5-day weather forecast San Francisco 28-06-2026

Weather forecast San Francisco Sunday, June 28 28.06.2026: sunny, temperature from 12 °C to 18 °C.

Precipitation probability 10%. Wind up to 6.31 m/s (gusts 9.58 m/s). Air humidity 58–84%, atmospheric pressure 759–761 mm Hg, UV index up to 9.

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 05:50
Sunset 20:35

Full Moon100% illuminated
Moonrise 20:24 · Moonset 04:35

Chart

Table

← Sat, Jun 27

Sun, Jun 28, 2026

Mon, Jun 29 →

Forecast from 12 °C to 18 °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)	13	13	13	13	12	12	13	13	14	15	16	17	17	17	17	18	18	18	17	16	15	15	14	14
Precipitation (mm/hr)	0	0	0	0	0	0	0	0	0	0	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 (%)	6	6	5	8	8	7	5	4	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	4
Rain chance (%)	10	10	11	11	11	11	11	10	7	5	4	3	3	3	3	4	3	3	4	5	7	9	10	11

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)	6.31	4.39	3	1.81	0.81	0.61	0.31	0.89	1	0.31	0.69	1.89	3.31	4.39	5.19	5.69	5.39	5.39	5.39	5.19	4.61	3.5	2.89	2.19
Wind gust (m/s)	9.58	6.69	4.58	2.72	1.22	0.92	0.47	1.28	1.28	0.36	0.81	2.22	3.86	5.25	6.42	7.25	7.22	7.36	7.42	7.25	6.58	5.33	4.39	3.33
Wind direction (°)	WNW 303°	NW 307°	NW 311°	NW 312°	NW 313°	WNW 283°	SE 140°	ESE 103°	ESE 116°	NE 50°	NW 308°	W 277°	W 273°	W 272°	W 271°	W 269°	W 270°	W 267°	W 270°	W 273°	W 274°	W 267°	W 259°	WSW 246°

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 (%)	80	82	83	84	84	84	84	81	75	68	63	60	58	58	60	61	60	59	61	66	73	80	82	84

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)	761	761	760	760	760	760	761	761	761	761	761	761	761	761	761	761	760	760	759	759	759	759	760	759

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	1.1	2.5	4.5	6.6	8.2	9	8.6	7.1	5.1	3	1.4	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)	5.4	5	4.8	4.9	5	5.3	5.5	5.5	5.6	5.7	5.7	6.2	6.6	6.8	6.8	6.8	6.5	6.5	6.7	7.3	7.4	7.7	7.9	8.1
PM10 (µg/m³)	8.5	7.7	7.2	7.1	7	7.1	7.3	7.3	7.7	8	8.1	8.9	9.6	10.3	10.3	10.5	10.2	10.1	10.3	11.2	11.2	11.6	11.7	11.9
Ozone (O₃) (µg/m³)	60	57	53	49	44	41	40	40	42	45	50	54	58	62	64	64	63	62	60	58	55	52	48	46
NO₂ (µg/m³)	4.6	5.2	6	7.3	8.9	9.8	9.7	8.9	8.1	7.4	6.5	5.7	4.8	3.9	3.2	2.8	2.7	3.1	4.3	6.1	7.9	9.7	11.6	12.6
SO₂ (µg/m³)	0.5	0.5	0.5	0.5	0.6	0.6	0.6	0.7	0.7	0.7	0.8	0.8	0.8	0.7	0.7	0.7	0.6	0.6	0.6	0.6	0.6	0.6	0.7	0.7
CO (µg/m³)	97	100	103	105	107	108	110	111	111	109	106	103	99	96	93	92	92	94	100	107	113	115	116	115

← Sat, Jun 27

Sun, Jun 28, 2026

Mon, Jun 29 →

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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 →