Climate Dashboard for NC Corn Growers
This tool provides corn growers in North Carolina with climate-based information and predictions about seasonal corn development. To use this tool, select your location and planting date (past or anticipated) and click “Update Chart”. Scroll down to see forecasts. This tool was sponsored by the Corn Growers Association of North Carolina. Learn more about this tool, the datasets and calculations used, and a tutorial on our About Page.
1. Select Your Location
Planting Guidance Chart for 35.724°N -78.683 °E
Based on Today's Date
Corn germination is based on an accumulation of at least 40-50 GDDs over the next 4-5 days (of the current date, not the planting date). This table shows the predicted accumulation of GDDs over the next 5 days, starting with each date.
| Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|
| Sep 15 | Sep 16 | Sep 17 | Sep 18 | Sep 19 | Sep 20 112 | Sep 21 107 |
| Sep 22 106 | Sep 23 104 | Sep 24 104 | Sep 25 108 | Sep 26 87 | Sep 27 66 | Sep 28 44 |
Numbers in each box indicate the forecasted 5-day accumulated GDDs, starting on the given date. Daily GDDs are based on NWS Forecasts for days 0-7, and on historical averages for days 8+. 5-day accumulations shown may be based on a combination of NWS forecasts and historical data.
Please Note: Actual conditions may differ from local forecasts and historical averages. We recommend you return to this tool for updated forecast information.
Please Note: Actual conditions may differ from local forecasts and historical averages. We recommend you return to this tool for updated forecast information.
Output Chart
Crop Stages
| Code | Stage | Threshold | Predicted Date | Accum GDD as of Predicted Date |
|---|---|---|---|---|
| V0 | Planted | Sat, Sep 20 2025 | 25 | |
| Today | Sat, Sep 20 2025 | 22 | ||
| V2 | Two Leaves Fully Emerged | 200 | Mon, Sep 29 2025 | 218 |
| V4 | Four Leaves Fully Emerged | 345 | Mon, Oct 6 2025 | 347 |
| V6 | Six Leaves Fully Emerged | 475 | Tue, Oct 14 2025 | 476 |
| V8 | Eight Leaves Fully Emerged | 610 | Tue, Oct 28 2025 | 610 |
| V10 | Tenth Leaf Fully Emerged | 740 | Thu, Nov 13 2025 | 741 |
Latest 7-Day National Weather Service Forecast for 35.724°N -78.683 °E
| Date | Max Temp (°F) | Min Temp (°F) | Precip (in) | GDD | Stress Degree Days |
|---|---|---|---|---|---|
| Sat, Sep 20 2025 | 87.0 | 63.9 | 0 | 25 | 1.0 |
| Sun, Sep 21 2025 | 83.0 | 63.0 | 0 | 23 | 0.0 |
| Mon, Sep 22 2025 | 83.9 | 62.0 | 0 | 23 | 0.0 |
| 3 Day Totals | 87.03 DayMaximum | 62.03 DayMinimum | 03 DayAccumulation | 713 DayAccumulation | 13 DayAccumulation |
Longer-Term Climate Outlooks from NWS Climate Prediction Center
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Data Sources
Past Data Sources
- Past data from PRISM: Daily Temperature and Precipitation Gridded Product [Learn more about PRISM]
- Recent data from RTMA: National Weather Service's Real-Time Mesoscale Analysis (aggregated to daily) [Learn more about RTMA]
- Forecast data from NDFD: National Digital Forecast Database [Learn more about NDFD]
- Historical data calculated from PRISM: PRISM Daily Data averaged over past 10 years [Learn more about PRISM]
- Forecast data from NWS: National Weather Service [Learn more about NWS]
- Climate Outlooks from CPC: NWS Climate Prediction Center [Learn more about CPC]