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 14 2025 16:00 (CDT) -- Click column headers to sort data

STATIONWHEATGDDNORMWHEATSTAGENORMWHEATGDDOBSWHEATSTAGEOBS
Ashland 8S4406.0Mature4498.0Mature
Ashland Bottoms4101.0Mature4428.0Mature
Belleville 2W4052.0Mature4080.0Mature
Bennington 3N4062.0Mature4377.0Mature
Bentley 2S GMD4345.0MatureNewNew
Bunker Hill 3NE4022.0Mature4405.0Mature
Butler4273.0Mature4539.0Mature
Cherokee4410.0Mature4770.0Mature
Cheyenne3523.0Mature3763.0Mature
Clay3982.0Mature4268.0Mature
Colby3500.0Mature3912.0Mature
Corning 2NW3891.0Mature4252.0Mature
Elmdale 1SE3979.0Mature4486.0Mature
Flickner Tech Farm4218.0Mature4350.0Mature
Garden City3929.0Mature4290.0Mature
Goodland Tech Farm3456.0Mature3795.0Mature
Gove 5SE3597.0Mature4117.0Mature
Grant3862.0Mature4148.0Mature
Gray4051.0Mature4075.0Mature
Gypsum3949.0Mature4206.0Mature
Hamilton3805.0Mature4138.0Mature
Harper4473.0Mature4780.0Mature
Hays3946.0Mature4298.0Mature
Haysville 3SE4345.0Mature4599.0Mature
Hiawatha3711.0Mature4101.0Mature
Hill City3873.0Mature4248.0Mature
Hodgeman3910.0Mature4287.0Mature
Hoisington 4S3942.0Mature4352.0Mature
Howard 14NW4157.0Mature4463.0Mature
Hutchinson 10SW4042.0Mature4393.0Mature
Hutchinson 1NW GMD4042.0Mature4549.0Mature
Jewell3527.0Mature4267.0Mature
Kinsley 6S3954.0Mature4294.0Mature
La Crosse3777.0Mature4278.0Mature
Lake City4703.0Mature4644.0Mature
Lakin4152.0Mature4170.0Mature
Lane3832.0Mature4013.0Mature
Larned 6SW4145.0Mature4306.0Mature
Lebanon 2SW3781.0Mature4011.0Mature
Leoti3572.0Mature4034.0Mature
Little River 2W4099.0Mature4367.0Mature
Lorraine4001.0Mature4241.0Mature
Ludell 3N3537.0Mature4051.0Mature
Manhattan4073.0Mature4482.0Mature
Mayetta 6W3693.0MatureNewNew
McPherson 1S4105.0Mature4390.0Mature
Meade4053.0Mature4120.0Mature
Miami4077.0Mature4573.0Mature
Mitchell3957.0Mature4156.0Mature
Moscow 10NW4202.0Mature4317.0Mature
Mount Hope 3NE GMD4253.0Mature4523.0Mature
Ness City3822.0Mature4231.0Mature
Norton 4SW3528.0Mature4059.0Mature
Oberlin 7NE3571.0Mature3979.0Mature
Olathe4063.0Mature4498.0Mature
Osborne3631.0Mature4255.0Mature
Oskaloosa 1SE3875.0Mature4362.0Mature
Ottawa 2SE3969.0Mature4376.0Mature
Overbrook4208.0Mature4491.0Mature
Parsons4271.0Mature4672.0Mature
Phillipsburg 1SW3755.0Mature4126.0Mature
Plainville 5N3723.0Mature4341.0Mature
Pretty Prairie GMD4042.0Mature4513.0Mature
Richfield4140.0Mature4172.0Mature
Rock Springs4127.0Mature4378.0Mature
Rocky Ford3855.0Mature4441.0Mature
Rossville 2SE3849.0Mature4383.0Mature
Roth Tech Farm3929.0Mature4091.0Mature
Russell Springs 3SW3604.0Mature3984.0Mature
Satanta4193.0Mature4287.0Mature
Scandia4052.0Mature3981.0Mature
Scott City 3SE3715.0Mature3906.0Mature
Sedan4429.0Mature4792.0Mature
Seguin 3E3756.0Mature3843.0Mature
Sherman3456.0Mature3778.0Mature
Silver Lake 4E4223.0Mature4374.0Mature
Spearville4197.0Mature4217.0Mature
St John 1NW4280.0Mature4350.0Mature
Stanton4185.0Mature4277.0Mature
Sublette 1E4417.0Mature4210.0Mature
Tribune3544.0Mature3911.0Mature
Tribune 6NE3568.0Mature3847.0Mature
Uniontown 3NW4186.0Mature4649.0Mature
Viola4324.0Mature4557.0Mature
WaKeeney3841.0Mature4269.0Mature
Wallace3664.0Mature3856.0Mature
Washington3783.0Mature4162.0Mature
Welda 3E4050.0Mature4541.0Mature
Willis Tech Farm3929.0Mature4155.0Mature
Woodson4137.0Mature4589.0Mature
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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