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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 853 790
  171 Union City 648 634
Amador 227 Plymouth 1107 1072
Butte 244 Biggs 913 894
  012 Durham 1016 888
Colusa 250 Williams 930 848
Contra Costa 047 Brentwood 790 782
  170 Concord 827 770
  213 El Cerrito 364 364
  178 Moraga 955 811
El Dorado 013 Camino 1283 1260
  228 Diamond Springs 1081 1074
Fresno 205 Coalinga 813 807
  007 Firebaugh/Telles 895 866
  190 Five Points South West 0 0
  002 FivePoints/WSFS USDA 1003 919
  080 Fresno State 909 876
  142 Orange Cove 634 626
  124 Panoche 892 849
  039 Parlier 1023 982
  105 Westlands 959 882
Imperial 041 Calipatria/Mulberry 527 512
  087 Meloland 397 397
  175 Palo Verde II 484 478
  128 Salton Sea East 0 0
  127 Salton Sea West 0 0
  068 Seeley 420 415
  201 UC-Andrade 0 0
  186 UC-San Luis 0 0
  181 Westmorland North 429 423
Inyo 035 Bishop 1663 884
  183 Owens Lake North 1447 1107
  189 Owens Lake South 1466 820
Kern 125 Arvin-Edison 879 848
  146 Belridge 956 903
  054 Blackwells Corner 0 0
  005 Shafter/USDA 986 952
Kings 021 Kettleman 0 0
  015 Stratford 998 933
Lassen 057 Buntingville 0 0
Los Angeles 216 Arleta 290 290
  215 Chatsworth 193 193
  133 Glendale 0 0
  174 Long Beach 443 443
  159 Monrovia 338 338
  197 Palmdale 1077 725
  220 Palmdale Central 658 573
  078 Pomona 417 417
  204 Santa Clarita 424 424
  099 Santa Monica 29 29
  219 West Hills 336 336
Madera 145 Madera 0 0
  188 Madera II 0 0
Marin 187 Black Point 819 708
  157 Point San Pedro 755 724
Mendocino 085 Hopland FS 0 0
  106 Sanel Valley 1070 801
Merced 092 Kesterson 0 0
  056 Los Banos 0 0
  148 Merced 1037 831
Modoc 090 Alturas 2145 896
Monterey 114 Arroyo Seco 658 657
  210 Carmel 396 396
  019 Castroville 0 0
  113 King City-Oasis Rd. 898 831
  193 Pacific Grove 298 298
  129 Pajaro 611 609
  116 Salinas North 587 587
  214 Salinas South II 599 599
Napa 109 Carneros 0 0
  077 Oakville 903 838
Orange 245 Coto de Caza 375 375
  075 Irvine 215 215
  241 San Clemente 377 377
Placer 195 Auburn 911 899
Plumas 264 Sierra Valley Center 2142 662
Riverside 135 Blythe NE 606 580
  118 Cathedral City 0 0
  239 Hemet 436 436
  200 Indio 2 262 260
  208 La Quinta II 213 212
  238 Moreno Valley 0 0
  136 Oasis 98 98
  240 Perris 582 575
  151 Ripley 448 444
  062 Temecula 116 116
  237 Temecula East III 409 409
  218 Thermal South 286 285
  044 U.C. Riverside 335 335
  179 Winchester 748 720
Sacramento 131 Fair Oaks 837 825
  140 Twitchell Island 832 811
San Benito 126 San Benito 749 731
  143 San Juan Valley 732 720
San Bernardino 134 Barstow NE 0 0
  199 Big Bear Lake 1882 793
  233 Joshua Tree 925 788
  192 Lake Arrowhead 1848 1084
  234 Newberry Springs II 0 0
  117 Victorville 829 664
San Diego 207 Borrego Springs 512 495
  153 Escondido SPV 339 339
  150 Miramar 246 246
  147 Otay Lake 238 238
  184 San Diego II 241 241
  173 Torrey Pines 2 2
San Joaquin 166 Lodi West 0 0
  070 Manteca 923 854
  167 Tracy 0 0
San Luis Obispo 163 Atascadero 605 501
  202 Nipomo 341 341
  052 San Luis Obispo 360 360
  160 San Luis Obispo West 506 506
Santa Barbara 088 Cuyama 1057 927
  094 Goleta Foothills 0 0
  231 Lompoc 621 600
  107 Santa Barbara 271 271
  230 Santa Barbara II 0 0
  232 Santa Maria II 437 437
  064 Santa Ynez 774 647
  165 Sisquoc 653 646
Santa Clara 211 Gilroy 723 674
Santa Cruz 104 De Laveaga 614 614
  209 Watsonville West II 399 399
Shasta 043 McArthur 2073 1068
  224 Shasta College 989 803
Siskiyou 236 Macdoel II 2114 805
  225 Scott Valley 1970 921
  091 Tulelake FS 2123 920
Solano 121 Dixon 0 0
  212 Hastings Tract East 1015 932
  139 Winters 888 822
Sonoma 158 Bennett Valley 1020 873
  144 Petaluma East 945 808
  083 Santa Rosa 968 768
  103 Windsor 959 774
Stanislaus 206 Denair 945 901
  071 Modesto 1065 917
  194 Oakdale 987 935
  161 Patterson 0 0
Sutter 235 Verona 993 887
Tehama 008 Gerber 0 0
  222 Gerber South 975 894
Tulare 203 Alpaugh 0 0
  182 Delano 1015 988
  086 Lindcove 0 0
  169 Porterville 986 932
Ventura 152 Camarillo 343 343
  217 Moorpark 198 198
  156 Oxnard 0 0
  198 Santa Paula 422 422
Yolo 155 Bryte 0 0
  006 Davis 873 846
  196 Esparto 0 0
  226 Woodland 789 773
Yuba 084 Browns Valley 726 726