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Calculators

Cumulative Chilling Hours:
Cumulative Chill Hours and
Modified Chill Hours
Hours below 45° F
Hours between 32 F and 45° F
November 1 through February 28/29.

Cumulative Chilling Portions:
Dynamic Model
September 1 through August 31

Chilling Hour & Unit Accumulations:
Historic Accumulation of
Chill Hours, Modified Chill Hours,
& Chill Units (Utah Model)

Hours below 45° F
Hours between 32° F and 45° F
September 1 through August 31

Harvest Prediction Model:
for Peaches, Plums and Nectarines

Cumulative Chilling Hours - Select Station from List

County Station Hours < 45°F Hours >32° and <45°F
Alameda 191 Pleasanton 538 527
  171 Union City 497 488
Amador 227 Plymouth 762 743
Butte 244 Biggs 617 611
  012 Durham 697 661
Colusa 250 Williams 680 664
Contra Costa 047 Brentwood 225 225
  170 Concord 788 668
  213 El Cerrito 194 194
  178 Moraga 661 601
El Dorado 013 Camino 692 682
  228 Diamond Springs 614 614
Fresno 205 Coalinga 399 399
  007 Firebaugh/Telles 507 499
  190 Five Points South West 289 287
  002 FivePoints/WSFS USDA 622 592
  080 Fresno State 653 615
  142 Orange Cove 584 581
  124 Panoche 813 650
  039 Parlier 655 643
  105 Westlands 629 521
Imperial 041 Calipatria/Mulberry 345 338
  087 Meloland 285 280
  175 Palo Verde II 483 456
  128 Salton Sea East 0 0
  127 Salton Sea West 0 0
  068 Seeley 314 312
  201 UC-Andrade 0 0
  186 UC-San Luis 0 0
  181 Westmorland North 465 338
Inyo 035 Bishop 1213 728
  183 Owens Lake North 1197 968
  189 Owens Lake South 1258 841
Kern 125 Arvin-Edison 478 471
  146 Belridge 630 522
  054 Blackwells Corner 714 676
  005 Shafter/USDA 553 544
Kings 021 Kettleman 0 0
  015 Stratford 550 548
Lassen 057 Buntingville 1492 714
Los Angeles 216 Arleta 431 335
  215 Chatsworth 431 335
  133 Glendale 0 0
  174 Long Beach 247 247
  159 Monrovia 154 154
  197 Palmdale 961 788
  220 Palmdale Central 875 751
  078 Pomona 267 267
  204 Santa Clarita 346 346
  099 Santa Monica 18 18
  219 West Hills 114 18
Madera 145 Madera 0 0
  188 Madera II 0 0
Marin 187 Black Point 523 478
  157 Point San Pedro 434 427
Mendocino 085 Hopland FS 0 0
  106 Sanel Valley 695 598
Merced 092 Kesterson 700 626
  056 Los Banos 778 670
  148 Merced 787 708
Modoc 090 Alturas 1539 734
Monterey 114 Arroyo Seco 478 478
  210 Carmel 399 399
  019 Castroville 31 31
  113 King City-Oasis Rd. 558 548
  193 Pacific Grove 71 71
  129 Pajaro 339 339
  116 Salinas North 210 210
  214 Salinas South II 268 268
Napa 109 Carneros 654 534
  077 Oakville 613 588
Orange 245 Coto de Caza 253 253
  075 Irvine 72 72
  241 San Clemente 211 211
Placer 195 Auburn 461 461
Riverside 135 Blythe NE 409 400
  118 Cathedral City 0 0
  239 Hemet 414 414
  200 Indio 2 202 202
  208 La Quinta II 753 645
  238 Moreno Valley 0 0
  136 Oasis 4 4
  240 Perris 714 669
  151 Ripley 424 417
  062 Temecula 126 126
  237 Temecula East III 277 277
  218 Thermal South 782 664
  044 U.C. Riverside 211 211
  179 Winchester 588 562
Sacramento 131 Fair Oaks 457 452
  140 Twitchell Island 460 460
San Benito 126 San Benito 481 472
  143 San Juan Valley 597 580
San Bernardino 134 Barstow NE 0 0
  199 Big Bear Lake 1308 704
  233 Joshua Tree 705 616
  192 Lake Arrowhead 1403 755
  234 Newberry Springs II 781 728
  117 Victorville 603 495
San Diego 207 Borrego Springs 21 21
  153 Escondido SPV 302 302
  150 Miramar 132 132
  147 Otay Lake 121 121
  184 San Diego II 27 27
  173 Torrey Pines 48 14
San Joaquin 166 Lodi West 0 0
  070 Manteca 642 633
  167 Tracy 0 0
San Luis Obispo 163 Atascadero 692 633
  202 Nipomo 164 164
  052 San Luis Obispo 216 216
  160 San Luis Obispo West 302 302
Santa Barbara 088 Cuyama 893 825
  094 Goleta Foothills 0 0
  231 Lompoc 253 250
  107 Santa Barbara 48 48
  230 Santa Barbara II 0 0
  232 Santa Maria II 217 217
  064 Santa Ynez 597 525
  165 Sisquoc 399 399
Santa Clara 211 Gilroy 539 528
Santa Cruz 104 De Laveaga 343 343
  209 Watsonville West II 228 228
Shasta 043 McArthur 1543 931
  224 Shasta College 778 701
Siskiyou 236 Macdoel II 1542 670
  225 Scott Valley 1454 881
  091 Tulelake FS 1588 771
Solano 121 Dixon 578 563
  212 Hastings Tract East 667 653
  139 Winters 537 527
Sonoma 158 Bennett Valley 680 613
  144 Petaluma East 537 500
  083 Santa Rosa 621 533
  103 Windsor 625 570
Stanislaus 206 Denair 592 589
  071 Modesto 557 550
  194 Oakdale 451 451
  161 Patterson 0 0
Sutter 235 Verona 738 720
Tehama 008 Gerber 0 0
  222 Gerber South 688 657
Tulare 203 Alpaugh 0 0
  182 Delano 628 621
  086 Lindcove 727 725
  169 Porterville 973 826
Ventura 152 Camarillo 199 199
  217 Moorpark 158 158
  156 Oxnard 0 0
  198 Santa Paula 215 215
Yolo 155 Bryte 420 420
  006 Davis 535 530
  196 Esparto 0 0
  226 Woodland 529 524
Yuba 084 Browns Valley 359 359