Yuma N. Gila, 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 70.4 ns 122 May 2 72.6 ns 123 May 3 71.9 ns 124 May 4 64.8 ns 125 May 5 62.9 ns 126 May 6 63.9 ns 127 May 7 70.4 ns 128 May 8 74.1 ns 129 May 9 74.8 ns 130 May 10 75.9 ns 131 May 11 77.9 ns 132 May 12 75.8 ns 133 May 13 74.2 ns 134 May 14 73.4 ns 135 May 15 73.2 ns 136 May 16 72.9 ns 137 May 17 69.0 ns 138 May 18 67.0 ns 139 May 19 67.9 ns 140 May 20 68.3 ns 141 May 21 70.7 ns 142 May 22 71.3 ns 143 May 23 71.4 ns 144 May 24 72.1 ns 145 May 25 72.8 ns 146 May 26 71.5 ns 147 May 27 66.3 ns 148 May 28 65.4 ns 149 May 29 65.5 ns 150 May 30 70.0 ns 151 May 31 74.4 ns 152 Jun 1 75.3 ns 153 Jun 2 74.2 ns 154 Jun 3 74.2 ns 155 Jun 4 75.2 ns 156 Jun 5 76.0 ns 157 Jun 6 75.5 ns 158 Jun 7 75.8 ns 159 Jun 8 73.3 ns 160 Jun 9 74.5 ns 161 Jun 10 76.5 ns 162 Jun 11 78.0 ns 163 Jun 12 80.7 ns 164 Jun 13 82.5 L1 165 Jun 14 83.8 L1 166 Jun 15 82.9 L1 167 Jun 16 84.0 L1 168 Jun 17 82.6 L1 169 Jun 18 78.0 ns 170 Jun 19 76.8 ns 171 Jun 20 74.6 ns 172 Jun 21 75.8 ns 173 Jun 22 77.0 ns 174 Jun 23 79.7 ns 175 Jun 24 82.9 L1 176 Jun 25 82.1 ns 177 Jun 26 79.3 ns 178 Jun 27 76.1 ns 179 Jun 28 73.9 ns 180 Jun 29 72.7 ns 181 Jun 30 72.1 ns 182 Jul 1 75.2 ns 183 Jul 2 77.9 ns 184 Jul 3 77.7 ns 185 Jul 4 78.7 ns 186 Jul 5 82.2 ns 187 Jul 6 82.2 ns 188 Jul 7 83.3 L1