Point Forecast: 2 Miles WSW Portola Valley CA  37.37N 122.25W (Elev. 449 m)	Last Update: 1:26 pm PDT Mar 17, 2025

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Weather Elements Weather/Precipitation Temperature (°C) Dewpoint (°C) Wind Chill (°C) Surface Wind  ktmphkm/hm/s Sky Cover (%) Precipitation Potential (%) Relative Humidity (%) Rain Thunder Snow Freezing Rain Sleet Fog Trans. Wind  ktmphkm/hm/s 20ft Wind  ktmphkm/hm/s

48-Hour Period Starting: 8pm Mon, Mar 17 20259pm Mon, Mar 17 202510pm Mon, Mar 17 202511pm Mon, Mar 17 202512am Tue, Mar 18 20251am Tue, Mar 18 20252am Tue, Mar 18 20253am Tue, Mar 18 20254am Tue, Mar 18 20255am Tue, Mar 18 20256am Tue, Mar 18 20257am Tue, Mar 18 20258am Tue, Mar 18 20259am Tue, Mar 18 202510am Tue, Mar 18 202511am Tue, Mar 18 202512pm Tue, Mar 18 20251pm Tue, Mar 18 20252pm Tue, Mar 18 20253pm Tue, Mar 18 20254pm Tue, Mar 18 20255pm Tue, Mar 18 20256pm Tue, Mar 18 20257pm Tue, Mar 18 20258pm Tue, Mar 18 20259pm Tue, Mar 18 202510pm Tue, Mar 18 202511pm Tue, Mar 18 202512am Wed, Mar 19 20251am Wed, Mar 19 20252am Wed, Mar 19 20253am Wed, Mar 19 20254am Wed, Mar 19 20255am Wed, Mar 19 20256am Wed, Mar 19 20257am Wed, Mar 19 20258am Wed, Mar 19 20259am Wed, Mar 19 202510am Wed, Mar 19 202511am Wed, Mar 19 202512pm Wed, Mar 19 20251pm Wed, Mar 19 20252pm Wed, Mar 19 20253pm Wed, Mar 19 20254pm Wed, Mar 19 20255pm Wed, Mar 19 20256pm Wed, Mar 19 20257pm Wed, Mar 19 20258pm Wed, Mar 19 20259pm Wed, Mar 19 202510pm Wed, Mar 19 202511pm Wed, Mar 19 202512am Thu, Mar 20 20251am Thu, Mar 20 20252am Thu, Mar 20 20253am Thu, Mar 20 20254am Thu, Mar 20 20255am Thu, Mar 20 20256am Thu, Mar 20 20257am Thu, Mar 20 20258am Thu, Mar 20 20259am Thu, Mar 20 202510am Thu, Mar 20 202511am Thu, Mar 20 202512pm Thu, Mar 20 20251pm Thu, Mar 20 20252pm Thu, Mar 20 20253pm Thu, Mar 20 20254pm Thu, Mar 20 20255pm Thu, Mar 20 20256pm Thu, Mar 20 20257pm Thu, Mar 20 20258pm Thu, Mar 20 20259pm Thu, Mar 20 202510pm Thu, Mar 20 202511pm Thu, Mar 20 202512am Fri, Mar 21 20251am Fri, Mar 21 20252am Fri, Mar 21 20253am Fri, Mar 21 20254am Fri, Mar 21 20255am Fri, Mar 21 20256am Fri, Mar 21 20257am Fri, Mar 21 20258am Fri, Mar 21 20259am Fri, Mar 21 202510am Fri, Mar 21 202511am Fri, Mar 21 202512pm Fri, Mar 21 20251pm Fri, Mar 21 20252pm Fri, Mar 21 20253pm Fri, Mar 21 20254pm Fri, Mar 21 20255pm Fri, Mar 21 20256pm Fri, Mar 21 20257pm Fri, Mar 21 20258pm Fri, Mar 21 20259pm Fri, Mar 21 202510pm Fri, Mar 21 202511pm Fri, Mar 21 202512am Sat, Mar 22 20251am Sat, Mar 22 20252am Sat, Mar 22 20253am Sat, Mar 22 20254am Sat, Mar 22 20255am Sat, Mar 22 20256am Sat, Mar 22 20257am Sat, Mar 22 2025

Date	03/17				03/18
Hour (PDT)	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19
Temperature (°C)	7	6	7	7	6	6	6	5	5	4	4	4	4	6	7	7	9	9	10	11	11	10	9	8
Dewpoint (°C)	3	3	3	3	3	2	2	1	1	1	0	1	1	1	1	2	2	2	2	3	2	2	3	2
Wind Chill (°C)	2	1	2	2	2	1	1	0	1	0	-1	1	1	2	4	5	7	8	8			8	7	5
Surface Wind (mph)	22	22	22	22	21	20	18	18	16	15	14	11	9	9	8	7	7	8	9	9	9	10	10	10
Wind Dir	WNW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NNW	NNW	NNW	N	N	N	N	N	NNW	NNW	NW	NW	NW	NW
Gust	37	37	36	34	33	31	30
Sky Cover (%)	57	54	50	18	10	10	10	11	10	10	7	10	9	2	1	2	1	1	8	16	14	15	6	23
Precipitation Potential (%)	25	25	25	10	10	10	10	10	10	1	1	1	1	1	1	2	2	2	2	2	2	0	0	0
Relative Humidity (%)	82	81	77	77	78	78	77	78	76	76	77	76	76	74	69	68	62	60	55	57	55	59	63	69
Rain	Chc	Chc	Chc	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date					03/19
Hour (PDT)	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19
Temperature (°C)	7	7	6	6	6	5	4	4	4	5	5	6	6	7	8	9	10	11	11	11	11	11	10	9
Dewpoint (°C)	2	2	2	2	2	2	2	1	1	1	1	1	1	2	2	3	3	3	3	2	2	2	3	3
Wind Chill (°C)	4	4	4	4	3	3	3	3	3	5	5	5	6	7	8	8	9						8	7
Surface Wind (mph)	9	8	7	6	6	6	3	3	3	2	2	2	2	2	2	3	3	3	6	6	6	8	8	8
Wind Dir	WNW	NW	NW	NW	NW	NW	N	N	N	SE	SE	SE	ESE	ESE	ESE	SW	SW	SW	WSW	WSW	WSW	SW	SW	SW
Gust
Sky Cover (%)	13	20	24	28	28	28	21	21	21	28	28	28	44	44	44	64	64	64	64	64	64	87	87	87
Precipitation Potential (%)	0	0	0	0	0	0	0	0	0	1	1	1	1	1	1	8	8	8	8	8	8	79	79	79
Relative Humidity (%)	71	74	76	77	79	80	80	79	77	75	74	74	72	71	68	65	62	60	58	56	55	56	61	66
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	Ocnl	Ocnl	Ocnl
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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