Napa County Seasonal GDD

(Data may contain errors, more accurate/complete data available on morning forecast)

Daily Data
as of 3/15/26 9:18 AM PDT
Date St. Helena-North Oakville-NE (Ranch 88) Suscol Lower (Ranch 35) Carneros Lower (Ranch 81)
11/15/25 - 3,127 - -
11/14/25 - 3,127 - -
11/13/25 - 3,127 - -
11/12/25 - 3,127 - -
11/11/25 - 3,127 - -
11/10/25 - 3,127 - -
11/9/25 - 3,127 - -
11/8/25 - 3,127 - -
11/7/25 - 3,127 - -
11/6/25 - 3,127 - -
11/5/25 - 3,127 - -
11/4/25 - 3,127 - -
11/3/25 - 3,127 - -
11/2/25 - 3,127 - -
11/1/25 - 3,127 - -
10/31/25 3,519 3,127 2,659 -
10/30/25 3,510 3,120 2,650 -
10/29/25 3,501 3,112 2,644 -
10/28/25 3,487 3,101 2,631 -
10/27/25 3,477 3,092 2,621 -
10/26/25 3,469 3,084 2,613 -
10/25/25 3,463 3,077 2,605 -
10/24/25 3,455 3,069 2,596 -
10/23/25 3,448 3,063 2,589 -
10/22/25 3,438 3,055 2,582 -
10/21/25 3,429 3,046 2,573 -
10/20/25 3,415 3,031 2,560 -
10/19/25 3,401 3,019 2,548 -
10/18/25 3,387 3,008 2,537 -
10/17/25 3,374 2,996 2,523 -
10/16/25 3,364 2,986 2,512 -
10/15/25 3,356 2,978 2,505 -
10/14/25 3,349 2,972 2,500 -
10/13/25 3,346 2,969 2,497 -
10/12/25 3,343 2,966 2,494 -
10/11/25 3,331 2,955 2,484 -
10/10/25 3,322 2,947 2,475 -
10/9/25 3,315 2,939 2,466 -
10/8/25 3,306 2,931 2,455 -
10/7/25 3,295 2,922 2,446 -
10/6/25 3,275 2,902 2,429 -
10/5/25 3,257 2,886 2,411 -
10/4/25 3,242 2,872 2,397 -
10/3/25 3,229 2,860 2,385 -
10/2/25 3,216 2,848 2,373 -
10/1/25 3,203 2,834 2,358 -
9/30/25 3,191 2,820 2,344 -
9/29/25 3,178 2,805 2,329 -
9/28/25 3,163 2,789 2,313 -
9/27/25 3,147 2,774 2,299 -
9/26/25 3,132 2,762 2,286 -
9/25/25 3,115 2,747 2,272 -
9/24/25 3,094 2,728 2,256 -
9/23/25 3,074 2,710 2,239 -
9/22/25 3,046 2,683 2,213 -
9/21/25 3,022 2,662 2,193 -
9/20/25 3,002 2,645 2,177 -
9/19/25 2,981 2,626 2,161 -
9/18/25 2,962 2,606 2,144 -
9/17/25 2,941 2,588 2,127 -
9/16/25 2,914 2,565 2,104 -
9/15/25 2,890 2,543 2,082 -
9/14/25 2,866 2,521 2,059 -
9/13/25 2,847 2,503 2,043 -
9/12/25 2,830 2,488 2,030 -
9/11/25 2,813 2,473 2,015 -
9/10/25 2,794 2,455 1,999 -
9/9/25 2,777 2,438 1,984 -
9/8/25 2,760 2,421 1,966 -
9/7/25 2,743 2,404 1,950 -
9/6/25 2,724 2,388 1,935 -
9/5/25 2,708 2,373 1,919 -
9/4/25 2,690 2,356 1,905 -
9/3/25 2,674 2,342 1,893 -
9/2/25 2,651 2,323 1,877 -
9/1/25 2,629 2,304 1,860 -
8/31/25 2,601 2,278 1,837 -
8/30/25 2,571 2,254 1,813 -
8/29/25 2,544 2,230 1,790 -
8/28/25 2,522 2,212 1,774 -
8/27/25 2,502 2,195 1,758 -
8/26/25 2,481 2,176 1,743 -
8/25/25 2,459 2,157 1,726 -
8/24/25 2,437 2,138 1,712 -
8/23/25 2,416 2,120 1,698 -
8/22/25 2,394 2,100 1,683 -
8/21/25 2,370 2,080 1,667 -
8/20/25 2,341 2,054 1,644 -
8/19/25 2,315 2,031 1,623 -
8/18/25 2,294 2,013 1,607 -
8/17/25 2,275 1,996 1,592 -
8/16/25 2,255 1,980 1,578 -
8/15/25 2,232 1,959 1,559 -
8/14/25 2,208 1,939 1,541 -
8/13/25 2,189 1,921 1,526 -
8/12/25 2,169 1,903 1,512 -
8/11/25 2,148 1,885 1,497 -
8/10/25 2,125 1,867 1,483 -
8/9/25 2,101 1,847 1,467 -
8/8/25 2,073 1,824 1,449 -
8/7/25 2,045 1,799 1,428 -
8/6/25 2,020 1,777 1,409 -
8/5/25 1,994 1,755 1,388 -
8/4/25 1,975 1,738 1,375 -
8/3/25 1,953 1,720 1,358 -
8/2/25 1,932 1,702 1,344 -
8/1/25 1,913 1,685 1,331 -
7/31/25 1,894 1,668 1,317 -
7/30/25 1,874 1,648 1,302 -
7/29/25 1,858 1,635 1,290 -
7/28/25 1,837 1,618 1,275 -
7/27/25 1,816 1,600 1,260 -
7/26/25 1,799 1,584 1,248 -
7/25/25 1,781 1,569 1,236 -
7/24/25 1,764 1,553 1,224 -
7/23/25 1,745 1,537 1,211 -
7/22/25 1,729 1,521 1,199 -
7/21/25 1,714 1,507 1,186 -
7/20/25 1,696 1,491 1,173 -
7/19/25 1,679 1,476 1,161 -
7/18/25 1,660 1,461 1,149 -
7/17/25 1,641 1,446 1,137 -
7/16/25 1,623 1,429 1,125 -
7/15/25 1,607 1,413 1,112 -
7/14/25 1,588 1,399 1,101 -
7/13/25 1,565 1,379 1,087 -
7/12/25 1,543 1,362 1,074 -
7/11/25 1,522 1,344 1,061 -
7/10/25 1,498 1,323 1,045 -
7/9/25 1,471 1,301 1,026 -
7/8/25 1,449 1,282 1,011 -
7/7/25 1,431 1,266 999 -
7/6/25 1,414 1,252 988 -
7/5/25 1,395 1,235 975 -
7/4/25 1,378 1,220 964 -
7/3/25 1,361 1,206 952 -
7/2/25 1,344 1,191 941 -
7/1/25 1,325 1,175 929 -
6/30/25 1,304 1,157 916 -
6/29/25 1,281 1,139 902 -
6/28/25 1,256 1,118 886 -
6/27/25 1,230 1,096 868 -
6/26/25 1,206 1,076 852 -
6/25/25 1,187 1,059 838 -
6/24/25 1,171 1,045 828 -
6/23/25 1,157 1,034 819 -
6/22/25 1,138 1,017 806 -
6/21/25 1,119 1,000 791 -
6/20/25 1,103 984 778 -
6/19/25 1,088 970 765 -
6/18/25 1,067 955 752 -
6/17/25 1,043 936 736 -
6/16/25 1,022 918 721 -
6/15/25 1,006 905 711 -
6/14/25 989 891 700 -
6/13/25 974 877 689 -
6/12/25 960 865 680 -
6/11/25 946 853 670 -
6/10/25 930 840 661 -
6/9/25 914 827 652 -
6/8/25 896 812 641 -
6/7/25 878 798 631 -
6/6/25 859 784 620 -
6/5/25 841 768 608 -
6/4/25 826 754 599 -
6/3/25 808 739 588 -
6/2/25 791 724 577 -
6/1/25 776 710 565 -
5/31/25 762 698 556 -
5/30/25 736 676 538 -
5/29/25 709 651 517 -
5/28/25 688 633 502 -
5/27/25 672 621 493 -
5/26/25 656 606 482 -
5/25/25 640 592 470 -
5/24/25 627 580 462 -
5/23/25 614 570 454 -
5/22/25 602 558 445 -
5/21/25 586 545 434 -
5/20/25 566 527 420 -
5/19/25 547 510 406 -
5/18/25 526 489 388 -
5/17/25 509 472 373 -
5/16/25 494 458 363 -
5/15/25 478 443 351 -
5/14/25 462 428 338 -
5/13/25 449 416 329 -
5/12/25 439 406 320 -
5/11/25 433 399 314 -
5/10/25 423 390 306 -
5/9/25 401 372 292 -
5/8/25 380 353 274 -
5/7/25 364 338 262 -
5/6/25 355 328 255 -
5/5/25 338 313 245 -
5/4/25 314 291 222 -
5/3/25 298 276 212 -
5/2/25 286 266 205 -
5/1/25 275 256 198 -
4/30/25 264 247 192 -
4/29/25 249 233 182 -
4/28/25 235 221 173 -
4/27/25 224 210 165 -
4/26/25 219 205 161 -
4/25/25 218 203 159 -
4/24/25 214 199 156 -
4/23/25 211 196 153 -
4/22/25 204 190 149 -
4/21/25 193 180 143 -
4/20/25 180 168 133 -
4/19/25 170 158 127 -
4/18/25 164 152 122 -
4/17/25 153 143 116 -
4/16/25 146 136 110 -
4/15/25 142 131 106 -
4/14/25 138 127 102 -
4/13/25 124 115 93 -
4/12/25 110 102 83 -
4/11/25 100 94 77 -
4/10/25 86 81 67 -
4/9/25 74 70 59 -
4/8/25 60 57 47 -
4/7/25 50 49 41 -
4/6/25 42 40 33 -
4/5/25 32 30 25 -
4/4/25 21 21 17 -
4/3/25 12 12 10 -
4/2/25 6 6 5 -
4/1/25 1 2 2 -