Basically, the farmers want to know as much as they can about what the weather will be so that they can try to make good decisions about planting and harvesting.

Weather is very important in agriculture. Changes in the weather greatly affect crops (how they grow, their amount, their state).

In poor countries where irrigation is not available, farmers depend on the weather (rain) in order to provide water for agriculture. The weather is with no doubt the most important factor determining whether their agricultural enterprise is successful or not. However weather also affects countries which have irrigation, because there is still some correlation of yield amount and weather conditions. There are studies that suggest that climate variability and climate change can have adverse impacts on global food production and food security. The fluctuations on the weather can be a consequence of climate variability and climate change.