Yuma Valley, Arizona Cotton Heat Stress for 2018 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 59.5 ns 122 May 2 58.7 ns 123 May 3 62.4 ns 124 May 4 69.5 ns 125 May 5 72.3 ns 126 May 6 73.4 ns 127 May 7 73.2 ns 128 May 8 72.9 ns 129 May 9 73.3 ns 130 May 10 73.2 ns 131 May 11 70.9 ns 132 May 12 66.3 ns 133 May 13 66.4 ns 134 May 14 66.4 ns 135 May 15 70.3 ns 136 May 16 71.3 ns 137 May 17 72.5 ns 138 May 18 69.4 ns 139 May 19 69.3 ns 140 May 20 69.6 ns 141 May 21 70.8 ns 142 May 22 68.3 ns 143 May 23 69.0 ns 144 May 24 69.5 ns 145 May 25 70.3 ns 146 May 26 68.1 ns 147 May 27 69.8 ns 148 May 28 71.8 ns 149 May 29 74.3 ns 150 May 30 73.5 ns 151 May 31 74.1 ns 152 Jun 1 73.4 ns 153 Jun 2 73.0 ns 154 Jun 3 75.8 ns 155 Jun 4 75.6 ns 156 Jun 5 75.4 ns 157 Jun 6 75.2 ns 158 Jun 7 75.0 ns 159 Jun 8 75.7 ns 160 Jun 9 77.3 ns 161 Jun 10 76.2 ns 162 Jun 11 75.8 ns 163 Jun 12 76.2 ns 164 Jun 13 78.4 ns 165 Jun 14 79.7 ns 166 Jun 15 78.1 ns 167 Jun 16 77.7 ns 168 Jun 17 73.6 ns 169 Jun 18 72.3 ns 170 Jun 19 73.8 ns 171 Jun 20 75.7 ns 172 Jun 21 76.1 ns 173 Jun 22 78.7 ns 174 Jun 23 79.4 ns 175 Jun 24 78.1 ns 176 Jun 25 78.1 ns 177 Jun 26 77.8 ns 178 Jun 27 78.5 ns 179 Jun 28 79.1 ns 180 Jun 29 79.9 ns 181 Jun 30 77.4 ns 182 Jul 1 77.9 ns 183 Jul 2 78.4 ns 184 Jul 3 78.6 ns 185 Jul 4 79.8 ns 186 Jul 5 82.6 L1 187 Jul 6 87.4 L2 188 Jul 7 87.1 L2 189 Jul 8 86.6 L2 190 Jul 9 84.2 L1 191 Jul 10 83.2 L1 191 Jul 10 83.2 L1 192 Jul 11 84.9 L1 193 Jul 12 85.1 L1 194 Jul 13 84.9 L1 195 Jul 14 85.5 L1 196 Jul 15 84.9 L1 197 Jul 16 86.7 L2 198 Jul 17 87.1 L2 199 Jul 18 84.5 L1 200 Jul 19 85.1 L1 201 Jul 20 85.1 L1 202 Jul 21 83.6 L1 203 Jul 22 85.8 L1 204 Jul 23 88.2 L2 205 Jul 24 88.4 L2 206 Jul 25 88.7 L2 207 Jul 26 88.6 L2 208 Jul 27 87.5 L2 209 Jul 28 88.0 L2 210 Jul 29 86.8 L2 211 Jul 30 88.2 L2 212 Jul 31 89.1 L2 213 Aug 1 89.1 L2 214 Aug 2 89.0 L2 215 Aug 3 89.1 L2 216 Aug 4 89.3 L2 217 Aug 5 87.7 L2 218 Aug 6 88.4 L2 219 Aug 7 89.0 L2 220 Aug 8 87.7 L2 221 Aug 9 86.6 L2 222 Aug 10 87.2 L2 223 Aug 11 85.9 L1 224 Aug 12 87.0 L2 225 Aug 13 85.6 L1 226 Aug 14 85.5 L1 227 Aug 15 86.0 L1 228 Aug 16 86.0 L1 229 Aug 17 86.4 L2 230 Aug 18 87.1 L2 231 Aug 19 88.9 L2 232 Aug 20 87.1 L2 233 Aug 21 86.8 L2 234 Aug 22 86.1 L2 235 Aug 23 84.8 L1 236 Aug 24 85.2 L1 237 Aug 25 84.9 L1 238 Aug 26 82.2 ns 239 Aug 27 80.8 ns 240 Aug 28 81.4 ns 241 Aug 29 80.1 ns 242 Aug 30 84.7 L1 243 Aug 31 84.9 L1 244 Sep 1 83.8 L1 245 Sep 2 82.4 ns 246 Sep 3 80.2 ns 247 Sep 4 78.0 ns 248 Sep 5 79.4 ns 249 Sep 6 82.2 ns 250 Sep 7 83.5 L1 251 Sep 8 85.5 L1 252 Sep 9 86.8 L2 253 Sep 10 84.4 L1 254 Sep 11 82.9 L1 255 Sep 12 79.1 ns 256 Sep 13 77.8 ns 257 Sep 14 79.1 ns 258 Sep 15 82.5 L1 259 Sep 16 87.0 L2 260 Sep 17 84.6 L1 261 Sep 18 86.1 L2 262 Sep 19 85.2 L1 263 Sep 20 84.4 L1 264 Sep 21 83.8 L1 265 Sep 22 83.4 L1 266 Sep 23 84.3 L1 267 Sep 24 80.8 ns 268 Sep 25 76.6 ns 269 Sep 26 78.4 ns 270 Sep 27 79.3 ns 271 Sep 28 79.6 ns 272 Sep 29 81.2 ns 273 Sep 30 78.2 ns 274 Oct 1 74.1 ns 275 Oct 2 76.2 ns 276 Oct 3 78.1 ns 277 Oct 4 73.5 ns 278 Oct 5 72.3 ns 279 Oct 6 71.0 ns 280 Oct 7 68.5 ns 281 Oct 8 64.6 ns 282 Oct 9 66.7 ns 283 Oct 10 69.5 ns 284 Oct 11 69.4 ns 285 Oct 12 70.6 ns 286 Oct 13 69.5 ns 287 Oct 14 68.5 ns 288 Oct 15 62.8 ns 289 Oct 16 63.0 ns 290 Oct 17 63.3 ns 291 Oct 18 66.6 ns 292 Oct 19 68.2 ns 293 Oct 20 70.7 ns 294 Oct 21 67.7 ns 295 Oct 22 67.7 ns 296 Oct 23 70.7 ns 297 Oct 24 70.0 ns 298 Oct 25 68.1 ns 299 Oct 26 67.8 ns 300 Oct 27 67.6 ns 301 Oct 28 67.9 ns 302 Oct 29 68.2 ns 303 Oct 30 68.1 ns 304 Oct 31 62.9 ns 305 Nov 1 59.6 ns