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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 739 698
  171 Union City 554 554
Amador 227 Plymouth 807 800
Butte 244 Biggs 612 603
  012 Durham 755 686
Colusa 250 Williams 743 671
Contra Costa 047 Brentwood 580 555
  170 Concord 675 660
  213 El Cerrito 98 98
  178 Moraga 733 678
El Dorado 013 Camino 683 680
  228 Diamond Springs 624 624
Fresno 205 Coalinga 567 562
  007 Firebaugh/Telles 764 718
  190 Five Points South West 0 0
  002 FivePoints/WSFS USDA 718 631
  080 Fresno State 754 735
  142 Orange Cove 715 711
  124 Panoche 466 461
  039 Parlier 852 832
  105 Westlands 839 708
Imperial 041 Calipatria/Mulberry 497 488
  087 Meloland 431 431
  175 Palo Verde II 564 538
  128 Salton Sea East 0 0
  127 Salton Sea West 0 0
  068 Seeley 422 421
  201 UC-Andrade 0 0
  186 UC-San Luis 0 0
  181 Westmorland North 501 501
Inyo 035 Bishop 1299 545
  183 Owens Lake North 1277 903
  189 Owens Lake South 1321 678
Kern 125 Arvin-Edison 693 677
  146 Belridge 792 717
  054 Blackwells Corner 798 761
  005 Shafter/USDA 801 754
Kings 021 Kettleman 0 0
  015 Stratford 813 729
Lassen 057 Buntingville 1723 840
Los Angeles 216 Arleta 179 179
  215 Chatsworth 133 133
  133 Glendale 0 0
  174 Long Beach 379 379
  159 Monrovia 120 120
  197 Palmdale 1000 743
  220 Palmdale Central 826 695
  078 Pomona 340 340
  204 Santa Clarita 220 220
  099 Santa Monica 8 8
  219 West Hills 93 93
Madera 145 Madera 0 0
  188 Madera II 0 0
Marin 187 Black Point 742 668
  157 Point San Pedro 635 622
Mendocino 085 Hopland FS 0 0
  106 Sanel Valley 894 680
Merced 092 Kesterson 981 809
  056 Los Banos 865 816
  148 Merced 1028 850
Modoc 090 Alturas 1732 845
Monterey 114 Arroyo Seco 666 655
  210 Carmel 311 311
  019 Castroville 0 0
  113 King City-Oasis Rd. 762 713
  193 Pacific Grove 171 171
  129 Pajaro 543 540
  116 Salinas North 257 257
  214 Salinas South II 324 324
Napa 109 Carneros 824 727
  077 Oakville 753 746
Orange 245 Coto de Caza 263 263
  075 Irvine 61 61
  241 San Clemente 280 280
Placer 195 Auburn 568 568
Riverside 135 Blythe NE 532 521
  118 Cathedral City 0 0
  239 Hemet 234 234
  200 Indio 2 266 266
  208 La Quinta II 324 308
  238 Moreno Valley 0 0
  136 Oasis 99 99
  240 Perris 559 539
  151 Ripley 501 498
  062 Temecula 41 41
  237 Temecula East III 220 220
  218 Thermal South 576 560
  044 U.C. Riverside 163 163
  179 Winchester 717 675
Sacramento 131 Fair Oaks 694 693
  140 Twitchell Island 595 591
San Benito 126 San Benito 655 634
  143 San Juan Valley 732 695
San Bernardino 134 Barstow NE 0 0
  199 Big Bear Lake 1489 479
  233 Joshua Tree 822 698
  192 Lake Arrowhead 1005 586
  234 Newberry Springs II 720 569
  117 Victorville 96 88
San Diego 207 Borrego Springs 524 516
  153 Escondido SPV 423 412
  150 Miramar 178 178
  147 Otay Lake 135 135
  184 San Diego II 16 16
  173 Torrey Pines 1 1
San Joaquin 166 Lodi West 0 0
  070 Manteca 886 808
  167 Tracy 0 0
San Luis Obispo 163 Atascadero 812 621
  202 Nipomo 137 137
  052 San Luis Obispo 172 172
  160 San Luis Obispo West 341 341
Santa Barbara 088 Cuyama 985 867
  094 Goleta Foothills 0 0
  231 Lompoc 629 580
  107 Santa Barbara 52 52
  230 Santa Barbara II 0 0
  232 Santa Maria II 305 305
  064 Santa Ynez 797 628
  165 Sisquoc 513 507
Santa Clara 211 Gilroy 677 622
Santa Cruz 104 De Laveaga 431 431
  209 Watsonville West II 262 262
Shasta 043 McArthur 1751 966
  224 Shasta College 842 714
Siskiyou 236 Macdoel II 1693 707
  225 Scott Valley 1703 975
  091 Tulelake FS 1826 874
Solano 121 Dixon 712 669
  212 Hastings Tract East 811 757
  139 Winters 630 600
Sonoma 158 Bennett Valley 848 778
  144 Petaluma East 737 675
  083 Santa Rosa 850 670
  103 Windsor 778 682
Stanislaus 206 Denair 850 817
  071 Modesto 830 760
  194 Oakdale 857 832
  161 Patterson 0 0
Sutter 235 Verona 853 768
Tehama 008 Gerber 0 0
  222 Gerber South 784 744
Tulare 203 Alpaugh 0 0
  182 Delano 880 828
  086 Lindcove 270 264
  169 Porterville 816 722
Ventura 152 Camarillo 255 255
  217 Moorpark 190 190
  156 Oxnard 0 0
  198 Santa Paula 403 403
Yolo 155 Bryte 574 574
  006 Davis 587 577
  196 Esparto 0 0
  226 Woodland 524 521
Yuba 084 Browns Valley 453 451