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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 1007 954
  171 Union City 709 695
Amador 227 Plymouth 1155 1098
Butte 244 Biggs 1016 973
  012 Durham 1120 1038
Colusa 250 Williams 1028 983
Contra Costa 047 Brentwood 892 871
  170 Concord 964 914
  213 El Cerrito 396 396
  178 Moraga 1128 1019
El Dorado 013 Camino 1066 962
  228 Diamond Springs 910 885
Fresno 205 Coalinga 767 758
  007 Firebaugh/Telles 959 919
  190 Five Points South West 0 0
  002 FivePoints/WSFS USDA 1095 1026
  080 Fresno State 1140 1052
  142 Orange Cove 973 953
  124 Panoche 1014 974
  039 Parlier 1129 1096
  105 Westlands 1140 998
Imperial 041 Calipatria/Mulberry 577 538
  087 Meloland 410 404
  175 Palo Verde II 618 559
  128 Salton Sea East 0 0
  127 Salton Sea West 0 0
  068 Seeley 406 382
  201 UC-Andrade 0 0
  186 UC-San Luis 0 0
  181 Westmorland North 478 465
Inyo 035 Bishop 1886 902
  183 Owens Lake North 1723 1180
  189 Owens Lake South 1827 983
Kern 125 Arvin-Edison 953 924
  146 Belridge 1016 960
  054 Blackwells Corner 0 0
  005 Shafter/USDA 934 927
Kings 021 Kettleman 0 0
  015 Stratford 1116 1035
Lassen 057 Buntingville 0 0
Los Angeles 216 Arleta 339 339
  215 Chatsworth 181 181
  133 Glendale 0 0
  174 Long Beach 403 403
  159 Monrovia 313 313
  197 Palmdale 1390 980
  220 Palmdale Central 1102 928
  078 Pomona 463 463
  204 Santa Clarita 355 353
  099 Santa Monica 56 56
  219 West Hills 277 277
Madera 145 Madera 0 0
  188 Madera II 0 0
Marin 187 Black Point 994 954
  157 Point San Pedro 833 812
Mendocino 085 Hopland FS 0 0
  106 Sanel Valley 1279 1078
Merced 092 Kesterson 1067 1005
  056 Los Banos 1067 1005
  148 Merced 1309 1091
Modoc 090 Alturas 2355 979
Monterey 114 Arroyo Seco 716 702
  210 Carmel 641 637
  019 Castroville 0 0
  113 King City-Oasis Rd. 1028 940
  193 Pacific Grove 253 253
  129 Pajaro 651 642
  116 Salinas North 320 320
  214 Salinas South II 608 606
Napa 109 Carneros 987 941
  077 Oakville 970 921
Orange 245 Coto de Caza 362 362
  075 Irvine 178 178
  241 San Clemente 375 375
Placer 195 Auburn 808 796
Plumas 264 Sierra Valley Center 2475 939
Riverside 135 Blythe NE 619 584
  118 Cathedral City 0 0
  239 Hemet 436 430
  200 Indio 2 246 244
  208 La Quinta II 155 155
  238 Moreno Valley 0 0
  136 Oasis 174 174
  240 Perris 697 673
  151 Ripley 541 518
  062 Temecula 149 149
  237 Temecula East III 364 361
  218 Thermal South 485 465
  044 U.C. Riverside 334 334
  179 Winchester 842 777
Sacramento 131 Fair Oaks 920 896
  140 Twitchell Island 880 855
San Benito 126 San Benito 892 861
  143 San Juan Valley 994 912
San Bernardino 134 Barstow NE 0 0
  199 Big Bear Lake 1912 877
  233 Joshua Tree 962 761
  192 Lake Arrowhead 2097 1182
  234 Newberry Springs II 0 0
  117 Victorville 1173 977
San Diego 207 Borrego Springs 536 501
  153 Escondido SPV 521 496
  150 Miramar 281 281
  147 Otay Lake 277 277
  184 San Diego II 199 199
  173 Torrey Pines 31 31
San Joaquin 166 Lodi West 0 0
  070 Manteca 1054 999
  167 Tracy 0 0
San Luis Obispo 163 Atascadero 1222 940
  202 Nipomo 338 338
  052 San Luis Obispo 417 415
  160 San Luis Obispo West 586 580
Santa Barbara 088 Cuyama 1371 1193
  094 Goleta Foothills 0 0
  231 Lompoc 885 830
  107 Santa Barbara 51 51
  230 Santa Barbara II 0 0
  232 Santa Maria II 509 505
  064 Santa Ynez 970 837
  165 Sisquoc 902 794
Santa Clara 211 Gilroy 914 827
Santa Cruz 104 De Laveaga 619 613
  209 Watsonville West II 384 384
Shasta 043 McArthur 1057 581
  224 Shasta College 1170 981
Siskiyou 236 Macdoel II 2392 888
  225 Scott Valley 2291 1031
  091 Tulelake FS 2390 971
Solano 121 Dixon 0 0
  212 Hastings Tract East 1130 1072
  139 Winters 977 926
Sonoma 158 Bennett Valley 1183 1069
  144 Petaluma East 1097 1017
  083 Santa Rosa 1176 1032
  103 Windsor 1127 1034
Stanislaus 206 Denair 1097 1063
  071 Modesto 1126 1005
  194 Oakdale 1080 1047
  161 Patterson 0 0
Sutter 235 Verona 1179 1089
Tehama 008 Gerber 0 0
  222 Gerber South 1117 1026
Tulare 203 Alpaugh 0 0
  182 Delano 1113 1080
  086 Lindcove 0 0
  169 Porterville 1157 1092
Ventura 152 Camarillo 352 352
  217 Moorpark 214 214
  156 Oxnard 0 0
  198 Santa Paula 498 494
Yolo 155 Bryte 817 810
  006 Davis 921 911
  196 Esparto 0 0
  226 Woodland 932 914
Yuba 084 Browns Valley 733 727