A sudden drought is often viewed as a mere force of nature, but a highly selective withholding of rain serves as a precise, educational intervention. God orchestrates this lack of water not as a random climatic event, but as a calculated measure designed to shatter public complacency and awaken the people to repentance. The resulting uncertainty, confusion, and deep distress are meant to firmly capture their attention.
The timing of this drought is planned with devastating exactness, striking exactly three months before the harvest. This is the absolute peak of the rainy season, the moment when the land relies on water the most [אבן עזרא, רד״ק, ביאור שטיינזלץ]. The late timing makes the blow particularly severe. Had the rains stopped at the very beginning of the year, farmers would have simply refrained from planting and could have survived by eating the seeds they held in storage. Because the rain ceases so late in the season, they suffer a total loss, losing both their future crops and the seeds they have already buried in the earth [מלבי״ם, אברבנאל]. This critical timing is intended to instill a profound fear of approaching starvation, urging the people to return to God before it is too late [אבן עזרא].
To eliminate any possibility that the people might dismiss the drought as a normal occurrence, the rainfall is distributed in a highly selective and visible manner. Rain falls on one city while a neighboring city is left completely dry. This stark contrast serves as an undeniable sign of divine providence. By witnessing such an unnatural division, the people are forced to acknowledge that the drought is a direct punishment from God rather than a coincidence of natural law [מצודת דוד, מלבי״ם, רד״ק, אברבנאל]. This lack of uniformity plunges the population into a state of instability and deep insecurity [ביאור שטיינזלץ].
The divine precision extends even further, reaching the level of individual fields and valleys [רש״י, מצודת ציון]. Even within a city that receives rain, one specific plot of land will be watered while the plot directly adjacent to it remains completely parched. This extreme exactness is understood by some to reflect the spiritual standing of the individual landowners, with rain falling only as a merit for those who have few sins or who have sincerely repented [מלבי״ם, אברבנאל]. The rainfall is measured so tightly, and restricted so entirely to the designated plot, that no excess water remains to be channeled over to save the dry, dying field next door [מצודת דוד, מלבי״ם].
However, an alternative perspective views this selective watering not as a targeted blessing, but as a twofold curse. In this approach, the dry field naturally withers from the lack of moisture, while the field that actually receives rain is flooded with such an overwhelming amount of water that its crops completely rot [רש״י].