A large amount of information is available about the general influence of El Nino / La Nina on climate in the United States. Much of this information is in the form of monthly or seasonal composites of past events. While of general interest in planning for the present La Nina, these monthly or seasonal data are too coarse to estimate potential impacts on farming during critical periods of the annual cycle. Some of these concerns include the timing of the last spring frost and first fall frost, field conditions during planting or harvesting, and soil moisture conditions during important phenological stages for particular types of crops. For this reason, the preparation of high resolution composites of past La Nina events using pentad (5-day) calendar periods would be very useful in pinpointing the potential types of problems that may be faced by agriculture during the present La Nina. Results to date indicate the existence of spatially and temporally coherent signals in both temperature and precipitation composites in the region. The well known summer drought in Year +1 involves much of the Midwest, but the timing and intensity vary across the region. The importance of these types of climate variations to agricultural in the Midwest will also be presented