Point Forecast: 3 Miles NNE Hercules CA  38.05N 122.22W (Elev. 62 ft)	Last Update: 2:46 am PDT Oct 13, 2026

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Weather Elements Weather/Precipitation Temperature (°F) Dewpoint (°F) Heat Index (°F) Surface Wind  ktmphkm/hm/s Sky Cover (%) Precipitation Potential (%) Relative Humidity (%) Rain Thunder Fog Trans. Wind  ktmphkm/hm/s 20ft Wind  ktmphkm/hm/s

48-Hour Period Starting: 3am Tue, Oct 13 20264am Tue, Oct 13 20265am Tue, Oct 13 20266am Tue, Oct 13 20267am Tue, Oct 13 20268am Tue, Oct 13 20269am Tue, Oct 13 202610am Tue, Oct 13 202611am Tue, Oct 13 202612pm Tue, Oct 13 20261pm Tue, Oct 13 20262pm Tue, Oct 13 20263pm Tue, Oct 13 20264pm Tue, Oct 13 20265pm Tue, Oct 13 20266pm Tue, Oct 13 20267pm Tue, Oct 13 20268pm Tue, Oct 13 20269pm Tue, Oct 13 202610pm Tue, Oct 13 202611pm Tue, Oct 13 202612am Wed, Oct 14 20261am Wed, Oct 14 20262am Wed, Oct 14 20263am Wed, Oct 14 20264am Wed, Oct 14 20265am Wed, Oct 14 20266am Wed, Oct 14 20267am Wed, Oct 14 20268am Wed, Oct 14 20269am Wed, Oct 14 202610am Wed, Oct 14 202611am Wed, Oct 14 202612pm Wed, Oct 14 20261pm Wed, Oct 14 20262pm Wed, Oct 14 20263pm Wed, Oct 14 20264pm Wed, Oct 14 20265pm Wed, Oct 14 20266pm Wed, Oct 14 20267pm Wed, Oct 14 20268pm Wed, Oct 14 20269pm Wed, Oct 14 202610pm Wed, Oct 14 202611pm Wed, Oct 14 202612am Thu, Oct 15 20261am Thu, Oct 15 20262am Thu, Oct 15 20263am Thu, Oct 15 20264am Thu, Oct 15 20265am Thu, Oct 15 20266am Thu, Oct 15 20267am Thu, Oct 15 20268am Thu, Oct 15 20269am Thu, Oct 15 202610am Thu, Oct 15 202611am Thu, Oct 15 202612pm Thu, Oct 15 20261pm Thu, Oct 15 20262pm Thu, Oct 15 20263pm Thu, Oct 15 20264pm Thu, Oct 15 20265pm Thu, Oct 15 20266pm Thu, Oct 15 20267pm Thu, Oct 15 20268pm Thu, Oct 15 20269pm Thu, Oct 15 202610pm Thu, Oct 15 202611pm Thu, Oct 15 202612am Fri, Oct 16 20261am Fri, Oct 16 20262am Fri, Oct 16 20263am Fri, Oct 16 20264am Fri, Oct 16 20265am Fri, Oct 16 20266am Fri, Oct 16 20267am Fri, Oct 16 20268am Fri, Oct 16 20269am Fri, Oct 16 202610am Fri, Oct 16 202611am Fri, Oct 16 202612pm Fri, Oct 16 20261pm Fri, Oct 16 20262pm Fri, Oct 16 20263pm Fri, Oct 16 20264pm Fri, Oct 16 20265pm Fri, Oct 16 20266pm Fri, Oct 16 20267pm Fri, Oct 16 20268pm Fri, Oct 16 20269pm Fri, Oct 16 202610pm Fri, Oct 16 202611pm Fri, Oct 16 202612am Sat, Oct 17 20261am Sat, Oct 17 20262am Sat, Oct 17 20263am Sat, Oct 17 20264am Sat, Oct 17 20265am Sat, Oct 17 20266am Sat, Oct 17 20267am Sat, Oct 17 20268am Sat, Oct 17 20269am Sat, Oct 17 202610am Sat, Oct 17 202611am Sat, Oct 17 202612pm Sat, Oct 17 20261pm Sat, Oct 17 20262pm Sat, Oct 17 2026

Date	10/13																					10/14
Hour (PDT)	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02
Temperature (°F)	51	50	50	50	50	50	53	58	62	67	69	72	74	74	74	70	64	60	58	57	56	55	54	53
Dewpoint (°F)	48	47	47	45	44	43	43	41	38	38	38	36	36	34	34	40	40	41	41	41	42	42	44	45
Heat Index (°F)
Surface Wind (mph)	2	2	1	1	1	2	3	5	6	7	8	8	7	6	7	8	7	6	5	3	2	2	2	3
Wind Dir	SW	SW	SW	SW	SW	S	WSW	NNW	NW	NW	WNW	WNW	WNW	W	W	W	W	WSW	WSW	WSW	SW	SW	SW	SW
Gust
Sky Cover (%)	13	15	15	16	18	12	5	2	1	0	1	0	0	1	1	1	1	4	4	2	5	4	5	4
Precipitation Potential (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Relative Humidity (%)	88	88	88	84	81	77	69	55	42	35	31	28	25	23	24	34	42	49	53	56	57	62	68	74
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date																						10/15
Hour (PDT)	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02
Temperature (°F)	52	52	51	51	51	51	55	59	63	67	71	74	76	77	76	73	67	62	59	58	57	56	55	54
Dewpoint (°F)	45	46	46	45	46	46	48	49	49	48	47	45	44	45	44	46	47	47	47	47	48	48	48	48
Heat Index (°F)													76	77	76
Surface Wind (mph)	2	2	2	2	2	3	3	3	5	5	5	3	3	3	6	6	6	3	3	3	3	3	3	0
Wind Dir	SW	SW	WSW	WSW	WSW	W	W	W	W	W	W	W	W	W	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	S
Gust
Sky Cover (%)	8	13	13	13	13	18	18	18	8	8	8	0	0	0	1	1	1	1	1	1	2	2	2	3
Precipitation Potential (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Relative Humidity (%)	77	80	82	81	82	82	78	69	60	50	42	35	32	32	32	38	48	58	64	68	70	74	76	78
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

International System of Units Forecast Discussion 7-Day Forecast Hourly Weather Graph River Stage Summary 24 Hour Precipitation Summary NWS Office Map