How much water should you drink in 35 degree heat for optimal hydration?
                                
                                
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                                    4 min read                                
                            
                                The Centers for Disease Control and Prevention (CDC) advises drinking one cup (8 ounces) of water every 15–20 minutes when working in extreme heat to prevent heat-related illness. Determining exactly how much water should you drink in 35 degree heat, however, depends on various factors, including your activity level and individual health.