Station ID: KOAK Lat: 37.71 Long: 122.23 GFS Model Run: 12Z 4APR 2026 Clouds Bases and Tops are now agl HR Valid 2m Tmp 2m Dpt 10m Dir 10m Spd TPrcp CPrcp 1000-500 500mb 850mb 500mb MSLP TCC PRS WX Low Middle High Max Min Sfc Snowfall PWAT 925mb Deg F Deg F deg kt in. in. Thk GPH Tmp Tmp mb % TEXT Clouds Clouds Clouds Tmp Tmp Vis in in Tmp 0 04/04 12Z 53 40 77 2 0.00 0.00 561 577 11.8 -13.9 1018.8 56 CLR CLR 000BKN000 **** **** 15.0 0.0 0.268 15.6 3 04/04 15Z 55 43 68 3 0.00 0.00 561 577 11.6 -14.0 1019.4 59 CLR CLR 313BKN377 55 52 15.0 0.0 0.327 16.3 6 04/04 18Z 67 45 15 1 0.00 0.00 561 577 12.5 -14.1 1019.1 64 CLR CLR 311BKN385 67 52 15.0 0.0 0.341 16.6 9 04/04 21Z 74 47 314 2 0.00 0.00 562 577 12.2 -14.1 1017.7 100 CLR CLR 275OVC392 74 68 15.0 0.0 0.387 17.4 12 04/05 00Z 72 47 267 4 0.00 0.00 562 576 12.3 -13.9 1016.3 100 CLR CLR 273OVC388 76 68 15.0 0.0 0.415 18.1 15 04/05 03Z 63 45 301 6 0.00 0.00 562 576 13.3 -14.0 1016.7 96 CLR CLR 265BKN376 73 63 15.0 0.0 0.405 18.0 18 04/05 06Z 59 45 327 2 0.00 0.00 561 576 13.1 -14.3 1017.7 57 CLR CLR 267BKN365 73 58 15.0 0.0 0.396 17.6 21 04/05 09Z 58 44 108 2 0.00 0.00 561 575 13.1 -15.1 1016.9 100 CLR CLR 286OVC365 59 57 15.0 0.0 0.391 17.8 24 04/05 12Z 57 43 99 2 0.00 0.00 560 574 12.9 -15.7 1016.3 100 CLR CLR 265OVC359 59 57 15.0 0.0 0.410 17.8 27 04/05 15Z 59 45 16 1 0.00 0.00 559 574 12.9 -16.5 1016.9 100 CLR 206BKN242 243OVC302 59 57 15.0 0.0 0.465 17.7 30 04/05 18Z 70 47 308 1 0.00 0.00 560 574 13.0 -16.0 1016.7 68 CLR 198SCT242 245BKN298 70 57 15.0 0.0 0.460 16.8 33 04/05 21Z 73 47 296 6 0.00 0.00 561 574 13.0 -15.7 1015.2 7 CLR 180FEW197 368FEW380 74 70 15.0 0.0 0.470 18.7 36 04/06 00Z 70 46 285 9 0.00 0.00 561 574 13.6 -15.7 1014.6 41 CLR 180FEW194 329SCT371 75 68 15.0 0.0 0.544 19.1 39 04/06 03Z 59 45 293 5 0.00 0.00 560 573 13.2 -16.5 1015.3 100 CLR 176FEW196 283OVC363 69 59 15.0 0.0 0.593 18.7 42 04/06 06Z 56 46 249 2 0.00 0.00 559 573 12.8 -17.2 1016.5 84 CLR 166FEW196 283BKN358 70 56 15.0 0.0 0.568 17.4 45 04/06 09Z 54 46 277 3 0.00 0.00 559 573 12.7 -16.7 1016.7 75 CLR 156BKN187 297FEW333 56 54 15.0 0.0 0.492 16.5 48 04/06 12Z 52 47 284 3 0.00 0.00 558 572 12.7 -16.8 1016.6 38 CLR 155SCT187 299FEW332 56 52 15.0 0.0 0.496 15.9 51 04/06 15Z 54 47 283 2 0.00 0.00 558 572 12.5 -16.9 1017.2 31 CLR CLR 316SCT356 55 52 15.0 0.0 0.461 15.5 54 04/06 18Z 63 46 289 5 0.00 0.00 558 573 12.2 -16.4 1018.0 23 CLR CLR 318FEW356 63 51 15.0 0.0 0.433 14.7 57 04/06 21Z 65 44 290 8 0.00 0.00 558 573 12.3 -15.8 1017.6 0 CLR CLR CLR 65 63 15.0 0.0 0.375 15.1 60 04/07 00Z 62 44 287 9 0.00 0.00 559 573 12.5 -14.6 1016.7 0 CLR CLR CLR 65 61 15.0 0.0 0.419 15.0 63 04/07 03Z 53 49 281 6 0.00 0.00 559 574 12.5 -14.6 1017.8 4 CLR CLR 346FEW362 62 53 15.0 0.0 0.505 14.3 66 04/07 06Z 52 49 258 4 0.00 0.00 559 574 12.8 -14.6 1018.4 2 CLR CLR 347FEW363 62 52 15.0 0.0 0.557 13.9 69 04/07 09Z 51 49 241 3 0.00 0.00 559 574 12.4 -14.6 1018.4 29 010FEW013 CLR 307FEW394 52 51 15.0 0.0 0.532 13.3 72 04/07 12Z 50 48 218 3 0.00 0.00 558 573 12.4 -15.3 1017.8 43 009FEW013 CLR 320SCT407 52 50 15.0 0.0 0.511 13.4 75 04/07 15Z 53 49 234 3 0.00 0.00 558 573 12.0 -15.2 1018.5 74 009FEW014 CLR 301BKN414 53 50 15.0 0.0 0.518 13.3 78 04/07 18Z 61 47 274 5 0.00 0.00 559 574 11.7 -14.9 1018.8 58 009FEW015 CLR 320BKN412 61 50 15.0 0.0 0.527 13.3 81 04/07 21Z 62 46 277 8 0.00 0.00 559 574 12.0 -14.8 1017.9 61 CLR CLR 358BKN406 63 61 15.0 0.0 0.567 13.8 84 04/08 00Z 61 46 283 8 0.00 0.00 559 573 12.4 -14.7 1016.5 70 CLR CLR 355BKN411 63 60 15.0 0.0 0.669 14.8 87 04/08 03Z 54 48 267 5 0.00 0.00 559 573 12.3 -15.3 1016.9 70 CLR 191FEW201 349BKN406 61 54 15.0 0.0 0.856 14.7 90 04/08 06Z 53 48 218 3 0.00 0.00 558 572 11.6 -15.7 1017.2 72 107FEW120 151FEW163 339BKN404 61 53 15.0 0.0 0.950 13.9 93 04/08 09Z 53 49 199 4 0.00 0.00 557 571 11.4 -16.3 1016.6 93 106FEW120 120FEW146 332BKN396 53 53 15.0 0.0 1.029 12.9 96 04/08 12Z 53 50 187 3 0.00 0.00 556 569 10.0 -17.0 1016.0 65 105FEW118 126FEW153 325BKN393 53 53 15.0 0.0 1.072 12.2 99 04/08 15Z 55 52 188 3 0.03 0.03 554 568 9.4 -17.8 1016.2 42 -TSRA 078FEW093 148SCT191 322FEW366 56 53 10.5 0.0 1.150 11.2 102 04/08 18Z 62 55 263 3 0.01 0.01 554 568 9.0 -17.8 1016.2 70 -TSRA 039SCT049 140SCT183 290SCT376 62 53 15.0 0.0 1.072 10.9 105 04/08 21Z 65 55 284 8 0.00 0.00 555 567 9.3 -17.4 1014.7 100 027BKN040 120FEW151 284BKN366 65 62 13.3 0.0 1.072 12.2 108 04/09 00Z 62 55 275 10 0.00 0.00 554 566 8.7 -16.8 1013.6 98 028BKN040 120FEW150 278BKN371 65 61 13.3 0.0 0.970 11.7 111 04/09 03Z 59 56 287 4 0.00 0.00 554 565 7.8 -16.5 1013.3 100 013BKN041 230FEW240 243OVC366 62 59 15.1 0.0 0.943 11.6 114 04/09 06Z 58 56 271 4 0.01 0.00 553 564 6.9 -17.6 1013.4 100 010BKN037 227FEW239 241OVC368 62 57 14.9 0.0 0.810 10.2 117 04/09 09Z 56 55 288 3 0.02 0.01 552 563 5.5 -18.2 1012.8 100 -RA 000OVC053 222SCT239 239OVC375 58 56 14.7 0.0 0.811 9.9 120 04/09 12Z 55 53 287 3 0.01 0.01 551 561 5.6 -18.6 1012.0 100 -RA 009BKN055 208BKN238 238OVC374 58 55 15.0 0.0 0.751 9.7 123 04/09 15Z 56 53 309 1 0.00 0.00 550 560 5.5 -19.8 1012.5 100 024FEW030 181OVC238 238OVC363 56 54 15.0 0.0 0.814 9.1 126 04/09 18Z 62 52 282 1 0.00 0.00 549 560 5.8 -19.9 1012.4 100 046FEW054 170BKN231 243OVC346 62 54 15.0 0.0 0.819 9.6 129 04/09 21Z 63 51 263 9 0.01 0.01 549 559 5.4 -20.4 1011.6 55 -RA 060FEW076 152SCT183 CLR 64 62 14.5 0.0 0.875 10.7 132 04/10 00Z 61 50 272 11 0.01 0.01 548 557 5.5 -21.5 1010.8 64 -RA 055SCT076 135SCT154 236FEW251 64 60 15.0 0.0 0.812 10.0 135 04/10 03Z 55 51 289 5 0.00 0.00 547 556 5.9 -22.0 1010.8 94 081FEW094 201BKN229 236BKN269 61 55 15.0 0.0 0.865 8.7 138 04/10 06Z 53 51 181 2 0.01 0.01 546 556 5.4 -22.5 1011.0 97 -RA 080FEW102 195BKN229 236BKN270 61 53 6.3 0.0 0.899 9.4 141 04/10 09Z 53 52 177 3 0.06 0.05 546 555 5.6 -23.1 1010.9 100 -TSRA 023OVC118 138BKN203 235BKN264 54 52 10.1 0.0 0.911 9.6 144 04/10 12Z 53 52 306 2 0.04 0.03 546 555 5.7 -23.0 1011.0 100 -TSRA 023BKN112 142BKN216 235BKN269 54 53 14.5 0.0 0.867 8.8 147 04/10 15Z 54 52 311 3 0.00 0.00 546 556 5.0 -22.5 1012.0 99 023OVC090 149FEW168 238FEW276 54 53 15.0 0.0 0.852 8.6 150 04/10 18Z 59 52 297 3 0.00 0.00 547 557 5.3 -22.0 1012.5 89 -RA 039BKN091 155FEW174 239FEW270 59 53 14.8 0.0 0.823 9.2 153 04/10 21Z 62 52 295 5 0.04 0.04 548 558 5.5 -21.3 1012.1 30 -TSRA 054SCT071 CLR CLR 63 59 14.4 0.0 0.863 10.8 156 04/11 00Z 62 50 289 10 0.03 0.03 549 559 6.0 -20.4 1011.5 28 -TSRA 058SCT073 CLR CLR 64 59 14.5 0.0 0.833 10.7 159 04/11 03Z 54 50 292 6 0.00 0.00 551 560 6.9 -19.4 1011.8 1 CLR CLR CLR 61 54 15.0 0.0 0.776 11.2 162 04/11 06Z 52 49 259 3 0.00 0.00 550 561 6.8 -18.9 1013.0 7 CLR CLR 241FEW286 62 52 15.0 0.0 0.773 10.9 165 04/11 09Z 51 49 249 3 0.00 0.00 550 561 6.9 -19.7 1013.4 89 CLR 205BKN238 238BKN287 52 51 14.9 0.0 0.755 10.4 168 04/11 12Z 51 48 254 2 0.00 0.00 549 560 6.7 -19.3 1013.2 94 008FEW015 186BKN234 239BKN285 52 51 14.9 0.0 0.847 10.1