Yuma Valley, Arizona Cotton Heat Stress for 2021 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 72.7 ns 122 May 2 69.4 ns 123 May 3 68.8 ns 124 May 4 69.6 ns 125 May 5 70.9 ns 126 May 6 71.1 ns 127 May 7 70.6 ns 128 May 8 70.2 ns 129 May 9 69.8 ns 130 May 10 70.4 ns 131 May 11 70.5 ns 132 May 12 70.2 ns 133 May 13 70.8 ns 134 May 14 72.0 ns 135 May 15 71.9 ns 136 May 16 67.4 ns 137 May 17 69.3 ns 138 May 18 71.9 ns 139 May 19 74.5 ns 140 May 20 72.6 ns 141 May 21 63.6 ns 142 May 22 60.8 ns 143 May 23 65.4 ns 144 May 24 69.5 ns 145 May 25 70.7 ns 146 May 26 73.7 ns 147 May 27 71.5 ns 148 May 28 70.4 ns 149 May 29 71.0 ns 150 May 30 71.7 ns 151 May 31 72.9 ns 152 Jun 1 73.5 ns 153 Jun 2 74.6 ns 154 Jun 3 75.5 ns 155 Jun 4 75.3 ns 156 Jun 5 77.5 ns 157 Jun 6 76.1 ns 158 Jun 7 73.6 ns 159 Jun 8 72.6 ns 160 Jun 9 75.9 ns 161 Jun 10 74.5 ns 162 Jun 11 74.4 ns 163 Jun 12 76.1 ns 164 Jun 13 79.2 ns 165 Jun 14 78.3 ns 166 Jun 15 82.2 ns 167 Jun 16 82.2 ns 168 Jun 17 84.5 L1 169 Jun 18 85.6 L1 170 Jun 19 84.9 L1 171 Jun 20 83.7 L1 172 Jun 21 82.7 L1 173 Jun 22 82.8 L1 174 Jun 23 83.5 L1 175 Jun 24 83.0 L1 176 Jun 25 81.6 ns 177 Jun 26 80.9 ns 178 Jun 27 82.2 ns 179 Jun 28 84.0 L1 180 Jun 29 83.6 L1 181 Jun 30 83.9 L1 182 Jul 1 84.7 L1 183 Jul 2 83.9 L1 184 Jul 3 85.8 L1 185 Jul 4 85.8 L1 186 Jul 5 84.7 L1 187 Jul 6 82.1 ns 188 Jul 7 85.2 L1 189 Jul 8 88.1 L2 190 Jul 9 88.1 L2 191 Jul 10 89.1 L2 192 Jul 11 88.3 L2 193 Jul 12 86.4 L2 194 Jul 13 86.4 L2 195 Jul 14 86.6 L2 196 Jul 15 86.1 L2 197 Jul 16 86.1 L2 198 Jul 17 86.1 L2 199 Jul 18 86.1 L2 200 Jul 19 87.2 L2 201 Jul 20 88.3 L2 202 Jul 21 89.8 L2 203 Jul 22 89.1 L2 204 Jul 23 87.7 L2 205 Jul 24 84.9 L1 206 Jul 25 83.9 L1 207 Jul 26 83.8 L1 208 Jul 27 84.6 L1 209 Jul 28 87.4 L2 210 Jul 29 87.8 L2 211 Jul 30 84.8 L1 212 Jul 31 85.0 L1 213 Aug 1 87.0 L2 214 Aug 2 87.1 L2 215 Aug 3 86.8 L2 216 Aug 4 89.0 L2 217 Aug 5 89.4 L2 218 Aug 6 88.2 L2 219 Aug 7 86.3 L2 220 Aug 8 87.3 L2 221 Aug 9 87.7 L2 222 Aug 10 87.0 L2 223 Aug 11 83.0 L1 224 Aug 12 87.1 L2 225 Aug 13 87.8 L2 226 Aug 14 83.7 L1 227 Aug 15 86.5 L2 228 Aug 16 87.8 L2 229 Aug 17 87.8 L2 230 Aug 18 85.1 L1 231 Aug 19 81.0 ns 232 Aug 20 81.7 ns 233 Aug 21 79.9 ns 234 Aug 22 77.3 ns 235 Aug 23 78.0 ns 236 Aug 24 83.9 L1 237 Aug 25 85.8 L1 238 Aug 26 88.2 L2 239 Aug 27 87.9 L2 240 Aug 28 87.4 L2 241 Aug 29 85.3 L1 242 Aug 30 86.4 L2 243 Aug 31 83.9 L1 244 Sep 1 82.7 L1 245 Sep 2 82.5 L1 246 Sep 3 83.1 L1 247 Sep 4 83.0 L1 248 Sep 5 86.1 L2 249 Sep 6 87.2 L2 250 Sep 7 86.7 L2 251 Sep 8 85.8 L1 252 Sep 9 85.7 L1 253 Sep 10 85.6 L1 254 Sep 11 86.9 L2 255 Sep 12 85.9 L1 256 Sep 13 86.3 L2 257 Sep 14 84.4 L1 258 Sep 15 81.2 ns 259 Sep 16 82.0 ns 260 Sep 17 85.6 L1 261 Sep 18 82.5 L1 262 Sep 19 79.1 ns 263 Sep 20 78.7 ns 264 Sep 21 78.6 ns 265 Sep 22 79.5 ns 266 Sep 23 81.1 ns 267 Sep 24 73.6 ns 268 Sep 25 74.1 ns 269 Sep 26 78.0 ns 270 Sep 27 77.6 ns 271 Sep 28 77.6 ns 272 Sep 29 72.8 ns 273 Sep 30 73.2 ns 274 Oct 1 70.4 ns 275 Oct 2 72.6 ns 276 Oct 3 73.2 ns 277 Oct 4 73.2 ns 278 Oct 5 76.2 ns 279 Oct 6 74.9 ns 280 Oct 7 75.5 ns 281 Oct 8 72.4 ns 282 Oct 9 68.5 ns 283 Oct 10 68.3 ns 284 Oct 11 63.9 ns 285 Oct 12 58.3 ns 286 Oct 13 57.9 ns 287 Oct 14 60.6 ns 288 Oct 15 66.6 ns 289 Oct 16 67.6 ns 290 Oct 17 63.9 ns 291 Oct 18 63.8 ns 292 Oct 19 62.4 ns 293 Oct 20 63.5 ns 294 Oct 21 65.5 ns 295 Oct 22 65.0 ns 296 Oct 23 64.6 ns 297 Oct 24 66.8 ns 298 Oct 25 68.5 ns 299 Oct 26 61.1 ns 300 Oct 27 64.2 ns 301 Oct 28 68.3 ns 302 Oct 29 66.9 ns 303 Oct 30 65.9 ns 304 Oct 31 66.9 ns 305 Nov 1 67.0 ns