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Weather in Portola Valley

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Weather archive at the weather station ( 28 km, +15 °C )

13 °C

2 hours ago at the airport (14 km) it was +16 °C, clear, normal air pressure, high humidity (77%), gentle breeze (5 m/s) blowing from the north-northwest. Weather archive at the airport

Tomorrow we expect +13..+19 °C°F, +55..+66 °C°F, without precipitation, gentle breeze. The day after tomorrow: +18..+15 °C°F, +64..+59 °C°F, without precipitation, gentle breeze.

7 days

Tomorrow

Tue

Wed

Thu

Fri

Sat

Sun

Tomorrow, Mon, August 31					Tue, September 1				Wed, September 2				Thu, September 3				Fri, September 4				Sat, September 5				Sun, September 6
Local time	05	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
Temperature, °C °F	+12 +54	+16 +61	+18 +64	+13 +55	+13 +55	+15 +59	+18 +64	+14 +57	+13 +55	+15 +59	+20 +68	+14 +57	+13 +55	+17 +63	+21 +70	+16 +61	+15 +59	+14 +57	+18 +64	+13 +55	+11 +52	+16 +61	+20 +68	+13 +55	+11 +52	+17 +63	+23 +73
Pressure, mmHg inches mbar hPa	747 29.41 996 996	748 29.45 997 997	747 29.41 996 996	748 29.45 997 997	748 29.45 997 997	750 29.53 1000 1000	749 29.49 999 999	750 29.53 1000 1000	750 29.53 1000 1000	751 29.57 1001 1001	750 29.53 1000 1000	750 29.53 1000 1000	749 29.49 999 999	749 29.49 999 999	747 29.41 996 996	746 29.37 995 995	745 29.33 993 993	746 29.37 995 995	746 29.37 995 995	747 29.41 996 996	746 29.37 995 995	746 29.37 995 995	745 29.33 993 993	746 29.37 995 995	746 29.37 995 995	746 29.37 995 995	744 29.29 992 992
Wind: speed , m/s km/h mph knots Bft	2 7 4 4 2	3 11 7 6 2	4 14 9 8 3	1 4 2 2 1	1 4 2 2 1	2 7 4 4 2	5 18 11 10 3	1 4 2 2 1	2 7 4 4 2	1 4 2 2 1	4 14 9 8 3	1 4 2 2 1	0	2 7 4 4 2	4 14 9 8 3	1 4 2 2 1	1 4 2 2 1	3 11 7 6 2	5 18 11 10 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	1 4 2 2 1	1 4 2 2 1	3 11 7 6 2
direction	W	W	NW	W	SW	W	W	SW	S	W	W	NW	calm	NW	W	W	SW	W	W	W	SW	W	W	W	SW	NW	NW
Humidity, %	97	81	74	94	87	81	69	90	87	92	70	89	92	89	81	97	99	100	61	90	97	75	59	87	94	69	53
Sun: rise set		06:38	19:39			06:39	19:37			06:40	19:36			06:41	19:35			06:42	19:33			06:43	19:32		06:43	19:30
Moon: rise set		21:19	10:20			21:51	11:30			22:31	12:42			23:19	13:54			-	15:03			00:17	16:06		01:24	16:58
phase

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Weather News

48 minutes ago, a strong breeze ( 11 m/s 40 km/h 25 miles/hour 21 knot 6 Bft) with gusts up to 14 m/s 50 km/h 31 miles/hour 27 knots 7 Bft was observed in Contra Costa in Byron (airport).

33 minutes ago, the minimum air temperature ( +11 ^oC +52 ^oF ) was observed in Humboldt in Fortuna (airport).

4 hours ago, the maximum air temperature ( +41 ^oC +106 ^oF ) was observed in Riverside in Blythe (airport).

less

Tomorrow, Monday, August 31																									Tuesday, September 1																								Wednesday, September 2								Thursday, September 3								Friday, September 4								Saturday, September 5							Sunday, September 6
Local time	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	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	02	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
Temperature, °C °F	+13 +55	+13 +55	+13 +55	+12 +54	+12 +54	+12 +54	+11 +52	+12 +54	+13 +55	+16 +61	+15 +59	+16 +61	+17 +63	+18 +64	+18 +64	+19 +66	+19 +66	+18 +64	+17 +63	+16 +61	+15 +59	+14 +57	+13 +55	+13 +55	+13 +55	+13 +55	+13 +55	+13 +55	+13 +55	+13 +55	+13 +55	+13 +55	+15 +59	+16 +61	+15 +59	+15 +59	+16 +61	+17 +63	+17 +63	+18 +64	+18 +64	+18 +64	+17 +63	+16 +61	+15 +59	+14 +57	+14 +57	+14 +57	+14 +57	+13 +55	+15 +59	+15 +59	+18 +64	+20 +68	+16 +61	+14 +57	+14 +57	+13 +55	+15 +59	+17 +63	+19 +66	+21 +70	+18 +64	+16 +61	+16 +61	+15 +59	+16 +61	+14 +57	+17 +63	+18 +64	+14 +57	+13 +55	+12 +54	+11 +52	+12 +54	+16 +61	+19 +66	+20 +68	+13 +55	+11 +52	+17 +63	+23 +73	Temperature, °C °F
Pressure, mmHg inches mbar hPa	748 29.45 997 997	747 29.41 996 996	747 29.41 996 996	747 29.41 996 996	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	748 29.45 997 997	748 29.45 997 997	748 29.45 997 997	748 29.45 997 997	748 29.45 997 997	747 29.41 996 996	747 29.41 996 996	747 29.41 996 996	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	748 29.45 997 997	748 29.45 997 997	748 29.45 997 997	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	749 29.49 999 999	749 29.49 999 999	749 29.49 999 999	749 29.49 999 999	749 29.49 999 999	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	750 29.53 1000 1000	750 29.53 1000 1000	751 29.57 1001 1001	751 29.57 1001 1001	750 29.53 1000 1000	750 29.53 1000 1000	750 29.53 1000 1000	750 29.53 1000 1000	750 29.53 1000 1000	749 29.49 999 999	750 29.53 1000 1000	749 29.49 999 999	748 29.45 997 997	747 29.41 996 996	746 29.37 995 995	746 29.37 995 995	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	746 29.37 995 995	746 29.37 995 995	747 29.41 996 996	746 29.37 995 995	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	744 29.29 992 992	Pressure, mmHg inches mbar hPa
Wind: speed , m/s km/h mph knots Bft	1 4 2 2 1	1 4 2 2 1	1 4 2 2 1	1 4 2 2 1	1 4 2 2 1	2 7 4 4 2	1 4 2 2 1	1 4 2 2 1	1 4 2 2 1	1 4 2 2 1	2 7 4 4 2	3 11 7 6 2	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	4 14 9 8 3	3 11 7 6 2	2 7 4 4 2	1 4 2 2 1	1 4 2 2 1	1 4 2 2 1	1 4 2 2 1	1 4 2 2 1	1 4 2 2 1	1 4 2 2 1	1 4 2 2 1	1 4 2 2 1	2 7 4 4 2	1 4 2 2 1	1 4 2 2 1	2 7 4 4 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	4 14 9 8 3	5 18 11 10 3	5 18 11 10 3	4 14 9 8 3	3 11 7 6 2	2 7 4 4 2	2 7 4 4 2	1 4 2 2 1	1 4 2 2 1	2 7 4 4 2	2 7 4 4 2	1 4 2 2 1	1 4 2 2 1	3 11 7 6 2	4 14 9 8 3	2 7 4 4 2	1 4 2 2 1	0	0	0	2 7 4 4 2	3 11 7 6 2	4 14 9 8 3	2 7 4 4 2	1 4 2 2 1	1 4 2 2 1	1 4 2 2 1	1 4 2 2 1	3 11 7 6 2	4 14 9 8 3	5 18 11 10 3	3 11 7 6 2	1 4 2 2 1	1 4 2 2 1	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	1 4 2 2 1	1 4 2 2 1	1 4 2 2 1	3 11 7 6 2	Wind: speed , m/s km/h mph knots Bft
direction	W	SW	SW	SW	SW	W	W	W	W	W	W	W	NW	NW	NW	NW	NW	NW	W	W	W	W	W	W	SW	SW	SW	SW	SW	SW	SW	SW	S	SW	W	W	W	W	W	W	W	W	W	W	W	SW	SW	SW	S	S	S	W	W	W	W	NW	calm	calm	calm	NW	W	W	W	W	W	SW	SW	W	W	W	W	W	SW	SW	SW	W	W	W	W	SW	NW	NW	direction
Humidity, %	95	95	95	96	96	97	98	97	96	86	83	81	78	75	75	73	74	74	81	86	91	91	92	94	96	97	96	94	90	87	87	87	86	81	82	81	80	78	75	71	69	69	76	82	89	89	90	90	88	87	85	92	78	70	86	89	91	92	91	89	86	81	97	97	99	99	98	100	81	61	87	90	94	97	93	75	66	59	87	94	69	53	Humidity, %
Sun: rise set											06:38		19:39																						06:39		19:37														06:40		19:36						06:41		19:35						06:42		19:33						06:43		19:32			06:43	19:30		Sun: rise set
Moon: rise set											21:19		10:20																						21:51		11:30														22:31		12:42						23:19		13:54						-		15:03						00:17		16:06			01:24	16:58		Moon: rise set
phase																																																																																			phase