Point Forecast: 9 Miles SE Lake Berryessa CA  38.5N 122.14W (Elev. 948 ft)	Last Update: 11:26 pm PDT Jul 27, 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: 1am Tue, Jul 28 20262am Tue, Jul 28 20263am Tue, Jul 28 20264am Tue, Jul 28 20265am Tue, Jul 28 20266am Tue, Jul 28 20267am Tue, Jul 28 20268am Tue, Jul 28 20269am Tue, Jul 28 202610am Tue, Jul 28 202611am Tue, Jul 28 202612pm Tue, Jul 28 20261pm Tue, Jul 28 20262pm Tue, Jul 28 20263pm Tue, Jul 28 20264pm Tue, Jul 28 20265pm Tue, Jul 28 20266pm Tue, Jul 28 20267pm Tue, Jul 28 20268pm Tue, Jul 28 20269pm Tue, Jul 28 202610pm Tue, Jul 28 202611pm Tue, Jul 28 202612am Wed, Jul 29 20261am Wed, Jul 29 20262am Wed, Jul 29 20263am Wed, Jul 29 20264am Wed, Jul 29 20265am Wed, Jul 29 20266am Wed, Jul 29 20267am Wed, Jul 29 20268am Wed, Jul 29 20269am Wed, Jul 29 202610am Wed, Jul 29 202611am Wed, Jul 29 202612pm Wed, Jul 29 20261pm Wed, Jul 29 20262pm Wed, Jul 29 20263pm Wed, Jul 29 20264pm Wed, Jul 29 20265pm Wed, Jul 29 20266pm Wed, Jul 29 20267pm Wed, Jul 29 20268pm Wed, Jul 29 20269pm Wed, Jul 29 202610pm Wed, Jul 29 202611pm Wed, Jul 29 202612am Thu, Jul 30 20261am Thu, Jul 30 20262am Thu, Jul 30 20263am Thu, Jul 30 20264am Thu, Jul 30 20265am Thu, Jul 30 20266am Thu, Jul 30 20267am Thu, Jul 30 20268am Thu, Jul 30 20269am Thu, Jul 30 202610am Thu, Jul 30 202611am Thu, Jul 30 202612pm Thu, Jul 30 20261pm Thu, Jul 30 20262pm Thu, Jul 30 20263pm Thu, Jul 30 20264pm Thu, Jul 30 20265pm Thu, Jul 30 20266pm Thu, Jul 30 20267pm Thu, Jul 30 20268pm Thu, Jul 30 20269pm Thu, Jul 30 202610pm Thu, Jul 30 202611pm Thu, Jul 30 202612am Fri, Jul 31 20261am Fri, Jul 31 20262am Fri, Jul 31 20263am Fri, Jul 31 20264am Fri, Jul 31 20265am Fri, Jul 31 20266am Fri, Jul 31 20267am Fri, Jul 31 20268am Fri, Jul 31 20269am Fri, Jul 31 202610am Fri, Jul 31 202611am Fri, Jul 31 202612pm Fri, Jul 31 20261pm Fri, Jul 31 20262pm Fri, Jul 31 20263pm Fri, Jul 31 20264pm Fri, Jul 31 20265pm Fri, Jul 31 20266pm Fri, Jul 31 20267pm Fri, Jul 31 20268pm Fri, Jul 31 20269pm Fri, Jul 31 202610pm Fri, Jul 31 202611pm Fri, Jul 31 202612am Sat, Aug 1 20261am Sat, Aug 1 20262am Sat, Aug 1 20263am Sat, Aug 1 20264am Sat, Aug 1 20265am Sat, Aug 1 20266am Sat, Aug 1 20267am Sat, Aug 1 20268am Sat, Aug 1 20269am Sat, Aug 1 202610am Sat, Aug 1 202611am Sat, Aug 1 202612pm Sat, Aug 1 2026

Date	07/28																							07/29
Hour (PDT)	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00
Temperature (°F)	67	65	62	60	59	59	60	64	68	76	80	85	89	91	93	93	93	92	90	86	81	78	75	73
Dewpoint (°F)	51	51	50	50	50	50	50	51	50	52	53	53	53	52	52	52	53	55	56	55	55	55	55	54
Heat Index (°F)										76	80	83	87	89	90	90	90	89	88	84	81	78	75
Surface Wind (mph)	2	1	1	1	1	1	1	1	1	2	2	2	2	2	3	6	7	7	7	6	5	3	2	2
Wind Dir	WSW	WSW	WSW	WSW	WSW	WSW	WSW	W	NW	NNE	ENE	E	ESE	SW	SW	SW	SW	WSW	WSW	WSW	WSW	WSW	WSW	WSW
Gust
Sky Cover (%)	2	1	1	1	1	2	2	3	1	1	1	0	1	0	3	3	1	2	2	3	2	1	2	1
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 (%)	55	60	65	69	73	72	70	62	53	45	38	33	29	26	25	25	27	29	32	36	40	44	49	52
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date																								07/30
Hour (PDT)	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00
Temperature (°F)	70	67	64	63	62	61	62	66	70	77	82	88	91	93	94	94	94	93	90	87	84	80	76	72
Dewpoint (°F)	54	54	53	54	54	54	54	55	54	56	56	57	56	55	55	55	55	56	56	56	55	54	54	53
Heat Index (°F)										77	82	87	89	91	93	92	92	91	89	85	82	80	76
Surface Wind (mph)	1	1	1	1	0	1	1	1	1	2	2	2	2	6	6	6	7	7	7	5	5	5	2	2
Wind Dir	WSW	WSW	WSW	WSW	WSW	WSW	W	W	W	W	S	S	S	SW	SW	SW	SW	SW	SW	SW	SW	SW	WSW	WSW
Gust
Sky Cover (%)	1	1	0	0	1	3	4	3	0	0	1	1	1	4	4	4	3	3	3	1	1	1	0	0
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 (%)	58	64	68	72	76	75	74	67	58	48	41	36	31	28	27	27	27	29	31	34	38	41	46	50
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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