All countries

California

San Mateo

Portola Valley

	md
reliable prognosis

This is the website from which the forecast is printed. To learn more, please visit the website.

Weather in Portola Valley

See on map

Weather archive at the weather station ( 28 km, +12.8 °C )

8 °C

feels like

7 °C

9 hours ago at the airport (14 km) it was +14 °C, clear with cloudy periods, normal air pressure, gentle breeze (5 m/s) blowing from the west-northwest. Weather archive at the airport

Today we expect +13..+8 °C°F, +55..+46 °C°F, moderate rain, fog, gentle breeze. Tomorrow: +8..+14 °C°F, +46..+57 °C°F, without precipitation, moderate breeze.

7 days

Today

Tomorrow

Mon

Tue

Wed

Thu

Fri

Today, Sat, May 4				Tomorrow, Sun, May 5				Mon, May 6				Tue, May 7				Wed, May 8				Thu, May 9				Fri, May 10
Local time	11	17	23	05	11	17	23	05	11	17	23	05	11	17	23	05	11	17	23	05	11	17	23	05	11	17
Cloudiness, % 1/10 oktas
Precipitation, mm Precipitation, inches
Fog, %	16							13			5	13			11	16
Temperature, °C °F	+13 +55	+10 +50	+7 +45	+4 +39	+13 +55	+13 +55	+6 +43	+2 +36	+15 +59	+14 +57	+9 +48	+5 +41	+15 +59	+17 +63	+8 +46	+4 +39	+21 +70	+21 +70	+12 +54	+8 +46	+23 +73	+28 +82	+16 +61	+12 +54	+26 +79	+30 +86
Feels like, °C °F		+8 +46	+5 +41	+1 +34			+4 +39	+1 +34			+7 +45	+2 +36				+3 +37
Pressure, mmHg inches mbar hPa	744 29.29 992 992	746 29.37 995 995	747 29.41 996 996	749 29.49 999 999	751 29.57 1001 1001	752 29.61 1003 1003	753 29.65 1004 1004	752 29.61 1003 1003	753 29.65 1004 1004	752 29.61 1003 1003	752 29.61 1003 1003	751 29.57 1001 1001	751 29.57 1001 1001	750 29.53 1000 1000	749 29.49 999 999	748 29.45 997 997	749 29.49 999 999	747 29.41 996 996	747 29.41 996 996	746 29.37 995 995	748 29.45 997 997	747 29.41 996 996	747 29.41 996 996	746 29.37 995 995	748 29.45 997 997	746 29.37 995 995
Wind: speed , m/s km/h mph knots Bft	3 11 7 6 2	3 11 7 6 2	3 11 7 6 2	3 11 7 6 2	5 18 11 10 3	5 18 11 10 3	3 11 7 6 2	1 4 2 2 1	3 11 7 6 2	4 14 9 8 3	4 14 9 8 3	3 11 7 6 2	2 7 4 4 2	4 14 9 8 3	1 4 2 2 1	1 4 2 2 1	1 4 2 2 1	3 11 7 6 2	1 4 2 2 1	0 0 0 0 0	2 7 4 4 2	3 11 7 6 2	0	1 4 2 2 1	2 7 4 4 2	2 7 4 4 2
gusts, m/s km/h mph knots Bft	8 29 18 16 5	8 29 18 16 5	7 25 16 14 4		11 40 25 21 6	13 47 29 25 6	6 22 13 12 4	4 14 9 8 3	7 25 16 14 4	10 36 22 19 5	8 29 18 16 5		7 25 16 14 4	10 36 22 19 5	4 14 9 8 3		6 22 13 12 4	7 25 16 14 4		3 11 7 6 2	8 29 18 16 5	9 32 20 17 5			5 18 11 10 3	6 22 13 12 4
direction	W	W	W	W	NW	W	W	W	W	W	NW	NW	N	NW	W	W	N	NW	SW	E	NE	NE	calm	E	NE	N
Humidity, %	95	86	78	87	56	52	81	92	74	78	84	93	63	53	79	89	32	45	70	71	33	30	66	57	31	22
Sun: rise set	06:09	20:01			06:08	20:02			06:07	20:03			06:06	20:04			06:05	20:05			06:04	20:06		06:03	20:07
Moon: rise set	04:12	16:21			04:39	17:34			05:07	18:48			05:38	20:05			06:13	21:21			06:56	22:35		07:47	23:41
phase

Show more (Humidity. Sun, Moon: rise, set, phase)

more information about weather
is available on the website rp5.md

Weather News

39 minutes ago, a strong breeze ( 13 m/s 47 km/h 29 miles/hour 25 knots 6 Bft) with gusts up to 17 m/s 61 km/h 38 miles/hour 33 knots7 Bft was observed in Tehama in Red Bluff (airport).

39 minutes ago, heavy precipitation (37 mm 1.46 inches / 6 hours) was observed in Humboldt in Eureka.

24 minutes ago, the minimum air temperature ( 0 ^oC +32 ^oF ) was observed in San Bernardino County in Big Bear City (airport).

During the last 12 hours the maximum air temperature ( +29 ^oC +84 ^oF ) was observed in Fresno County in Fresno (airport).

less

Today, Saturday, May 4																			Tomorrow, Sunday, May 5																								Monday, May 6												Tuesday, May 7								Wednesday, May 8								Thursday, May 9							Friday, May 10
Local time	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	08	11	14	17	20	23	02	05	08	11	14	17	20	23	02	05	08	11	14	17	20	23	02	05	08	11	14	17	23	05	11	17	Local time
Cloudiness, % 1/10 oktas																																																																																	Cloudiness, % 1/10 oktas
Precipitation, mm Precipitation, inches																																																																																	Precipitation, mm Precipitation, inches
Fog, %	21	21	13	5	5	16			13	5																																	5	5	5	11	11	13						5		13						11	11	16																	Fog, %
Temperature, °C °F	+8 +46	+8 +46	+11 +52	+12 +54	+12 +54	+13 +55	+10 +50	+8 +46	+8 +46	+9 +48	+10 +50	+10 +50	+10 +50	+10 +50	+8 +46	+7 +45	+7 +45	+7 +45	+5 +41	+5 +41	+5 +41	+5 +41	+5 +41	+4 +39	+4 +39	+4 +39	+8 +46	+10 +50	+11 +52	+13 +55	+13 +55	+12 +54	+13 +55	+14 +57	+13 +55	+13 +55	+12 +54	+11 +52	+9 +48	+7 +45	+7 +45	+6 +43	+5 +41	+5 +41	+4 +39	+4 +39	+3 +37	+2 +36	+9 +48	+15 +59	+14 +57	+14 +57	+11 +52	+9 +48	+7 +45	+5 +41	+9 +48	+15 +59	+17 +63	+17 +63	+12 +54	+8 +46	+6 +43	+4 +39	+11 +52	+21 +70	+22 +72	+21 +70	+16 +61	+12 +54	+9 +48	+8 +46	+16 +61	+23 +73	+24 +75	+28 +82	+16 +61	+12 +54	+26 +79	+30 +86	Temperature, °C °F
Feels like, °C °F	+7 +45	+6 +43					+8 +46	+6 +43	+7 +45	+8 +46	+8 +46	+8 +46	+8 +46	+8 +46	+6 +43	+5 +41	+4 +39	+5 +41	+2 +36	+2 +36	+2 +36	+2 +36	+2 +36	+1 +34	+1 +34	+1 +34	+5 +41	+8 +46											+7 +45	+5 +41	+5 +41	+4 +39	+3 +37	+3 +37	+2 +36	+2 +36	+2 +36	+1 +34						+7 +45	+4 +39	+2 +36								+3 +37																	Feels like, °C °F
Pressure, mmHg inches mbar hPa	744 29.29 992 992	745 29.33 993 993	744 29.29 992 992	744 29.29 992 992	743 29.25 991 991	744 29.29 992 992	745 29.33 993 993	745 29.33 993 993	745 29.33 993 993	745 29.33 993 993	746 29.37 995 995	746 29.37 995 995	746 29.37 995 995	746 29.37 995 995	746 29.37 995 995	747 29.41 996 996	747 29.41 996 996	747 29.41 996 996	748 29.45 997 997	748 29.45 997 997	748 29.45 997 997	749 29.49 999 999	749 29.49 999 999	749 29.49 999 999	749 29.49 999 999	750 29.53 1000 1000	750 29.53 1000 1000	750 29.53 1000 1000	751 29.57 1001 1001	751 29.57 1001 1001	751 29.57 1001 1001	752 29.61 1003 1003	752 29.61 1003 1003	752 29.61 1003 1003	752 29.61 1003 1003	752 29.61 1003 1003	752 29.61 1003 1003	752 29.61 1003 1003	752 29.61 1003 1003	752 29.61 1003 1003	753 29.65 1004 1004	753 29.65 1004 1004	753 29.65 1004 1004	752 29.61 1003 1003	752 29.61 1003 1003	752 29.61 1003 1003	752 29.61 1003 1003	752 29.61 1003 1003	752 29.61 1003 1003	753 29.65 1004 1004	753 29.65 1004 1004	752 29.61 1003 1003	752 29.61 1003 1003	752 29.61 1003 1003	751 29.57 1001 1001	751 29.57 1001 1001	751 29.57 1001 1001	751 29.57 1001 1001	751 29.57 1001 1001	750 29.53 1000 1000	749 29.49 999 999	749 29.49 999 999	748 29.45 997 997	748 29.45 997 997	748 29.45 997 997	749 29.49 999 999	748 29.45 997 997	747 29.41 996 996	747 29.41 996 996	747 29.41 996 996	746 29.37 995 995	746 29.37 995 995	747 29.41 996 996	748 29.45 997 997	747 29.41 996 996	747 29.41 996 996	747 29.41 996 996	746 29.37 995 995	748 29.45 997 997	746 29.37 995 995	Pressure, mmHg inches mbar hPa
Wind: speed , m/s km/h mph knots Bft	2 7 4 4 2	3 11 7 6 2	3 11 7 6 2	5 18 11 10 3	5 18 11 10 3	3 11 7 6 2	3 11 7 6 2	3 11 7 6 2	2 7 4 4 2	2 7 4 4 2	3 11 7 6 2	3 11 7 6 2	4 14 9 8 3	3 11 7 6 2	4 14 9 8 3	3 11 7 6 2	4 14 9 8 3	3 11 7 6 2	3 11 7 6 2	3 11 7 6 2	3 11 7 6 2	3 11 7 6 2	3 11 7 6 2	3 11 7 6 2	3 11 7 6 2	3 11 7 6 2	5 18 11 10 3	5 18 11 10 3	4 14 9 8 3	5 18 11 10 3	5 18 11 10 3	5 18 11 10 3	5 18 11 10 3	6 22 13 12 4	5 18 11 10 3	5 18 11 10 3	5 18 11 10 3	5 18 11 10 3	4 14 9 8 3	3 11 7 6 2	3 11 7 6 2	3 11 7 6 2	2 7 4 4 2	2 7 4 4 2	2 7 4 4 2	2 7 4 4 2	1 4 2 2 1	1 4 2 2 1	1 4 2 2 1	3 11 7 6 2	3 11 7 6 2	4 14 9 8 3	4 14 9 8 3	4 14 9 8 3	4 14 9 8 3	3 11 7 6 2	1 4 2 2 1	2 7 4 4 2	4 14 9 8 3	4 14 9 8 3	3 11 7 6 2	1 4 2 2 1	1 4 2 2 1	1 4 2 2 1	0	1 4 2 2 1	2 7 4 4 2	3 11 7 6 2	2 7 4 4 2	1 4 2 2 1	0	0 0 0 0 0	1 4 2 2 1	2 7 4 4 2	2 7 4 4 2	3 11 7 6 2	0	1 4 2 2 1	2 7 4 4 2	2 7 4 4 2	Wind: speed , m/s km/h mph knots Bft
gusts, m/s km/h mph knots Bft			6 22 13 12 4	9 32 20 17 5	10 36 22 19 5	8 29 18 16 5	8 29 18 16 5	7 25 16 14 4	5 18 11 10 3	5 18 11 10 3	8 29 18 16 5	8 29 18 16 5	8 29 18 16 5	8 29 18 16 5	8 29 18 16 5	7 25 16 14 4	8 29 18 16 5	7 25 16 14 4	6 22 13 12 4	6 22 13 12 4	6 22 13 12 4	7 25 16 14 4	6 22 13 12 4			7 25 16 14 4	10 36 22 19 5	11 40 25 21 6	10 36 22 19 5	11 40 25 21 6	13 47 29 25 6	12 43 27 23 6	13 47 29 25 6	13 47 29 25 6	13 47 29 25 6	13 47 29 25 6	12 43 27 23 6	12 43 27 23 6	9 32 20 17 5	7 25 16 14 4	7 25 16 14 4	6 22 13 12 4	5 18 11 10 3	5 18 11 10 3	5 18 11 10 3		4 14 9 8 3	4 14 9 8 3	4 14 9 8 3	7 25 16 14 4	9 32 20 17 5	10 36 22 19 5	8 29 18 16 5	8 29 18 16 5	9 32 20 17 5			7 25 16 14 4	10 36 22 19 5	10 36 22 19 5	6 22 13 12 4	4 14 9 8 3				6 22 13 12 4	7 25 16 14 4	7 25 16 14 4	5 18 11 10 3			3 11 7 6 2		8 29 18 16 5	7 25 16 14 4	9 32 20 17 5			5 18 11 10 3	6 22 13 12 4	gusts, m/s km/h mph knots Bft
direction	S	S	S	S	S	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	NW	NW	NW	NW	NW	NW	NW	W	W	W	W	W	NW	W	W	W	W	W	W	NW	NW	NW	W	W	W	W	W	W	NW	NW	NW	N	N	NW	NW	W	W	W	W	calm	N	N	NW	W	SW	calm	E	NE	NE	NE	NE	calm	E	NE	N	direction
Humidity, %	95	96	92	92	94	95	91	96	100	96	88	86	83	77	76	76	74	78	80	82	82	85	84	87	86	84	73	66	62	56	52	56	54	52	54	52	51	53	60	69	75	81	83	85	86	89	90	92	81	74	78	78	80	84	84	93	82	63	54	53	66	79	84	89	74	32	41	45	57	70	75	71	53	33	37	30	66	57	31	22	Humidity, %
Sun: rise set								06:09		20:01																			06:08		20:02																06:07		20:03								06:06		20:04						06:05		20:05						06:04		20:06			06:03	20:07		Sun: rise set
Moon: rise set								04:12		16:21																			04:39		17:34																05:07		18:48								05:38		20:05						06:13		21:21						06:56		22:35			07:47	23:41		Moon: rise set
phase																																																																																	phase