Yuma Valley, 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 69.4 ns 122 May 2 71.6 ns 123 May 3 71.5 ns 124 May 4 64.7 ns 125 May 5 63.4 ns 126 May 6 64.8 ns 127 May 7 70.1 ns 128 May 8 74.0 ns 129 May 9 74.7 ns 130 May 10 75.7 ns 131 May 11 77.1 ns 132 May 12 75.9 ns 133 May 13 74.8 ns 134 May 14 75.0 ns 135 May 15 73.0 ns 136 May 16 72.3 ns 137 May 17 69.9 ns 138 May 18 68.6 ns 139 May 19 69.6 ns 140 May 20 69.6 ns 141 May 21 71.3 ns 142 May 22 71.5 ns 143 May 23 71.8 ns 144 May 24 72.3 ns 145 May 25 74.1 ns 146 May 26 71.5 ns 147 May 27 67.0 ns 148 May 28 66.2 ns 149 May 29 67.6 ns 150 May 30 72.5 ns 151 May 31 73.9 ns 152 Jun 1 76.3 ns 153 Jun 2 74.6 ns 154 Jun 3 74.5 ns 155 Jun 4 76.3 ns 156 Jun 5 77.1 ns 157 Jun 6 77.2 ns 158 Jun 7 76.0 ns 159 Jun 8 75.5 ns 160 Jun 9 76.2 ns 161 Jun 10 77.3 ns 162 Jun 11 78.8 ns 163 Jun 12 81.5 ns 164 Jun 13 83.7 L1 165 Jun 14 84.1 L1 166 Jun 15 83.2 L1 167 Jun 16 85.4 L1 168 Jun 17 83.3 L1 169 Jun 18 79.4 ns 170 Jun 19 78.4 ns 171 Jun 20 75.3 ns 172 Jun 21 76.4 ns 173 Jun 22 78.2 ns 174 Jun 23 81.3 ns 175 Jun 24 84.2 L1 176 Jun 25 84.2 L1 177 Jun 26 81.9 ns 178 Jun 27 79.2 ns 179 Jun 28 76.1 ns 180 Jun 29 75.4 ns 181 Jun 30 75.2 ns 182 Jul 1 76.2 ns 183 Jul 2 78.7 ns 184 Jul 3 79.2 ns 185 Jul 4 79.6 ns 186 Jul 5 84.7 L1 187 Jul 6 83.7 L1 188 Jul 7 85.1 L1