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 |
|---|---|---|---|---|---|---|
| Jan 13 | Jan 14 | Jan 15 | Jan 16 | Jan 17 | Jan 18 | Jan 19 |
| Jan 20 1 Potential Freeze In Next 5 Days | Jan 21 2 Potential Freeze In Next 5 Days | Jan 22 4 | Jan 23 5 | Jan 24 5 | Jan 25 4 | Jan 26 3 |
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 | Mon, Jan 20 2025 | 0 | |
| Today | Mon, Jan 20 2025 | 1 | ||
| V2 | Two Leaves Fully Emerged | 200 | Thu, Mar 27 2025 | 204 |
| V4 | Four Leaves Fully Emerged | 345 | Sat, Apr 12 2025 | 346 |
| V6 | Six Leaves Fully Emerged | 475 | Wed, Apr 23 2025 | 479 |
| V8 | Eight Leaves Fully Emerged | 610 | Sat, May 3 2025 | 620 |
| V10 | Tenth Leaf Fully Emerged | 740 | Sun, May 11 2025 | 753 |
| V12 | Twelfth Leaf Fully Emerged | 870 | Sun, May 18 2025 | 878 |
| V14 | Fourteenth Leaf Fully Emerged | 1,000 | Sat, May 24 2025 | 1,003 |
| V16 | Sixteenth Leaf Fully Emerged | 1,135 | Fri, May 30 2025 | 1,142 |
| VT to R1 | Silks Emerging | 1,400 | Tue, Jun 10 2025 | 1,406 |
| R2 | Blister Stage | 1,660 | Fri, Jun 20 2025 | 1,670 |
| R4 | Dough Stage | 1,925 | Mon, Jun 30 2025 | 1,950 |
| R5 | Dent Stage | 2,190 | Tue, Jul 8 2025 | 2,192 |
| R6 | Black Layer | 2,450 | Thu, Jul 17 2025 | 2,462 |
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 |
|---|---|---|---|---|---|
| Mon, Jan 20 2025 | 33.0 | 13.0 | 0 | 0 | 0.0 |
| Tue, Jan 21 2025 | 31.9 | 18.9 | 0 | 0 | 0.0 |
| Wed, Jan 22 2025 | 33.0 | N/A | 0.01 | N/A | 0.0 |
| 3 Day Totals | 33.03 DayMaximum | 13.03 DayMinimum | 0.013 DayAccumulation | 03 DayAccumulation | 03 DayAccumulation |
Longer-Term Climate Outlooks from NWS Climate Prediction Center
| Period | Temperature Outlook (Probability) | Precipitation Outlook (Probability) |
|---|---|---|
| 6-10 days Sat, Jan 25 - Wed, Jan 29 | Normal36% probability of Normal temperatures over the next 6-10 days | Equal ChancesEqual chance of above, below, or normal precipitation over the next 6-10 days |
| 8-14 days Mon, Jan 27 - Sun, Feb 2 | Normal36% probability of Normal temperatures over the next 8-14 days | Equal ChancesEqual chance of above, below, or normal precipitation over the next 8-14 days |
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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]