Hero Image

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 576 555
  171 Union City 379 369
Amador 227 Plymouth 724 690
Butte 244 Biggs 616 607
  012 Durham 715 681
Colusa 250 Williams 648 635
Contra Costa 047 Brentwood 554 545
  170 Concord 532 513
  213 El Cerrito 290 290
  178 Moraga 669 633
El Dorado 013 Camino 711 643
  228 Diamond Springs 617 611
Fresno 205 Coalinga 474 472
  007 Firebaugh/Telles 589 564
  190 Five Points South West 0 0
  002 FivePoints/WSFS USDA 658 622
  080 Fresno State 651 627
  142 Orange Cove 549 541
  124 Panoche 627 607
  039 Parlier 655 640
  105 Westlands 688 629
Imperial 041 Calipatria/Mulberry 295 272
  087 Meloland 214 209
  175 Palo Verde II 369 325
  128 Salton Sea East 0 0
  127 Salton Sea West 0 0
  068 Seeley 210 189
  201 UC-Andrade 0 0
  186 UC-San Luis 0 0
  181 Westmorland North 240 227
Inyo 035 Bishop 1268 613
  183 Owens Lake North 1120 744
  189 Owens Lake South 1221 663
Kern 125 Arvin-Edison 555 551
  146 Belridge 617 586
  054 Blackwells Corner 0 0
  005 Shafter/USDA 588 584
Kings 021 Kettleman 0 0
  015 Stratford 679 635
Lassen 057 Buntingville 0 0
Los Angeles 216 Arleta 211 211
  215 Chatsworth 148 148
  133 Glendale 0 0
  174 Long Beach 225 225
  159 Monrovia 192 192
  197 Palmdale 852 660
  220 Palmdale Central 641 559
  078 Pomona 263 263
  204 Santa Clarita 236 236
  099 Santa Monica 43 43
  219 West Hills 200 200
Madera 145 Madera 0 0
  188 Madera II 0 0
Marin 187 Black Point 571 561
  157 Point San Pedro 423 421
Mendocino 085 Hopland FS 0 0
  106 Sanel Valley 737 672
Merced 092 Kesterson 619 590
  056 Los Banos 624 595
  148 Merced 771 711
Modoc 090 Alturas 1567 718
Monterey 114 Arroyo Seco 378 378
  210 Carmel 301 301
  019 Castroville 0 0
  113 King City-Oasis Rd. 544 515
  193 Pacific Grove 146 146
  129 Pajaro 288 288
  116 Salinas North 238 238
  214 Salinas South II 298 298
Napa 109 Carneros 591 574
  077 Oakville 584 564
Orange 245 Coto de Caza 199 199
  075 Irvine 97 97
  241 San Clemente 190 190
Placer 195 Auburn 536 529
Riverside 135 Blythe NE 380 354
  118 Cathedral City 0 0
  239 Hemet 206 206
  200 Indio 2 191 189
  208 La Quinta II 126 126
  238 Moreno Valley 0 0
  136 Oasis 159 159
  240 Perris 384 376
  151 Ripley 327 310
  062 Temecula 81 81
  237 Temecula East III 207 207
  218 Thermal South 291 271
  044 U.C. Riverside 206 206
  179 Winchester 467 439
Sacramento 131 Fair Oaks 581 575
  140 Twitchell Island 521 520
San Benito 126 San Benito 454 440
  143 San Juan Valley 502 478
San Bernardino 134 Barstow NE 0 0
  199 Big Bear Lake 1129 587
  233 Joshua Tree 573 454
  192 Lake Arrowhead 1339 809
  234 Newberry Springs II 0 0
  117 Victorville 705 610
San Diego 207 Borrego Springs 298 263
  153 Escondido SPV 293 277
  150 Miramar 124 124
  147 Otay Lake 140 140
  184 San Diego II 42 42
  173 Torrey Pines 12 12
San Joaquin 166 Lodi West 0 0
  070 Manteca 622 605
  167 Tracy 0 0
San Luis Obispo 163 Atascadero 706 598
  202 Nipomo 173 173
  052 San Luis Obispo 230 230
  160 San Luis Obispo West 289 289
Santa Barbara 088 Cuyama 813 756
  094 Goleta Foothills 0 0
  231 Lompoc 494 482
  107 Santa Barbara 27 27
  230 Santa Barbara II 0 0
  232 Santa Maria II 254 254
  064 Santa Ynez 554 491
  165 Sisquoc 592 529
Santa Clara 211 Gilroy 469 446
Santa Cruz 104 De Laveaga 325 325
  209 Watsonville West II 206 206
Shasta 043 McArthur 475 335
  224 Shasta College 831 725
Siskiyou 236 Macdoel II 1616 682
  225 Scott Valley 1541 780
  091 Tulelake FS 1612 729
Solano 121 Dixon 0 0
  212 Hastings Tract East 687 668
  139 Winters 640 616
Sonoma 158 Bennett Valley 694 651
  144 Petaluma East 632 601
  083 Santa Rosa 649 612
  103 Windsor 666 630
Stanislaus 206 Denair 623 618
  071 Modesto 646 620
  194 Oakdale 622 615
  161 Patterson 0 0
Sutter 235 Verona 727 700
Tehama 008 Gerber 0 0
  222 Gerber South 738 696
Tulare 203 Alpaugh 0 0
  182 Delano 654 637
  086 Lindcove 0 0
  169 Porterville 669 640
Ventura 152 Camarillo 219 219
  217 Moorpark 140 140
  156 Oxnard 0 0
  198 Santa Paula 283 283
Yolo 155 Bryte 515 514
  006 Davis 603 599
  196 Esparto 0 0
  226 Woodland 594 588
Yuba 084 Browns Valley 497 497