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 18 2025 17:20 (CDT) -- Click column headers to sort data

STATIONWHEATGDDNORMWHEATSTAGENORMWHEATGDDOBSWHEATSTAGEOBS
Ashland 8S4606.0Mature4681.0Mature
Ashland Bottoms4293.0Mature4611.0Mature
Belleville 2W4248.0Mature4248.0Mature
Bennington 3N4261.0Mature4561.0Mature
Bentley 2S GMD4537.0MatureNewNew
Bunker Hill 3NE4214.0Mature4585.0Mature
Butler4465.0Mature4728.0Mature
Cherokee4602.0Mature4961.0Mature
Cheyenne3707.0Mature3928.0Mature
Clay4174.0Mature4446.0Mature
Colby3680.0Mature4079.0Mature
Corning 2NW4076.0Mature4428.0Mature
Elmdale 1SE4167.0Mature4675.0Mature
Flickner Tech Farm4414.0Mature4538.0Mature
Garden City4117.0Mature4470.0Mature
Goodland Tech Farm3632.0Mature3955.0Mature
Gove 5SE3781.0Mature4292.0Mature
Grant4046.0Mature4316.0Mature
Gray4243.0Mature4251.0Mature
Gypsum4141.0Mature4394.0Mature
Hamilton3989.0Mature4309.0Mature
Harper4673.0Mature4971.0Mature
Hays4138.0Mature4479.0Mature
Haysville 3SE4537.0Mature4790.0Mature
Hiawatha3893.0Mature4269.0Mature
Hill City4065.0Mature4425.0Mature
Hodgeman4102.0Mature4468.0Mature
Hoisington 4S4129.0Mature4540.0Mature
Howard 14NW4348.0Mature4647.0Mature
Hutchinson 10SW4234.0Mature4582.0Mature
Hutchinson 1NW GMD4234.0Mature4744.0Mature
Jewell3711.0Mature4442.0Mature
Kinsley 6S4146.0Mature4475.0Mature
La Crosse3962.0Mature4466.0Mature
Lake City4899.0Mature4832.0Mature
Lakin4344.0Mature4339.0Mature
Lane4019.0Mature4184.0Mature
Larned 6SW4341.0Mature4489.0Mature
Lebanon 2SW3970.0Mature4179.0Mature
Leoti3752.0Mature4204.0Mature
Little River 2W4295.0Mature4552.0Mature
Lorraine4193.0Mature4424.0Mature
Ludell 3N3721.0Mature4224.0Mature
Manhattan4265.0Mature4665.0Mature
Mayetta 6W3873.0MatureNewNew
McPherson 1S4300.0Mature4581.0Mature
Meade4245.0Mature4292.0Mature
Miami4265.0Mature4764.0Mature
Mitchell4149.0Mature4334.0Mature
Moscow 10NW4390.0Mature4490.0Mature
Mount Hope 3NE GMD4447.0Mature4711.0Mature
Ness City4014.0Mature4418.0Mature
Norton 4SW3712.0Mature4235.0Mature
Oberlin 7NE3755.0Mature4151.0Mature
Olathe4251.0Mature4687.0Mature
Osborne3816.0Mature4436.0Mature
Oskaloosa 1SE4059.0Mature4543.0Mature
Ottawa 2SE4156.0Mature4562.0Mature
Overbrook4400.0Mature4678.0Mature
Parsons4463.0Mature4862.0Mature
Phillipsburg 1SW3947.0Mature4301.0Mature
Plainville 5N3910.0Mature4521.0Mature
Pretty Prairie GMD4234.0Mature4701.0Mature
Richfield4332.0Mature4343.0Mature
Rock Springs4319.0Mature4562.0Mature
Rocky Ford4041.0Mature4624.0Mature
Rossville 2SE4033.0Mature4566.0Mature
Roth Tech Farm4117.0Mature4261.0Mature
Russell Springs 3SW3788.0Mature4150.0Mature
Satanta4385.0Mature4464.0Mature
Scandia4248.0Mature4148.0Mature
Scott City 3SE3899.0Mature4075.0Mature
Sedan4621.0Mature4982.0Mature
Seguin 3E3940.0Mature4011.0Mature
Sherman3632.0Mature3939.0Mature
Silver Lake 4E4415.0Mature4555.0Mature
Spearville4389.0Mature4400.0Mature
St John 1NW4476.0Mature4539.0Mature
Stanton4377.0Mature4428.0Mature
Sublette 1E4609.0Mature4388.0Mature
Tribune3724.0Mature4072.0Mature
Tribune 6NE3752.0Mature4012.0Mature
Uniontown 3NW4378.0Mature4838.0Mature
Viola4520.0Mature4745.0Mature
WaKeeney4033.0Mature4446.0Mature
Wallace3848.0Mature4018.0Mature
Washington3975.0Mature4335.0Mature
Welda 3E4235.0Mature4731.0Mature
Willis Tech Farm4117.0Mature4327.0Mature
Woodson4327.0Mature4776.0Mature
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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