Payson, 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 55.5 ns 122 May 2 57.5 ns 123 May 3 59.8 ns 124 May 4 55.8 ns 125 May 5 49.0 ns 126 May 6 49.7 ns 127 May 7 56.6 ns 128 May 8 59.2 ns 129 May 9 61.6 ns 130 May 10 64.6 ns 131 May 11 63.4 ns 132 May 12 65.1 ns 133 May 13 62.5 ns 134 May 14 59.5 ns 135 May 15 59.7 ns 136 May 16 60.0 ns 137 May 17 59.4 ns 138 May 18 55.3 ns 139 May 19 54.7 ns 140 May 20 55.8 ns 141 May 21 56.1 ns 142 May 22 57.7 ns 143 May 23 59.2 ns 144 May 24 62.0 ns 145 May 25 58.5 ns 146 May 26 58.4 ns 147 May 27 59.4 ns 148 May 28 59.2 ns 149 May 29 54.9 ns 150 May 30 55.6 ns 151 May 31 59.4 ns 152 Jun 1 61.3 ns 153 Jun 2 65.5 ns 154 Jun 3 67.0 ns 155 Jun 4 67.3 ns 156 Jun 5 67.8 ns 157 Jun 6 65.8 ns 158 Jun 7 65.0 ns 159 Jun 8 63.1 ns 160 Jun 9 63.5 ns 161 Jun 10 63.9 ns 162 Jun 11 66.9 ns 163 Jun 12 69.0 ns 164 Jun 13 71.7 ns 165 Jun 14 69.3 ns 166 Jun 15 68.4 ns 167 Jun 16 68.6 ns 168 Jun 17 70.1 ns 169 Jun 18 70.2 ns 170 Jun 19 67.2 ns 171 Jun 20 64.8 ns 172 Jun 21 64.3 ns 173 Jun 22 65.9 ns 174 Jun 23 71.2 ns 175 Jun 24 72.7 ns 176 Jun 25 72.9 ns 177 Jun 26 71.9 ns 178 Jun 27 70.0 ns 179 Jun 28 68.7 ns 180 Jun 29 63.8 ns 181 Jun 30 63.1 ns 182 Jul 1 60.0 ns 183 Jul 2 61.8 ns 184 Jul 3 64.9 ns 185 Jul 4 69.0 ns 186 Jul 5 71.2 ns 187 Jul 6 71.4 ns 188 Jul 7 73.1 ns