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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 793 730
  171 Union City 606 595
Amador 227 Plymouth 1016 990
Butte 244 Biggs 847 828
  012 Durham 938 813
Colusa 250 Williams 857 775
Contra Costa 047 Brentwood 733 725
  170 Concord 763 709
  213 El Cerrito 314 314
  178 Moraga 880 747
El Dorado 013 Camino 1196 1173
  228 Diamond Springs 998 991
Fresno 205 Coalinga 744 739
  007 Firebaugh/Telles 822 795
  190 Five Points South West 0 0
  002 FivePoints/WSFS USDA 933 856
  080 Fresno State 837 810
  142 Orange Cove 634 626
  124 Panoche 821 784
  039 Parlier 947 908
  105 Westlands 889 818
Imperial 041 Calipatria/Mulberry 493 480
  087 Meloland 363 363
  175 Palo Verde II 451 445
  128 Salton Sea East 0 0
  127 Salton Sea West 0 0
  068 Seeley 392 387
  201 UC-Andrade 0 0
  186 UC-San Luis 0 0
  181 Westmorland North 397 392
Inyo 035 Bishop 1566 843
  183 Owens Lake North 1352 1043
  189 Owens Lake South 1369 763
Kern 125 Arvin-Edison 806 775
  146 Belridge 889 838
  054 Blackwells Corner 0 0
  005 Shafter/USDA 916 882
Kings 021 Kettleman 0 0
  015 Stratford 929 871
Lassen 057 Buntingville 0 0
Los Angeles 216 Arleta 271 271
  215 Chatsworth 176 176
  133 Glendale 0 0
  174 Long Beach 413 413
  159 Monrovia 307 307
  197 Palmdale 1000 672
  220 Palmdale Central 643 558
  078 Pomona 383 383
  204 Santa Clarita 389 389
  099 Santa Monica 29 29
  219 West Hills 316 316
Madera 145 Madera 0 0
  188 Madera II 0 0
Marin 187 Black Point 758 653
  157 Point San Pedro 696 677
Mendocino 085 Hopland FS 0 0
  106 Sanel Valley 992 755
Merced 092 Kesterson 0 0
  056 Los Banos 0 0
  148 Merced 962 768
Modoc 090 Alturas 2024 875
Monterey 114 Arroyo Seco 608 608
  210 Carmel 380 380
  019 Castroville 0 0
  113 King City-Oasis Rd. 824 763
  193 Pacific Grove 273 273
  129 Pajaro 565 563
  116 Salinas North 543 543
  214 Salinas South II 551 551
Napa 109 Carneros 0 0
  077 Oakville 836 774
Orange 245 Coto de Caza 357 357
  075 Irvine 208 208
  241 San Clemente 343 343
Placer 195 Auburn 822 821
Plumas 264 Sierra Valley Center 2023 662
Riverside 135 Blythe NE 568 544
  118 Cathedral City 0 0
  239 Hemet 396 396
  200 Indio 2 239 237
  208 La Quinta II 198 197
  238 Moreno Valley 0 0
  136 Oasis 90 90
  240 Perris 544 537
  151 Ripley 417 413
  062 Temecula 101 101
  237 Temecula East III 363 363
  218 Thermal South 271 270
  044 U.C. Riverside 313 313
  179 Winchester 696 674
Sacramento 131 Fair Oaks 772 765
  140 Twitchell Island 774 753
San Benito 126 San Benito 687 675
  143 San Juan Valley 675 663
San Bernardino 134 Barstow NE 0 0
  199 Big Bear Lake 1819 743
  233 Joshua Tree 862 726
  192 Lake Arrowhead 1740 1035
  234 Newberry Springs II 0 0
  117 Victorville 760 609
San Diego 207 Borrego Springs 470 453
  153 Escondido SPV 313 313
  150 Miramar 229 229
  147 Otay Lake 215 215
  184 San Diego II 229 229
  173 Torrey Pines 2 2
San Joaquin 166 Lodi West 0 0
  070 Manteca 856 794
  167 Tracy 0 0
San Luis Obispo 163 Atascadero 586 482
  202 Nipomo 322 322
  052 San Luis Obispo 341 341
  160 San Luis Obispo West 469 469
Santa Barbara 088 Cuyama 986 862
  094 Goleta Foothills 0 0
  231 Lompoc 599 578
  107 Santa Barbara 255 255
  230 Santa Barbara II 0 0
  232 Santa Maria II 408 408
  064 Santa Ynez 734 613
  165 Sisquoc 603 596
Santa Clara 211 Gilroy 672 630
Santa Cruz 104 De Laveaga 558 558
  209 Watsonville West II 358 358
Shasta 043 McArthur 1961 1034
  224 Shasta College 923 740
Siskiyou 236 Macdoel II 1996 784
  225 Scott Valley 1858 889
  091 Tulelake FS 2002 892
Solano 121 Dixon 0 0
  212 Hastings Tract East 936 856
  139 Winters 824 759
Sonoma 158 Bennett Valley 942 814
  144 Petaluma East 873 749
  083 Santa Rosa 893 714
  103 Windsor 891 725
Stanislaus 206 Denair 871 835
  071 Modesto 987 845
  194 Oakdale 907 863
  161 Patterson 0 0
Sutter 235 Verona 922 817
Tehama 008 Gerber 0 0
  222 Gerber South 899 819
Tulare 203 Alpaugh 0 0
  182 Delano 942 915
  086 Lindcove 0 0
  169 Porterville 911 857
Ventura 152 Camarillo 319 319
  217 Moorpark 178 178
  156 Oxnard 0 0
  198 Santa Paula 393 393
Yolo 155 Bryte 0 0
  006 Davis 808 781
  196 Esparto 0 0
  226 Woodland 730 714
Yuba 084 Browns Valley 657 657