Roll, Arizona Cotton Heat Stress for 2025 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 66.3 ns 122 May 2 65.7 ns 123 May 3 67.5 ns 124 May 4 63.2 ns 125 May 5 61.5 ns 126 May 6 65.9 ns 127 May 7 64.8 ns 128 May 8 67.9 ns 129 May 9 73.6 ns 130 May 10 72.8 ns 131 May 11 74.9 ns 132 May 12 72.9 ns 133 May 13 64.5 ns 134 May 14 63.3 ns 135 May 15 65.2 ns 136 May 16 67.4 ns 137 May 17 66.4 ns 138 May 18 65.6 ns 139 May 19 69.2 ns 140 May 20 69.4 ns 141 May 21 71.7 ns 142 May 22 73.2 ns 143 May 23 73.0 ns 144 May 24 71.0 ns 145 May 25 70.2 ns 146 May 26 70.7 ns 147 May 27 71.3 ns 148 May 28 70.8 ns 149 May 29 70.3 ns 150 May 30 71.7 ns 151 May 31 76.1 ns 152 Jun 1 73.2 ns 153 Jun 2 73.9 ns 154 Jun 3 76.2 ns 155 Jun 4 75.1 ns 156 Jun 5 75.6 ns 157 Jun 6 74.0 ns 158 Jun 7 72.3 ns 159 Jun 8 74.6 ns 160 Jun 9 76.9 ns 161 Jun 10 76.7 ns 162 Jun 11 77.3 ns 163 Jun 12 75.7 ns 164 Jun 13 76.1 ns 165 Jun 14 75.9 ns 166 Jun 15 78.8 ns 167 Jun 16 78.6 ns 168 Jun 17 78.6 ns 169 Jun 18 79.2 ns 170 Jun 19 77.6 ns 171 Jun 20 78.0 ns 172 Jun 21 77.7 ns 173 Jun 22 75.8 ns 174 Jun 23 74.6 ns 175 Jun 24 72.4 ns 176 Jun 25 75.0 ns 177 Jun 26 76.7 ns 178 Jun 27 79.7 ns 179 Jun 28 82.3 ns 180 Jun 29 83.3 L1 181 Jun 30 84.6 L1 182 Jul 1 84.8 L1 183 Jul 2 84.7 L1 184 Jul 3 82.2 ns 185 Jul 4 83.9 L1 186 Jul 5 83.1 L1 187 Jul 6 84.4 L1 188 Jul 7 84.9 L1 189 Jul 8 85.4 L1 190 Jul 9 87.2 L2 191 Jul 10 87.1 L2 192 Jul 11 86.3 L2 193 Jul 12 83.7 L1 194 Jul 13 82.1 ns 195 Jul 14 83.8 L1 196 Jul 15 85.3 L1 197 Jul 16 84.6 L1 198 Jul 17 84.4 L1 199 Jul 18 82.6 L1 200 Jul 19 81.1 ns 201 Jul 20 81.6 ns 202 Jul 21 80.5 ns 203 Jul 22 80.5 ns 204 Jul 23 77.0 ns 205 Jul 24 79.2 ns 206 Jul 25 77.4 ns 207 Jul 26 78.1 ns 208 Jul 27 79.2 ns 209 Jul 28 80.0 ns 210 Jul 29 83.2 L1 211 Jul 30 82.7 L1 212 Jul 31 84.5 L1 213 Aug 1 83.6 L1 214 Aug 2 80.6 ns 215 Aug 3 81.5 ns 216 Aug 4 82.6 L1 217 Aug 5 83.1 L1 218 Aug 6 85.9 L1 219 Aug 7 85.5 L1 220 Aug 8 87.5 L2 221 Aug 9 86.8 L2 222 Aug 10 87.2 L2 223 Aug 11 87.0 L2 224 Aug 12 86.5 L2 225 Aug 13 85.4 L1 226 Aug 14 86.4 L2 227 Aug 15 85.7 L1 228 Aug 16 82.7 L1 229 Aug 17 80.3 ns 230 Aug 18 79.8 ns 231 Aug 19 84.3 L1 232 Aug 20 85.2 L1 233 Aug 21 88.4 L2 234 Aug 22 90.3 L2 235 Aug 23 89.7 L2 236 Aug 24 88.8 L2 237 Aug 25 80.7 ns 238 Aug 26 80.8 ns 239 Aug 27 83.7 L1 240 Aug 28 84.4 L1 241 Aug 29 83.1 L1 242 Aug 30 84.0 L1 243 Aug 31 83.8 L1 244 Sep 1 86.5 L2 245 Sep 2 83.8 L1 246 Sep 3 83.8 L1 247 Sep 4 81.8 ns 248 Sep 5 81.5 ns 249 Sep 6 84.3 L1 250 Sep 7 86.0 L1 251 Sep 8 85.9 L1 252 Sep 9 81.5 ns 253 Sep 10 78.6 ns 254 Sep 11 77.5 ns 255 Sep 12 75.5 ns 256 Sep 13 74.7 ns 257 Sep 14 75.7 ns 258 Sep 15 76.5 ns 259 Sep 16 82.7 L1 260 Sep 17 83.5 L1 261 Sep 18 81.9 ns 262 Sep 19 82.1 ns 263 Sep 20 83.6 L1 264 Sep 21 82.0 ns 265 Sep 22 80.7 ns 266 Sep 23 82.5 L1 267 Sep 24 84.3 L1 268 Sep 25 83.2 L1 269 Sep 26 75.2 ns 270 Sep 27 70.8 ns 271 Sep 28 74.3 ns 272 Sep 29 76.2 ns 273 Sep 30 76.6 ns 274 Oct 1 75.4 ns 275 Oct 2 75.7 ns 276 Oct 3 74.0 ns 277 Oct 4 67.8 ns 278 Oct 5 66.8 ns 279 Oct 6 67.5 ns 280 Oct 7 68.6 ns 281 Oct 8 71.9 ns 282 Oct 9 77.7 ns 283 Oct 10 76.0 ns 284 Oct 11 75.5 ns 285 Oct 12 76.8 ns 286 Oct 13 72.9 ns 287 Oct 14 65.6 ns 288 Oct 15 62.6 ns 289 Oct 16 60.6 ns 290 Oct 17 61.6 ns 291 Oct 18 63.0 ns 292 Oct 19 63.6 ns 293 Oct 20 63.8 ns 294 Oct 21 65.0 ns 295 Oct 22 68.5 ns 296 Oct 23 65.5 ns 297 Oct 24 65.7 ns 298 Oct 25 64.7 ns 299 Oct 26 65.3 ns 300 Oct 27 64.9 ns 301 Oct 28 65.0 ns 302 Oct 29 63.7 ns 303 Oct 30 63.0 ns 304 Oct 31 62.0 ns 305 Nov 1 61.9 ns 306 Nov 2 60.6 ns 307 Nov 3 61.6 ns 308 Nov 4 60.8 ns 309 Nov 5 60.1 ns 310 Nov 6 59.6 ns 311 Nov 7 60.2 ns 312 Nov 8 60.1 ns 313 Nov 9 61.1 ns 314 Nov 10 61.8 ns 315 Nov 11 60.0 ns 316 Nov 12 59.8 ns 317 Nov 13 61.1 ns 318 Nov 14 60.4 ns 319 Nov 15 62.5 ns 320 Nov 16 58.5 ns 321 Nov 17 55.9 ns 322 Nov 18 58.7 ns 323 Nov 19 55.4 ns 324 Nov 20 52.6 ns 325 Nov 21 51.2 ns 326 Nov 22 51.5 ns 327 Nov 23 53.0 ns 328 Nov 24 53.7 ns 329 Nov 25 53.9 ns 330 Nov 26 53.5 ns 331 Nov 27 53.6 ns 332 Nov 28 53.1 ns 333 Nov 29 52.5 ns 334 Nov 30 52.0 ns 335 Dec 1 51.9 ns 336 Dec 2 46.9 ns 337 Dec 3 48.0 ns 338 Dec 4 46.0 ns 339 Dec 5 44.3 ns 340 Dec 6 45.7 ns 341 Dec 7 48.4 ns 342 Dec 8 50.2 ns 343 Dec 9 49.8 ns