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 05 2025 17:40 (CDT) -- Click column headers to sort data

STATIONWHEATGDDNORMWHEATSTAGENORMWHEATGDDOBSWHEATSTAGEOBS
Ashland 8S3959.0Mature4086.0Mature
Ashland Bottoms3669.0Mature4006.0Mature
Belleville 2W3620.0Mature3682.0Mature
Bennington 3N3627.0Mature3955.0Mature
Bentley 2S GMD3913.0MatureNewNew
Bunker Hill 3NE3590.0Mature3974.0Mature
Butler3842.0Mature4112.0Mature
Cherokee3985.0Mature4343.0Mature
Cheyenne3117.0Mature3369.0Mature
Clay3551.0Mature3845.0Mature
Colby3103.0Mature3514.0Mature
Corning 2NW3477.0Mature3876.0Mature
Elmdale 1SE3564.0Mature4056.0Mature
Flickner Tech Farm3779.0Mature3924.0Mature
Garden City3510.0Mature3875.0Mature
Goodland Tech Farm3060.0Mature3409.0Mature
Gove 5SE3187.0Mature3704.0Mature
Grant3448.0Mature3743.0Mature
Gray3622.0Mature3678.0Mature
Gypsum3517.0Mature3788.0Mature
Hamilton3391.0Mature3736.0Mature
Harper4026.0Mature4348.0Mature
Hays3517.0Mature3863.0Mature
Haysville 3SE3913.0Mature4167.0Mature
Hiawatha3315.0Mature3692.0Mature
Hill City3443.0Mature3818.0Mature
Hodgeman3483.0Mature3878.0Mature
Hoisington 4S3528.0Mature3931.0Mature
Howard 14NW3738.0Mature4094.0Mature
Hutchinson 10SW3610.0Mature3974.0Mature
Hutchinson 1NW GMD3610.0Mature4116.0Mature
Jewell3113.0Mature3854.0Mature
Kinsley 6S3534.0Mature3895.0Mature
La Crosse3363.0Mature3848.0Mature
Lake City4265.0Mature4228.0Mature
Lakin3720.0Mature3770.0Mature
Lane3418.0Mature3737.0Mature
Larned 6SW3710.0Mature3891.0Mature
Lebanon 2SW3358.0Mature3602.0Mature
Leoti3169.0Mature3633.0Mature
Little River 2W3663.0Mature3953.0Mature
Lorraine3569.0Mature3823.0Mature
Ludell 3N3128.0Mature3648.0Mature
Manhattan3641.0Mature4053.0Mature
Mayetta 6W3295.0MatureNewNew
McPherson 1S3673.0Mature3960.0Mature
Meade3624.0Mature3730.0Mature
Miami3660.0Mature4137.0Mature
Mitchell3525.0Mature3740.0Mature
Moscow 10NW3785.0Mature3913.0Mature
Mount Hope 3NE GMD3821.0Mature4094.0Mature
Ness City3402.0Mature3806.0Mature
Norton 4SW3114.0Mature3640.0Mature
Oberlin 7NE3161.0Mature3578.0Mature
Olathe3644.0Mature4064.0Mature
Osborne3218.0Mature3825.0Mature
Oskaloosa 1SE3463.0Mature3943.0Mature
Ottawa 2SE3555.0Mature3948.0Mature
Overbrook3776.0Mature4059.0Mature
Parsons3844.0Mature4241.0Mature
Phillipsburg 1SW3325.0Mature3701.0Mature
Plainville 5N3309.0Mature3904.0Mature
Pretty Prairie GMD3610.0Mature4090.0Mature
Richfield3713.0Mature3775.0Mature
Rock Springs3696.0Mature3956.0Mature
Rocky Ford3441.0Mature4013.0Mature
Rossville 2SE3439.0Mature3955.0Mature
Roth Tech Farm3510.0Mature3690.0Mature
Russell Springs 3SW3191.0Mature3595.0Mature
Satanta3773.0Mature3893.0Mature
Scandia3620.0Mature3583.0Mature
Scott City 3SE3301.0Mature3510.0Mature
Sedan3999.0Mature4363.0Mature
Seguin 3E3342.0Mature3443.0Mature
Sherman3060.0Mature3390.0Mature
Silver Lake 4E3791.0Mature3950.0Mature
Spearville3765.0Mature3807.0Mature
St John 1NW3843.0Mature3940.0Mature
Stanton3755.0Mature3876.0Mature
Sublette 1E3990.0Mature3809.0Mature
Tribune3143.0Mature3528.0Mature
Tribune 6NE3168.0Mature3462.0Mature
Uniontown 3NW3772.0Mature4228.0Mature
Viola3890.0Mature4131.0Mature
WaKeeney3416.0Mature3843.0Mature
Wallace3251.0Mature3473.0Mature
Washington3366.0Mature3757.0Mature
Welda 3E3636.0Mature4117.0Mature
Willis Tech Farm3510.0Mature3763.0Mature
Woodson3723.0Mature4166.0Mature
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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