5-day weather forecast San Francisco 20-05-2026
Weather forecast San Francisco Wednesday, May 20 20.05.2026: sunny, temperature from 13 °C to 20 °C.
No precipitation expected. Wind up to 4.31 m/s (gusts 7.67 m/s). Air humidity 49–83%, atmospheric pressure 758–761 mm Hg, UV index up to 8.4.
Sunrise 05:56
Sunset 20:17
Sunset 20:17
Waxing Crescent15% illuminated
Moonrise 09:40 · Moonset 00:06
Moonrise 09:40 · Moonset 00:06
Chart
Table
| Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Clear | 13 °C | 0% | 0% | 80% | 761 mm Hg | SW 232° 2.5 (4.56) m/s | 0 |
| 01:00 | Clear | 13 °C | 0% | 0% | 81% | 761 mm Hg | SW 235° 2.31 (4.11) m/s | 0 |
| 02:00 | Clear | 13 °C | 0% | 0% | 82% | 761 mm Hg | SW 228° 2.11 (3.75) m/s | 0 |
| 03:00 | Clear | 13 °C | 0% | 0% | 83% | 761 mm Hg | SW 216° 1.69 (3.08) m/s | 0 |
| 04:00 | Clear | 13 °C | 0% | 0% | 83% | 761 mm Hg | SSW 202° 1.81 (3.42) m/s | 0 |
| 05:00 | Clear | 13 °C | 0% | 0% | 82% | 761 mm Hg | SSW 209° 1.69 (3.33) m/s | 0 |
| 06:00 |  Sunny | 13 °C | 0% | 0% | 81% | 761 mm Hg | SSW 196° 1.69 (3.36) m/s | 0 |
| 07:00 | Sunny | 14 °C | 0% | 0% | 76% | 761 mm Hg | SSW 198° 1 (1.75) m/s | 0.2 |
| 08:00 | Sunny | 15 °C | 0% | 0% | 69% | 761 mm Hg | S 180° 0.39 (0.61) m/s | 0.9 |
| 09:00 | Sunny | 17 °C | 0% | 0% | 62% | 761 mm Hg | S 189° 0.31 (0.44) m/s | 2.2 |
| 10:00 | Sunny | 18 °C | 0% | 0% | 56% | 761 mm Hg | WSW 238° 0.61 (0.92) m/s | 4.1 |
| 11:00 | Sunny | 19 °C | 0% | 0% | 52% | 761 mm Hg | WSW 257° 1.19 (1.92) m/s | 6 |
| 12:00 | Sunny | 20 °C | 0% | 0% | 51% | 761 mm Hg | W 263° 2 (3.53) m/s | 7.5 |
| 13:00 | Sunny | 20 °C | 0% | 0% | 50% | 761 mm Hg | W 260° 2.69 (4.97) m/s | 8.4 |
| 14:00 | Sunny | 20 °C | 0% | 0% | 49% | 761 mm Hg | WSW 258° 4 (7.28) m/s | 8.2 |
| 15:00 | Sunny | 20 °C | 0% | 0% | 51% | 760 mm Hg | W 262° 4.19 (7.53) m/s | 6.8 |
| 16:00 | Sunny | 19 °C | 0% | 0% | 54% | 760 mm Hg | W 261° 4.31 (7.67) m/s | 4.8 |
| 17:00 | Sunny | 18 °C | 0% | 0% | 55% | 760 mm Hg | W 260° 4.19 (7.58) m/s | 2.9 |
| 18:00 | Sunny | 16 °C | 0% | 0% | 67% | 758 mm Hg | WSW 250° 4.11 (6.19) m/s | 1.3 |
| 19:00 | Sunny | 16 °C | 0% | 0% | 72% | 758 mm Hg | WSW 250° 3.69 (5.75) m/s | 0.4 |
| 20:00 | Sunny | 14 °C | 0% | 0% | 67% | 760 mm Hg | W 261° 3 (5.78) m/s | 0 |
| 21:00 |  Partly cloudy | 14 °C | 0% | 32% | 80% | 759 mm Hg | WSW 243° 2.89 (4.75) m/s | 0 |
| 22:00 | Partly cloudy | 14 °C | 0% | 60% | 82% | 759 mm Hg | WSW 244° 2.5 (4.08) m/s | 0 |
| 23:00 | Clear | 13 °C | 0% | 0% | 72% | 760 mm Hg | WSW 248° 2 (4.08) m/s | 0 |
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.