Manhattan
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Growth Stage
Degree Days
Normal DD
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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 July 19 2025 07:00 (CDT) -- Click column headers to sort data

STATIONWHEATGDDNORMWHEATSTAGENORMWHEATGDDOBSWHEATSTAGEOBS
Ashland 8S4656.0Mature4731.0Mature
Ashland Bottoms4341.0Mature4657.0Mature
Belleville 2W4297.0Mature4292.0Mature
Bennington 3N4311.0Mature4609.0Mature
Bentley 2S GMD4585.0MatureNewNew
Bunker Hill 3NE4262.0Mature4633.0Mature
Butler4513.0Mature4778.0Mature
Cherokee4650.0Mature5011.0Mature
Cheyenne3753.0Mature3975.0Mature
Clay4222.0Mature4492.0Mature
Colby3725.0Mature4126.0Mature
Corning 2NW4122.0Mature4472.0Mature
Elmdale 1SE4214.0Mature4723.0Mature
Flickner Tech Farm4463.0Mature4587.0Mature
Garden City4164.0Mature4518.0Mature
Goodland Tech Farm3676.0Mature4000.0Mature
Gove 5SE3827.0Mature4339.0Mature
Grant4092.0Mature4363.0Mature
Gray4291.0Mature4299.0Mature
Gypsum4189.0Mature4442.0Mature
Hamilton4035.0Mature4357.0Mature
Harper4723.0Mature5021.0Mature
Hays4186.0Mature4528.0Mature
Haysville 3SE4585.0Mature4840.0Mature
Hiawatha3939.0Mature4310.0Mature
Hill City4113.0Mature4473.0Mature
Hodgeman4150.0Mature4515.0Mature
Hoisington 4S4176.0Mature4588.0Mature
Howard 14NW4396.0Mature4695.0Mature
Hutchinson 10SW4282.0Mature4630.0Mature
Hutchinson 1NW GMD4282.0Mature4793.0Mature
Jewell3757.0Mature4488.0Mature
Kinsley 6S4194.0Mature4521.0Mature
La Crosse4009.0Mature4514.0Mature
Lake City4948.0Mature4882.0Mature
Lakin4392.0Mature4385.0Mature
Lane4066.0Mature4231.0Mature
Larned 6SW4390.0Mature4535.0Mature
Lebanon 2SW4018.0Mature4226.0Mature
Leoti3797.0Mature4250.0Mature
Little River 2W4344.0Mature4599.0Mature
Lorraine4241.0Mature4474.0Mature
Ludell 3N3767.0Mature4272.0Mature
Manhattan4313.0Mature4711.0Mature
Mayetta 6W3918.0MatureNewNew
McPherson 1S4349.0Mature4630.0Mature
Meade4293.0Mature4340.0Mature
Miami4312.0Mature4812.0Mature
Mitchell4197.0Mature4381.0Mature
Moscow 10NW4437.0Mature4537.0Mature
Mount Hope 3NE GMD4496.0Mature4760.0Mature
Ness City4062.0Mature4467.0Mature
Norton 4SW3758.0Mature4283.0Mature
Oberlin 7NE3801.0Mature4198.0Mature
Olathe4299.0Mature4734.0Mature
Osborne3863.0Mature4484.0Mature
Oskaloosa 1SE4105.0Mature4588.0Mature
Ottawa 2SE4203.0Mature4609.0Mature
Overbrook4448.0Mature4725.0Mature
Parsons4511.0Mature4912.0Mature
Phillipsburg 1SW3995.0Mature4349.0Mature
Plainville 5N3957.0Mature4569.0Mature
Pretty Prairie GMD4282.0Mature4750.0Mature
Richfield4380.0Mature4389.0Mature
Rock Springs4367.0Mature4609.0Mature
Rocky Ford4088.0Mature4670.0Mature
Rossville 2SE4079.0Mature4612.0Mature
Roth Tech Farm4164.0Mature4308.0Mature
Russell Springs 3SW3834.0Mature4195.0Mature
Satanta4433.0Mature4512.0Mature
Scandia4297.0Mature4193.0Mature
Scott City 3SE3945.0Mature4121.0Mature
Sedan4669.0Mature5030.0Mature
Seguin 3E3986.0Mature4058.0Mature
Sherman3676.0Mature3985.0Mature
Silver Lake 4E4463.0Mature4600.0Mature
Spearville4437.0Mature4447.0Mature
St John 1NW4525.0Mature4587.0Mature
Stanton4425.0Mature4474.0Mature
Sublette 1E4657.0Mature4437.0Mature
Tribune3769.0Mature4118.0Mature
Tribune 6NE3798.0Mature4057.0Mature
Uniontown 3NW4426.0Mature4886.0Mature
Viola4569.0Mature4794.0Mature
WaKeeney4081.0Mature4494.0Mature
Wallace3894.0Mature4064.0Mature
Washington4023.0Mature4379.0Mature
Welda 3E4282.0Mature4778.0Mature
Willis Tech Farm4164.0Mature4374.0Mature
Woodson4375.0Mature4824.0Mature
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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