Past Perfect by definition - demarcates 2 time frames of action, one that happened in the past, and other that happened prior to this past action.
In this particular sentence, no such time reference is evident. Thus use of past perfect will be inappropriate.
Past perfect is best use, when 2 events of past are explaining 2 different time frames, but to note here, these 2 events must be related events.
"By the time I reached, my friend had left my house." (my reaching home and my friend' leaving have related consequences, may be i was supposed to meet my friend)
In your sentence, the earlier weather has no bearing on the current scenario, thus a simple past is appropriate and not past perfect
Hope this helps
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