Station ID: KOAK Lat: 37.71 Long: 122.23 GFS Model Run: 12Z 20MAY 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 05/20 12Z 54 47 216 1 0.00 0.00 563 575 15.3 -14.7 1014.4 68 CLR CLR 000BKN000 **** **** 15.0 0.0 0.512 21.2 3 05/20 15Z 59 48 284 2 0.00 0.00 563 575 15.4 -14.8 1014.6 94 CLR CLR 285BKN420 60 53 15.0 0.0 0.558 20.9 6 05/20 18Z 69 49 292 5 0.00 0.00 563 575 15.6 -14.8 1014.1 79 CLR CLR 277BKN418 69 53 15.2 0.0 0.572 20.3 9 05/20 21Z 72 48 295 8 0.00 0.00 564 575 15.8 -14.2 1012.8 43 CLR 234FEW244 276SCT343 72 69 15.1 0.0 0.557 21.2 12 05/21 00Z 67 48 292 8 0.00 0.00 565 575 16.5 -13.4 1011.7 36 CLR 234FEW244 274SCT337 72 66 13.4 0.0 0.516 21.6 15 05/21 03Z 57 48 298 6 0.00 0.00 566 576 17.0 -12.1 1011.4 0 CLR CLR CLR 67 57 13.4 0.0 0.537 21.8 18 05/21 06Z 54 48 284 2 0.00 0.00 567 577 17.2 -10.4 1012.1 0 CLR CLR CLR 67 54 13.3 0.0 0.532 21.7 21 05/21 09Z 53 47 301 2 0.00 0.00 567 577 17.5 -9.8 1011.5 4 CLR CLR 310FEW332 54 53 13.2 0.0 0.522 22.0 24 05/21 12Z 52 47 295 2 0.00 0.00 568 577 17.3 -10.0 1011.0 7 CLR CLR 335FEW362 54 52 15.0 0.0 0.525 21.8 27 05/21 15Z 59 47 306 3 0.00 0.00 568 578 17.1 -9.9 1012.0 10 CLR CLR 363FEW405 59 52 15.0 0.0 0.539 21.3 30 05/21 18Z 69 49 294 5 0.00 0.00 568 578 17.1 -9.9 1011.6 19 CLR CLR 395FEW433 69 52 15.2 0.0 0.553 21.1 33 05/21 21Z 72 49 293 8 0.00 0.00 569 578 17.4 -10.0 1010.6 6 CLR CLR 432FEW382 73 69 15.1 0.0 0.533 22.3 36 05/22 00Z 66 48 298 9 0.00 0.00 570 578 18.0 -9.8 1009.6 6 CLR CLR 436FEW406 73 65 13.3 0.0 0.499 23.0 39 05/22 03Z 57 49 304 5 0.00 0.00 569 578 18.1 -10.1 1009.8 3 CLR CLR 443FEW422 66 57 13.3 0.0 0.486 22.2 42 05/22 06Z 54 49 293 4 0.00 0.00 569 577 18.1 -10.7 1010.3 1 CLR CLR 443FEW419 66 54 15.1 0.0 0.467 20.9 45 05/22 09Z 52 48 290 3 0.00 0.00 568 576 18.2 -10.8 1009.4 0 CLR CLR CLR 54 52 15.0 0.0 0.451 20.2 48 05/22 12Z 51 48 293 2 0.00 0.00 567 575 18.1 -11.6 1009.2 9 CLR CLR 408FEW443 54 51 15.0 0.0 0.465 19.2 51 05/22 15Z 56 48 279 2 0.00 0.00 567 575 17.5 -11.3 1009.9 5 CLR CLR 419FEW455 56 50 15.0 0.0 0.479 18.6 54 05/22 18Z 66 49 293 4 0.00 0.00 567 575 16.9 -11.6 1009.7 4 CLR CLR 412FEW436 66 50 15.2 0.0 0.488 18.3 57 05/22 21Z 68 51 297 10 0.00 0.00 567 575 16.9 -11.0 1009.2 2 CLR CLR 368FEW385 70 66 15.0 0.0 0.536 19.5 60 05/23 00Z 64 50 302 10 0.00 0.00 568 575 17.3 -10.0 1008.5 3 CLR CLR 359FEW379 70 63 15.0 0.0 0.535 19.6 63 05/23 03Z 57 50 303 7 0.00 0.00 567 575 17.1 -9.6 1009.5 0 CLR CLR CLR 64 57 15.1 0.0 0.555 19.5 66 05/23 06Z 53 50 327 3 0.00 0.00 567 576 17.5 -9.5 1010.7 0 CLR CLR CLR 64 53 13.4 0.0 0.550 17.1 69 05/23 09Z 52 49 309 1 0.00 0.00 566 575 17.1 -9.5 1010.8 6 CLR CLR 390FEW402 53 52 14.1 0.0 0.544 15.0 72 05/23 12Z 51 48 162 2 0.00 0.00 565 575 16.8 -10.0 1011.6 2 CLR CLR 402FEW416 53 51 15.1 0.0 0.553 13.3 75 05/23 15Z 55 48 170 3 0.00 0.00 565 576 15.8 -10.2 1013.2 3 CLR CLR 444FEW354 56 50 15.0 0.0 0.595 12.6 78 05/23 18Z 65 49 286 2 0.00 0.00 566 577 15.9 -10.2 1013.5 2 CLR CLR 442FEW423 65 50 15.0 0.0 0.587 12.2 81 05/23 21Z 67 50 286 9 0.00 0.00 566 578 16.5 -10.4 1013.2 2 CLR CLR 385FEW402 68 65 15.0 0.0 0.530 15.4 84 05/24 00Z 64 49 279 10 0.00 0.00 566 578 16.4 -10.5 1013.4 3 CLR CLR 401FEW418 69 63 15.0 0.0 0.435 16.5 87 05/24 03Z 55 49 297 8 0.00 0.00 566 578 16.7 -10.7 1014.2 0 CLR CLR 432FEW444 64 55 15.0 0.0 0.437 17.6 90 05/24 06Z 52 48 289 5 0.00 0.00 565 578 16.7 -11.0 1016.0 2 CLR CLR 423FEW439 64 52 13.4 0.0 0.467 15.0 93 05/24 09Z 50 47 264 3 0.00 0.00 564 578 16.1 -11.2 1016.1 13 FEW CLR 376FEW431 51 50 15.0 0.0 0.468 13.4 96 05/24 12Z 50 47 257 3 0.00 0.00 564 577 15.4 -10.5 1016.1 51 012FEW016 CLR 362SCT423 52 49 15.0 0.0 0.457 12.9 99 05/24 15Z 54 47 263 3 0.00 0.00 564 578 15.4 -10.3 1016.7 89 012SCT020 CLR 351BKN419 54 49 15.0 0.0 0.433 13.8 102 05/24 18Z 61 48 282 5 0.00 0.00 564 578 15.1 -10.6 1016.8 55 012SCT019 CLR 350SCT418 61 49 15.0 0.0 0.425 12.6 105 05/24 21Z 62 48 288 10 0.00 0.00 565 579 15.2 -10.9 1016.4 26 CLR CLR 340FEW408 63 61 15.0 0.0 0.419 14.5 108 05/25 00Z 61 48 288 9 0.00 0.00 565 578 15.5 -10.6 1015.0 18 CLR CLR 340FEW407 63 60 15.0 0.0 0.378 17.0 111 05/25 03Z 54 48 287 7 0.00 0.00 565 578 15.9 -10.8 1015.1 51 CLR CLR 368SCT406 61 54 15.0 0.0 0.366 16.8 114 05/25 06Z 51 48 256 2 0.00 0.00 565 578 15.8 -10.8 1015.8 45 012FEW015 CLR 361SCT400 61 51 13.5 0.0 0.375 16.3 117 05/25 09Z 50 47 269 3 0.00 0.00 565 577 16.2 -11.3 1014.5 24 010FEW013 CLR 331FEW381 51 50 14.1 0.0 0.371 15.8 120 05/25 12Z 49 46 243 2 0.00 0.00 565 576 15.8 -10.8 1013.9 12 008FEW014 CLR 333FEW382 51 49 15.0 0.0 0.384 15.8 123 05/25 15Z 53 47 211 2 0.00 0.00 565 576 15.8 -10.9 1013.8 23 008FEW015 CLR 366FEW382 53 48 15.0 0.0 0.415 14.9 126 05/25 18Z 63 49 264 3 0.00 0.00 565 576 15.4 -10.2 1012.9 24 008FEW015 CLR 348FEW369 63 48 15.0 0.0 0.444 15.0 129 05/25 21Z 64 47 280 9 0.00 0.00 567 577 15.6 -9.7 1012.0 40 CLR CLR 321SCT382 65 62 15.0 0.0 0.433 15.1 132 05/26 00Z 59 46 261 9 0.00 0.00 567 577 16.1 -8.9 1011.1 66 CLR 219FEW238 317BKN394 65 58 15.0 0.0 0.490 15.0 135 05/26 03Z 55 49 248 9 0.00 0.00 568 577 14.8 -8.1 1010.6 100 CLR CLR 319OVC412 59 55 15.0 0.0 0.799 15.8 138 05/26 06Z 53 51 250 9 0.00 0.00 568 577 13.5 -8.4 1010.7 83 006FEW013 CLR 319BKN392 59 52 14.6 0.0 0.987 14.2 141 05/26 09Z 52 49 262 12 0.00 0.00 568 576 13.6 -7.9 1010.0 99 004OVC017 CLR 376FEW412 53 52 14.8 0.0 0.608 9.9 144 05/26 12Z 52 47 246 13 0.01 0.00 567 575 13.2 -8.6 1009.7 99 000OVC021 CLR 364FEW417 53 52 15.0 0.0 0.499 7.0 147 05/26 15Z 52 47 226 9 0.00 0.00 567 575 12.4 -9.1 1010.0 100 -RA 000OVC028 CLR 358FEW391 52 52 15.0 0.0 0.514 6.0 150 05/26 18Z 57 46 231 4 0.00 0.00 567 575 11.9 -8.4 1009.5 94 000BKN029 CLR 361FEW396 57 51 15.0 0.0 0.605 7.0 153 05/26 21Z 65 48 279 5 0.00 0.00 568 575 11.3 -7.8 1007.4 8 023FEW029 CLR CLR 66 57 15.0 0.0 0.649 12.7 156 05/27 00Z 62 49 290 10 0.00 0.00 569 575 12.1 -7.0 1006.5 4 022FEW029 CLR CLR 67 57 15.2 0.0 0.665 15.3 159 05/27 03Z 56 48 270 4 0.00 0.00 569 575 14.1 -6.9 1006.8 0 CLR CLR CLR 62 56 15.1 0.0 0.635 14.7 162 05/27 06Z 53 47 231 2 0.00 0.00 568 574 15.6 -6.5 1007.1 0 CLR CLR CLR 62 53 15.0 0.0 0.644 16.9 165 05/27 09Z 52 47 222 2 0.00 0.00 569 574 16.5 -6.4 1006.6 0 CLR CLR CLR 53 52 15.0 0.0 0.567 17.6 168 05/27 12Z 51 47 218 2 0.00 0.00 568 574 16.5 -6.9 1007.1 0 CLR CLR CLR 53 51 15.0 0.0 0.491 17.6