Red River Valley, North Dakota / Soybeans
Total GDD:
1585
(Sep 20)
Day 134 / 134 (100%)
Current Season
Total GDD:
1585
(Sep 20)
Method: 50°F | 86°F max
7-Day Daily Avg: 10.5
7-Day Projection: 1659 by Sep 27
Season: May 10, 25 - Sep 20, 2025
Key Freeze Dates (32°F)
Last Freeze:
10%: 05-04
50%: 05-15
90%: 05-23
10%: 05-04
50%: 05-15
90%: 05-23
First Freeze:
10%: 09-11
50%: 09-29
90%: 10-11
10%: 09-11
50%: 09-29
90%: 10-11
Growing Degree Days (GDD) track heat accumulation to predict when plants reach growth stages, pests emerge, and diseases become active.
Thresholds mark specific GDD values when events typically occur, with crossing dates showing when your season reaches each milestone.
Thresholds & Notes
VE - Emergence
120
°D
May 23, 2025
|
May 23, 2024
|
May 20, 2023
|
May 27, 2022
Growth Stage
V3 - Third Trifoliate
325
°D
Jun 12, 2025
|
Jun 14, 2024
|
Jun 1, 2023
|
Jun 11, 2022
Growth Stage
V6 - Sixth Trifoliate
500
°D
Jun 26, 2025
|
Jun 28, 2024
|
Jun 8, 2023
|
Jun 20, 2022
Growth Stage
R1 - Beginning Bloom
900
°D
Jul 25, 2025
|
Jul 24, 2024
|
Jul 1, 2023
|
Jul 9, 2022
Growth Stage
R3 - Beginning Pod
1100
°D
Aug 8, 2025
|
Aug 4, 2024
|
Jul 15, 2023
|
Jul 18, 2022
Growth Stage
R5 - Beginning Seed
1400
°D
Aug 31, 2025
|
Aug 27, 2024
|
Aug 3, 2023
|
Aug 3, 2022
Growth Stage
R6 - Full Seed
1700
°D
Sep 19, 2024
|
Aug 25, 2023
|
Aug 21, 2022
Growth Stage
R7 - Beginning Maturity
1900
°D
Sep 7, 2023
|
Sep 2, 2022
Growth Stage