Manhattan
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Growth Stage
Degree Days
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Color GDD °F Estimated Wheat Growth Stage
0 to 600 Seedling growth or tillering
600 to 800 Tillering or strongly upright tillers
800 to 1000 Strongly upright tillers or jointing (first node)
1000 to 1200 Jointing (first node) or approaching flag leaf emergence
1200 to 1400 Flag leaf emergence or boot
1400 to 1600 Boot or heading
1600 to 1800 Heading to flowering
1800 to 2000 Heading or flowering
2000 to 2200 Flowering or watery ripe
2200 to 2400 Watery ripe or milk
2400 to 2600 Milk or dough
2600 to 2800 Dough or kernels maturing
2800 to 3000 Dough or kernels maturing
More than 3000 Physiologically mature or approaching harvest

Data as of April 26 2025 05:00 (CDT) -- Click column headers to sort data

STATIONWHEATGDDNORMWHEATSTAGENORMWHEATGDDOBSWHEATSTAGEOBS
Ashland 8S1203.0Flag Leaf1480.0Boot
Ashland Bottoms1024.0Jointing1389.0Flag Leaf
Belleville 2W937.0Upright Tillers1196.0Jointing
Bennington 3N968.0Upright Tillers1343.0Flag Leaf
Bentley 2S GMD1183.0JointingNewNew
Bunker Hill 3NE973.0Upright Tillers1396.0Flag Leaf
Butler1153.0Jointing1490.0Boot
Cherokee1310.0Flag Leaf1669.0Heading
Cheyenne756.0Tillering1020.0Jointing
Clay918.0Upright Tillers1279.0Flag Leaf
Colby732.0Tillering1125.0Jointing
Corning 2NW892.0Upright Tillers1297.0Flag Leaf
Elmdale 1SE980.0Upright Tillers1471.0Boot
Flickner Tech Farm1076.0Jointing1356.0Flag Leaf
Garden City943.0Upright Tillers1356.0Flag Leaf
Goodland Tech Farm750.0Tillering1084.0Jointing
Gove 5SE772.0Tillering1245.0Flag Leaf
Grant932.0Upright Tillers1259.0Flag Leaf
Gray1006.0Jointing1222.0Flag Leaf
Gypsum933.0Upright Tillers1232.0Flag Leaf
Hamilton906.0Upright Tillers1253.0Flag Leaf
Harper1271.0Flag Leaf1615.0Heading
Hays925.0Upright Tillers1320.0Flag Leaf
Haysville 3SE1183.0Jointing1503.0Boot
Hiawatha798.0Tillering1180.0Jointing
Hill City889.0Upright Tillers1277.0Flag Leaf
Hodgeman931.0Upright Tillers1385.0Flag Leaf
Hoisington 4S968.0Upright Tillers1367.0Flag Leaf
Howard 14NW1120.0Jointing1519.0Boot
Hutchinson 10SW986.0Upright Tillers1410.0Boot
Hutchinson 1NW GMD986.0Upright Tillers1468.0Boot
Jewell700.0Tillering1294.0Flag Leaf
Kinsley 6S975.0Upright Tillers1401.0Boot
La Crosse850.0Upright Tillers1310.0Flag Leaf
Lake City1462.0Boot1594.0Boot
Lakin1089.0Jointing1313.0Flag Leaf
Lane898.0Upright Tillers1265.0Flag Leaf
Larned 6SW1050.0Jointing1343.0Flag Leaf
Lebanon 2SW811.0Upright Tillers1142.0Jointing
Leoti791.0Tillering1224.0Flag Leaf
Little River 2W987.0Upright Tillers1396.0Flag Leaf
Lorraine941.0Upright Tillers1287.0Flag Leaf
Ludell 3N747.0Tillering1185.0Jointing
Manhattan986.0Upright Tillers1414.0Boot
Mayetta 6W0SeedlingNewNew
McPherson 1S1011.0Jointing1393.0Flag Leaf
Meade1019.0Jointing1316.0Flag Leaf
Miami1018.0Jointing1486.0Boot
Mitchell901.0Upright Tillers1226.0Flag Leaf
Moscow 10NW1183.0Jointing1407.0Boot
Mount Hope 3NE GMD1115.0Jointing1450.0Boot
Ness City878.0Upright Tillers1320.0Flag Leaf
Norton 4SW708.0Tillering1164.0Jointing
Oberlin 7NE766.0Tillering1139.0Jointing
Olathe1014.0Jointing1472.0Boot
Osborne753.0Tillering1262.0Flag Leaf
Oskaloosa 1SE926.0Upright Tillers1385.0Flag Leaf
Ottawa 2SE970.0Upright Tillers1375.0Flag Leaf
Overbrook1085.0Jointing1458.0Boot
Parsons1187.0Jointing1578.0Boot
Phillipsburg 1SW806.0Upright Tillers1208.0Flag Leaf
Plainville 5N840.0Upright Tillers1330.0Flag Leaf
Pretty Prairie GMD986.0Upright Tillers1482.0Boot
Richfield1126.0Jointing1348.0Flag Leaf
Rock Springs1043.0Jointing1397.0Flag Leaf
Rocky Ford893.0Upright Tillers1376.0Flag Leaf
Rossville 2SE904.0Upright Tillers1341.0Flag Leaf
Roth Tech Farm943.0Upright Tillers1231.0Flag Leaf
Russell Springs 3SW783.0Tillering1207.0Flag Leaf
Satanta1165.0Jointing1402.0Boot
Scandia937.0Upright Tillers1143.0Jointing
Scott City 3SE834.0Upright Tillers1129.0Jointing
Sedan1316.0Flag Leaf1688.0Heading
Seguin 3E855.0Upright Tillers1076.0Jointing
Sherman750.0Tillering1073.0Jointing
Silver Lake 4E1097.0Jointing1332.0Flag Leaf
Spearville1117.0Jointing1312.0Flag Leaf
St John 1NW1139.0Jointing1381.0Flag Leaf
Stanton1145.0Jointing1361.0Flag Leaf
Sublette 1E1324.0Flag Leaf1335.0Flag Leaf
Tribune779.0Tillering1166.0Jointing
Tribune 6NE792.0Tillering1101.0Jointing
Uniontown 3NW1124.0Jointing1579.0Boot
Viola1169.0Jointing1466.0Boot
WaKeeney881.0Upright Tillers1327.0Flag Leaf
Wallace820.0Upright Tillers1106.0Jointing
Washington810.0Upright Tillers1234.0Flag Leaf
Welda 3E1030.0Jointing1515.0Boot
Willis Tech Farm943.0Upright Tillers1314.0Flag Leaf
Woodson1099.0Jointing1539.0Boot
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Calculate Growing Degrees for a custom date range. Using . To change station, select from "Change Station" dropdown above. Available dates start at station's period of record (2010 for our oldest stations) and continue until yesterday.
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Observed GDD:

Norm GDD:

Growing Degrees =     Daily Max Air Temp + Daily Min Air Temp   - 32
2
Negative values are set to 0