Tucson : 2026 Heat Units DOY = Day Of Year (1 to 365) Max = Maximum Air Temperature Min = Minimum Air Temperature HU = Daily Heat Units CUM = Accumulated Heat Units : Since Jan 1, 2026 * = Missing data. Max, Min Temps and Heat Units Estimated. Temperature and Heat Units are in Fahrenheit Units Heat Units calculated by Single Sine Method 86/55 86/50 86/45 94/55 RH ========== ========== ========== ========== =========== DOY Date Max Min HU CUM HU CUM HU CUM HU CUM Max Min Ave --- ------ --- --- ---- ---- ---- ---- ---- ---- ---- ---- --- --- --- 1 Jan 1 71 54 7.3 7 12.2 12 17.2 17 7.3 7 98 59 87 2 Jan 2 71 49 6.4 14 10.0 22 14.9 32 6.4 14 99 45 81 3 Jan 3 75 41 7.0 21 10.0 32 13.6 46 7.0 21 97 30 71 4 Jan 4 74 49 7.8 29 11.7 44 16.5 62 7.8 29 94 34 75 5 Jan 5 70 43 5.0 34 8.1 52 11.7 74 5.0 34 96 35 73 6 Jan 6 71 40 5.3 39 8.1 60 11.5 85 5.3 39 95 21 68 7 Jan 7 51 46 0.0 39 0.2 60 3.7 89 0.0 39 97 72 89 8 Jan 8 61 44 1.6 40 4.1 64 7.4 97 1.6 40 97 42 81 9 Jan 9 53 33 0.0 40 0.5 65 2.4 99 0.0 40 97 31 71 10 Jan 10 61 29 1.1 42 2.8 68 5.0 104 1.1 42 93 11 46 11 Jan 11 65 51 3.7 45 7.7 75 12.7 117 3.7 45 20 10 16 12 Jan 12 71 40 5.1 50 7.9 83 11.3 128 5.1 50 57 15 26 13 Jan 13 74 38 6.1 56 9.0 92 12.0 140 6.1 56 71 15 45 14 Jan 14 81 36 8.7 65 11.9 104 15.1 155 8.7 65 86 13 45 15 Jan 15 82 41 10.1 75 13.3 118 17.0 172 10.1 75 68 9 39 16 Jan 16 76 37 7.0 82 9.9 127 13.3 185 7.0 82 83 13 49 17 Jan 17 78 35 7.9 90 10.6 138 13.6 199 7.9 90 85 8 48 18 Jan 18 83 34 9.5 100 12.4 150 15.5 214 9.5 100 82 8 46 19 Jan 19 76 37 6.8 106 9.6 160 12.9 227 6.8 106 77 11 44 20 Jan 20 75 35 6.1 113 8.9 169 11.9 239 6.1 113 83 14 46 21 Jan 21 77 34 7.4 120 10.0 179 13.2 252 7.4 120 81 7 45 22 Jan 22 79 43 9.0 129 12.3 191 15.8 268 9.0 129 66 10 40 23 Jan 23 65 52 4.1 133 8.4 200 13.4 282 4.1 133 97 45 78 24 Jan 24 66 49 4.0 137 7.6 207 12.4 294 4.0 137 97 38 77 25 Jan 25 61 39 1.4 138 3.5 211 6.3 300 1.4 138 96 24 68 26 Jan 26 65 34 2.6 141 4.8 216 7.6 308 2.6 141 94 14 57 27 Jan 27 74 34 5.8 147 8.5 224 11.4 319 5.8 147 83 11 46 28 Jan 28 77 41 8.0 155 11.2 235 14.6 334 8.0 155 79 13 44 29 Jan 29 69 41 4.6 159 7.3 243 10.8 345 4.6 159 82 19 53 30 Jan 30 73 33 5.6 165 8.3 251 11.1 356 5.6 165 89 14 52 31 Jan 31 81 36 8.9 174 11.8 263 15.0 371 8.9 174 76 8 41 32 Feb 1 82 38 9.5 183 12.6 275 15.9 387 9.5 183 73 9 38 33 Feb 2 81 45 10.1 194 13.6 289 17.9 405 10.1 194 64 13 38 34 Feb 3 81 43 10.0 204 13.3 302 17.2 422 10.0 204 74 7 38 35 Feb 4 79 38 8.2 212 11.1 313 14.4 436 8.2 212 74 10 32 36 Feb 5 75 55 10.0 222 15.0 328 20.0 456 10.0 222 38 13 20 37 Feb 6 82 42 10.2 232 13.4 342 17.3 474 10.2 232 67 14 37 38 Feb 7 83 55 14.0 246 19.0 361 24.0 498 14.0 246 57 15 36 39 Feb 8 83 45 11.0 257 14.5 375 18.5 516 11.0 257 79 16 42 40 Feb 9 88 44 13.4 270 16.9 392 20.8 537 13.6 271 68 11 35 41 Feb 10 81 50 11.2 282 15.3 407 20.3 557 11.2 282 56 21 37 42 Feb 11 81 54 12.7 294 17.5 425 22.5 580 12.7 294 72 20 43 43 Feb 12 80 51 11.0 305 15.5 440 20.5 600 11.0 305 70 21 41 44 Feb 13 67 50 4.5 310 8.2 449 13.2 613 4.5 310 92 35 58 45 Feb 14 69 44 4.7 314 7.7 456 11.5 625 4.7 315 96 28 66 46 Feb 15 76 41 7.7 322 10.7 467 14.2 639 7.7 322 90 19 52 47 Feb 16 74 47 7.3 329 10.7 478 15.3 654 7.3 330 66 16 37 48 Feb 17 65 49 3.6 333 7.0 485 11.8 666 3.6 333 94 32 59 49 Feb 18 67 42 3.8 337 6.5 491 10.0 676 3.8 337 85 18 52 50 Feb 19 66 45 3.4 340 6.4 498 10.4 687 3.4 340 95 29 68 51 Feb 20 62 39 1.7 342 4.0 502 6.9 693 1.7 342 84 32 59 52 Feb 21 74 34 6.0 348 8.5 510 11.7 705 6.0 348 90 15 52 53 Feb 22 80 40 8.9 357 12.1 522 15.8 721 8.9 357 80 10 38 54 Feb 23 86 45 12.8 370 16.3 538 20.5 741 12.8 370 49 7 23 55 Feb 24 83 44 11.1 381 14.6 553 18.8 760 11.1 381 60 6 30 --- ------ --- --- ---- ---- ---- ---- ---- ---- ---- ---- --- --- --- DOY Date Max Min HU CUM HU CUM HU CUM HU CUM Max Min Ave ========== ========== ========== ========== =========== 86/55 86/50 86/45 94/55 RH Tucson