San Simon, 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 59.2 ns 122 May 2 60.1 ns 123 May 3 63.5 ns 124 May 4 62.2 ns 125 May 5 59.9 ns 126 May 6 54.3 ns 127 May 7 58.5 ns 128 May 8 61.7 ns 129 May 9 64.4 ns 130 May 10 63.7 ns 131 May 11 69.0 ns 132 May 12 69.3 ns 133 May 13 69.0 ns 134 May 14 67.8 ns 135 May 15 65.9 ns 136 May 16 64.3 ns 137 May 17 65.3 ns 138 May 18 64.2 ns 139 May 19 64.2 ns 140 May 20 64.7 ns 141 May 21 64.7 ns 142 May 22 63.0 ns 143 May 23 64.2 ns 144 May 24 68.0 ns 145 May 25 67.4 ns 146 May 26 63.2 ns 147 May 27 62.0 ns 148 May 28 64.4 ns 149 May 29 65.5 ns 150 May 30 61.9 ns 151 May 31 63.1 ns 152 Jun 1 65.8 ns 153 Jun 2 67.2 ns 154 Jun 3 68.6 ns 155 Jun 4 70.5 ns 156 Jun 5 72.1 ns 157 Jun 6 69.6 ns 158 Jun 7 69.0 ns 159 Jun 8 68.2 ns 160 Jun 9 72.5 ns 161 Jun 10 71.0 ns 162 Jun 11 70.7 ns 163 Jun 12 71.8 ns 164 Jun 13 74.8 ns 165 Jun 14 76.5 ns 166 Jun 15 74.5 ns 167 Jun 16 75.6 ns 168 Jun 17 73.7 ns 169 Jun 18 72.5 ns 170 Jun 19 70.1 ns 171 Jun 20 71.4 ns 172 Jun 21 69.7 ns 173 Jun 22 70.8 ns 174 Jun 23 72.2 ns 175 Jun 24 76.2 ns 176 Jun 25 75.1 ns 177 Jun 26 74.8 ns 178 Jun 27 78.7 ns 179 Jun 28 77.1 ns 180 Jun 29 74.8 ns 181 Jun 30 74.6 ns 182 Jul 1 70.9 ns 183 Jul 2 66.5 ns 184 Jul 3 66.1 ns 185 Jul 4 69.6 ns 186 Jul 5 73.3 ns 187 Jul 6 76.7 ns 188 Jul 7 75.4 ns