The US Southwest cotton belt is undergoing a test of "rain-heat interweaving." According to weather forecasts, West Texas will see localized showers from July 7 to 11, with temperatures near or above normal. In the subsequent 6-to-10-day outlook, showers persist but temperatures climb further, with some periods significantly above normal. What does this pattern of simultaneous rain and heat mean for cotton plants in a critical growth stage?
Weather Pattern Divergence
West Texas is one of the largest cotton-producing regions in the US, and its weather directly impacts global supply expectations. Current forecasts show that intermittent showers help alleviate soil moisture deficits, generally benefiting cotton growth. However, persistently high temperatures—especially from Monday to Wednesday—may accelerate soil evaporation, causing water stress in cotton plants, potentially affecting boll set and lint quality.
In contrast, the US Delta and Southeast regions are also receiving additional showers. These areas already had better soil moisture, and the rains further consolidate the foundation for cotton growth. The California cotton region remains mostly dry, with similarly high temperatures, but dry conditions favor subsequent maturation and harvesting operations.
Global Cotton Belt Linkage
In the Southern Hemisphere, Brazil's second-crop cotton region is experiencing dry weather, providing an ideal window for ongoing harvesting. Brazil's second-crop accounts for the vast majority of its national output, and dry weather means harvest progress can accelerate, potentially increasing supply pressure on international markets in the short term.
From a global perspective, the "rain-heat interweaving" in the US cotton belt contrasts sharply with Brazil's dry harvest window. This regional weather divergence suggests that global cotton output distribution in the 2026/27 season may be more uneven—US yields face potential downside risk, while Brazilian supply is poised for smooth release.
Supply Chain Impact and Expectations
For spinners and fabric manufacturers, weather disruptions in the US cotton belt directly affect raw material procurement costs. If high temperatures cause yield declines in West Texas, US cotton spot and futures prices will rise; however, smooth harvesting in Brazil may partially offset those gains.
The ICE cotton futures market has already priced in some weather factors, but the actual impact depends on whether West Texas experiences persistent high temperatures and drought over the next two weeks. If heat persists without effective rainfall, market expectations for lower US cotton output will accelerate.