Payson, 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 53.6 ns 122 May 2 55.0 ns 123 May 3 55.6 ns 124 May 4 48.1 ns 125 May 5 44.4 ns 126 May 6 46.1 ns 127 May 7 50.0 ns 128 May 8 56.4 ns 129 May 9 60.9 ns 130 May 10 62.6 ns 131 May 11 61.9 ns 132 May 12 61.8 ns 133 May 13 59.3 ns 134 May 14 52.0 ns 135 May 15 51.9 ns 136 May 16 54.2 ns 137 May 17 55.6 ns 138 May 18 54.0 ns 139 May 19 54.9 ns 140 May 20 58.8 ns 141 May 21 60.3 ns 142 May 22 61.0 ns 143 May 23 60.9 ns 144 May 24 58.9 ns 145 May 25 57.6 ns 146 May 26 59.5 ns 147 May 27 60.6 ns 148 May 28 60.6 ns 149 May 29 63.4 ns 150 May 30 65.7 ns 151 May 31 66.0 ns 152 Jun 1 63.5 ns 153 Jun 2 59.8 ns 154 Jun 3 65.2 ns 155 Jun 4 62.4 ns 156 Jun 5 63.1 ns 157 Jun 6 64.1 ns 158 Jun 7 65.7 ns 159 Jun 8 66.9 ns 160 Jun 9 67.7 ns 161 Jun 10 67.9 ns 162 Jun 11 69.1 ns 163 Jun 12 67.9 ns 164 Jun 13 66.3 ns 165 Jun 14 67.4 ns 166 Jun 15 69.4 ns 167 Jun 16 69.1 ns 168 Jun 17 68.9 ns 169 Jun 18 68.7 ns 170 Jun 19 70.9 ns 171 Jun 20 68.8 ns 172 Jun 21 69.4 ns 173 Jun 22 64.9 ns 174 Jun 23 63.5 ns 175 Jun 24 63.7 ns 176 Jun 25 62.8 ns 177 Jun 26 65.0 ns 178 Jun 27 67.2 ns 179 Jun 28 69.0 ns 180 Jun 29 72.3 ns 181 Jun 30 73.3 ns 182 Jul 1 71.5 ns 183 Jul 2 68.4 ns 184 Jul 3 68.4 ns 185 Jul 4 68.8 ns 186 Jul 5 70.0 ns 187 Jul 6 71.8 ns 188 Jul 7 72.0 ns 189 Jul 8 73.1 ns 190 Jul 9 75.3 ns 191 Jul 10 74.6 ns 192 Jul 11 72.6 ns 193 Jul 12 71.8 ns 194 Jul 13 71.9 ns 195 Jul 14 72.5 ns 196 Jul 15 72.1 ns 197 Jul 16 66.8 ns 198 Jul 17 69.1 ns 199 Jul 18 71.3 ns 200 Jul 19 71.8 ns 201 Jul 20 67.8 ns 202 Jul 21 68.9 ns 203 Jul 22 69.1 ns 204 Jul 23 67.4 ns 205 Jul 24 64.5 ns 206 Jul 25 65.2 ns 207 Jul 26 65.6 ns 208 Jul 27 67.4 ns 209 Jul 28 70.6 ns 210 Jul 29 71.6 ns 211 Jul 30 71.2 ns 212 Jul 31 72.7 ns 213 Aug 1 73.8 ns 214 Aug 2 71.0 ns 215 Aug 3 68.8 ns 216 Aug 4 69.6 ns 217 Aug 5 72.9 ns 218 Aug 6 74.3 ns 219 Aug 7 75.2 ns 220 Aug 8 73.8 ns 221 Aug 9 72.8 ns 222 Aug 10 74.4 ns 223 Aug 11 73.0 ns 224 Aug 12 70.2 ns 225 Aug 13 70.7 ns 226 Aug 14 69.2 ns 227 Aug 15 68.0 ns 228 Aug 16 69.0 ns 229 Aug 17 68.0 ns 230 Aug 18 69.8 ns 231 Aug 19 70.4 ns 232 Aug 20 72.6 ns 233 Aug 21 73.5 ns 234 Aug 22 74.3 ns 235 Aug 23 74.1 ns 236 Aug 24 72.9 ns 237 Aug 25 70.2 ns 238 Aug 26 67.4 ns 239 Aug 27 68.6 ns 240 Aug 28 71.2 ns 241 Aug 29 69.2 ns 242 Aug 30 68.9 ns 243 Aug 31 70.8 ns 244 Sep 1 68.0 ns 245 Sep 2 71.0 ns 246 Sep 3 67.6 ns 247 Sep 4 66.3 ns 248 Sep 5 64.7 ns 249 Sep 6 65.5 ns 250 Sep 7 67.8 ns 251 Sep 8 68.4 ns 252 Sep 9 67.8 ns 253 Sep 10 69.0 ns 254 Sep 11 70.2 ns 255 Sep 12 66.4 ns 256 Sep 13 60.5 ns 257 Sep 14 59.1 ns 258 Sep 15 63.1 ns 259 Sep 16 65.2 ns 260 Sep 17 67.1 ns 261 Sep 18 65.6 ns 262 Sep 19 61.3 ns 263 Sep 20 64.0 ns 264 Sep 21 65.3 ns 265 Sep 22 61.0 ns 266 Sep 23 64.6 ns 267 Sep 24 67.0 ns 268 Sep 25 65.2 ns 269 Sep 26 56.3 ns 270 Sep 27 57.2 ns 271 Sep 28 56.5 ns 272 Sep 29 57.4 ns 273 Sep 30 58.1 ns 274 Oct 1 58.8 ns 275 Oct 2 60.0 ns 276 Oct 3 62.2 ns 277 Oct 4 56.3 ns 278 Oct 5 50.0 ns 279 Oct 6 52.1 ns 280 Oct 7 55.6 ns 281 Oct 8 59.5 ns 282 Oct 9 63.0 ns 283 Oct 10 62.5 ns 284 Oct 11 59.1 ns 285 Oct 12 59.9 ns 286 Oct 13 59.4 ns 287 Oct 14 56.2 ns 288 Oct 15 50.9 ns 289 Oct 16 46.7 ns 290 Oct 17 47.2 ns 291 Oct 18 48.9 ns 292 Oct 19 50.4 ns 293 Oct 20 50.4 ns 294 Oct 21 52.5 ns 295 Oct 22 54.7 ns 296 Oct 23 49.9 ns 297 Oct 24 49.2 ns 298 Oct 25 49.9 ns 299 Oct 26 49.3 ns 300 Oct 27 49.5 ns 301 Oct 28 52.7 ns 302 Oct 29 49.4 ns 303 Oct 30 47.6 ns 304 Oct 31 48.0 ns 305 Nov 1 49.0 ns 306 Nov 2 50.0 ns 307 Nov 3 48.7 ns 308 Nov 4 47.1 ns 309 Nov 5 46.3 ns 310 Nov 6 47.0 ns 311 Nov 7 47.1 ns 312 Nov 8 48.8 ns 313 Nov 9 48.8 ns 314 Nov 10 45.0 ns 315 Nov 11 46.3 ns 316 Nov 12 47.5 ns 317 Nov 13 48.2 ns 318 Nov 14 47.4 ns 319 Nov 15 48.5 ns 320 Nov 16 46.9 ns 321 Nov 17 42.8 ns 322 Nov 18 44.4 ns 323 Nov 19 41.3 ns 324 Nov 20 38.2 ns 325 Nov 21 37.5 ns 326 Nov 22 43.0 ns 327 Nov 23 40.2 ns 328 Nov 24 40.7 ns 329 Nov 25 40.1 ns 330 Nov 26 39.3 ns 331 Nov 27 39.9 ns 332 Nov 28 40.5 ns 333 Nov 29 38.0 ns 334 Nov 30 37.7 ns 335 Dec 1 36.4 ns 336 Dec 2 33.9 ns 337 Dec 3 33.4 ns 338 Dec 4 31.2 ns 339 Dec 5 31.2 ns 340 Dec 6 34.7 ns 341 Dec 7 35.8 ns 342 Dec 8 37.7 ns 343 Dec 9 37.8 ns