Ok guys, did some looking back at last year to show you records from my weather station and when I found the Camponotus. Hope this helps with predictions:
2016
May 9th, 63F
May 10th, 74F
May 11th, 80F
May 12th, 83F, 22% humidity at ~6pm when flying, barometer 30.01in, Myrmentoma (first observed Camponotus flights)
May 13th, 76F, 0.21" of rain
May 14th, 79F, 0.01" of rain
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May 23rd, 82F
May 24th, 61F, 1.39" of rain
May 25th, 89F
May 26th, 89F, 63% humidity at ~6pm when flying, barometer 30.02in, Myrmentoma, some C. pennsylvanicus
May 27th, 88F
May 28th, 95F, 54% humidity at ~6pm when flying, barometer 30.02in, Most Camponotus species flew, very large flight
NOTE: Those temps are for the day high
EDIT: Clarified some entries based on searching notes
Edited by noebl1, May 15 2017 - 2:39 PM.