60 butterflies were recorded flying in North Carolina in October in our iNaturalist sample; 7 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top butterflies in October

Monarch

Gulf Fritillary

Common Buckeye

Fiery Skipper

Cloudless Sulphur

Clouded Skipper

Variegated Fritillary

Long-tailed Skipper

Ocola Skipper

Pearl Crescent
Sleepy Orange

Common Checkered-Skipper
All butterflies flying in North Carolina in October
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Monarch | Danaus plexippus | Brush-footed Butterflies | 2,029 | Sep (past peak) |
| 2 | Gulf Fritillary | Dione vanillae | Brush-footed Butterflies | 1,206 | Sep (past peak) |
| 3 | Common Buckeye | Junonia coenia | Brush-footed Butterflies | 973 | Sep (past peak) |
| 4 | Fiery Skipper | Hylephila phyleus | Skippers | 869 | Jul (past peak) |
| 5 | Cloudless Sulphur | Phoebis sennae | Whites, Yellows, and Sulphurs | 809 | Sep (past peak) |
| 6 | Clouded Skipper | Lerema accius | Skippers | 641 | Sep (past peak) |
| 7 | Variegated Fritillary | Euptoieta claudia | Brush-footed Butterflies | 521 | Sep (past peak) |
| 8 | Long-tailed Skipper | Urbanus proteus | Skippers | 513 | Oct (peak) |
| 9 | Ocola Skipper | Panoquina ocola | Skippers | 455 | Oct (peak) |
| 10 | Pearl Crescent | Phyciodes tharos | Brush-footed Butterflies | 452 | Apr (past peak) |
| 11 | Sleepy Orange | Eurema nicippe | Whites, Yellows, and Sulphurs | 367 | Aug (past peak) |
| 12 | Common Checkered-Skipper | Burnsius communis | Skippers | 351 | Oct (peak) |
| 13 | Pipevine Swallowtail | Battus philenor | Swallowtails and Parnassians | 305 | Jul (past peak) |
| 14 | American Lady | Vanessa virginiensis | Brush-footed Butterflies | 255 | Jun (past peak) |
| 15 | Painted Lady | Vanessa cardui | Brush-footed Butterflies | 207 | Aug (past peak) |
| 16 | Eastern Tiger Swallowtail | Papilio glaucus | Swallowtails and Parnassians | 200 | Aug (past peak) |
| 17 | Huron Skipper | Atalopedes huron | Skippers | 199 | Aug (past peak) |
| 18 | Small White | Pieris rapae | Whites, Yellows, and Sulphurs | 186 | Jun (past peak) |
| 19 | Question Mark | Polygonia interrogationis | Brush-footed Butterflies | 184 | May (past peak) |
| 20 | Eastern Tailed-Blue | Everes comyntas | Gossamer-winged Butterflies | 163 | Apr (past peak) |
| 21 | Red Admiral | Vanessa atalanta | Brush-footed Butterflies | 143 | Jul (past peak) |
| 22 | Viceroy | Limenitis archippus | Brush-footed Butterflies | 113 | Sep (past peak) |
| 23 | Silver-spotted Skipper | Epargyreus clarus | Skippers | 101 | Aug (past peak) |
| 24 | Red-banded Hairstreak | Calycopis cecrops | Gossamer-winged Butterflies | 99 | Aug (past peak) |
| 25 | Gray Hairstreak | Strymon melinus | Gossamer-winged Butterflies | 89 | Jul (past peak) |
| 26 | Spicebush Swallowtail | Papilio troilus | Swallowtails and Parnassians | 70 | Aug (past peak) |
| 27 | Eastern Comma | Polygonia comma | Brush-footed Butterflies | 69 | Mar (past peak) |
| 28 | Little Yellow | Eurema lisa | Whites, Yellows, and Sulphurs | 66 | Sep (past peak) |
| 29 | Great Purple Hairstreak | Atlides halesus | Gossamer-winged Butterflies | 46 | Sep (past peak) |
| 30 | Great Spangled Fritillary | Argynnis cybele | Brush-footed Butterflies | 45 | Jun (past peak) |
| 31 | Orange Sulphur | Colias eurytheme | Whites, Yellows, and Sulphurs | 43 | Jul (past peak) |
| 32 | Carolina Satyr | Hermeuptychia sosybius | Brush-footed Butterflies | 43 | Aug (past peak) |
| 33 | Eufala Skipper | Lerodea eufala | Skippers | 42 | Sep (past peak) |
| 34 | Southern Pearly-eye | Lethe portlandia | Brush-footed Butterflies | 42 | Sep (past peak) |
| 35 | Palamedes Swallowtail | Papilio palamedes | Swallowtails and Parnassians | 36 | Aug (past peak) |
| 36 | Brazilian Skipper | Calpodes ethlius | Skippers | 34 | Oct (peak) |
| 37 | Hackberry Emperor | Asterocampa celtis | Brush-footed Butterflies | 28 | Sep (past peak) |
| 38 | Phaon Crescent | Phyciodes phaon | Brush-footed Butterflies | 28 | Oct (peak) |
| 39 | Southern Skipperling | Oarisma minima | Skippers | 27 | Oct (peak) |
| 40 | Eastern Gemmed-Satyr | Cyllopsis gemma | Brush-footed Butterflies | 26 | Apr (past peak) |
| 41 | Least Skipper | Ancyloxypha numitor | Skippers | 24 | Aug (past peak) |
| 42 | Red-spotted Admiral | Limenitis arthemis | Brush-footed Butterflies | 18 | Sep (past peak) |
| 43 | Meadow Fritillary | Boloria bellona | Brush-footed Butterflies | 16 | Jun (past peak) |
| 44 | Queen | Danaus gilippus | Brush-footed Butterflies | 15 | Sep (past peak) |
| 45 | Eastern Giant Swallowtail | Heraclides cresphontes | Swallowtails and Parnassians | 15 | Aug (past peak) |
| 46 | Zebra Longwing | Heliconius charithonia | Brush-footed Butterflies | 14 | Oct (peak) |
| 47 | Black Swallowtail | Papilio polyxenes | Swallowtails and Parnassians | 14 | Aug (past peak) |
| 48 | American Snout | Libytheana carinenta | Brush-footed Butterflies | 14 | Jun (past peak) |
| 49 | White M Hairstreak | Parrhasius m-album | Gossamer-winged Butterflies | 14 | Sep (past peak) |
| 50 | Common Wood-Nymph | Cercyonis pegala | Brush-footed Butterflies | 13 | Jul (past peak) |