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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 81 81
  171 Union City 44 44
Amador 227 Plymouth 5 5
Butte 244 Biggs 91 91
  012 Durham 110 110
Colusa 250 Williams 86 86
Contra Costa 047 Brentwood 46 46
  170 Concord 80 80
  213 El Cerrito 0 0
  178 Moraga 118 111
El Dorado 013 Camino 0 0
  228 Diamond Springs 0 0
Fresno 205 Coalinga 4 4
  007 Firebaugh/Telles 51 51
  190 Five Points South West 70 68
  002 FivePoints/WSFS USDA 87 82
  080 Fresno State 72 72
  142 Orange Cove 51 51
  124 Panoche 236 44
  039 Parlier 106 90
  105 Westlands 231 45
Imperial 041 Calipatria/Mulberry 46 16
  087 Meloland 7 7
  175 Palo Verde II 54 50
  128 Salton Sea East 0 0
  127 Salton Sea West 0 0
  068 Seeley 11 11
  201 UC-Andrade 0 0
  186 UC-San Luis 0 0
  181 Westmorland North 216 24
Inyo 035 Bishop 173 111
  183 Owens Lake North 128 120
  189 Owens Lake South 171 117
Kern 125 Arvin-Edison 49 49
  146 Belridge 226 34
  054 Blackwells Corner 48 48
  005 Shafter/USDA 73 71
Kings 021 Kettleman 0 0
  015 Stratford 59 59
Lassen 057 Buntingville 202 101
Los Angeles 216 Arleta 192 0
  215 Chatsworth 192 0
  133 Glendale 0 0
  174 Long Beach 21 21
  159 Monrovia 0 0
  197 Palmdale 116 101
  220 Palmdale Central 90 80
  078 Pomona 2 2
  204 Santa Clarita 0 0
  099 Santa Monica 0 0
  219 West Hills 192 0
Madera 145 Madera 0 0
  188 Madera II 0 0
Marin 187 Black Point 91 85
  157 Point San Pedro 81 81
Mendocino 085 Hopland FS 0 0
  106 Sanel Valley 119 113
Merced 092 Kesterson 116 104
  056 Los Banos 87 85
  148 Merced 147 138
Modoc 090 Alturas 194 81
Monterey 114 Arroyo Seco 62 62
  210 Carmel 53 53
  019 Castroville 31 31
  113 King City-Oasis Rd. 92 89
  193 Pacific Grove 1 1
  129 Pajaro 33 33
  116 Salinas North 1 1
  214 Salinas South II 4 4
Napa 109 Carneros 230 38
  077 Oakville 99 99
Orange 245 Coto de Caza 9 9
  075 Irvine 4 4
  241 San Clemente 7 7
Placer 195 Auburn 0 0
Riverside 135 Blythe NE 25 24
  118 Cathedral City 0 0
  239 Hemet 7 7
  200 Indio 2 15 15
  208 La Quinta II 9 7
  238 Moreno Valley 0 0
  136 Oasis 4 4
  240 Perris 91 85
  151 Ripley 71 31
  062 Temecula 0 0
  237 Temecula East III 4 0
  218 Thermal South 27 25
  044 U.C. Riverside 0 0
  179 Winchester 65 61
Sacramento 131 Fair Oaks 27 27
  140 Twitchell Island 48 48
San Benito 126 San Benito 82 82
  143 San Juan Valley 116 115
San Bernardino 134 Barstow NE 0 0
  199 Big Bear Lake 179 139
  233 Joshua Tree 37 30
  192 Lake Arrowhead 186 88
  234 Newberry Springs II 40 35
  117 Victorville 74 67
San Diego 207 Borrego Springs 21 21
  153 Escondido SPV 69 69
  150 Miramar 0 0
  147 Otay Lake 0 0
  184 San Diego II 0 0
  173 Torrey Pines 34 0
San Joaquin 166 Lodi West 0 0
  070 Manteca 113 112
  167 Tracy 0 0
San Luis Obispo 163 Atascadero 130 108
  202 Nipomo 7 7
  052 San Luis Obispo 31 31
  160 San Luis Obispo West 32 32
Santa Barbara 088 Cuyama 95 85
  094 Goleta Foothills 0 0
  231 Lompoc 35 34
  107 Santa Barbara 2 2
  230 Santa Barbara II 0 0
  232 Santa Maria II 14 14
  064 Santa Ynez 126 93
  165 Sisquoc 74 74
Santa Clara 211 Gilroy 83 80
Santa Cruz 104 De Laveaga 34 34
  209 Watsonville West II 1 1
Shasta 043 McArthur 186 104
  224 Shasta College 103 102
Siskiyou 236 Macdoel II 198 72
  225 Scott Valley 198 96
  091 Tulelake FS 200 90
Solano 121 Dixon 75 75
  212 Hastings Tract East 77 77
  139 Winters 68 68
Sonoma 158 Bennett Valley 116 115
  144 Petaluma East 65 61
  083 Santa Rosa 105 96
  103 Windsor 97 90
Stanislaus 206 Denair 85 85
  071 Modesto 80 78
  194 Oakdale 77 77
  161 Patterson 0 0
Sutter 235 Verona 122 117
Tehama 008 Gerber 0 0
  222 Gerber South 87 85
Tulare 203 Alpaugh 0 0
  182 Delano 73 73
  086 Lindcove 63 63
  169 Porterville 114 105
Ventura 152 Camarillo 18 18
  217 Moorpark 0 0
  156 Oxnard 0 0
  198 Santa Paula 14 14
Yolo 155 Bryte 20 20
  006 Davis 68 67
  196 Esparto 0 0
  226 Woodland 51 51
Yuba 084 Browns Valley 0 0