Maricopa, Arizona Cotton Heat Stress for 2023 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 72.0 ns 122 May 2 68.7 ns 123 May 3 68.0 ns 124 May 4 64.1 ns 125 May 5 62.2 ns 126 May 6 64.7 ns 127 May 7 66.4 ns 128 May 8 68.5 ns 129 May 9 69.6 ns 130 May 10 62.9 ns 131 May 11 65.1 ns 132 May 12 69.9 ns 133 May 13 73.7 ns 134 May 14 74.9 ns 135 May 15 78.4 ns 136 May 16 78.2 ns 137 May 17 77.9 ns 138 May 18 76.8 ns 139 May 19 73.3 ns 140 May 20 74.1 ns 141 May 21 76.1 ns 142 May 22 77.4 ns 143 May 23 75.8 ns 144 May 24 75.5 ns 145 May 25 73.9 ns 146 May 26 72.6 ns 147 May 27 71.6 ns 148 May 28 73.9 ns 149 May 29 74.2 ns 150 May 30 74.0 ns 151 May 31 70.1 ns 152 Jun 1 70.2 ns 153 Jun 2 72.3 ns 154 Jun 3 76.3 ns 155 Jun 4 78.0 ns 156 Jun 5 76.5 ns 157 Jun 6 73.1 ns 158 Jun 7 71.6 ns 159 Jun 8 70.8 ns 160 Jun 9 71.9 ns 161 Jun 10 72.8 ns 162 Jun 11 71.6 ns 163 Jun 12 70.6 ns 164 Jun 13 74.3 ns 165 Jun 14 74.7 ns 166 Jun 15 75.2 ns 167 Jun 16 75.7 ns 168 Jun 17 77.0 ns 169 Jun 18 78.9 ns 170 Jun 19 77.5 ns 171 Jun 20 77.5 ns 172 Jun 21 77.8 ns 173 Jun 22 76.9 ns 174 Jun 23 73.6 ns 175 Jun 24 72.6 ns 176 Jun 25 78.2 ns 177 Jun 26 79.3 ns 178 Jun 27 78.9 ns 179 Jun 28 78.6 ns 180 Jun 29 76.5 ns 181 Jun 30 78.6 ns 182 Jul 1 81.5 ns 183 Jul 2 84.7 L1 184 Jul 3 85.5 L1 185 Jul 4 85.7 L1 186 Jul 5 83.4 L1 187 Jul 6 83.0 L1 188 Jul 7 82.9 L1 189 Jul 8 83.2 L1 190 Jul 9 83.8 L1 191 Jul 10 85.8 L1 192 Jul 11 89.3 L2 193 Jul 12 89.4 L2 194 Jul 13 90.0 L2 195 Jul 14 89.4 L2 196 Jul 15 90.4 L2 197 Jul 16 89.7 L2 198 Jul 17 88.9 L2 199 Jul 18 88.5 L2 200 Jul 19 89.6 L2 201 Jul 20 88.0 L2 202 Jul 21 89.2 L2 203 Jul 22 89.3 L2 204 Jul 23 86.7 L2 205 Jul 24 88.4 L2 206 Jul 25 89.0 L2 207 Jul 26 90.7 L2 208 Jul 27 88.2 L2 209 Jul 28 89.3 L2 210 Jul 29 89.8 L2 211 Jul 30 89.4 L2 212 Jul 31 83.7 L1 213 Aug 1 84.9 L1 214 Aug 2 87.7 L2 215 Aug 3 86.3 L2 216 Aug 4 84.2 L1 217 Aug 5 85.1 L1 218 Aug 6 87.8 L2 219 Aug 7 89.6 L2 220 Aug 8 87.1 L2 221 Aug 9 87.6 L2 222 Aug 10 86.9 L2 223 Aug 11 84.9 L1 224 Aug 12 83.3 L1 225 Aug 13 82.8 L1 226 Aug 14 83.4 L1 227 Aug 15 87.7 L2 228 Aug 16 87.3 L2 229 Aug 17 87.5 L2 230 Aug 18 84.4 L1 231 Aug 19 80.2 ns 232 Aug 20 81.6 ns 233 Aug 21 78.3 ns 234 Aug 22 79.7 ns 235 Aug 23 82.8 L1 236 Aug 24 84.3 L1 237 Aug 25 85.4 L1 238 Aug 26 87.1 L2 239 Aug 27 87.7 L2 240 Aug 28 89.1 L2 241 Aug 29 87.6 L2 242 Aug 30 87.8 L2 243 Aug 31 85.3 L1 244 Sep 1 77.7 ns 245 Sep 2 79.8 ns 246 Sep 3 80.9 ns 247 Sep 4 80.6 ns 248 Sep 5 77.5 ns 249 Sep 6 78.2 ns 250 Sep 7 78.7 ns 251 Sep 8 83.1 L1 252 Sep 9 84.2 L1 253 Sep 10 84.1 L1 254 Sep 11 84.2 L1 255 Sep 12 82.2 ns 256 Sep 13 80.0 ns 257 Sep 14 78.4 ns 258 Sep 15 76.1 ns 259 Sep 16 77.1 ns 260 Sep 17 78.9 ns 261 Sep 18 76.9 ns 262 Sep 19 73.3 ns 263 Sep 20 73.9 ns 264 Sep 21 73.0 ns 265 Sep 22 71.9 ns 266 Sep 23 73.5 ns 267 Sep 24 74.1 ns 268 Sep 25 73.8 ns 269 Sep 26 74.6 ns 270 Sep 27 74.1 ns 271 Sep 28 76.0 ns 272 Sep 29 73.0 ns 273 Sep 30 72.5 ns 274 Oct 1 68.9 ns 275 Oct 2 67.0 ns 276 Oct 3 66.5 ns 277 Oct 4 67.4 ns 278 Oct 5 68.1 ns 279 Oct 6 71.8 ns 280 Oct 7 76.8 ns 281 Oct 8 76.2 ns 282 Oct 9 74.4 ns 283 Oct 10 73.1 ns 284 Oct 11 73.1 ns 285 Oct 12 67.4 ns 286 Oct 13 64.6 ns 287 Oct 14 66.4 ns 288 Oct 15 69.2 ns 289 Oct 16 73.4 ns 290 Oct 17 72.8 ns 291 Oct 18 70.1 ns 292 Oct 19 70.2 ns 293 Oct 20 69.9 ns 294 Oct 21 69.9 ns 295 Oct 22 71.2 ns 296 Oct 23 69.0 ns 297 Oct 24 67.1 ns 298 Oct 25 63.9 ns 299 Oct 26 65.2 ns 300 Oct 27 65.1 ns 301 Oct 28 64.9 ns 302 Oct 29 57.8 ns 303 Oct 30 57.0 ns 304 Oct 31 57.3 ns 305 Nov 1 60.7 ns 306 Nov 2 56.6 ns 307 Nov 3 57.6 ns 308 Nov 4 58.3 ns 309 Nov 5 59.8 ns 310 Nov 6 62.9 ns 311 Nov 7 63.8 ns 312 Nov 8 60.1 ns 313 Nov 9 53.2 ns 314 Nov 10 50.4 ns 315 Nov 11 53.0 ns 316 Nov 12 57.5 ns 317 Nov 13 60.3 ns 318 Nov 14 67.2 ns 319 Nov 15 63.9 ns 320 Nov 16 63.9 ns 321 Nov 17 65.6 ns 322 Nov 18 63.2 ns 323 Nov 19 58.2 ns 324 Nov 20 54.3 ns 325 Nov 21 54.9 ns 326 Nov 22 52.6 ns 327 Nov 23 49.3 ns 328 Nov 24 55.0 ns 329 Nov 25 51.0 ns 330 Nov 26 47.3 ns 331 Nov 27 51.1 ns 332 Nov 28 54.5 ns 333 Nov 29 54.0 ns 334 Nov 30 50.9 ns 335 Dec 1 51.5 ns 336 Dec 2 48.3 ns 337 Dec 3 46.3 ns 338 Dec 4 47.8 ns 339 Dec 5 50.9 ns 340 Dec 6 53.4 ns 341 Dec 7 52.3 ns 342 Dec 8 49.6 ns 343 Dec 9 45.7 ns