Comparison of 1961-1990 and
1971-2000 California Normals

San Francisco Downtown
San Francisco Airport
San Jose
Sacramento
Fresno
Los Angeles
San Diego

 

SAN
FRANCISCO
DOWNTOWN
		Max	Min	Mean	HDD	CDD	Rain
Jan	61-90	56.3	45.8	51.1	431	0	4.25
	71-00	58.1	46.4	52.3	396	0	4.72
	Change	1.8	0.6	1.2	-35	0	0.47
							
Feb	61-90	60.0	48.7	54.4	297	0	3.11
	71-00	61.4	48.5	55.0	283	2	4.15
	Change	1.4	-0.2	0.6	-14	2	1.04
							
Mar	61-90	60.8	49.0	54.9	313	0	3.21
	71-00	62.5	49.2	55.9	288	4	3.40
	Change	1.7	0.2	1.0	-25	4	0.19
							
Apr	61-90	62.1	49.8	56.0	275	0	1.32
	71-00	64.5	50.1	57.3	233	3	1.25
	Change	2.4	0.3	1.3	-42	3	-0.07
							
May	61-90	62.7	50.5	56.6	260	0	0.25
	71-00	65.4	51.4	58.4	214	9	0.54
	Change	2.7	0.9	1.8	-46	9	0.29
							
Jun	61-90	64.1	52.6	58.4	198	0	0.15
	71-00	67.7	53.2	60.5	150	14	0.13
	Change	3.6	0.6	2.1	-48	14	-0.02
							
Jul	61-90	64.6	53.5	59.1	187	0	0.04
	71-00	68.2	54.4	61.3	133	19	0.04
	Change	3.6	0.9	2.2	-54	19	0.00
							
Aug	61-90	65.6	54.6	60.1	156	0	0.07
	71-00	69.2	55.6	62.4	107	26	0.09
	Change	3.6	1.0	2.3	-49	26	0.02
							
Sep	61-90	68.7	55.9	62.3	116	35	0.27
	71-00	71.3	56.1	63.7	95	56	0.28
	Change	2.6	0.2	1.4	-21	21	0.01
							
Oct	61-90	68.7	55.2	62.0	123	30	1.30
	71-00	70.4	54.6	62.5	100	22	1.19
	Change	1.7	-0.6	0.5	-23	-8	-0.11
							
Nov	61-90	62.7	51.6	57.2	237	0	3.32
	71-00	64.1	50.8	57.5	232	5	3.31
	Change	1.4	-0.8	0.3	-5	5	-0.01
							
Dec	61-90	56.4	47.0	51.7	412	0	3.23
	71-00	58.6	46.7	52.7	383	0	3.18
	Change	2.2	-0.3	1.0	-29	0	-0.05
							
Annual	61-90	62.7	51.2	57.0	3005	65	20.52
	71-00	65.1	51.4	58.3	2614	160	22.28
	Change	2.4	0.2	1.3	-391	95	1.76
 

SAN  FRANCISCO AIRPORT

		Max	Min	Mean	HDD	CDD	Rain
Jan	61-90	55.6	41.8	48.7	505	0	4.35
	71-00	55.9	42.9	49.4	482	0	4.45
	Change	0.3	1.1	0.7	-23	0	0.10
							
Feb	61-90	59.4	45.0	52.2	358	5	3.17
	71-00	59.3	45.5	52.4	354	0	4.01
	Change	-0.1	0.5	0.2	-4	-5	0.84
							
Mar	61-90	60.8	45.8	53.3	363	0	3.06
	71-00	61.2	46.8	54.0	339	0	3.26
	Change	0.4	1.0	0.7	-24	0	0.20
							
Apr	61-90	63.9	47.2	55.6	287	5	1.37
	71-00	64.3	48.1	56.2	266	4	1.17
	Change	0.4	0.9	0.6	-21	-1	-0.20
							
May	61-90	66.5	49.7	58.1	218	0	0.09
	71-00	66.8	50.5	58.7	201	10	0.38
	Change	0.3	0.8	0.6	-17	10	0.29
							
Jun	61-90	70.3	52.6	61.5	121	16	0.11
	71-00	69.9	52.9	61.4	120	21	0.11
	Change	-0.4	0.3	-0.1	-1	5	0.00
							
Jul	61-90	71.6	53.9	62.7	92	21	0.03
	71-00	71.1	54.5	62.8	77	23	0.03
	Change	-0.5	0.6	0.1	-15	2	0.00
							
Aug	61-90	72.3	55.0	63.7	68	28	0.05
	71-00	71.7	55.5	63.6	56	26	0.07
	Change	-0.6	0.5	-0.1	-12	-2	0.02
							
Sep	61-90	73.6	55.2	64.5	79	64	0.20
	71-00	72.7	55.1	63.9	62	38	0.20
	Change	-0.9	-0.1	-0.6	-17	-26	0.00
							
Oct	61-90	70.1	51.8	61.0	135	11	1.22
	71-00	69.7	52.4	61.0	131	20	1.04
	Change	-0.4	0.6	0.0	-4	9	-0.18
							
Nov	61-90	62.4	47.1	54.8	306	0	2.86
	71-00	62.0	47.5	54.7	298	0	2.49
	Change	-0.4	0.4	-0.1	-8	0	-0.37
							
Dec	61-90	56.1	42.7	49.4	484	0	3.09
	71-00	56.1	43.0	49.5	476	0	2.89
	Change	0.0	0.3	0.1	-8	0	-0.20
							
Annual	61-90	65.2	49.0	57.0	3016	145	19.70
	71-00	65.1	49.6	57.3	2862	142	20.52
	Change	-0.1	0.6	0.3	-154	-3	0.82
 

SAN JOSE

		Max	Min	Mean	HDD	CDD	Rain
Jan	61-90	58.2	40.6	49.4	484	0	2.78
	71-00	59.3	41.7	50.5	450	0	3.03
	Change	1.1	1.1	1.1	-34	0	0.25
							
Feb	61-90	62.5	43.9	53.2	330	23	2.16
	71-00	63.4	44.6	54.0	308	0	2.84
	Change	0.9	0.7	0.8	-22	-23	0.68
							
Mar	61-90	65.3	45.4	55.4	300	0	2.58
	71-00	67.0	46.4	56.7	267	9	2.69
	Change	1.7	1.0	1.3	-33	9	0.11
							
Apr	61-90	70.0	47.1	58.6	215	23	1.17
	71-00	72.1	48.3	60.2	170	25	1.02
	Change	2.1	1.2	1.6	-45	2	-0.15
							
May	61-90	74.6	50.9	62.7	110	38	0.26
	71-00	76.7	51.8	64.3	95	72	0.44
	Change	2.1	0.9	1.6	-15	34	0.18
							
Jun	61-90	79.6	54.6	67.1	36	99	0.05
	71-00	81.8	55.4	68.6	24	131	0.10
	Change	2.2	0.8	1.5	-12	32	0.05
							
Jul	61-90	82.4	56.6	69.5	9	148	0.06
	71-00	84.3	57.5	70.9	4	188	0.06
	Change	1.9	0.9	1.4	-5	40	0.00
							
Aug	61-90	82.0	56.8	69.4	0	139	0.12
	71-00	84.0	57.7	70.9	2	183	0.07
	Change	2.0	0.9	1.5	2	44	-0.05
							
Sep	61-90	80.6	55.8	68.2	19	115	0.24
	71-00	82.2	56.7	69.5	13	146	0.23
	Change	1.6	0.9	1.3	-6	31	-0.01
							
Oct	61-90	74.5	51.6	63.1	91	32	0.90
	71-00	75.9	52.3	64.1	82	54	0.87
	Change	1.4	0.7	1.0	-9	22	-0.03
							
Nov	61-90	64.4	45.5	55.0	300	0	2.11
	71-00	65.3	45.6	55.5	289	3	1.73
	Change	0.9	0.1	0.5	-11	3	-0.38
							
Dec	61-90	57.5	40.7	49.1	493	0	1.99
	71-00	58.9	41.0	50.0	467	0	2.00
	Change	1.4	0.3	0.9	-26	0	0.01
							
Annual	61-90	71.0	49.1	60.1	2387	594	14.42
	71-00	72.6	49.9	61.3	2171	811	15.08
	Change	1.6	0.8	1.2	-216	217	0.66
 

SACRAMENTO

		Max	Min	Mean	HDD	CDD	Rain
Jan	61-90	52.7	37.7	45.2	614	0	3.73
	71-00	53.8	38.8	46.3	580	0	3.84
	Change	1.1	1.1	1.1	-34	0	0.11
							
Feb	61-90	60.0	41.4	50.7	400	29	2.87
	71-00	60.5	41.9	51.2	387	0	3.54
	Change	0.5	0.5	0.5	-13	-29	0.67
							
Mar	61-90	64.0	43.2	53.6	357	0	2.57
	71-00	64.7	44.2	54.5	335	6	2.80
	Change	0.7	1.0	0.9	-22	6	0.23
							
Apr	61-90	71.1	45.5	58.3	230	29	1.16
	71-00	71.4	46.3	58.9	208	24	1.02
	Change	0.3	0.8	0.6	-22	-5	-0.14
							
May	61-90	80.3	50.3	65.3	80	89	0.12
	71-00	80.0	50.9	65.5	97	110	0.53
	Change	-0.3	0.6	0.2	17	21	0.41
							
Jun	61-90	87.8	55.3	71.6	12	210	0.12
	71-00	87.4	55.5	71.5	10	204	0.20
	Change	-0.4	0.2	-0.1	-2	-6	0.08
							
Jul	61-90	93.2	58.1	75.7	0	332	0.05
	71-00	92.4	58.3	75.4	0	320	0.05
	Change	-0.8	0.2	-0.3	0	-12	0.00
							
Aug	61-90	92.1	58.0	75.1	0	313	0.07
	71-00	91.4	58.1	74.8	0	303	0.06
	Change	-0.7	0.1	-0.3	0	-10	-0.01
							
Sep	61-90	87.3	55.7	71.5	16	211	0.37
	71-00	87.5	55.8	71.7	11	210	0.36
	Change	0.2	0.1	0.2	-5	-1	-0.01
							
Oct	61-90	77.9	50.4	64.2	78	53	1.08
	71-00	78.2	50.6	64.4	84	66	0.89
	Change	0.3	0.2	0.2	6	13	-0.19
							
Nov	61-90	63.1	43.4	53.3	351	0	2.72
	71-00	63.7	42.8	53.3	359	5	2.19
	Change	0.6	-0.6	0.0	8	5	-0.53
							
Dec	61-90	52.7	37.8	45.3	611	0	2.51
	71-00	53.9	37.7	45.8	595	0	2.45
	Change	1.2	-0.1	0.5	-16	0	-0.06
							
Annual	61-90	73.5	48.1	60.8	2749	1237	17.52
	71-00	73.7	48.4	61.1	2666	1248	17.93
	Change	0.2	0.3	0.3	-83	11	0.41
 

FRESNO

		Max	Min	Mean	HDD	CDD	Rain
Jan	61-90	54.1	37.4	45.7	598	7	1.96
	71-00	53.6	38.4	46.0	578	0	2.16
	Change	-0.5	1.0	0.3	-20	-7	0.20
							
Feb	61-90	61.7	40.5	51.2	386	68	1.80
	71-00	61.3	41.4	51.4	377	0	2.12
	Change	-0.4	0.9	0.2	-9	-68	0.32
							
Mar	61-90	66.6	43.4	55.1	314	7	1.89
	71-00	66.1	44.9	55.5	283	3	2.20
	Change	-0.5	1.5	0.4	-31	-4	0.31
							
Apr	61-90	75.1	47.0	61.2	182	68	0.97
	71-00	74.0	48.4	61.2	140	40	0.76
	Change	-1.1	1.4	0.0	-42	-28	-0.21
							
May	61-90	84.2	53.7	69.0	34	158	0.30
	71-00	82.7	54.9	68.8	37	170	0.39
	Change	-1.5	1.2	-0.2	3	12	0.09
							
Jun	61-90	92.7	60.4	76.6	0	352	0.08
	71-00	90.9	61.2	76.1	4	351	0.23
	Change	-1.8	0.8	-0.5	4	-1	0.15
							
Jul	61-90	98.6	65.1	81.9	0	524	0.01
	71-00	96.6	66.1	81.4	0	530	0.01
	Change	-2.0	1.0	-0.5	0	6	0.00
							
Aug	61-90	96.7	63.8	80.3	0	474	0.03
	71-00	94.8	64.9	79.9	0	483	0.01
	Change	-1.9	1.1	-0.4	0	9	-0.02
							
Sep	61-90	90.1	58.8	74.5	8	293	0.24
	71-00	88.8	60.4	74.6	3	316	0.26
	Change	-1.3	1.6	0.1	-5	23	0.02
							
Oct	61-90	79.7	50.7	65.2	84	91	0.53
	71-00	78.1	51.9	65.0	70	97	0.65
	Change	-1.6	1.2	-0.2	-14	6	0.12
							
Nov	61-90	64.7	42.5	53.6	342	0	1.37
	71-00	63.0	42.3	52.7	344	1	1.10
	Change	-1.7	-0.2	-0.9	2	1	-0.27
							
Dec	61-90	53.7	37.1	45.4	608	0	1.42
	71-00	53.4	37.0	45.2	597	0	1.34
	Change	-0.3	-0.1	-0.2	-11	0	-0.08
							
Annual	61-90	76.5	50.1	63.6	2556	1967	10.60
	71-00	75.3	51.0	63.2	2433	1991	11.23
	Change	-1.2	0.9	-0.4	-123	24	0.63
 

LOS ANGELES DOWNTOWN

		Max	Min	Mean	HDD	CDD	Rain
Jan	61-90	67.7	48.9	58.3	222	14	2.92
	71-00	68.1	48.5	58.3	206	15	3.33
	Change	0.4	-0.4	0.0	-16	1	0.41
							
Feb	61-90	69.4	60.1	50.6	170	32	3.07
	71-00	69.6	50.3	60.0	149	23	3.68
	Change	0.2	-9.8	9.4	-21	-9	0.61
							
Mar	61-90	69.5	51.8	60.7	169	36	2.61
	71-00	69.8	51.6	60.7	144	26	3.14
	Change	0.3	-0.2	0.0	-25	-10	0.53
							
Apr	61-90	72.3	54.2	63.3	128	77	1.03
	71-00	73.1	54.4	63.8	83	58	0.83
	Change	0.8	0.2	0.5	-45	-19	-0.20
							
May	61-90	73.9	57.7	65.8	72	97	0.19
	71-00	74.5	57.9	66.2	36	84	0.31
	Change	0.6	0.2	0.4	-36	-13	0.12
							
Jun	61-90	78.3	61.1	69.7	35	176	0.03
	71-00	79.5	61.4	70.5	5	178	0.06
	Change	1.2	0.3	0.8	-30	2	0.03
							
Jul	61-90	84.0	64.5	74.3	0	293	0.01
	71-00	83.8	64.6	74.2	0	295	0.01
	Change	-0.2	0.1	-0.1	0	2	0.00
							
Aug	61-90	84.5	65.7	66.0	0	316	0.14
	71-00	84.8	65.6	75.2	0	325	0.13
	Change	0.3	-0.1	9.2	0	9	-0.01
							
Sep	61-90	82.7	64.6	73.7	10	271	0.45
	71-00	83.3	64.6	74.0	1	281	0.32
	Change	0.6	0.0	0.3	-9	10	-0.13
							
Oct	61-90	79.0	60.3	69.7	17	162	0.31
	71-00	79.0	59.9	69.5	11	164	0.37
	Change	0.0	-0.4	-0.2	-6	2	0.06
							
Nov	61-90	72.4	53.5	63.0	105	45	1.98
	71-00	73.2	52.6	62.9	91	44	1.05
	Change	0.8	-0.9	-0.1	-14	-1	-0.93
							
Dec	61-90	67.8	48.8	58.3	226	18	2.03
	71-00	68.7	48.3	58.5	201	13	1.91
	Change	0.9	-0.5	0.2	-25	-5	-0.12
							
Annual	61-90	75.1	56.8	66.0	1154	1537	14.77
	71-00	75.6	56.6	66.2	927	1506	15.14
	Change	0.5	-0.2	0.2	-227	-31	0.37
 

SAN DIEGO

		Max	Min	Mean	HDD	CDD	Rain
Jan	61-90	65.9	48.9	57.4	245	9	1.80
	71-00	65.8	49.7	57.8	227	2	2.28
	Change	-0.1	0.8	0.4	-18	-7	0.48
							
Feb	61-90	66.5	50.7	58.6	189	10	1.53
	71-00	66.3	51.5	58.9	176	4	2.04
	Change	-0.2	0.8	0.3	-13	-6	0.51
							
Mar	61-90	66.3	52.8	59.6	177	9	1.77
	71-00	66.3	53.6	60.0	160	5	2.26
	Change	0.0	0.8	0.4	-17	-4	0.49
							
Apr	61-90	68.4	55.6	62.0	113	23	0.79
	71-00	68.7	56.4	62.6	90	17	0.75
	Change	0.3	0.8	0.6	-23	-6	-0.04
							
May	61-90	69.1	59.1	64.1	73	45	0.19
	71-00	69.3	59.8	64.6	47	32	0.20
	Change	0.2	0.7	0.5	-26	-13	0.01
							
Jun	61-90	71.6	61.9	66.8	51	105	0.07
	71-00	72.2	62.6	67.4	10	81	0.09
	Change	0.6	0.7	0.6	-41	-24	0.02
							
Jul	61-90	76.2	65.7	71.0	13	199	0.02
	71-00	75.8	65.9	70.9	0	183	0.03
	Change	-0.4	0.2	-0.1	-13	-16	0.01
							
Aug	61-90	77.8	67.3	72.6	0	240	0.10
	71-00	77.5	67.4	72.5	0	230	0.09
	Change	-0.3	0.1	-0.1	0	-10	-0.01
							
Sep	61-90	77.1	65.6	71.4	19	211	0.24
	71-00	77.0	66.1	71.6	1	199	0.21
	Change	-0.1	0.5	0.2	-18	-12	-0.03
							
Oct	61-90	74.6	60.9	67.7	24	107	0.37
	71-00	74.0	61.2	67.6	12	97	0.44
	Change	-0.6	0.3	-0.1	-12	-10	0.07
							
Nov	61-90	69.9	53.9	62.0	109	19	1.45
	71-00	69.9	53.6	61.8	109	15	1.07
	Change	0.0	-0.3	-0.2	0	-4	-0.38
							
Dec	61-90	66.1	48.8	57.4	243	7	1.57
	71-00	66.3	48.9	57.6	231	1	1.31
	Change	0.2	0.1	0.2	-12	-6	-0.26
							
Annual	61-90	70.8	57.6	64.2	1256	984	9.90
	71-00	70.8	58.1	64.4	1063	866	10.77
	Change	0.0	0.5	0.2	-193	-118	0.87

 

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