5-day weather forecast San Francisco 21-07-2026
Weather forecast San Francisco Tuesday, July 21 21.07.2026: sunny, temperature from 14 °C to 21 °C.
Precipitation probability 44%. Wind up to 3.81 m/s (gusts 6.33 m/s). Air humidity 59–88%, atmospheric pressure 759–761 mm Hg, UV index up to 6.
Sunrise 06:04
Sunset 20:27
Sunset 20:27
First Quarter53% illuminated
Moonrise 14:15 · Moonset 00:01
Moonrise 14:15 · Moonset 00:01
Chart
Table
Tue, Jul 21, 2026
| Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Partly cloudy | 15 °C | 14% | 45% | 80% | 759 mm Hg | W 267° 1.61 (2.97) m/s | 0 |
| 01:00 |  Clear | 16 °C | 11% | 25% | 79% | 759 mm Hg | WSW 253° 1.5 (2.83) m/s | 0 |
| 02:00 | Clear | 14 °C | 15% | 23% | 88% | 760 mm Hg | WSW 247° 2.5 (3.97) m/s | 0 |
| 03:00 | Clear | 15 °C | 10% | 20% | 79% | 759 mm Hg | WSW 256° 1.69 (3.25) m/s | 0 |
| 04:00 | Clear | 16 °C | 10% | 19% | 79% | 759 mm Hg | W 279° 1.11 (2.17) m/s | 0 |
| 05:00 | Partly cloudy | 14 °C | 18% | 55% | 86% | 760 mm Hg | WSW 255° 2.5 (3.97) m/s | 0 |
| 06:00 |  Patchy rain possible | 16 °C | 39% (0.29 mm/hr) | 78% | 82% | 760 mm Hg | SW 231° 1.31 (2.53) m/s | 0 |
| 07:00 |  Patchy rain possible | 17 °C | 31% (0.1 mm/hr) | 89% | 81% | 760 mm Hg | SW 233° 0.81 (1.5) m/s | 4 |
| 08:00 |  Partly cloudy | 15 °C | 13% | 44% | 79% | 761 mm Hg | WSW 237° 2 (2.83) m/s | 5 |
| 09:00 | Patchy rain possible | 19 °C | 44% (0.46 mm/hr) | 86% | 73% | 761 mm Hg | SE 127° 0.31 (0.53) m/s | 4 |
| 10:00 | Patchy rain possible | 21 °C | 17% (0.07 mm/hr) | 70% | 68% | 760 mm Hg | ENE 67° 0.19 (0.33) m/s | 5 |
| 11:00 |  Sunny | 19 °C | 5% | 21% | 64% | 761 mm Hg | WSW 253° 2.81 (3.61) m/s | 5 |
| 12:00 | Sunny | 19 °C | 5% | 16% | 62% | 761 mm Hg | WSW 251° 3.11 (4.31) m/s | 5 |
| 13:00 | Sunny | 20 °C | 4% | 11% | 61% | 761 mm Hg | WSW 249° 3.5 (5) m/s | 5 |
| 14:00 | Sunny | 20 °C | 4% | 7% | 59% | 761 mm Hg | WSW 248° 3.81 (5.67) m/s | 6 |
| 15:00 | Sunny | 20 °C | 4% | 11% | 61% | 760 mm Hg | WSW 250° 3.81 (5.81) m/s | 5 |
| 16:00 | Sunny | 19 °C | 5% | 15% | 63% | 760 mm Hg | WSW 252° 3.81 (5.89) m/s | 5 |
| 17:00 | Sunny | 18 °C | 5% | 19% | 65% | 759 mm Hg | WSW 254° 3.81 (6.08) m/s | 5 |
| 18:00 | Sunny | 18 °C | 6% | 20% | 67% | 760 mm Hg | WSW 252° 3.81 (6.19) m/s | 5 |
| 19:00 | Sunny | 17 °C | 7% | 22% | 69% | 760 mm Hg | WSW 250° 3.69 (6.19) m/s | 5 |
| 20:00 | Sunny | 17 °C | 8% | 24% | 72% | 760 mm Hg | WSW 248° 3.69 (6.33) m/s | 5 |
| 21:00 | Partly cloudy | 17 °C | 9% | 31% | 74% | 760 mm Hg | WSW 243° 3.5 (6) m/s | 0 |
| 22:00 | Clear | 16 °C | 11% | 38% | 75% | 760 mm Hg | WSW 237° 3.39 (5.69) m/s | 0 |
| 23:00 | Partly cloudy | 16 °C | 12% | 45% | 77% | 760 mm Hg | SW 232° 3.19 (5.42) m/s | 0 |
Tue, Jul 21, 2026
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.