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Agronomic Crops Network

Ohio State University Extension


Weather Update

16 Day Ensemble Mean Total QPF

The headline the next 10 days for the middle third of August will be below normal temperatures, about 2-4 degree below normal. Rainfall is now in a more normal mode through much of August with more variability to the pattern. If anything like we talked about in July, the tendency will be on the slightly drier side of normal but nothing real extreme the next few weeks. In fact some of the lower rain totals the next 16 days will be in our region of the corn and soybean belt.

You can see the latest rainfall totals at the Ohio River Forecast Center Briefing Page at:

Week of August 8 outlook:

Temperatures will be below normal. Normal highs now are near or just above 80 with lows in the 60s. Rainfall will generally be at or below normal.

Temperatures - 2-4F below normal

Rainfall - normal to below normal. 0.25-1.00 inches.

Relative Humidity - daily average 70-80% below 80-85% fungus threshold except 80-85% Friday August 11

Week of August 14 outlook:
Temperatures - below normal 0 to 2F below normal
Rainfall - below normal - 0.25-0.75 inches
Relative Humidity - daily average 70-80% below 80-85% fungus threshold

Rest of August Outlook:

After August 20, temperatures will return to a few degrees above normal and rainfall close to normal. Therefore, August will likely end the month within a degree of normal either side and rainfall will be variable and end the month within an inch of normal most places.

Fall Harvest Outlook:

Confidence is high we will have above normal temperatures and delayed freeze risk this fall. Wetter than normal soil moisture will mean night time minimum temperatures will be held up some resulting in normal to 1 or 2 week delays in freezing temperatures. Confidence is low in the harvest rainfall outlook. It appears any drying from August into September could be replaced by wetness sometime in later September through November.

The latest two week rainfall forecast from the NOAA/NWS/Ohio River Forecast Center can be seen i the attached graphic. Generally 1-2 inches are forecast on average in Ohio the next 14-16 days which is normal to slightly below normal in most places. Isolated totals will be higher.

Crop Observation and Recommendation Network

C.O.R.N. Newsletter is a summary of crop observations, related information, and appropriate recommendations for Ohio crop producers and industry. C.O.R.N. Newsletter is produced by the Ohio State University Extension Agronomy Team, state specialists at The Ohio State University and the Ohio Agricultural Research and Development Center (OARDC). C.O.R.N. Newsletter questions are directed to Extension and OARDC state specialists and associates at Ohio State.