Tremont Phenology Data
Numbers shown are the first day of each year the observed species was seen.
Species 1985   1986   1989   1991   1992   1993   1994   1995   1996   1998   1999   2000   2001   2002   2003   2004   2005   2006   Mean Day of Year   Mean Day   Mean Month   Earliest Day of Year   Earliest Day   Earliest Month   Standard deviation
Dandelion in bloom 52 14 1 3 21 27 16 55 41 4 10 14 26 5 21 21 January 1 1 January 17.7
Honey Bee 47 7 9 14 7 28 46 38 28 50 12 26 26 January 7 7 January 17.1
Wood Frogs Mating/eggs 50 38 29 4 29 27 48 22 42 32 23 41 34 13 17 30 30 January 4 4 January 12.9
Mosquito 32 8 28 54 76 54 44 30 30 45 60 42 11 February 8 8 January 18.8
Bat flying 46 68 27 66 52 57 62 49 42 31 34 51 5 69 47 16 February 5 27 January 18.1
Chorus Frog calling 53 53 54 45 44 48 49 36 47 48 17 February 36 5 February 5.7
Spotted Salamander 42 64 45 56 43 54 51 20 February 42 11 February 8.8
Daffodil in bloom 53 20 37 53 65 52 59 58 44 46 30 63 62 54 68 51 18 February 20 20 January 13.5
Red-winged Blackbird 59 60 65 48 43 43 40 66 51 62 54 23 February 40 9 February 9.8
Chipmunk 54 41 64 77 33 54 23 February 33 2 February 17.6
Violets (blue/purple) in bloom 74 20 44 51 39 40 65 71 58 61 55 57 68 75 71 57 26 February 20 20 January 15.6
Trailing Arbutus in bloom 83 61 71 23 54 74 51 62 49 63 58 64 46 64 34 55 58 57 26 February 23 23 January 14.3
Pine Warbler singing 57 62 59 61 60 1 March 57 26 February 2.2
Long-spurred Violet in bloom 74 40 73 89 92 100 56 68 72 58 34 5 31 61 2 March 5 5 January 27.4
Fence Lizard 23 71 65 55 77 69 64 63 62 71 60 62 3 March 23 23 January 14.2
Spring Peeper 120 75 51 38 53 59 78 32 61 48 73 60 56 62 3 March 32 1 February 22.0
Mourning Cloak Butterfly 53 104 55 39 65 63 57 62 3 March 39 8 February 20.2
Red Maple in bloom 68 52 61 53 43 65 73 58 64 61 59 73 64 66 66 73 62 3 March 43 12 February 8.2
Hepatica in bloom 74 83 70 53 73 65 63 75 30 63 69 46 75 69 79 61 66 7 March 30 30 January 13.3
"Seersucker" Sedge blooming 62 69 66 7 March 62 3 March 4.9
Star Chickweed in bloom 57 87 79 64 48 46 79 75 67 8 March 46 15 February 15.4
Pussytoes in bloom 94 83 68 65 54 69 70 68 72 66 69 73 64 41 55 68 67 8 March 41 10 February 11.7
Spring Beauty in bloom 74 50 53 68 68 65 87 75 64 59 46 76 79 81 68 68 9 March 46 15 February 11.8
Mayfly 78 71 64 66 70 11 March 64 5 March 6.2
Periwinkle in bloom 67 69 64 53 66 60 82 78 87 76 70 11 March 53 22 February 10.5
Violets (yellow) in bloom 85 20 90 77 86 78 71 73 70 86 77 83 74 75 16 March 20 20 January 17.6
Jeanie rides motorcycle to work 74 74 58 59 92 54 82 100 89 76 17 March 54 23 February 16.4
Spicebush in bloom 77 66 88 79 75 87 69 70 78 73 73 81 76 17 March 66 7 March 6.8
Water Snake 29 95 106 44 116 79 78 86 55 76 20 March 29 29 January 28.8
Elm trees blooming 75 78 77 18 March 75 16 March 2.1
Blue-headed Vireo singing 82 69 83 78 19 March 69 10 March 7.8
Toothwort in bloom (Cut-leaf) 74 66 69 88 87 78 87 86 89 70 73 77 73 76 81 78 19 March 66 7 March 7.6
Rue Anemone blooming 80 77 76 81 79 20 March 76 17 March 2.4
Buckeye Leaves out 64 91 71 70 89 79 75 93 75 78 87 78 74 73 88 79 20 March 64 5 March 8.7
Spring Azure butterfly 77 76 88 80 21 March 76 17 March 6.7
Garter snake 80 78 83 81 81 22 March 78 19 March 2.1
Bloodroot blooming 79 77 79 88 81 22 March 77 18 March 4.9
Tiger Swallowtail Butterfly 68 102 79 69 94 80 79 85 84 82 23 March 68 9 March 10.9
Halberd-leaved Violet in bloom 79 88 84 25 March 79 20 March 6.4
Trout Lily in bloom 80 88 84 25 March 80 21 March 5.7
Ring-necked Snake 91 81 63 51 109 118 77 86 87 81 84 25 April 51 20 February 19.5
Louisiana Waterthrush 98 101 93 86 78 75 89 87 78 77 77 82 72 88 87 85 26 March 72 13 March 8.6
Serviceberry in bloom 99 92 75 89 90 80 81 86 94 72 78 78 77 85 93 85 26 March 72 13 March 8.0
Redbud in bloom 84 81 102 81 98 94 77 86 78 78 90 90 87 28 March 77 18 March 8.3
White Trillium in bloom 93 91 88 61 89 96 92 84 105 86 79 79 85 81 88 90 92 87 28 March 61 2 March 9.3
Yellow Trillium in bloom 98 68 62 99 91 91 77 87 97 96 94 87 28 March 62 3 March 12.7
Tulip Tree leafing out 90 88 89 30 March 88 29 March 1.4
Skink 85 97 89 90 31 March 85 26 March 6.1
Bishops Cap/Mitorwort in bloom 94 92 96 88 92 91 99 91 88 79 88 91 1 April 79 20 March 5.2
Black-throated Green Warbler 98 91 111 97 102 86 90 94 84 93 88 82 86 88 92 2 April 82 23 March 7.8
Tiger Beetle 85 96 97 93 3 April 85 26 March 6.7
Yellow-throated Warbler 101 101 97 102 95 86 105 90 108 86 93 83 84 86 90 88 93 3 April 83 24 March 8.0
Fire Pink in bloom 100 101 95 98 94 100 81 75 107 89 94 4 April 75 16 March 9.8
Dogwood in bloom 93 95 88 105 95 89 105 90 98 90 96 87 88 98 96 97 94 4 April 87 28 March 5.6
Bird-foot Violet 104 102 96 96 69 85 97 95 107 95 5 April 69 10 March 11.5
Sweet Gum leafing out 90 95 100 95 5 April 90 31 March 5.0
Copperhead Snake 107 114 68 110 62 117 78 112 134 53 96 6 April 53 22 February 27.7
Luna Moth 106 97 119 110 84 101 92 87 76 98 88 96 6 April 76 17 March 12.5
Black-and-white Warbler 101 111 104 104 95 107 77 94 98 93 93 94 88 88 96 6 April 77 18 March 8.9
Dutchman's Breetches in bloom 99 93 108 97 101 86 97 98 89 96 6 April 86 27 March 6.5
Squawroot/Bear Corn in bloom 105 90 100 91 90 99 84 99 105 111 96 89 97 7 April 84 25 March 8.0
Squirrel Corn in bloom 101 106 84 94 91 99 109 96 95 103 96 88 97 7 April 84 25 March 7.3
Northern Parula 102 102 100 107 96 98 93 93 93 94 97 96 94 97 7 April 93 3 April 4.3
Bluets in bloom 101 91 73 103 114 105 120 88 88 98 8 April 73 14 March 14.6
Morels 106 81 104 90 86 97 117 104 98 8 April 81 22 March 11.9
Dragonfly 102 113 103 66 111 96 80 97 108 105 102 98 8 April 66 7 March 14.0
Jack-in-the-Pulpit in bloom 98 95 105 104 100 100 99 80 95 99 97 100 106 100 106 99 9 April 80 21 March 6.3
Blue-gray Gnatcatcher 107 114 102 95 93 107 96 98 96 96 112 94 95 96 100 10 April 93 3 April 7.0
Columbine in bloom 99 109 101 104 89 102 81 110 102 105 98 101 100 10 April 81 22 March 8.1
Silverbell in bloom 94 101 100 107 107 99 95 100 102 101 95 102 100 100 10 April 94 4 April 4.0
Dwarf Crested Iris in bloom 99 99 95 106 111 102 98 110 98 103 94 102 99 103 98 104 97 101 11 April 94 4 April 4.8
Ruby-throated Hummingbird 100 107 111 98 101 108 106 106 96 97 103 13 April 96 6 April 5.2
Fraser Magnolia in bloom 112 96 95 112 108 94 99 101 96 117 98 108 103 13 April 94 4 April 8.0
Black Rat Snake 105 111 96 101 103 13 April 96 6 April 6.3
Basswood leaves out 108 101 101 109 105 15 April 101 11 April 4.3
Hooded Warbler 103 105 111 102 107 106 16 April 102 12 April 3.6
Red-eyed Vireo singing 100 107 105 108 108 106 16 April 100 10 April 3.4
Firefly 107 107 114 100 109 105 109 111 109 111 108 103 108 18 April 100 10 April 3.8
Silver-spotted skipper 104 113 130 86 108 18 April 86 27 March 18.3
Wood Thrush 107 104 106 103 114 118 109 108 102 107 110 111 111 108 18 April 102 12 April 4.5
Monarch Butterfly 108 107 100 100 91 121 132 109 109 19 April 91 1 April 12.9
Bellwort in bloom 106 109 106 113 109 109 19 April 106 16 April 2.9
Whiporwill singing 113 106 110 108 109 19 April 106 16 April 3.0
Worm-eating Warbler 125 103 109 118 106 105 105 113 104 107 110 20 April 103 13 April 7.1
Yellow Lady's-slipper 107 107 115 110 20 April 107 17 April 4.6
Doghobble in bloom 121 116 103 109 106 111 106 110 20 April 103 13 April 6.3
Showy Orchis in bloom 113 100 110 123 111 114 111 105 105 108 114 110 20 April 100 10 April 6.0
Beech Leaves out 112 106 108 107 120 111 21 April 106 16 April 5.7
Indigo Bunting 111 123 105 113 111 111 116 117 106 109 107 112 22 April 105 15 April 5.3
Mountain Laurel in bloom 120 106 112 71 119 126 116 108 121 119 117 110 116 113 114 118 115 111 113 23 April 71 12 March 11.6
Tulip Poplar in bloom 125 112 119 122 105 115 109 118 111 111 115 25 April 105 15 April 6.2
Scarlet Tanager 123 126 113 116 117 109 107 111 112 115 25 April 107 17 April 6.3
Pawpaw in bloom 118 125 113 111 115 116 26 May 111 21 April 5.5
Yellow Stargrass in bloom 126 110 115 116 132 118 112 114 111 123 112 117 27 April 110 20 April 7.0
Cross Vine in bloom 131 131 115 92 110 120 122 118 117 27 April 92 2 April 12.6
Dutchman's Pipe in bloom 137 108 107 132 110 119 116 131 120 30 April 107 17 April 11.9
Flame Azalea in bloom 125 117 125 115 143 118 126 119 126 113 122 121 109 121 1 May 109 19 April 8.4
Yellow Hawkweed in bloom 127 128 122 118 113 122 2 May 113 23 April 6.3
Pink Lady Slippers in bloom 125 111 119 142 129 112 119 121 120 122 2 May 111 21 April 9.4
Fawn 93 91 168 139 123 3 May 91 1 April 37.4
Galax in bloom 134 133 127 141 114 125 123 114 115 134 130 113 125 6 May 113 23 April 9.5
Fairywand in bloom 134 120 127 7 May 120 30 April 9.9
Blackberries/Raspberries in bloom 143 123 121 142 129 126 123 130 113 128 8 May 113 23 April 9.7
Baby Robin 147 114 147 136 140 137 17 May 114 24 April 13.6
Partridgeberry in bloom 134 149 133 148 129 151 141 21 May 129 9 May 9.7
Rosebay Rhododendron in bloom 148 113 154 162 134 166 164 149 29 May 113 23 April 19.3
Cicada buzzing 144 169 156 149 135 151 31 May 135 15 May 12.8
Jewelweed in boom 134 172 153 2 June 134 14 May 26.9
Cardinal flower in bloom 184 216 200 19 July 184 3 July 22.6
Ironweed in bloom 221 224 204 216 4 August 204 23 July 10.8
Dogwood berries red 258 246 217 240 28 August 217 5 August 21.1
Sourwood leaves turning 258 248 244 267 236 251 8 September 236 24 August 12.1
Fall Yellowthroat passing through 265 268 285 269 272 29 September 265 22 September 9.0
Closed Gentians in bloom 278 273 264 275 273 30 September 264 21 September 6.0
Red Maple leaves turn red 283 281 278 279 273 279 6 October 273 30 September 3.8
First Golden-crowned Kinglet 303 287 294 289 269 265 285 12 October 265 22 September 14.7
Sweet Birch leaves turning 279 286 294 286 13 October 279 6 October 7.5
First hard frost 281 305 275 300 290 17 October 275 2 October 14.5
Oak leaves turning 285 297 291 18 October 285 12 October 8.5
First Junco returns 300 301 281 298 287 292 293 20 October 281 8 October 8.0
Charlie Muise wears pants all day 292 299 300 288 297 295 22 October 288 15 October 5.1
Ladybugs invade homes 293 295 292 303 303 297 24 October 292 19 October 5.4
Toothwort leaves out 318 294 288 291 298 25 October 288 15 October 13.7
Witch Hazel in bloom 294 305 308 302 29 October 294 21 October 7.4
First night without cricket/katydid calls 321 288 305 1 November 288 15 October 23.3
First snow flakes                                                         332   349           341   7   December   332   28   November   12.0