5-day weather forecast San Francisco 27-06-2026

Weather forecast San Francisco tomorrow 27.06.2026: sunny, temperature from 13 °C to 17 °C.

Precipitation probability 34%. Wind up to 10.61 m/s (gusts 12.94 m/s). Air humidity 57–93%, atmospheric pressure 759–761 mm Hg, UV index up to 9.6.

Weather Alerts

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MinorJun 25, 08:21 PM — Jun 26, 04:30 AMTranslate with Google

Small Craft Advisory issued June 25 at 1:21PM PDT until June 27 at 3:00AM PDT by NWS San Francisco CA

Small Craft Advisory

* WHAT...West winds 10 to 20 kt with gusts to 25 kt and choppy waters expected. * WHERE...San Francisco Bay South of the Bay Bridge. * WHEN...From 3 PM this afternoon to 3 AM PDT Saturday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.

MinorJun 26, 03:38 AM — Jun 26, 11:45 AMTranslate with Google

Small Craft Advisory issued June 25 at 8:38PM PDT until June 27 at 3:00AM PDT by NWS San Francisco CA

Small Craft Advisory

* WHAT...West winds 15 to 25 kt and choppy waters. * WHERE...San Francisco Bay South of the Bay Bridge. * WHEN...Until 3 AM PDT Saturday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.

Sunrise 05:49
Sunset 20:35

Full Moon97% illuminated
Moonrise 19:31 · Moonset 03:47

Chart

Table

← Fri, Jun 26

Sat, Jun 27, 2026

Sun, Jun 28 →

Forecast from 13 °C to 17 °C and precipitation

Temperature & Precipitation
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Temperature (°C)	15	15	15	15	15	15	15	15	15	16	16	16	16	17	17	16	16	16	15	15	14	14	14	13
Precipitation (mm/hr)	0.04	0.04	0.02	0.08	0.05	0.01	0.01	0.02	0.01	0.01	0	0	0	0	0	0	0	0	0	0	0	0	0	0

Cloud cover and precipitation probability

Cloud cover & Rain chance
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Cloud cover (%)	91	85	69	73	79	86	70	62	72	77	20	0	0	0	0	0	0	0	0	0	0	0	0	1
Rain chance (%)	34	33	26	31	26	20	17	15	16	16	6	4	4	3	3	3	4	4	5	5	7	8	8	9

Wind speed and direction

Wind & Wind gust
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Wind (m/s)	4.69	4.61	4.31	3.89	4.31	5	5.11	5.31	5.61	5.81	6.61	7.19	7.61	8	8.81	9.19	9.5	10.11	10.61	10.19	9.69	9.11	8.5	7.39
Wind gust (m/s)	6.67	6.58	6.06	5.53	6.53	7.28	7.42	7.44	7.5	7.42	8.03	8.28	8.75	9.19	10.11	10.58	10.92	11.61	12.67	12.86	12.94	12.83	12.36	11.08
Wind direction (°)	WSW 250°	WSW 249°	WSW 250°	WSW 258°	W 270°	W 272°	W 271°	W 271°	W 269°	W 270°	W 276°	W 275°	W 274°	W 272°	W 271°	W 272°	W 272°	W 277°	W 281°	WNW 284°	WNW 287°	WNW 287°	WNW 291°	WNW 301°

Air humidity

Humidity
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Humidity (%)	93	93	93	90	85	77	77	76	74	71	67	64	60	58	58	57	60	62	65	68	72	77	78	79

Atmospheric pressure

Pressure
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Pressure (mm Hg)	760	760	760	760	760	759	759	760	761	761	761	761	761	761	761	761	760	760	759	759	759	760	760	761

Ultraviolet index

UV Index
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
UV Index	0	0	0	0	0	0	0	0.3	0.8	2.1	4.1	7	8.8	9.6	9.1	7.6	5.4	3.2	1.5	0.5	0	0	0	0

Air quality & pollen

Air quality
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
PM2.5 (µg/m³)	10	9.8	9.5	9.3	9.2	8.6	8.5	8.4	8.4	9.1	9.7	9.8	10	10	9.9	9.7	9.3	8.4	8	7.9	8.1	7.5	6.8	6.2
PM10 (µg/m³)	14.9	14.8	14.5	14.2	14.1	13.3	13.2	13.2	13.4	14.5	15.4	15.7	15.9	15.9	15.8	15.5	15	13.6	13.1	13	13.2	12.2	11.1	9.9
Ozone (O₃) (µg/m³)	41	42	43	43	42	42	43	45	48	52	56	60	63	65	66	64	61	59	61	64	66	66	65	63
NO₂ (µg/m³)	7.1	6.1	5.2	4.7	4.3	4	3.8	3.6	3.4	3.2	3	2.8	2.4	2	1.8	2	2.4	2.8	3	3.1	3.3	3.5	3.7	4.1
SO₂ (µg/m³)	1.1	1	0.9	0.9	0.9	0.9	0.8	0.7	0.6	0.6	0.7	0.7	0.7	0.8	0.8	0.8	0.7	0.7	0.6	0.6	0.5	0.5	0.5	0.5
CO (µg/m³)	90	91	92	91	89	88	89	91	93	93	93	92	91	91	90	89	89	89	90	91	92	92	93	94

← Fri, Jun 26

Sat, Jun 27, 2026

Sun, Jun 28 →

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Data Sources & Methodology

Our weather forecasts are powered by a professional weather data provider that aggregates data from national weather services, satellite observations, radar networks, and over 80,000 weather stations worldwide. Forecast data is updated multiple times daily. We convert raw data into clear summaries — wind speed in m/s, pressure in mmHg — so you can plan your day with confidence.

Learn more about our methodology →