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 15 2025 18:00 (CDT) -- Click column headers to sort data

STATIONWHEATGDDNORMWHEATSTAGENORMWHEATGDDOBSWHEATSTAGEOBS
Ashland 8S4456.0Mature4541.0Mature
Ashland Bottoms4149.0Mature4474.0Mature
Belleville 2W4101.0Mature4125.0Mature
Bennington 3N4111.0Mature4423.0Mature
Bentley 2S GMD4393.0MatureNewNew
Bunker Hill 3NE4070.0Mature4453.0Mature
Butler4321.0Mature4585.0Mature
Cherokee4458.0Mature4818.0Mature
Cheyenne3569.0Mature3808.0Mature
Clay4030.0Mature4314.0Mature
Colby3545.0Mature3958.0Mature
Corning 2NW3937.0Mature4299.0Mature
Elmdale 1SE4026.0Mature4534.0Mature
Flickner Tech Farm4267.0Mature4396.0Mature
Garden City3976.0Mature4335.0Mature
Goodland Tech Farm3500.0Mature3839.0Mature
Gove 5SE3643.0Mature4162.0Mature
Grant3908.0Mature4190.0Mature
Gray4099.0Mature4117.0Mature
Gypsum3997.0Mature4253.0Mature
Hamilton3851.0Mature4182.0Mature
Harper4523.0Mature4827.0Mature
Hays3994.0Mature4346.0Mature
Haysville 3SE4393.0Mature4646.0Mature
Hiawatha3755.0Mature4142.0Mature
Hill City3921.0Mature4296.0Mature
Hodgeman3958.0Mature4330.0Mature
Hoisington 4S3988.0Mature4399.0Mature
Howard 14NW4204.0Mature4510.0Mature
Hutchinson 10SW4090.0Mature4439.0Mature
Hutchinson 1NW GMD4090.0Mature4596.0Mature
Jewell3573.0Mature4316.0Mature
Kinsley 6S4002.0Mature4337.0Mature
La Crosse3823.0Mature4326.0Mature
Lake City4752.0Mature4690.0Mature
Lakin4200.0Mature4213.0Mature
Lane3878.0Mature4057.0Mature
Larned 6SW4194.0Mature4351.0Mature
Lebanon 2SW3828.0Mature4056.0Mature
Leoti3617.0Mature4079.0Mature
Little River 2W4148.0Mature4413.0Mature
Lorraine4049.0Mature4286.0Mature
Ludell 3N3583.0Mature4099.0Mature
Manhattan4121.0Mature4528.0Mature
Mayetta 6W3738.0MatureNewNew
McPherson 1S4153.0Mature4438.0Mature
Meade4101.0Mature4160.0Mature
Miami4124.0Mature4620.0Mature
Mitchell4005.0Mature4203.0Mature
Moscow 10NW4249.0Mature4361.0Mature
Mount Hope 3NE GMD4301.0Mature4569.0Mature
Ness City3870.0Mature4276.0Mature
Norton 4SW3574.0Mature4108.0Mature
Oberlin 7NE3617.0Mature4025.0Mature
Olathe4110.0Mature4545.0Mature
Osborne3677.0Mature4303.0Mature
Oskaloosa 1SE3921.0Mature4406.0Mature
Ottawa 2SE4015.0Mature4421.0Mature
Overbrook4256.0Mature4538.0Mature
Parsons4319.0Mature4720.0Mature
Phillipsburg 1SW3803.0Mature4174.0Mature
Plainville 5N3769.0Mature4390.0Mature
Pretty Prairie GMD4090.0Mature4559.0Mature
Richfield4188.0Mature4215.0Mature
Rock Springs4175.0Mature4424.0Mature
Rocky Ford3901.0Mature4487.0Mature
Rossville 2SE3895.0Mature4429.0Mature
Roth Tech Farm3976.0Mature4133.0Mature
Russell Springs 3SW3650.0Mature4028.0Mature
Satanta4241.0Mature4328.0Mature
Scandia4101.0Mature4026.0Mature
Scott City 3SE3761.0Mature3949.0Mature
Sedan4477.0Mature4840.0Mature
Seguin 3E3802.0Mature3888.0Mature
Sherman3500.0Mature3822.0Mature
Silver Lake 4E4271.0Mature4419.0Mature
Spearville4245.0Mature4261.0Mature
St John 1NW4329.0Mature4396.0Mature
Stanton4233.0Mature4320.0Mature
Sublette 1E4465.0Mature4252.0Mature
Tribune3589.0Mature3953.0Mature
Tribune 6NE3614.0Mature3890.0Mature
Uniontown 3NW4234.0Mature4697.0Mature
Viola4373.0Mature4604.0Mature
WaKeeney3889.0Mature4317.0Mature
Wallace3710.0Mature3900.0Mature
Washington3831.0Mature4208.0Mature
Welda 3E4096.0Mature4588.0Mature
Willis Tech Farm3976.0Mature4197.0Mature
Woodson4183.0Mature4636.0Mature
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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