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 |
|---|---|---|---|---|---|---|
| Mar 24 | Mar 25 27 | Mar 26 29 | Mar 27 34 | Mar 28 41 | Mar 29 41 | Mar 30 41 |
| Mar 31 41 | Apr 1 42 | Apr 2 41 | Apr 3 44 | Apr 4 37 | Apr 5 28 | Apr 6 20 |
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 | Tue, Mar 25 2025 | 7 | |
| Today | Tue, Mar 25 2025 | 7 | ||
| V2 | Two Leaves Fully Emerged | 200 | Tue, Apr 15 2025 | 200 |
| V4 | Four Leaves Fully Emerged | 345 | Mon, Apr 28 2025 | 351 |
| V6 | Six Leaves Fully Emerged | 475 | Tue, May 6 2025 | 487 |
| V8 | Eight Leaves Fully Emerged | 610 | Wed, May 14 2025 | 614 |
| V10 | Tenth Leaf Fully Emerged | 740 | Wed, May 21 2025 | 751 |
| V12 | Twelfth Leaf Fully Emerged | 870 | Tue, May 27 2025 | 882 |
| V14 | Fourteenth Leaf Fully Emerged | 1,000 | Mon, Jun 2 2025 | 1,023 |
| V16 | Sixteenth Leaf Fully Emerged | 1,135 | Sat, Jun 7 2025 | 1,146 |
| VT to R1 | Silks Emerging | 1,400 | Tue, Jun 17 2025 | 1,400 |
| R2 | Blister Stage | 1,660 | Fri, Jun 27 2025 | 1,678 |
| R4 | Dough Stage | 1,925 | Sun, Jul 6 2025 | 1,941 |
| R5 | Dent Stage | 2,190 | Tue, Jul 15 2025 | 2,212 |
| R6 | Black Layer | 2,450 | Wed, Jul 23 2025 | 2,459 |
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 |
|---|---|---|---|---|---|
| Tue, Mar 25 2025 | 70.1 | 42.0 | 0.07 | 6 | 0.0 |
| Wed, Mar 26 2025 | 63.9 | 43.1 | 0.12 | 4 | 0.0 |
| Thu, Mar 27 2025 | 65.0 | 38.9 | 0 | 2 | 0.0 |
| 3 Day Totals | 70.13 DayMaximum | 38.93 DayMinimum | 0.193 DayAccumulation | 123 DayAccumulation | 03 DayAccumulation |
Longer-Term Climate Outlooks from NWS Climate Prediction Center
| Period | Temperature Outlook (Probability) | Precipitation Outlook (Probability) |
|---|---|---|
| 6-10 days Sun, Mar 30 - Thu, Apr 3 | Above Normal60% probability of Above 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 Tue, Apr 1 - Mon, Apr 7 | Above Normal50% probability of Above 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]