Yuma South, Arizona Cotton Heat Stress for 2026 DOY = Day of year ns = No Stress : Stress Value less than 82.4 L1 = Stress Level 1 : Stress Value from 82.4 to 86 L2 = Stress Level 2 : Stress Value greater than 86 DOY Date Stress --- ------ --------- 121 May 1 69.0 ns 122 May 2 69.8 ns 123 May 3 70.6 ns 124 May 4 63.2 ns 125 May 5 59.9 ns 126 May 6 62.1 ns 127 May 7 68.5 ns 128 May 8 73.4 ns 129 May 9 73.3 ns 130 May 10 74.5 ns 131 May 11 76.3 ns 132 May 12 76.9 ns 133 May 13 73.2 ns 134 May 14 72.1 ns 135 May 15 73.1 ns 136 May 16 71.8 ns 137 May 17 68.7 ns 138 May 18 65.9 ns 139 May 19 67.4 ns 140 May 20 67.8 ns 141 May 21 72.4 ns 142 May 22 71.8 ns 143 May 23 71.7 ns 144 May 24 72.1 ns 145 May 25 73.8 ns 146 May 26 72.3 ns 147 May 27 66.4 ns 148 May 28 65.4 ns 149 May 29 66.3 ns 150 May 30 70.2 ns 151 May 31 74.5 ns 152 Jun 1 76.5 ns 153 Jun 2 74.8 ns 154 Jun 3 73.6 ns 155 Jun 4 76.4 ns 156 Jun 5 77.6 ns 157 Jun 6 78.2 ns 158 Jun 7 78.0 ns 159 Jun 8 76.5 ns 160 Jun 9 76.3 ns 161 Jun 10 77.2 ns 162 Jun 11 79.9 ns 163 Jun 12 82.4 L1 164 Jun 13 85.0 L1 165 Jun 14 84.8 L1 166 Jun 15 84.1 L1 167 Jun 16 85.0 L1 168 Jun 17 83.3 L1 169 Jun 18 79.0 ns 170 Jun 19 78.0 ns 171 Jun 20 75.6 ns 172 Jun 21 77.7 ns 173 Jun 22 78.5 ns 174 Jun 23 81.4 ns 175 Jun 24 84.2 L1 176 Jun 25 83.0 L1 177 Jun 26 79.7 ns 178 Jun 27 77.5 ns 179 Jun 28 75.5 ns 180 Jun 29 74.1 ns 181 Jun 30 74.3 ns 182 Jul 1 77.0 ns 183 Jul 2 79.2 ns 184 Jul 3 79.6 ns 185 Jul 4 81.2 ns 186 Jul 5 83.8 L1 187 Jul 6 83.9 L1 188 Jul 7 85.6 L1