Point Forecast: 2 Miles WSW Portola Valley CA  37.37N 122.25W (Elev. 449 m)	Last Update: 1:26 pm PDT Jun 13, 2025

[hide menu]

Weather Elements Weather/Precipitation Temperature (°C) Dewpoint (°C) Heat Index (°C) 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: 7pm Fri, Jun 13 20258pm Fri, Jun 13 20259pm Fri, Jun 13 202510pm Fri, Jun 13 202511pm Fri, Jun 13 202512am Sat, Jun 14 20251am Sat, Jun 14 20252am Sat, Jun 14 20253am Sat, Jun 14 20254am Sat, Jun 14 20255am Sat, Jun 14 20256am Sat, Jun 14 20257am Sat, Jun 14 20258am Sat, Jun 14 20259am Sat, Jun 14 202510am Sat, Jun 14 202511am Sat, Jun 14 202512pm Sat, Jun 14 20251pm Sat, Jun 14 20252pm Sat, Jun 14 20253pm Sat, Jun 14 20254pm Sat, Jun 14 20255pm Sat, Jun 14 20256pm Sat, Jun 14 20257pm Sat, Jun 14 20258pm Sat, Jun 14 20259pm Sat, Jun 14 202510pm Sat, Jun 14 202511pm Sat, Jun 14 202512am Sun, Jun 15 20251am Sun, Jun 15 20252am Sun, Jun 15 20253am Sun, Jun 15 20254am Sun, Jun 15 20255am Sun, Jun 15 20256am Sun, Jun 15 20257am Sun, Jun 15 20258am Sun, Jun 15 20259am Sun, Jun 15 202510am Sun, Jun 15 202511am Sun, Jun 15 202512pm Sun, Jun 15 20251pm Sun, Jun 15 20252pm Sun, Jun 15 20253pm Sun, Jun 15 20254pm Sun, Jun 15 20255pm Sun, Jun 15 20256pm Sun, Jun 15 20257pm Sun, Jun 15 20258pm Sun, Jun 15 20259pm Sun, Jun 15 202510pm Sun, Jun 15 202511pm Sun, Jun 15 202512am Mon, Jun 16 20251am Mon, Jun 16 20252am Mon, Jun 16 20253am Mon, Jun 16 20254am Mon, Jun 16 20255am Mon, Jun 16 20256am Mon, Jun 16 20257am Mon, Jun 16 20258am Mon, Jun 16 20259am Mon, Jun 16 202510am Mon, Jun 16 202511am Mon, Jun 16 202512pm Mon, Jun 16 20251pm Mon, Jun 16 20252pm Mon, Jun 16 20253pm Mon, Jun 16 20254pm Mon, Jun 16 20255pm Mon, Jun 16 20256pm Mon, Jun 16 20257pm Mon, Jun 16 20258pm Mon, Jun 16 20259pm Mon, Jun 16 202510pm Mon, Jun 16 202511pm Mon, Jun 16 202512am Tue, Jun 17 20251am Tue, Jun 17 20252am Tue, Jun 17 20253am Tue, Jun 17 20254am Tue, Jun 17 20255am Tue, Jun 17 20256am Tue, Jun 17 20257am Tue, Jun 17 20258am Tue, Jun 17 20259am Tue, Jun 17 202510am Tue, Jun 17 202511am Tue, Jun 17 202512pm Tue, Jun 17 20251pm Tue, Jun 17 20252pm Tue, Jun 17 20253pm Tue, Jun 17 20254pm Tue, Jun 17 20255pm Tue, Jun 17 20256pm Tue, Jun 17 20257pm Tue, Jun 17 20258pm Tue, Jun 17 20259pm Tue, Jun 17 202510pm Tue, Jun 17 202511pm Tue, Jun 17 202512am Wed, Jun 18 20251am Wed, Jun 18 20252am Wed, Jun 18 20253am Wed, Jun 18 20254am Wed, Jun 18 20255am Wed, Jun 18 20256am Wed, Jun 18 2025

Date	06/13					06/14
Hour (PDT)	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18
Temperature (°C)	15	13	12	11	11	11	11	10	10	9	9	9	9	10	11	12	13	14	16	16	16	17	16	15
Dewpoint (°C)	9	8	7	6	6	6	6	6	6	6	6	6	6	7	8	8	9	9	10	9	10	10	10	9
Heat Index (°C)
Surface Wind (mph)	11	10	10	9	9	9	8	8	8	9	9	8	8	8	7	8	8	9	10	11	11	13	13	11
Wind Dir	W	W	WSW	WSW	WSW	SW	SW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW
Gust
Sky Cover (%)	28	20	13	8	8	21	38	37	33	34	42	48	54	53	57	52	51	52	33	50	33	28	18	19
Precipitation Potential (%)	1	1	1	1	1	1	1	1	1	1	2	2	2	2	2	2	1	1	1	1	1	1	0	0
Relative Humidity (%)	66	67	68	70	72	72	72	75	76	77	79	79	78	84	82	80	74	72	67	66	66	66	68	70
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date						06/15
Hour (PDT)	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18
Temperature (°C)	14	12	11	11	10	10	10	10	9	9	9	9	9	10	11	13	14	16	17	17	18	17	17	16
Dewpoint (°C)	9	8	7	7	7	6	6	6	6	6	6	6	7	7	8	8	9	9	10	11	11	11	11	10
Heat Index (°C)
Surface Wind (mph)	11	10	9	9	8	8	8	8	8	8	7	7	7	6	6	6	8	8	8	10	10	10	11	11
Wind Dir	WSW	W	WSW	WSW	W	W	W	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	W	W	W	W	W	W	W	W
Gust
Sky Cover (%)	27	26	30	21	12	12	12	24	24	24	47	47	47	48	48	48	18	18	18	11	11	11	14	14
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 (%)	73	76	75	76	78	77	76	75	76	78	80	81	82	81	79	75	71	68	66	65	64	65	67	69
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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