5-day weather forecast San Francisco 17-05-2026

Weather forecast San Francisco tomorrow 17.05.2026: sunny, temperature from 10 °C to 18 °C.

No precipitation expected. Wind up to 7.69 m/s (gusts 13.22 m/s). Air humidity 42–72%, atmospheric pressure 756–760 mm Hg, UV index up to 8.7.

Sunrise 05:58
Sunset 20:14

Waxing Crescent0% illuminated
Moonrise 06:16 · Moonset 22:02

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Table

← Sat, May 16

Sun, May 17, 2026

Mon, May 18 →

Forecast from 10 °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)	11	11	11	10	10	10	10	11	13	13	14	14	15	15	16	16	17	17	18	17	17	17	17	17
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 (%)	0	0	0	0	0	0	0	0	0	0	14	4	0	0	0	3	4	0	0	0	0	0	0	0
Rain chance (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

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)	4.89	4.19	3	2.89	1.69	2.5	2.31	1.81	1.5	2.19	2.19	2.31	3.39	5.89	7.5	7.39	7.69	5.81	6.31	6.61	6.31	5.5	5.19	4.61
Wind gust (m/s)	7.5	6.42	4.61	4.47	2.67	3.97	3.64	2.72	2.08	2.86	2.86	2.94	4.42	7.97	10.36	10.78	12.11	10	11.47	12.94	13.22	11.56	10.92	9.67
Wind direction (°)	NW 306°	NW 313°	NW 311°	NW 315°	NW 324°	NW 307°	NW 305°	NW 311°	WNW 299°	WNW 298°	NW 308°	WNW 301°	WNW 295°	WNW 289°	WNW 291°	WNW 291°	WNW 294°	WNW 295°	WNW 302°	WNW 303°	NW 312°	NNW 327°	NNW 337°	NNW 333°

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 (%)	66	67	68	69	70	72	71	71	65	57	59	56	54	55	57	57	56	50	46	50	53	52	44	42

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	759	759	759	759	759	759	759	759	759	759	759	759	758	758	758	757	756	756	756	757	758	758

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	0.2	0.9	1.9	3.5	5.4	7.7	8.7	8.3	6.9	4.9	2.9	1.3	0.4	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)	5.9	5.9	6	6.3	6.6	7	7.1	7	6.9	7.1	6.8	8.1	8.1	7.8	7.3	6.8	6.2	5.6	4.9	4.3	3.9	3.7	3.6	3.7
PM10 (µg/m³)	8.3	8.3	8.6	9.2	9.7	10.2	10.5	10.3	10.2	10.3	9.8	11.8	11.6	11	10.3	9.3	8.2	7.1	6.1	5.2	4.5	4.3	4.3	4.4
Ozone (O₃) (µg/m³)	61	63	66	70	74	79	83	87	89	91	91	90	89	86	82	78	74	72	72	71	71	70	70	69
NO₂ (µg/m³)	6.3	5.7	5.1	4.4	3.9	3.6	3.4	3.4	3.4	3.6	4.1	5.3	6.9	8.1	8.5	8.6	8.5	8.3	7.9	7.6	7.3	7	6.9	7
SO₂ (µg/m³)	1.4	1.4	1.4	1.5	1.5	1.5	1.5	1.5	1.5	1.5	1.6	1.7	1.9	2	2.1	2.1	2.1	2.1	2	1.9	1.8	1.8	1.7	1.7
CO (µg/m³)	130.9	131.9	130.9	129.9	128.9	127.9	127.9	127.9	127.9	127.9	128.9	133.9	139.9	143.9	144.9	144.9	143.9	141.9	139.9	137.9	135.9	133.9	132.9	134.9

← Sat, May 16

Sun, May 17, 2026

Mon, May 18 →

San Francisco on the map

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 →