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California State Climatologist
Department of Water Resources

3310 El Camino Avenue, Suite 200
Sacramento, CA 95821

Mailing Address:
P.O. Box 219000
Sacramento, CA 95821-9000


DWR My CA

South Coast Hydrologic Region

Region Avg	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Avg Temp	52.6	54.0	55.2	58.7	62.6	67.6	72.1	72.8	70.2	64.4	57.1	52.7	61.7
Std Dev T	2.1	2.2	2.5	2.7	2.6	2.1	1.6	1.9	2.4	1.9	2.4	2.5	1.0
Avg Precip	3.54	3.79	3.39	0.97	0.38	0.11	0.10	0.23	0.38	0.58	1.36	2.08	16.91
Std Dev P	3.59	3.44	2.82	0.95	0.70	0.20	0.12	0.43	0.66	0.61	1.32	1.72	7.68

Location: ACTON ESCONDIDO FC261

Location: ACTON ESCONDIDO FC261

State: CA

Lat: 34 30'

Long: -118 16'

Elev: 2970

ID: 040014

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Precip. 2.42 2.51 2.42 0.59 0.23 0.05 0.01 0.12 0.25 0.43 0.83 1.4 11.26

Location: ALISO CANYON OAT MTN

Location: ALISO CANYON OAT MTN

State: CA

Lat: 34 19'

Long: -118 33'

Elev: 2367

ID: 040115

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Precip. 5.05 4.5 4.38 0.9 0.28 0.05 0.01 0.22 0.35 0.65 1.99 2.65 21.03

Location: ALPINE

Location: ALPINE

State: CA

Lat: 32 50'

Long: -116 47'

Elev: 1735

ID: 040136

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Minimum 43.1 44.1 44.7 47.1 50.7 55.6 60.7 62.3 60.6 54.2 46.8 43.1 51.1

Maximum 65 66.2 66.8 71.9 75.1 83 88.6 89.4 86.4 79.4 71.2 65.4 75.7

Mean 54.1 55.2 55.8 59.5 62.9 69.3 74.7 75.9 73.5 66.8 59 54.3 63.4

Precip. 3.49 3.44 3.92 1.26 0.47 0.2 0.16 0.27 0.42 0.85 1.72 1.99 18.19

HDD 344 279 268 200 140 46 8 5 21 67 206 342 1926

CDD 0 4 12 35 76 174 306 341 276 123 26 9 1382

Location: ALTADENA

Location: ALTADENA

State: CA

Lat: 34 11'

Long: -118 08'

Elev: 1127

ID: 040144

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Precip. 4.58 4.99 4.48 1.47 0.6 0.22 0.06 0.19 0.57 0.67 1.73 2.48 22.04

Location: ANAHEIM

Location: ANAHEIM

State: CA

Lat: 33 52'

Long: -117 51'

Elev: 335

ID: 040192

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Minimum 45.2 46.6 48.4 51.4 55.7 59.8 62.4 63.4 61.7 56.3 50.5 45.9 53.9

Maximum 68.6 69.1 69.6 72.5 75.3 79 84 85.6 84.6 80.2 74.1 69.6 76

Mean 56.9 57.9 59 62 65.5 69.4 73.2 74.5 73.2 68.3 62.3 57.8 65

Precip. 2.47 2.86 2.55 0.66 0.13 0.09 0.03 0.01 0.06 0.26 0.82 1.29 11.23

HDD 256 206 202 137 74 22 1 1 7 30 117 233 1286

CDD 5 6 17 45 91 155 256 296 251 130 34 8 1294

Location: ANZA

Location: ANZA

State: CA

Lat: 33 33'

Long: -116 41'

Elev: 3915

ID: 040235

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Precip. 2.37 2.65 2.37 0.79 0.52 0.07 0.46 0.58 0.66 0.47 1.08 1.4 13.42

Location: AVALON PLEASURE PIER

Location: AVALON PLEASURE PIER

State: CA

Lat: 33 21'

Long: -118 19'

Elev: 25

ID: 040395

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Minimum 49.3 50.3 51.8 53.9 56.8 59.5 62.2 64.1 63.1 59.1 53 49.3 56

Maximum 64.6 64.2 65.3 67.6 69.2 71.1 74 75.4 75 72.7 68.2 64.7 69.3

Mean 57 57.3 58.6 60.8 63 65.3 68.1 69.8 69.1 65.9 60.6 57 62.7

Precip. 2.76 2.51 2.36 0.61 0.12 0.01 0 0.09 0.28 0.22 1.1 1.82 11.88

HDD 257 221 211 155 127 79 29 16 31 53 156 254 1589

CDD 0 4 12 28 63 89 124 164 153 81 25 6 749

Location: BEAUMONT 1 E

Location: BEAUMONT 1 E

State: CA

Lat: 33 56'

Long: -116 58'

Elev: 2600

ID: 040609

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Minimum 39.8 40.2 41.1 43.6 48.6 53.7 58.8 59.5 56.7 50 43 39.4 47.9

Maximum 63.7 66.2 68.3 74 80.2 89.5 96.3 96.6 91.4 82.3 71.6 64.7 78.7

Mean 51.8 53.2 54.7 58.8 64.4 71.6 77.6 78.1 74.1 66.2 57.3 52.1 63.3

Precip. 4.18 4.07 3.72 1.1 0.73 0.21 0.27 0.23 0.63 0.72 1.44 2 19.3

HDD 412 332 302 218 127 22 0 0 8 71 247 407 2146

CDD 0 1 12 31 109 219 390 404 279 106 16 5 1572

Location: BIG BEAR LAKE

Location: BIG BEAR LAKE

State: CA

Lat: 34 15'

Long: -116 53'

Elev: 6790

ID: 040741

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Minimum 20.7 22.1 24.5 28.3 34.4 41.1 47.1 46.3 40.6 32.1 25.3 21.1 32

Maximum 47.1 48 51.1 58 66.1 75.6 80.7 79.1 73.6 64.4 54.3 47.9 62.2

Mean 33.9 35.1 37.8 43.2 50.3 58.4 63.9 62.7 57.1 48.3 39.8 34.5 47.1

Precip. 4.1 4.6 3.55 0.95 0.51 0.18 0.75 0.98 0.53 0.78 1.55 2.67 21.15

HDD 965 839 778 657 461 208 73 105 241 519 756 946 6548

CDD 0 0 0 0 3 10 39 33 4 0 0 0 89

Location: BIG TUJUNGA DAM FC46DE

Location: BIG TUJUNGA DAM FC46DE

State: CA

Lat: 34 18'

Long: -118 11'

Elev: 2317

ID: 040798

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Precip. 5.25 6.31 5.87 1.53 0.73 0.15 0.05 0.14 0.5 0.82 1.91 3.21 26.47

Location: BURBANK VALLEY PUMP PLN

Location: BURBANK VALLEY PUMP PLN

State: CA

Lat: 34 11'

Long: -118 20'

Elev: 655

ID: 041194

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Minimum 42 44.3 46.2 49.5 54.2 58.3 62.1 62.4 59.9 53.6 45.4 41.3 51.6

Maximum 67.5 69.5 70.6 74.9 77.5 83.2 88.9 89.9 87.1 81.5 73.5 67.9 77.7

Mean 54.8 56.9 58.4 62.2 65.9 70.8 75.5 76.2 73.5 67.6 59.5 54.6 64.7

Precip. 3.56 4.29 3.88 1.02 0.37 0.12 0.02 0.18 0.3 0.55 1.05 2.15 17.49

HDD 320 232 221 132 77 28 2 0 12 38 187 326 1575

CDD 1 5 15 49 104 200 327 347 266 117 20 4 1455

Location: CAMP PENDLETON MCAS

Location: CAMP PENDLETON MCAS

State: CA

Lat: 33 18'

Long: -117 21'

Elev: 75

ID: 803154

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Minimum 41.6 43.3 45.4 47.8 53.4 56.9 59.7 61.3 59.1 52.6 43.8 40 50.4

Maximum 68.5 68.6 68.2 71.4 73.1 76.5 81.2 82.4 82.1 78.3 74.3 70.4 74.6

Mean 55.1 56 56.8 59.6 63.3 66.7 70.5 71.9 70.6 65.5 59.1 55.2 62.5

Precip. 3 2.91 2.67 0.81 0.32 0.14 0.08 0.02 0.14 0.46 0.93 1.73 13.21

HDD 313 257 243 195 116 47 10 5 13 75 199 310 1783

CDD 4 4 13 32 62 99 180 216 180 88 21 5 904

Location: CAMPO

Location: CAMPO

State: CA

Lat: 32 37'

Long: -116 28'

Elev: 2630

ID: 041424

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Minimum 34.1 34.3 35.8 37.3 41.3 44.7 51 52.3 48.7 41.8 35.3 32.5 40.8

Maximum 62.2 64.2 66 72.1 78.1 87.3 93.5 93.6 88.8 79.4 69.3 63 76.5

Mean 48.2 49.3 50.9 54.7 59.7 66 72.3 73 68.8 60.6 52.3 47.8 58.6

Precip. 3.3 3.04 3.02 0.94 0.26 0.09 0.29 0.55 0.4 0.65 1.24 1.8 15.58

HDD 522 440 438 319 198 69 9 10 42 170 381 535 3133

CDD 0 0 0 10 34 99 234 257 153 33 1 0 821

Location: CANOGA PARK PIERCE COLL

Location: CANOGA PARK PIERCE COLL

State: CA

Lat: 34 11'

Long: -118 34'

Elev: 790

ID: 041484

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Minimum 39.5 40.9 42.3 44.8 49.1 53.2 56.9 57.6 55.2 49.2 41.7 38.3 47.4

Maximum 67.9 69.9 72 77.7 81.3 88.8 95 96 91.7 84.4 74.7 68.8 80.7

Mean 53.7 55.4 57.2 61.3 65.2 71 76 76.8 73.5 66.8 58.2 53.6 64.1

Precip. 3.83 4.4 3.6 0.88 0.32 0.07 0.01 0.15 0.24 0.62 1.29 2.38 17.79

HDD 349 272 260 163 104 29 1 0 10 55 221 358 1822

CDD 0 3 16 49 111 208 341 365 263 109 18 2 1485

Location: CHATSWORTH FC 24 F

Location: CHATSWORTH FC 24 F

State: CA

Lat: 34 15'

Long: -118 36'

Elev: 950

ID: 041680

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Precip. 3.97 3.46 3.38 0.64 0.21 0.02 0.01 0.18 0.28 0.34 1.69 1.95 16.13

Location: CHULA VISTA

Location: CHULA VISTA

State: CA

Lat: 32 38'

Long: -117 05'

Elev: 56

ID: 041758

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Minimum 46.1 47.7 50 52.8 57.1 60.3 64 65.3 63.7 57.7 49.8 45.5 55

Maximum 68.5 68.8 68.4 70.2 70.3 72.6 76.1 78.3 78.7 76.4 72.2 68.8 72.4

Mean 57.3 58.3 59.2 61.5 63.7 66.5 70.1 71.8 71.2 67.1 61 57.2 63.7

Precip. 1.99 1.99 2.07 0.69 0.14 0.08 0.03 0.08 0.2 0.39 1.11 1.18 9.95

HDD 243 194 190 126 91 40 8 4 8 31 138 248 1321

CDD 4 5 10 20 50 83 165 214 193 95 18 5 862

Location: CORONA

Location: CORONA

State: CA

Lat: 33 53'

Long: -117 33'

Elev: 610

ID: 042031

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Minimum 41.5 43.1 44.8 47.5 52.2 56 59.7 61.2 58.6 52.4 44.6 40.5 50.2

Maximum 67.8 69.8 71.4 76.6 80.5 86.6 92 92.9 89.6 82.8 74.1 68.4 79.4

Mean 54.7 56.5 58.1 62.1 66.4 71.3 75.9 77.1 74.1 67.6 59.4 54.5 64.8

Precip. 2.72 2.88 2.31 0.68 0.16 0.02 0.02 0.12 0.23 0.36 1.03 1.47 12

HDD 322 245 229 142 73 14 0 1 8 44 192 329 1599

CDD 1 5 14 54 113 204 336 375 283 125 22 2 1534

Location: COVINA CITY YRD FC387B

Location: COVINA CITY YRD FC387B

State: CA

Lat: 34 06'

Long: -117 53'

Elev: 583

ID: 042090

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Precip. 4.33 4.37 3.7 0.96 0.4 0.13 0.04 0.17 0.37 0.65 1.49 2.39 19

Location: CRYSTAL LAKE FC 283 C

Location: CRYSTAL LAKE FC 283 C

State: CA

Lat: 34 19'

Long: -117 50'

Elev: 5370

ID: 042198

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Precip. 7.55 8.48 7.15 1.88 0.75 0.23 0.1 0.35 0.76 1.36 2.23 4.47 35.31

Location: CULVER CITY

Location: CULVER CITY

State: CA

Lat: 34 00'

Long: -118 25'

Elev: 55

ID: 042214

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Minimum 46.1 47.2 49.1 52 55.7 58.8 61.5 62.2 61.3 57.2 50.8 46.3 54

Maximum 67.3 68.6 69.3 72.6 73.5 77.1 80 81.1 80.2 77 71.6 67.7 73.8

Mean 56.7 57.9 59.2 62.3 64.6 68 70.8 71.7 70.8 67.1 61.2 57 63.9

Precip. 3.19 3.25 2.66 0.58 0.26 0.04 0.02 0.07 0.08 0.33 0.94 1.9 13.32

HDD 258 203 192 123 81 28 8 8 17 32 142 252 1344

CDD 1 4 13 41 68 116 185 213 190 97 27 4 959

Location: CUYAMACA

Location: CUYAMACA

State: CA

Lat: 32 59'

Long: -116 35'

Elev: 4640

ID: 042239

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Minimum 28.7 29.9 32 35.2 40.4 48 54.6 53.7 47.7 38.5 31.9 27.6 39

Maximum 51.1 52.9 55 60.4 67 76.6 83.4 83.6 78.9 69 58.7 52.2 65.7

Mean 39.9 41.4 43.5 47.8 53.7 62.3 69 68.7 63.3 53.8 45.3 39.9 52.4

Precip. 6.34 6.62 7.02 2.58 1.12 0.27 0.43 0.93 1.04 1.64 3.45 4.39 35.83

HDD 779 660 613 518 369 140 23 38 121 358 591 778 4988

CDD 0 0 0 2 18 58 147 152 70 10 0 0 457

Location: DESCANSO RANGER STN

Location: DESCANSO RANGER STN

State: CA

Lat: 32 51'

Long: -116 37'

Elev: 3500

ID: 042406

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Precip. 5.05 5.03 5.24 1.73 0.6 0.17 0.28 0.55 0.5 1.14 2.07 2.81 25.17

Location: DOWNEY FIRE STN FC107C

Location: DOWNEY FIRE STN FC107C

State: CA

Lat: 33 56'

Long: -118 09'

Elev: 110

ID: 042494

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Precip. 3.37 3.75 2.89 0.78 0.22 0.09 0.03 0.14 0.28 0.4 1.21 1.91 15.07

Location: DRY CANYON RESERVOIR

Location: DRY CANYON RESERVOIR

State: CA

Lat: 34 29'

Long: -118 32'

Elev: 1455

ID: 042516

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Minimum 36.1 36.9 37.9 41 45.5 50.1 54 54.9 52 46 39.4 35.8 44.1

Maximum 64.4 65.5 68.4 74.1 79.5 87.9 94.2 95.4 90.7 82.1 71.8 65.4 78.3

Mean 50.3 51.2 53.2 57.6 62.5 69 74.1 75.2 71.4 64.1 55.6 50.6 61.2

Precip. 2.99 3.5 3.03 0.63 0.22 0.01 0.01 0.11 0.27 0.36 1.22 1.61 13.96

HDD 457 385 374 251 142 29 4 2 21 97 293 447 2502

CDD 0 0 7 27 64 150 286 316 212 67 10 0 1139

Location: EL CAJON

Location: EL CAJON

State: CA

Lat: 32 49'

Long: -116 59'

Elev: 405

ID: 042706

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Minimum 41.6 44 46.5 50.1 54.7 58.5 62.4 63.8 61.3 54.6 45.2 40.3 51.9

Maximum 68.2 69.3 70.1 74.1 76.4 82 87 88.1 86.5 80.2 73.5 68.3 77

Mean 54.9 56.7 58.3 62.1 65.6 70.3 74.7 76 73.9 67.4 59.4 54.3 64.5

Precip. 2.47 2.57 2.66 0.79 0.16 0.06 0.04 0.06 0.15 0.46 1.18 1.36 11.96

HDD 315 238 222 131 77 13 0 0 7 40 183 334 1560

CDD 0 4 13 44 94 170 301 340 275 114 13 3 1371

Location: EL CAPITAN DAM

Location: EL CAPITAN DAM

State: CA

Lat: 32 53'

Long: -116 49'

Elev: 600

ID: 042709

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Minimum 41.6 42.8 44.6 47 51 54.1 57.2 59.2 57.5 52.6 45.4 41.5 49.5

Maximum 70.2 71.7 72.1 77.4 80.9 89.2 95.9 97 93.7 86.6 77.8 71.4 82

Mean 55.9 57.3 58.4 62.2 66 71.7 76.6 78.1 75.6 69.6 61.6 56.5 65.8

Precip. 3.19 3.35 3.67 1.21 0.44 0.15 0.08 0.13 0.35 0.81 1.49 2.01 16.88

HDD 289 227 223 140 81 14 0 0 4 28 137 276 1419

CDD 6 10 16 56 111 214 357 405 322 171 35 9 1712

Location: EL TORO MCAS

Location: EL TORO MCAS

State: CA

Lat: 33 40'

Long: -117 44'

Elev: 381

ID: 893101

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Minimum 47.2 47.7 48.7 51.2 55.2 58.7 62.4 63.4 62.1 57.3 51.2 47.1 54.4

Maximum 66.2 67.4 67.7 71.8 73.2 77.9 82.3 83.4 82.1 77.6 71.7 66.9 74

Mean 56.7 57.6 58.2 61.5 64.2 68.3 72.4 73.4 72.1 67.5 61.5 57 64.2

Precip. 2.95 3.38 2.85 0.85 0.26 0.14 0.03 0.15 0.3 0.32 1.05 1.75 14.03

HDD 268 215 206 153 97 37 8 10 16 44 148 259 1461

CDD 3 6 15 47 73 136 236 270 228 119 41 9 1183

Location: ELSINORE

Location: ELSINORE

State: CA

Lat: 33 40'

Long: -117 20'

Elev: 1285

ID: 042805

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Minimum 38.3 40.2 42.8 45.7 51.3 55.8 61 62 58.4 50.8 42.2 37.3 48.8

Maximum 66.1 68.2 71.1 77.4 82.6 91.3 98.1 98.3 92.9 83.7 73.1 66.8 80.8

Mean 52.2 54.2 57 61.6 67 73.6 79.6 80.2 75.7 67.3 57.7 52.1 64.9

Precip. 2.8 2.96 2.29 0.56 0.22 0.02 0.1 0.12 0.3 0.36 0.78 1.58 12.09

HDD 398 305 263 163 73 10 0 0 8 63 236 405 1924

CDD 0 4 13 58 134 267 451 469 327 133 15 3 1874

Location: ESCONDIDO NO 2

Location: ESCONDIDO NO 2

State: CA

Lat: 33 07'

Long: -117 06'

Elev: 600

ID: 042863

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Minimum 42.5 44.5 46.8 49.8 54.4 57.9 61.5 63.2 61.1 54.9 46.3 41.6 52

Maximum 68.5 69.4 70.4 74.8 77.5 83.6 88.6 89.1 86.9 81 73.9 69.2 77.7

Mean 55.5 57 58.6 62.3 66 70.8 75.1 76.2 74 68 60.1 55.4 64.9

Precip. 3.37 3.16 3.3 1.04 0.27 0.11 0.07 0.02 0.22 0.44 1.32 1.78 15.1

HDD 294 229 213 129 73 15 1 0 6 35 168 301 1464

CDD 0 4 13 48 103 186 312 345 274 126 21 4 1436

Location: FONTANA 5 N

Location: FONTANA 5 N

State: CA

Lat: 34 11'

Long: -117 27'

Elev: 1972

ID: 043118

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

Precip. 5.18 5.13 5.89 1.28 0.61 0.16 0.02 0.2 0.38 0.68 1.99 2.97 24.49