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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 1006 961
  171 Union City 803 799
Amador 227 Plymouth 1208 1195
Butte 244 Biggs 817 803
  012 Durham 1007 924
Colusa 250 Williams 999 909
Contra Costa 047 Brentwood 712 687
  170 Concord 914 894
  213 El Cerrito 207 207
  178 Moraga 1032 959
El Dorado 013 Camino 1059 1036
  228 Diamond Springs 1040 1034
Fresno 205 Coalinga 792 787
  007 Firebaugh/Telles 990 939
  190 Five Points South West 0 0
  002 FivePoints/WSFS USDA 980 885
  080 Fresno State 1031 1011
  142 Orange Cove 982 977
  124 Panoche 526 521
  039 Parlier 1128 1107
  105 Westlands 1094 954
Imperial 041 Calipatria/Mulberry 703 694
  087 Meloland 562 562
  175 Palo Verde II 746 719
  128 Salton Sea East 0 0
  127 Salton Sea West 0 0
  068 Seeley 549 548
  201 UC-Andrade 0 0
  186 UC-San Luis 0 0
  181 Westmorland North 687 687
Inyo 035 Bishop 1868 883
  183 Owens Lake North 1811 1351
  189 Owens Lake South 1860 1050
Kern 125 Arvin-Edison 882 866
  146 Belridge 1029 951
  054 Blackwells Corner 1081 1044
  005 Shafter/USDA 1008 960
Kings 021 Kettleman 0 0
  015 Stratford 1082 989
Lassen 057 Buntingville 2487 1240
Los Angeles 216 Arleta 283 283
  215 Chatsworth 234 234
  133 Glendale 0 0
  174 Long Beach 523 523
  159 Monrovia 221 221
  197 Palmdale 1407 1081
  220 Palmdale Central 1182 1018
  078 Pomona 597 593
  204 Santa Clarita 376 376
  099 Santa Monica 38 38
  219 West Hills 218 218
Madera 145 Madera 0 0
  188 Madera II 0 0
Marin 187 Black Point 991 903
  157 Point San Pedro 859 842
Mendocino 085 Hopland FS 0 0
  106 Sanel Valley 1269 1016
Merced 092 Kesterson 1281 1093
  056 Los Banos 1109 1057
  148 Merced 1358 1152
Modoc 090 Alturas 2552 1275
Monterey 114 Arroyo Seco 897 883
  210 Carmel 516 516
  019 Castroville 0 0
  113 King City-Oasis Rd. 1061 1008
  193 Pacific Grove 238 238
  129 Pajaro 830 820
  116 Salinas North 348 348
  214 Salinas South II 499 499
Napa 109 Carneros 1161 1048
  077 Oakville 1062 1043
Orange 245 Coto de Caza 495 484
  075 Irvine 122 122
  241 San Clemente 412 412
Placer 195 Auburn 859 859
Riverside 135 Blythe NE 729 718
  118 Cathedral City 0 0
  239 Hemet 536 536
  200 Indio 2 336 336
  208 La Quinta II 412 396
  238 Moreno Valley 0 0
  136 Oasis 138 138
  240 Perris 828 808
  151 Ripley 671 668
  062 Temecula 142 142
  237 Temecula East III 425 425
  218 Thermal South 755 738
  044 U.C. Riverside 308 308
  179 Winchester 1058 1009
Sacramento 131 Fair Oaks 936 932
  140 Twitchell Island 719 715
San Benito 126 San Benito 931 910
  143 San Juan Valley 1042 999
San Bernardino 134 Barstow NE 0 0
  199 Big Bear Lake 2201 744
  233 Joshua Tree 1133 992
  192 Lake Arrowhead 1415 804
  234 Newberry Springs II 1052 878
  117 Victorville 134 118
San Diego 207 Borrego Springs 696 688
  153 Escondido SPV 617 606
  150 Miramar 290 290
  147 Otay Lake 255 255
  184 San Diego II 30 30
  173 Torrey Pines 18 18
San Joaquin 166 Lodi West 0 0
  070 Manteca 1136 1052
  167 Tracy 0 0
San Luis Obispo 163 Atascadero 1158 923
  202 Nipomo 211 211
  052 San Luis Obispo 262 262
  160 San Luis Obispo West 498 496
Santa Barbara 088 Cuyama 1430 1292
  094 Goleta Foothills 0 0
  231 Lompoc 820 767
  107 Santa Barbara 97 97
  230 Santa Barbara II 0 0
  232 Santa Maria II 429 429
  064 Santa Ynez 1066 877
  165 Sisquoc 727 719
Santa Clara 211 Gilroy 909 851
Santa Cruz 104 De Laveaga 688 687
  209 Watsonville West II 422 422
Shasta 043 McArthur 2533 1399
  224 Shasta College 1271 1099
Siskiyou 236 Macdoel II 2506 1096
  225 Scott Valley 2429 1395
  091 Tulelake FS 2650 1280
Solano 121 Dixon 959 908
  212 Hastings Tract East 1087 1025
  139 Winters 798 767
Sonoma 158 Bennett Valley 1216 1130
  144 Petaluma East 1062 989
  083 Santa Rosa 1222 1002
  103 Windsor 1053 940
Stanislaus 206 Denair 1130 1090
  071 Modesto 1064 982
  194 Oakdale 1117 1087
  161 Patterson 0 0
Sutter 235 Verona 1143 1043
Tehama 008 Gerber 0 0
  222 Gerber South 1094 1043
Tulare 203 Alpaugh 0 0
  182 Delano 1157 1102
  086 Lindcove 270 264
  169 Porterville 1108 1011
Ventura 152 Camarillo 405 405
  217 Moorpark 282 282
  156 Oxnard 0 0
  198 Santa Paula 628 628
Yolo 155 Bryte 759 757
  006 Davis 745 730
  196 Esparto 0 0
  226 Woodland 664 659
Yuba 084 Browns Valley 666 664