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Livestock producers across rural America are facing growing challenges due to the increasing frequency of severe heat and cold events. In states like North Dakota, prolonged cold periods and wind chills place significant stress on cattle, threatening their health and survival. Meanwhile, in southern states such as Texas, extended episodes of high daytime and nighttime temperatures push the Temperature-Humidity Index (THI) beyond safe levels, leading to heat stress, reduced productivity, and avoidable livestock losses. These challenges have considerable economic impacts; for instance, winter cold events in the Northern Plains resulted in over $20 million in cattle losses in 2023 alone, while heat stress nationwide causes an estimated $370 million in annual losses to feedlot operations.
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As the frequency of severe heat and cold events increases, livestock producers across rural America are facing growing challenges. In states like North Dakota, prolonged cold periods and wind chills place significant stress on cattle, threatening their [health and survival](https://sentientmedia.org/farmers-face-frostbitten-cows-dead-calves-and-harsh-financial-consequences/). Meanwhile, in southern states such as Texas, extended episodes of high daytime and nighttime temperatures push the Temperature-Humidity Index (THI) beyond safe levels, leading to heat stress, reduced productivity, and avoidable livestock losses. These challenges have considerable [economic impacts](https://www.ncei.noaa.gov/access/billions/events): for instance, winter cold events in the Northern Plains resulted in over $20 million in cattle losses in 2023 alone, while heat stress nationwide causes an estimated $370 million in annual losses to feedlot operations.
The severity of these events became evident in June 2022, when an intense heat wave swept across Kansas, killing thousands of cattle within days. The Kansas Department of Health and Environment confirmed at least 2,000 cattle deaths, though industry estimates suggest the toll could have reached as high as 10,000 head during that single event. Temperatures soared above 100°F with high humidity and little nighttime cooling, creating lethal conditions for the herds. This mass die-off raised urgent questions about the future of America’s $80 billion cattle industry, even in areas once considered less vulnerable. From the ongoing heat stress in southern states to rising cases of cold stress and hypothermia during harsh winters in states such as Montana and North Dakota, cattle producers nationwide are navigating evolving challenges. These severe weather events impact both animal welfare and national food security, demanding urgent attention and adaptive solutions across the country.
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The severity of these events became evident in June 2022, when an intense heat wave swept across Kansas, killing thousands of cattle within days. The Kansas Department of Health and Environment confirmed at least 2,000 [cattle deaths](https://www.npr.org/2022/06/16/1105482394/cattle-kansas-heat-wave), though industry estimates suggest the toll could have reached as high as 10,000 head during that single event. Temperatures soared above 100°F with high humidity and little nighttime cooling, creating lethal conditions for the herds. This mass die-off raised urgent questions about the future of America’s $80 billion cattle industry, even in areas once considered less vulnerable. From the ongoing heat stress in southern states to rising cases of [cold stress](https://extension.sdstate.edu/sites/default/files/2021-05/S-0013-08.pdf) and hypothermia during harsh winters in states such as Montana and North Dakota, severe weather events impact both animal welfare and national food security, demanding urgent attention and adaptive solutions.
When weather events such as heatwaves or blizzards occur, human health often takes center stage in the headlines. However, livestock, particularly cattle, face serious consequences from severe temperatures that significantly impact their energy needs and overall well-being. In cold stress conditions, like the harsh winters experienced in states such as North Dakota, cattle must increase their maintenance energy to generate enough body heat to survive temperatures below their lower critical threshold. Conversely, during hot summers in states like Texas and Oklahoma, cattle suffer heat stress when temperatures exceed their upper critical threshold. To understand how heat affects them, we use something called the Temperature Humidity Index (THI), which is similar to the heat index people use to measure how hot it feels.
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When weather events such as heat waves or blizzards occur, human health often takes center stage in the headlines. However, livestock, particularly cattle, face serious consequences from severe temperatures that significantly impact their energy needs and overall well-being. In cold stress conditions, like the harsh winters experienced in North Dakota, cattle must increase their maintenance energy to generate enough body heat to survive temperatures below their lower critical threshold. Conversely, during hot summers in states like Texas and Oklahoma, cattle suffer heat stress when temperatures exceed their upper critical threshold. To understand how heat affects them, we use the THI, which is similar to the heat index people use to measure how hot it feels (versus the actual temperature).
Cattle operate within a narrow comfort zone called the thermoneutral zone. Cattle operate within a narrow comfort range known as the thermoneutral zone, where energy needs for maintenance are minimal. In our analysis, we use critical THI thresholds of 75, 82, and 94, representing escalating levels of heat stress (Lee et al., 2025). Think of these as warning levels:
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Cattle operate within a narrow comfort range known as the thermoneutral zone, where energy needs for maintenance are minimal. In our analysis, we use critical THI thresholds of 75, 82, and 94, representing escalating levels of heat stress (Lee et al., 2025). Think of these as warning levels:
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<ul>
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<li><strong>THI 75:</strong> Cattle begin showing mild stress signs</li>
<li><strong>THI 94:</strong> Cattle face life-threatening conditions</li>
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Each episode of temperature stress diverts energy away from vital production functions including growth, reproduction, and milk yield. Repeated heat or cold stress events compound these effects, triggering cascading economic losses that ultimately impact consumers through higher [food prices](https://www.agriculture.com/partners-beef-prices-soar-to-record-highs-in-june-11775697).
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Each episode of temperature stress forces cattle to use energy for survival responses (e.g., cooling themselves) instead of channeling it into vital production functions like growth, reproduction, and milk yield. Repeated heat or cold stress events compound these effects, triggering cascading economic losses that ultimately impact consumers through higher [food prices](https://www.agriculture.com/partners-beef-prices-soar-to-record-highs-in-june-11775697).
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<ul>
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<li><strong>Lack of Acclimation:</strong> The Northern Plains and Midwest experience large fluctuations in temperatures, leading to unstable thermal conditions that can increase pressure on livestock and complicate herd management.</li>
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<li><strong>Lower Minimum Temperatures:</strong> When temperatures fall below cattle’s lower critical temperature, they must expend more energy to maintain body heat. Wind chill often makes conditions feel even colder, intensifying cold stress risks.</li>
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<li><strong>Blizzard Count and Vulnerability:</strong> Blizzard frequency data confirms that the Dakota have experienced over 100 blizzards since 1950, with many counties averaging one or more blizzards annually. This high blizzard count in the Dakotas significantly increases cold stress challenges for livestock and adds operational risks for producers in these regions.</li>
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<li><strong>Blizzard Count and Vulnerability:</strong> Blizzard frequency data confirm that the Dakotas have experienced over 100 blizzards since 1950, with many counties averaging one or more blizzards annually. This high blizzard count in the Dakotas significantly increases cold stress challenges for livestock and adds operational risks for producers in these regions.</li>
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While temperature is the primary driver of heat stress in cattle, other climate variables such as vapor pressure deficit, precipitation, and soil moisture also play critical roles. It is not just the average levels of these factors, but their variability that has a greater impact.
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While temperature is the primary driver of heat stress in cattle, other climate variables such as vapor pressure deficit, precipitation, and soil moisture also play critical roles. More than their average levels, it is the variability of these factors that has the greater impact.
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### The Role of Drought and Soil Moisture
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Soil moisture emerges as a critical but often overlooked factor. When soil moisture is depleted, the land loses its capacity to buffer temperature extremes, creating a feedback loop that makes cattle more vulnerable to combined heat and water scarcity. During the 2022 Kansas heat wave, [SMAP](https://smap.jpl.nasa.gov/) soil moisture data showed severely depleted conditions across the region, amplifying the heat stress effects on cattle. This combination of drought and heat creates the perfect conditions for mass mortality events.
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Soil moisture emerges as a critical but often overlooked factor. When soil moisture is depleted, the land loses its capacity to buffer temperature extremes, creating a feedback loop that makes cattle more vulnerable to combined heat and water scarcity. During the 2022 Kansas heat wave, soil moisture data collected by NASA’s Soil Moisture Active Passive (SMAP) mission showed severely depleted conditions across the region, amplifying the heat stress effects on cattle. This combination of drought and heat creates the perfect conditions for mass mortality events.
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<h3>Precipitation Patterns Matter More Than Totals</h3>
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In dry states like Nebraska, Oklahoma, and Kansas, it's not total precipitation but its variability that most strongly correlates with cattle mortality. High variability whether within a season or between years disrupts several key resources:
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In dry states like Nebraska, Oklahoma, and Kansas, it's not total precipitation but its variability that most strongly correlates with cattle mortality. High variability, whether within a season or between years, disrupts several key resources:
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<li><strong>Forage Growth:</strong> Unpredictable rainfall creates feast-or-famine conditions for pasture</li>
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<li><strong>Water Availability:</strong> Inconsistent precipitation affects water source reliability</li>
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<li><strong>Pasture Quality:</strong> Variable moisture creates uneven forage nutrition and availability</li>
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This variability makes it nearly impossible for cattle to maintain condition and for producers to plan resources effectively.
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This variability makes it nearly impossible for cattle to stay healthy and for producers to plan their resources effectively.
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style={{ width: '100%', height: 'auto' }}
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/>
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<Caption>
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Summer total precipitation anomaly for the continental U.S., calculated using the 1980–2010 base period.
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Summer total precipitation anomaly for the Contiguous United States (CONUS), calculated using the 1980-2010 base period.
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Normalized Difference Vegetation Index (NDVI) provides crucial insights into forage quality and vegetation stress. NDVI measures the "greenness" and health of plant cover, with low values signaling poor or stressed vegetation that directly impacts feed quality and availability for cattle. During heat events, declining NDVI indicates not just immediate stress but also reduced nutritional quality of available forage, compounding the challenges cattle face.
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Normalized Difference Vegetation Index (NDVI) provides crucial insights into forage quality and vegetation stress. NDVI measures the "greenness" and health of plant cover, with low values signaling poor or stressed vegetation, which directly impacts feed quality and availability for cattle. During heat events, declining NDVI indicates not just immediate stress but also reduced nutritional quality of available forage, compounding the challenges cattle face.
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layerId='usda_cattle_large_AFOs_2017'
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datetime='2017-01-01'
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>
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### Large Operations: Resources But Still Vulnerable
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### Large Operations: Resources, But Still Vulnerable
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Large AFOs are more likely to be located in regions with extensive grassland. These operations often confine or semi-confine their herds and generally have greater resources to invest in heat abatement technologies and advanced management. However, even large AFOs face significant obstacles during prolonged heat waves, as grassland systems are susceptible to drought and wildfires, impacting both feed supply and animal welfare.
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