Point Forecast: 8 Miles SSW Saint Helena CA  38.41N 122.55W (Elev. 492 ft)	Last Update: 3:29 am PDT May 4, 2024

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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 Lightning Activity Level Trans. Wind  ktmphkm/hm/s 20ft Wind  ktmphkm/hm/s

48-Hour Period Starting: 5am Sat, May 4 20246am Sat, May 4 20247am Sat, May 4 20248am Sat, May 4 20249am Sat, May 4 202410am Sat, May 4 202411am Sat, May 4 202412pm Sat, May 4 20241pm Sat, May 4 20242pm Sat, May 4 20243pm Sat, May 4 20244pm Sat, May 4 20245pm Sat, May 4 20246pm Sat, May 4 20247pm Sat, May 4 20248pm Sat, May 4 20249pm Sat, May 4 202410pm Sat, May 4 202411pm Sat, May 4 202412am Sun, May 5 20241am Sun, May 5 20242am Sun, May 5 20243am Sun, May 5 20244am Sun, May 5 20245am Sun, May 5 20246am Sun, May 5 20247am Sun, May 5 20248am Sun, May 5 20249am Sun, May 5 202410am Sun, May 5 202411am Sun, May 5 202412pm Sun, May 5 20241pm Sun, May 5 20242pm Sun, May 5 20243pm Sun, May 5 20244pm Sun, May 5 20245pm Sun, May 5 20246pm Sun, May 5 20247pm Sun, May 5 20248pm Sun, May 5 20249pm Sun, May 5 202410pm Sun, May 5 202411pm Sun, May 5 202412am Mon, May 6 20241am Mon, May 6 20242am Mon, May 6 20243am Mon, May 6 20244am Mon, May 6 20245am Mon, May 6 20246am Mon, May 6 20247am Mon, May 6 20248am Mon, May 6 20249am Mon, May 6 202410am Mon, May 6 202411am Mon, May 6 202412pm Mon, May 6 20241pm Mon, May 6 20242pm Mon, May 6 20243pm Mon, May 6 20244pm Mon, May 6 20245pm Mon, May 6 20246pm Mon, May 6 20247pm Mon, May 6 20248pm Mon, May 6 20249pm Mon, May 6 202410pm Mon, May 6 202411pm Mon, May 6 202412am Tue, May 7 20241am Tue, May 7 20242am Tue, May 7 20243am Tue, May 7 20244am Tue, May 7 20245am Tue, May 7 20246am Tue, May 7 20247am Tue, May 7 20248am Tue, May 7 20249am Tue, May 7 202410am Tue, May 7 202411am Tue, May 7 202412pm Tue, May 7 20241pm Tue, May 7 20242pm Tue, May 7 20243pm Tue, May 7 20244pm Tue, May 7 20245pm Tue, May 7 20246pm Tue, May 7 20247pm Tue, May 7 20248pm Tue, May 7 20249pm Tue, May 7 202410pm Tue, May 7 202411pm Tue, May 7 202412am Wed, May 8 20241am Wed, May 8 20242am Wed, May 8 20243am Wed, May 8 20244am Wed, May 8 20245am Wed, May 8 20246am Wed, May 8 20247am Wed, May 8 20248am Wed, May 8 20249am Wed, May 8 202410am Wed, May 8 202411am Wed, May 8 202412pm Wed, May 8 20241pm Wed, May 8 20242pm Wed, May 8 20243pm Wed, May 8 20244pm Wed, May 8 2024

Date	05/04																			05/05
Hour (PDT)	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04
Temperature (°F)	51	49	50	50	49	50	50	53	51	53	54	54	54	52	51	48	47	46	45	44	44	42	42	41
Dewpoint (°F)	50	48	50	49	48	48	48	50	46	46	45	44	42	41	41	40	40	40	39	39	39	39	38	38
Heat Index (°F)
Surface Wind (mph)	13	15	18	21	16	14	13	14	14	14	15	15	17	15	16	17	17	14	13	11	11	10	10	10
Wind Dir	SSW	SSW	SSW	SW	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	WNW	WNW
Gust	18	23	28	31	23	22	18	20	21	21	23	23	25	23	23	25	25	22	20		18
Sky Cover (%)	99	99	99	99	99	99	91	88	84	84	84	84	57	57	57	32	29	26	21	22	26	18	11	13
Precipitation Potential (%)	77	90	95	95	95	94	89	80	37	21	46	33	5	4	4	4	3	3	4	4	4	3	2	2
Relative Humidity (%)	95	96	98	95	96	93	92	88	83	78	72	69	66	66	69	74	76	78	80	84	84	87	86	88
Rain	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date																				05/06
Hour (PDT)	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04
Temperature (°F)	40	41	42	44	49	53	57	59	61	62	62	61	60	58	55	52	50	48	47	45	44	43	42	42
Dewpoint (°F)	37	38	38	38	39	40	40	40	40	40	40	41	42	42	41	41	40	40	40	40	40	40	39	39
Heat Index (°F)
Surface Wind (mph)	9	9	10	10	9	7	8	8	8	10	10	10	13	13	13	13	13	13	8	8	8	7	7	7
Wind Dir	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W
Gust													18	18	18	18	18	18
Sky Cover (%)	57	11	4	8	6	5	3	3	3	16	16	16	13	13	13	9	9	9	7	7	7	11	11	11
Precipitation Potential (%)	1	1	1	1	1	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Relative Humidity (%)	87	88	84	77	68	59	52	48	45	45	46	48	52	56	60	65	69	73	77	81	84	87	88	89
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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