Date: 09/30/2016

Number: 114

Total September Monarch Butterfly observations since 2010:
Year Seen Peak Date Seen
2010 856 Sept. 8th 521
2011 169 Sept. 14th 144
2012* 26 Sept. 7th 20
2013 295 Sept. 12th 224
2014 940 Sept. 16th 606
2015 885 Sept. 11th 482
2016+ 114 Sept. 17th 41
* Drought and continuous southerly winds.
+ Mini drought and very cool spring weather to end of June. No eggs or larva observed on 500 acres around Harrisville with plenty of milkweed. First returning monarch observed mid July and only 6 seen to early August.

Harrisville, MI

Latitude: 44.7 Longitude: -83.3

Observed by: Frank
Contact Observer

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