Compare California and Oregon Weather

California is 786.1 kilometers (488.5 miles) away and has the same time zone with Oregon, United States. California's climate is classified as Mediterranean, hot summer (Köppen climate classification: Csa) while Oregon has a Mediterranean, warm summer climate (Csb).

California generally has warmer weather than Oregon. The average mean temperature in California is 19.97°C (67.95°F) while Oregon’s temperature is 10.09°C (50.16°F) and the difference is 9.88°C (49.78°F). California is hottest on average in July, when the day time temperature may reach 31.43°C (88.57°F), while Oregon is warmest in July when the average high temperature is 22.61°C (72.7°F). California is coldest in December when the average low temperature is 5.42°C (41.76°F), while December is the coldest month in Oregon, when night time temperature often falls below -3.87°C (25.03°F).

Finally, California has about 2.48 times more rainfall than Oregon, (California’s 30.48mm vs Oregon’s average of 12.29mm).

Comparison summary

Weather	California	Oregon	Difference
Hottest month	July: 31.43°C (88.57°F)	July: 22.61°C (72.7°F)	8.82°C (47.88°F)
Coldest month	December: 5.42°C (41.76°F)	December: -3.87°C (25.03°F)	9.29°C (48.72°F)
Wettest month	March: 73.65mm (2.9in)	February: 18.99mm (0.75in)	54.66mm (2.15in)
Driest month	June: 1.35mm (0.05in)	July: 3.84mm (0.15in)	2.49mm (0.1in)

Contents [show]

Temperature
Precipitation
Number of days with rainfall
Wind Speed
Average Length of Day
Humidity
Comments

Temperature

Average Temperature ( °C )

City	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
California	10.64	11.75	14.28	17.72	21.83	28.18	31.43	30.67	27.74	21.21	14.28	9.91	19.97
Oregon	0.61	1.49	4.39	8.0	13.0	17.25	22.61	22.24	17.5	10.47	3.87	-0.36	10.09

City California

Jan10.64
Feb11.75
Mar14.28
Apr17.72
May21.83
Jun28.18
Jul31.43
Aug30.67
Sep27.74
Oct21.21
Nov14.28
Dec9.91
Yea19.97

City Oregon

Jan0.61
Feb1.49
Mar4.39
Apr8.0
May13.0
Jun17.25
Jul22.61
Aug22.24
Sep17.5
Oct10.47
Nov3.87
Dec-0.36
Yea10.09

Average Temperature ( °F )

City	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
California	51.15	53.15	57.7	63.9	71.29	82.72	88.57	87.21	81.93	70.18	57.7	49.84	67.95
Oregon	33.1	34.68	39.9	46.4	55.4	63.05	72.7	72.03	63.5	50.85	38.97	31.35	50.16

City California

Jan51.15
Feb53.15
Mar57.7
Apr63.9
May71.29
Jun82.72
Jul88.57
Aug87.21
Sep81.93
Oct70.18
Nov57.7
Dec49.84
Yea67.95

City Oregon

Jan33.1
Feb34.68
Mar39.9
Apr46.4
May55.4
Jun63.05
Jul72.7
Aug72.03
Sep63.5
Oct50.85
Nov38.97
Dec31.35
Yea50.16

Precipitation

Precipitation (mm)

City	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
California	62.04	64.84	73.65	35.34	25.94	1.35	3.45	2.39	5.47	13.31	28.05	49.91	30.48
Oregon	16.43	18.99	15.31	15.45	15.65	11.25	3.84	6.87	7.67	9.81	12.67	13.56	12.29

City California

Jan62.04
Feb64.84
Mar73.65
Apr35.34
May25.94
Jun1.35
Jul3.45
Aug2.39
Sep5.47
Oct13.31
Nov28.05
Dec49.91
Yea30.48

City Oregon

Jan16.43
Feb18.99
Mar15.31
Apr15.45
May15.65
Jun11.25
Jul3.84
Aug6.87
Sep7.67
Oct9.81
Nov12.67
Dec13.56
Yea12.29

Precipitation (in)

City	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
California	2.44	2.55	2.9	1.39	1.02	0.05	0.14	0.09	0.22	0.52	1.1	1.96	1.2
Oregon	0.65	0.75	0.6	0.61	0.62	0.44	0.15	0.27	0.3	0.39	0.5	0.53	0.48

City California

Jan2.44
Feb2.55
Mar2.9
Apr1.39
May1.02
Jun0.05
Jul0.14
Aug0.09
Sep0.22
Oct0.52
Nov1.1
Dec1.96
Yea1.2

City Oregon

Jan0.65
Feb0.75
Mar0.6
Apr0.61
May0.62
Jun0.44
Jul0.15
Aug0.27
Sep0.3
Oct0.39
Nov0.5
Dec0.53
Yea0.48

Number of days with rainfall

Average Number of Rainy Days ( Days )

City	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
California	6.64	6.45	8.82	5.64	3.0	0.27	1.09	0.55	1.0	2.55	3.91	6.18	3.84
Oregon	4.82	4.27	4.64	3.27	4.09	2.82	1.0	1.55	2.27	2.73	3.73	3.91	3.26

City California

Jan6.64
Feb6.45
Mar8.82
Apr5.64
May3.0
Jun0.27
Jul1.09
Aug0.55
Sep1.0
Oct2.55
Nov3.91
Dec6.18
Yea3.84

City Oregon

Jan4.82
Feb4.27
Mar4.64
Apr3.27
May4.09
Jun2.82
Jul1.0
Aug1.55
Sep2.27
Oct2.73
Nov3.73
Dec3.91
Yea3.26

Wind Speed

Average Wind Speed ( km/h )

City	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
California	5.79	6.72	7.42	7.81	7.93	8.56	7.63	7.28	6.98	6.11	5.73	5.68	6.97
Oregon	12.21	11.97	12.42	12.42	11.7	11.27	9.78	9.23	9.28	10.33	12.14	11.86	11.22

City California

Jan5.79
Feb6.72
Mar7.42
Apr7.81
May7.93
Jun8.56
Jul7.63
Aug7.28
Sep6.98
Oct6.11
Nov5.73
Dec5.68
Yea6.97

City Oregon

Jan12.21
Feb11.97
Mar12.42
Apr12.42
May11.7
Jun11.27
Jul9.78
Aug9.23
Sep9.28
Oct10.33
Nov12.14
Dec11.86
Yea11.22

Average Wind Speed ( mph )

City	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
California	3.6	4.18	4.61	4.85	4.93	5.32	4.74	4.52	4.34	3.8	3.56	3.53	4.33
Oregon	7.59	7.44	7.72	7.72	7.27	7.0	6.08	5.74	5.77	6.42	7.54	7.37	6.97

City California

Jan3.6
Feb4.18
Mar4.61
Apr4.85
May4.93
Jun5.32
Jul4.74
Aug4.52
Sep4.34
Oct3.8
Nov3.56
Dec3.53
Yea4.33

City Oregon

Jan7.59
Feb7.44
Mar7.72
Apr7.72
May7.27
Jun7.0
Jul6.08
Aug5.74
Sep5.77
Oct6.42
Nov7.54
Dec7.37
Yea6.97

Average Length of Day ( Hours )

City	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
California	7.89	7.87	10.29	12.64	13.79	14.41	14.34	13.36	12.27	9.35	8.17	7.82	11.02
Oregon	7.14	7.47	10.14	12.67	13.89	14.14	14.38	13.8	12.28	8.24	7.73	7.12	10.75

City California

Jan7.89
Feb7.87
Mar10.29
Apr12.64
May13.79
Jun14.41
Jul14.34
Aug13.36
Sep12.27
Oct9.35
Nov8.17
Dec7.82
Yea11.02

City Oregon

Jan7.14
Feb7.47
Mar10.14
Apr12.67
May13.89
Jun14.14
Jul14.38
Aug13.8
Sep12.28
Oct8.24
Nov7.73
Dec7.12
Yea10.75

Humidity (%)

City	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
California	65.96	64.11	61.92	56.92	46.22	33.75	29.85	29.02	31.38	40.36	52.02	62.55	47.84
Oregon	78.78	76.37	71.3	62.43	56.96	52.88	43.45	42.76	49.6	58.58	70.77	79.39	61.94

City California

Jan65.96
Feb64.11
Mar61.92
Apr56.92
May46.22
Jun33.75
Jul29.85
Aug29.02
Sep31.38
Oct40.36
Nov52.02
Dec62.55
Yea47.84

City Oregon

Jan78.78
Feb76.37
Mar71.3
Apr62.43
May56.96
Jun52.88
Jul43.45
Aug42.76
Sep49.6
Oct58.58
Nov70.77
Dec79.39
Yea61.94

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