There are 27,564 recorded sightings of Monarch Butterfly in Pennsylvania, with 2,758 observations documented in the past 12 months. Local sightings are most frequently reported in July through October.
When to See Monarch Butterfly in Pennsylvania
Most often reported in July through October.
| Month | Recorded Sightings | Peak Month |
|---|---|---|
| January | 0 | No |
| February | 2 | No |
| March | 0 | No |
| April | 29 | No |
| May | 85 | No |
| June | 435 | No |
| July | 2,642 | Yes |
| August | 4,386 | Yes |
| September | 2,934 | Yes |
| October | 665 | Yes |
| November | 32 | No |
| December | 5 | No |
Compared With Other Regions
Explore how Monarch Butterfly sightings in Pennsylvania compare to other North American hubs:
Orange wings with black veins and a black border dotted with white make this butterfly instantly familiar. It is found across Mexico, the United States and Canada, and migrates long distances, with many overwintering in Mexican mountain forests. Look in summer for adults and caterpillars on milkweed, and in autumn for streams of migrants heading south.
Other Wildlife to Look for in Pennsylvania
Track Monarch Butterfly in Pennsylvania
See where Monarch Butterfly was reported near you — get alerts when wildlife is spotted nearby.
Frequently Asked Questions
When is the best time to see a Monarch Butterfly in Pennsylvania?
Monarch Butterfly is most often reported in Pennsylvania in July through October, based on GBIF records. Reports partly reflect when more people are outdoors, so sightings in other months are possible.
Where can I see a Monarch Butterfly in Pennsylvania?
There are 27,564 documented Monarch Butterfly records in Pennsylvania. Parks, refuges and protected areas with suitable habitat are the best places to start; the charts above show when it's reported most.
How can I find Monarch Butterfly sightings near me in Pennsylvania?
Use the WildMap app on iOS to see recent reports within 100 km from the past 7 days for free (WildMap Pro: 200 km and 30 days), and turn on alerts for sightings near you in Pennsylvania.