Yuma Valley, 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 66.7 ns 122 May 2 67.0 ns 123 May 3 68.3 ns 124 May 4 64.9 ns 125 May 5 63.1 ns 126 May 6 67.0 ns 127 May 7 66.2 ns 128 May 8 70.4 ns 129 May 9 77.6 ns 130 May 10 77.0 ns 131 May 11 76.2 ns 132 May 12 73.4 ns 133 May 13 65.6 ns 134 May 14 65.1 ns 135 May 15 66.8 ns 136 May 16 68.1 ns 137 May 17 68.2 ns 138 May 18 67.8 ns 139 May 19 70.5 ns 140 May 20 71.8 ns 141 May 21 73.3 ns 142 May 22 73.9 ns 143 May 23 74.6 ns 144 May 24 73.2 ns 145 May 25 71.3 ns 146 May 26 72.5 ns 147 May 27 73.4 ns 148 May 28 71.3 ns 149 May 29 72.1 ns 150 May 30 73.6 ns 151 May 31 76.8 ns 152 Jun 1 74.2 ns 153 Jun 2 75.5 ns 154 Jun 3 76.9 ns 155 Jun 4 75.6 ns 156 Jun 5 76.5 ns 157 Jun 6 73.8 ns 158 Jun 7 73.1 ns 159 Jun 8 75.8 ns 160 Jun 9 77.5 ns 161 Jun 10 76.9 ns 162 Jun 11 77.1 ns 163 Jun 12 76.6 ns 164 Jun 13 77.0 ns 165 Jun 14 76.9 ns 166 Jun 15 78.7 ns 167 Jun 16 79.9 ns 168 Jun 17 80.0 ns 169 Jun 18 79.3 ns 170 Jun 19 80.0 ns 171 Jun 20 79.3 ns 172 Jun 21 78.1 ns 173 Jun 22 74.9 ns 174 Jun 23 76.2 ns 175 Jun 24 76.0 ns 176 Jun 25 76.2 ns 177 Jun 26 76.2 ns 178 Jun 27 78.8 ns 179 Jun 28 81.4 ns 180 Jun 29 86.4 L2 181 Jun 30 87.7 L2 182 Jul 1 86.6 L2 183 Jul 2 83.8 L1 184 Jul 3 82.7 L1 185 Jul 4 83.5 L1 186 Jul 5 83.2 L1 187 Jul 6 82.4 L1 188 Jul 7 84.0 L1 189 Jul 8 86.2 L2 190 Jul 9 87.2 L2 191 Jul 10 86.9 L2 192 Jul 11 85.5 L1 193 Jul 12 83.9 L1 194 Jul 13 82.0 ns 195 Jul 14 82.9 L1 196 Jul 15 85.0 L1 197 Jul 16 84.3 L1 198 Jul 17 84.7 L1 199 Jul 18 81.7 ns 200 Jul 19 79.4 ns 201 Jul 20 80.2 ns 202 Jul 21 81.1 ns 203 Jul 22 81.6 ns 204 Jul 23 78.6 ns 205 Jul 24 80.9 ns 206 Jul 25 81.7 ns 207 Jul 26 80.7 ns 208 Jul 27 80.1 ns 209 Jul 28 80.4 ns 210 Jul 29 82.5 L1 211 Jul 30 82.0 ns 212 Jul 31 84.0 L1 213 Aug 1 83.9 L1 214 Aug 2 81.1 ns 215 Aug 3 82.6 L1 216 Aug 4 84.3 L1 217 Aug 5 84.7 L1 218 Aug 6 85.8 L1 219 Aug 7 86.6 L2 220 Aug 8 88.4 L2 221 Aug 9 87.2 L2 222 Aug 10 87.1 L2 223 Aug 11 86.7 L2 224 Aug 12 86.6 L2 225 Aug 13 85.7 L1 226 Aug 14 85.7 L1 227 Aug 15 85.6 L1 228 Aug 16 84.3 L1 229 Aug 17 81.8 ns 230 Aug 18 80.1 ns 231 Aug 19 83.6 L1 232 Aug 20 86.0 L1 233 Aug 21 88.3 L2 234 Aug 22 88.9 L2 235 Aug 23 88.6 L2 236 Aug 24 87.3 L2 237 Aug 25 81.5 ns 238 Aug 26 80.2 ns 239 Aug 27 84.5 L1 240 Aug 28 82.5 L1 241 Aug 29 82.2 ns 242 Aug 30 83.6 L1 243 Aug 31 84.4 L1 244 Sep 1 86.9 L2 245 Sep 2 84.6 L1 246 Sep 3 84.1 L1 247 Sep 4 84.1 L1 248 Sep 5 82.1 ns 249 Sep 6 84.5 L1 250 Sep 7 85.9 L1 251 Sep 8 85.6 L1 252 Sep 9 82.0 ns 253 Sep 10 79.7 ns 254 Sep 11 77.8 ns 255 Sep 12 75.9 ns 256 Sep 13 76.5 ns 257 Sep 14 77.4 ns 258 Sep 15 77.4 ns 259 Sep 16 83.4 L1 260 Sep 17 85.3 L1 261 Sep 18 82.0 ns 262 Sep 19 82.7 L1 263 Sep 20 83.9 L1 264 Sep 21 80.6 ns 265 Sep 22 78.5 ns 266 Sep 23 82.2 ns 267 Sep 24 85.3 L1 268 Sep 25 83.6 L1 269 Sep 26 76.1 ns 270 Sep 27 72.1 ns 271 Sep 28 75.4 ns 272 Sep 29 77.5 ns 273 Sep 30 78.4 ns 274 Oct 1 74.7 ns 275 Oct 2 75.5 ns 276 Oct 3 73.0 ns 277 Oct 4 69.0 ns 278 Oct 5 68.3 ns 279 Oct 6 70.3 ns 280 Oct 7 70.4 ns 281 Oct 8 71.6 ns 282 Oct 9 78.4 ns 283 Oct 10 76.1 ns 284 Oct 11 77.6 ns 285 Oct 12 75.2 ns 286 Oct 13 71.7 ns 287 Oct 14 65.0 ns 288 Oct 15 64.4 ns 289 Oct 16 63.9 ns 290 Oct 17 62.6 ns 291 Oct 18 64.0 ns 292 Oct 19 65.3 ns 293 Oct 20 66.1 ns 294 Oct 21 66.5 ns 295 Oct 22 68.9 ns 296 Oct 23 68.1 ns 297 Oct 24 66.8 ns 298 Oct 25 67.2 ns 299 Oct 26 68.3 ns 300 Oct 27 67.7 ns 301 Oct 28 69.3 ns 302 Oct 29 71.1 ns 303 Oct 30 66.5 ns 304 Oct 31 65.0 ns 305 Nov 1 64.6 ns 306 Nov 2 64.7 ns 307 Nov 3 65.5 ns 308 Nov 4 64.6 ns 309 Nov 5 64.9 ns 310 Nov 6 63.8 ns 311 Nov 7 64.2 ns 312 Nov 8 64.4 ns 313 Nov 9 67.0 ns 314 Nov 10 68.6 ns 315 Nov 11 64.5 ns 316 Nov 12 64.6 ns 317 Nov 13 65.6 ns 318 Nov 14 69.8 ns 319 Nov 15 65.4 ns 320 Nov 16 59.8 ns 321 Nov 17 60.4 ns 322 Nov 18 56.6 ns 323 Nov 19 54.9 ns 324 Nov 20 53.8 ns 325 Nov 21 52.7 ns 326 Nov 22 52.7 ns 327 Nov 23 53.1 ns 328 Nov 24 56.0 ns 329 Nov 25 55.7 ns 330 Nov 26 57.1 ns 331 Nov 27 59.0 ns 332 Nov 28 55.6 ns 333 Nov 29 54.1 ns 334 Nov 30 53.9 ns 335 Dec 1 55.0 ns 336 Dec 2 50.9 ns 337 Dec 3 50.0 ns 338 Dec 4 51.5 ns 339 Dec 5 47.7 ns 340 Dec 6 49.3 ns 341 Dec 7 51.8 ns 342 Dec 8 54.7 ns 343 Dec 9 55.6 ns