36 butterflies were recorded flying in Illinois in November in our iNaturalist sample; 0 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top butterflies in November

Common Buckeye

Orange Sulphur

Painted Lady

Fiery Skipper

Eastern Comma

Monarch

Small White

Variegated Fritillary

Cloudless Sulphur

Red Admiral
Huron Skipper

Black Swallowtail
All butterflies flying in Illinois in November
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Common Buckeye | Junonia coenia | Brush-footed Butterflies | 128 | Aug (past peak) |
| 2 | Orange Sulphur | Colias eurytheme | Whites, Yellows, and Sulphurs | 85 | Sep (past peak) |
| 3 | Painted Lady | Vanessa cardui | Brush-footed Butterflies | 84 | Sep (past peak) |
| 4 | Fiery Skipper | Hylephila phyleus | Skippers | 82 | Sep (past peak) |
| 5 | Eastern Comma | Polygonia comma | Brush-footed Butterflies | 61 | Jul (past peak) |
| 6 | Monarch | Danaus plexippus | Brush-footed Butterflies | 46 | Aug (past peak) |
| 7 | Small White | Pieris rapae | Whites, Yellows, and Sulphurs | 42 | Jul (past peak) |
| 8 | Variegated Fritillary | Euptoieta claudia | Brush-footed Butterflies | 35 | Sep (past peak) |
| 9 | Cloudless Sulphur | Phoebis sennae | Whites, Yellows, and Sulphurs | 25 | Aug (past peak) |
| 10 | Red Admiral | Vanessa atalanta | Brush-footed Butterflies | 17 | Jul (past peak) |
| 11 | Huron Skipper | Atalopedes huron | Skippers | 17 | Sep (past peak) |
| 12 | Black Swallowtail | Papilio polyxenes | Swallowtails and Parnassians | 15 | Jul (past peak) |
| 13 | Pearl Crescent | Phyciodes tharos | Brush-footed Butterflies | 11 | Jul (past peak) |
| 14 | Little Yellow | Eurema lisa | Whites, Yellows, and Sulphurs | 11 | Jul (past peak) |
| 15 | Clouded Sulphur | Colias philodice | Whites, Yellows, and Sulphurs | 10 | Sep (past peak) |
| 16 | Sleepy Orange | Eurema nicippe | Whites, Yellows, and Sulphurs | 8 | Jul (past peak) |
| 17 | Mourning Cloak | Nymphalis antiopa | Brush-footed Butterflies | 7 | Jun (past peak) |
| 18 | Eastern Tiger Swallowtail | Papilio glaucus | Swallowtails and Parnassians | 6 | Aug (past peak) |
| 19 | American Lady | Vanessa virginiensis | Brush-footed Butterflies | 4 | May (past peak) |
| 20 | Gray Hairstreak | Strymon melinus | Gossamer-winged Butterflies | 4 | Sep (past peak) |
| 21 | Dainty Sulphur | Nathalis iole | Whites, Yellows, and Sulphurs | 4 | Oct (past peak) |
| 22 | Checkered White | Pontia protodice | Whites, Yellows, and Sulphurs | 4 | Aug (past peak) |
| 23 | Common Checkered-Skipper | Burnsius communis | Skippers | 4 | Oct (past peak) |
| 24 | Eastern Tailed-Blue | Everes comyntas | Gossamer-winged Butterflies | 3 | Jul (past peak) |
| 25 | Question Mark | Polygonia interrogationis | Brush-footed Butterflies | 3 | Jul (past peak) |
| 26 | Gray Comma | Polygonia progne | Brush-footed Butterflies | 3 | Jul (past peak) |
| 27 | Gulf Fritillary | Dione vanillae | Brush-footed Butterflies | 2 | Sep (past peak) |
| 28 | Hackberry Emperor | Asterocampa celtis | Brush-footed Butterflies | 2 | Aug (past peak) |
| 29 | Silver-spotted Skipper | Epargyreus clarus | Skippers | 2 | Jul (past peak) |
| 30 | Ocola Skipper | Panoquina ocola | Skippers | 2 | Oct (past peak) |
| 31 | California Tortoiseshell | Nymphalis californica | Brush-footed Butterflies | 1 | Jul (past peak) |
| 32 | Pipevine Swallowtail | Battus philenor | Swallowtails and Parnassians | 1 | Jul (past peak) |
| 33 | Spicebush Swallowtail | Papilio troilus | Swallowtails and Parnassians | 1 | Jul (past peak) |
| 34 | American Snout | Libytheana carinenta | Brush-footed Butterflies | 1 | Jul (past peak) |
| 35 | Southern Dogface | Zerene cesonia | Whites, Yellows, and Sulphurs | 1 | Aug (past peak) |
| 36 | Peck's Skipper | Polites peckius | Skippers | 1 | Aug (past peak) |