Roll, 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 68.8 ns 122 May 2 71.0 ns 123 May 3 70.4 ns 124 May 4 64.3 ns 125 May 5 62.5 ns 126 May 6 62.9 ns 127 May 7 68.4 ns 128 May 8 72.2 ns 129 May 9 74.1 ns 130 May 10 74.6 ns 131 May 11 76.0 ns 132 May 12 74.4 ns 133 May 13 73.3 ns 134 May 14 72.6 ns 135 May 15 72.6 ns 136 May 16 71.5 ns 137 May 17 68.8 ns 138 May 18 68.4 ns 139 May 19 66.7 ns 140 May 20 66.8 ns 141 May 21 69.1 ns 142 May 22 69.7 ns 143 May 23 71.4 ns 144 May 24 71.1 ns 145 May 25 70.8 ns 146 May 26 71.0 ns 147 May 27 68.5 ns 148 May 28 67.4 ns 149 May 29 65.7 ns 150 May 30 69.4 ns 151 May 31 73.2 ns 152 Jun 1 74.9 ns 153 Jun 2 73.0 ns 154 Jun 3 73.0 ns 155 Jun 4 75.1 ns 156 Jun 5 75.8 ns 157 Jun 6 75.4 ns 158 Jun 7 75.7 ns 159 Jun 8 72.8 ns 160 Jun 9 72.9 ns 161 Jun 10 75.6 ns 162 Jun 11 79.4 ns 163 Jun 12 82.8 L1 164 Jun 13 83.7 L1 165 Jun 14 86.1 L2 166 Jun 15 85.5 L1 167 Jun 16 86.0 L1 168 Jun 17 84.0 L1 169 Jun 18 78.5 ns 170 Jun 19 77.0 ns 171 Jun 20 75.0 ns 172 Jun 21 76.7 ns 173 Jun 22 77.8 ns 174 Jun 23 82.2 ns 175 Jun 24 84.1 L1 176 Jun 25 83.9 L1 177 Jun 26 80.8 ns 178 Jun 27 77.5 ns 179 Jun 28 75.2 ns 180 Jun 29 73.4 ns 181 Jun 30 74.7 ns 182 Jul 1 75.3 ns 183 Jul 2 77.5 ns 184 Jul 3 77.5 ns 185 Jul 4 80.2 ns 186 Jul 5 83.2 L1 187 Jul 6 83.3 L1 188 Jul 7 85.5 L1