asking en.wikipedia.org/wiki/Noctilucent_cloud or do you ask about clouds iluminated from below by the sun or city lights?.please edit the information into your question. $\endgroup$ Commented Dec 13, 2022 at 6:00
  • $\begingroup$ @justCal So the simple answer would be that winter clouds are lower because of the lower temperature. Well, perhaps this and the fact that summer nights are short enough that you hardly ever see low enough clouds that are rarer in summer. This could explain it. $\endgroup$
    – Giovanni
    Commented Dec 13, 2022 at 6:59
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    $\begingroup$ @trondhansen No, I'm asking on normal water clouds at low altitudes when it's overcast. I don't need to edit because the term "overcast" isn't used with noctilucent clouds. $\endgroup$
    – Giovanni
    Commented Dec 13, 2022 at 7:00
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    $\begingroup$ Yes, and the orange tint you are noticing may be due to the use of sodium vapor street lights. $\endgroup$
    – justCal
    Commented Dec 13, 2022 at 12:28


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