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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 855 834
  171 Union City 789 776
Amador 227 Plymouth 1197 1157
Butte 244 Biggs 900 894
  012 Durham 1026 987
Colusa 250 Williams 994 977
Contra Costa 047 Brentwood 376 376
  170 Concord 1295 1117
  213 El Cerrito 266 266
  178 Moraga 1042 971
El Dorado 013 Camino 899 888
  228 Diamond Springs 879 875
Fresno 205 Coalinga 687 681
  007 Firebaugh/Telles 825 808
  190 Five Points South West 289 287
  002 FivePoints/WSFS USDA 1006 961
  080 Fresno State 1054 981
  142 Orange Cove 967 942
  124 Panoche 1177 1004
  039 Parlier 1035 1007
  105 Westlands 1021 867
Imperial 041 Calipatria/Mulberry 549 542
  087 Meloland 495 489
  175 Palo Verde II 735 705
  128 Salton Sea East 0 0
  127 Salton Sea West 0 0
  068 Seeley 461 458
  201 UC-Andrade 0 0
  186 UC-San Luis 0 0
  181 Westmorland North 666 539
Inyo 035 Bishop 1826 1047
  183 Owens Lake North 1751 1442
  189 Owens Lake South 1893 1225
Kern 125 Arvin-Edison 831 802
  146 Belridge 978 850
  054 Blackwells Corner 1136 1067
  005 Shafter/USDA 885 864
Kings 021 Kettleman 0 0
  015 Stratford 938 917
Lassen 057 Buntingville 2282 1096
Los Angeles 216 Arleta 576 480
  215 Chatsworth 576 480
  133 Glendale 0 0
  174 Long Beach 418 418
  159 Monrovia 237 237
  197 Palmdale 1357 1113
  220 Palmdale Central 1252 1093
  078 Pomona 395 395
  204 Santa Clarita 480 480
  099 Santa Monica 24 24
  219 West Hills 120 24
Madera 145 Madera 0 0
  188 Madera II 0 0
Marin 187 Black Point 851 799
  157 Point San Pedro 700 693
Mendocino 085 Hopland FS 0 0
  106 Sanel Valley 1131 989
Merced 092 Kesterson 1143 1042
  056 Los Banos 1130 1012
  148 Merced 1191 1099
Modoc 090 Alturas 2444 1192
Monterey 114 Arroyo Seco 784 771
  210 Carmel 666 661
  019 Castroville 31 31
  113 King City-Oasis Rd. 905 881
  193 Pacific Grove 132 132
  129 Pajaro 555 555
  116 Salinas North 359 358
  214 Salinas South II 477 476
Napa 109 Carneros 974 848
  077 Oakville 925 899
Orange 245 Coto de Caza 396 396
  075 Irvine 133 133
  241 San Clemente 350 350
Placer 195 Auburn 678 674
Riverside 135 Blythe NE 617 608
  118 Cathedral City 0 0
  239 Hemet 650 633
  200 Indio 2 283 283
  208 La Quinta II 849 724
  238 Moreno Valley 0 0
  136 Oasis 10 10
  240 Perris 1065 996
  151 Ripley 589 582
  062 Temecula 161 161
  237 Temecula East III 386 380
  218 Thermal South 895 755
  044 U.C. Riverside 299 299
  179 Winchester 923 869
Sacramento 131 Fair Oaks 685 676
  140 Twitchell Island 703 703
San Benito 126 San Benito 841 818
  143 San Juan Valley 994 960
San Bernardino 134 Barstow NE 0 0
  199 Big Bear Lake 2007 1143
  233 Joshua Tree 1178 1044
  192 Lake Arrowhead 2150 1150
  234 Newberry Springs II 1130 1055
  117 Victorville 1029 879
San Diego 207 Borrego Springs 30 30
  153 Escondido SPV 459 453
  150 Miramar 216 216
  147 Otay Lake 242 242
  184 San Diego II 51 51
  173 Torrey Pines 62 28
San Joaquin 166 Lodi West 0 0
  070 Manteca 1025 997
  167 Tracy 0 0
San Luis Obispo 163 Atascadero 1152 1015
  202 Nipomo 298 298
  052 San Luis Obispo 367 367
  160 San Luis Obispo West 531 525
Santa Barbara 088 Cuyama 1412 1273
  094 Goleta Foothills 0 0
  231 Lompoc 368 355
  107 Santa Barbara 67 67
  230 Santa Barbara II 0 0
  232 Santa Maria II 368 363
  064 Santa Ynez 969 861
  165 Sisquoc 632 627
Santa Clara 211 Gilroy 948 915
Santa Cruz 104 De Laveaga 568 568
  209 Watsonville West II 359 359
Shasta 043 McArthur 2365 1403
  224 Shasta College 1115 1014
Siskiyou 236 Macdoel II 2427 1052
  225 Scott Valley 2262 1296
  091 Tulelake FS 2476 1221
Solano 121 Dixon 891 875
  212 Hastings Tract East 1055 1035
  139 Winters 799 789
Sonoma 158 Bennett Valley 1093 1007
  144 Petaluma East 922 880
  083 Santa Rosa 1045 948
  103 Windsor 976 921
Stanislaus 206 Denair 987 973
  071 Modesto 977 960
  194 Oakdale 867 852
  161 Patterson 0 0
Sutter 235 Verona 1080 1059
Tehama 008 Gerber 0 0
  222 Gerber South 1016 983
Tulare 203 Alpaugh 0 0
  182 Delano 1013 989
  086 Lindcove 1171 1145
  169 Porterville 1531 1279
Ventura 152 Camarillo 342 342
  217 Moorpark 248 248
  156 Oxnard 0 0
  198 Santa Paula 398 398
Yolo 155 Bryte 634 634
  006 Davis 760 755
  196 Esparto 0 0
  226 Woodland 762 757
Yuba 084 Browns Valley 535 534