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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 770 725
  171 Union City 460 459
Amador 227 Plymouth 847 823
Butte 244 Biggs 684 665
  012 Durham 831 768
Colusa 250 Williams 668 645
Contra Costa 047 Brentwood 562 552
  170 Concord 648 629
  213 El Cerrito 123 123
  178 Moraga 859 804
El Dorado 013 Camino 843 827
  228 Diamond Springs 791 776
Fresno 205 Coalinga 593 583
  007 Firebaugh/Telles 612 601
  190 Five Points South West 0 0
  002 FivePoints/WSFS USDA 747 694
  080 Fresno State 754 707
  142 Orange Cove 0 0
  124 Panoche 673 637
  039 Parlier 787 748
  105 Westlands 806 744
Imperial 041 Calipatria/Mulberry 578 560
  087 Meloland 316 313
  175 Palo Verde II 588 567
  128 Salton Sea East 0 0
  127 Salton Sea West 0 0
  068 Seeley 326 317
  201 UC-Andrade 0 0
  186 UC-San Luis 0 0
  181 Westmorland North 521 508
Inyo 035 Bishop 1788 980
  183 Owens Lake North 1511 1337
  189 Owens Lake South 1662 1114
Kern 125 Arvin-Edison 687 662
  146 Belridge 687 659
  054 Blackwells Corner 0 0
  005 Shafter/USDA 741 693
Kings 021 Kettleman 0 0
  015 Stratford 769 728
Lassen 057 Buntingville 0 0
Los Angeles 216 Arleta 233 233
  215 Chatsworth 122 122
  133 Glendale 0 0
  174 Long Beach 278 278
  159 Monrovia 157 157
  197 Palmdale 1272 947
  220 Palmdale Central 1057 962
  078 Pomona 281 278
  204 Santa Clarita 616 507
  099 Santa Monica 53 53
  219 West Hills 237 237
Madera 145 Madera 0 0
  188 Madera II 0 0
Marin 187 Black Point 660 607
  157 Point San Pedro 474 474
Mendocino 085 Hopland FS 0 0
  106 Sanel Valley 902 792
Merced 092 Kesterson 0 0
  056 Los Banos 0 0
  148 Merced 902 770
Modoc 090 Alturas 2305 1343
Monterey 114 Arroyo Seco 457 453
  210 Carmel 523 523
  019 Castroville 0 0
  113 King City-Oasis Rd. 800 759
  193 Pacific Grove 57 57
  129 Pajaro 515 504
  116 Salinas North 421 421
  214 Salinas South II 403 403
Napa 109 Carneros 0 0
  077 Oakville 730 714
Orange 245 Coto de Caza 279 279
  075 Irvine 126 126
  241 San Clemente 234 234
Placer 195 Auburn 683 678
Plumas 264 Sierra Valley Center 2409 1275
Riverside 135 Blythe NE 606 581
  118 Cathedral City 0 0
  239 Hemet 310 307
  200 Indio 2 146 146
  208 La Quinta II 173 173
  238 Moreno Valley 0 0
  136 Oasis 98 98
  240 Perris 384 381
  151 Ripley 411 397
  062 Temecula 102 102
  237 Temecula East III 340 340
  218 Thermal South 355 350
  044 U.C. Riverside 192 192
  179 Winchester 782 729
Sacramento 131 Fair Oaks 641 631
  140 Twitchell Island 469 469
San Benito 126 San Benito 657 647
  143 San Juan Valley 684 669
San Bernardino 134 Barstow NE 0 0
  199 Big Bear Lake 1355 969
  233 Joshua Tree 1024 969
  192 Lake Arrowhead 2106 1182
  234 Newberry Springs II 0 0
  117 Victorville 1030 936
San Diego 207 Borrego Springs 526 517
  153 Escondido SPV 304 303
  150 Miramar 137 137
  147 Otay Lake 160 160
  184 San Diego II 33 33
  173 Torrey Pines 11 11
San Joaquin 166 Lodi West 0 0
  070 Manteca 687 657
  167 Tracy 0 0
San Luis Obispo 163 Atascadero 893 780
  202 Nipomo 155 155
  052 San Luis Obispo 231 231
  160 San Luis Obispo West 392 392
Santa Barbara 088 Cuyama 1157 1021
  094 Goleta Foothills 0 0
  231 Lompoc 108 108
  107 Santa Barbara 108 108
  230 Santa Barbara II 0 0
  232 Santa Maria II 315 315
  064 Santa Ynez 834 663
  165 Sisquoc 517 511
Santa Clara 211 Gilroy 679 655
Santa Cruz 104 De Laveaga 427 427
  209 Watsonville West II 247 247
Shasta 043 McArthur 2319 1467
  224 Shasta College 1024 848
Siskiyou 236 Macdoel II 2357 1271
  225 Scott Valley 2165 1413
  091 Tulelake FS 2359 1366
Solano 121 Dixon 0 0
  212 Hastings Tract East 773 734
  139 Winters 597 581
Sonoma 158 Bennett Valley 840 776
  144 Petaluma East 679 641
  083 Santa Rosa 777 692
  103 Windsor 742 679
Stanislaus 206 Denair 762 723
  071 Modesto 868 795
  194 Oakdale 768 738
  161 Patterson 0 0
Sutter 235 Verona 763 709
Tehama 008 Gerber 0 0
  222 Gerber South 838 799
Tulare 203 Alpaugh 0 0
  182 Delano 780 735
  086 Lindcove 0 0
  169 Porterville 0 0
Ventura 152 Camarillo 241 241
  217 Moorpark 211 211
  156 Oxnard 0 0
  198 Santa Paula 0 0
Yolo 155 Bryte 0 0
  006 Davis 607 600
  196 Esparto 0 0
  226 Woodland 562 558
Yuba 084 Browns Valley 402 402