5-day weather forecast San Francisco 21-03-2026
Weather forecast San Francisco Saturday 21 March 21.03.2026: sunny, temperature from 14 °C to 20 °C.
No precipitation expected. Wind up to 4.19 m/s (gusts 8.47 m/s). Air humidity 61–82%, atmospheric pressure 758–761 mm Hg, UV index up to 5.
Sunrise 07:15
Sunset 19:20
Sunset 19:20
Chart
Table
Type of temperature:
°C
°FSat, 21 Mar, 2026
| Temperature | Precipitation | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Clear | 16 °C | 0% | 4% | 75% | 760 mm Hg | WSW 247° 1.31 (2.72) m/s | 0 |
| 01:00 |  Overcast | 16 °C | 0% | 100% | 78% | 760 mm Hg | W 260° 1.69 (3.58) m/s | 0 |
| 02:00 | Clear | 15 °C | 0% | 6% | 72% | 760 mm Hg | WSW 255° 1.31 (2.72) m/s | 0 |
| 03:00 | Clear | 15 °C | 0% | 5% | 81% | 760 mm Hg | W 261° 1.69 (3.58) m/s | 0 |
| 04:00 |  Partly cloudy | 15 °C | 0% | 33% | 82% | 760 mm Hg | W 265° 1.61 (3.36) m/s | 0 |
| 05:00 | Partly cloudy | 15 °C | 0% | 44% | 75% | 759 mm Hg | W 277° 1.19 (2.53) m/s | 0 |
| 06:00 |  Cloudy | 15 °C | 0% | 65% | 82% | 760 mm Hg | WSW 249° 0.69 (1.44) m/s | 0 |
| 07:00 | Partly cloudy | 15 °C | 0% | 32% | 82% | 760 mm Hg | W 267° 0.89 (1.83) m/s | 0 |
| 08:00 |  Partly cloudy | 16 °C | 0% | 32% | 72% | 760 mm Hg | N 0° 1.31 (2.72) m/s | 5 |
| 09:00 |  Overcast | 16 °C | 0% | 96% | 75% | 761 mm Hg | W 272° 0.89 (1.61) m/s | 4 |
| 10:00 | Partly cloudy | 18 °C | 0% | 36% | 71% | 761 mm Hg | WNW 290° 2 (3.33) m/s | 5 |
| 11:00 |  Sunny | 19 °C | 0% | 17% | 62% | 760 mm Hg | NW 324° 1.69 (3) m/s | 5 |
| 12:00 |  Cloudy | 19 °C | 0% | 40% | 62% | 760 mm Hg | NW 311° 2.39 (4.39) m/s | 4 |
| 13:00 | Sunny | 20 °C | 0% | 62% | 61% | 759 mm Hg | WNW 298° 3.11 (5.81) m/s | 5 |
| 14:00 | Cloudy | 20 °C | 0% | 84% | 61% | 759 mm Hg | WNW 285° 3.81 (7.14) m/s | 5 |
| 15:00 | Overcast | 20 °C | 0% | 89% | 62% | 758 mm Hg | W 278° 3.89 (7.61) m/s | 4 |
| 16:00 | Cloudy | 19 °C | 0% | 94% | 63% | 758 mm Hg | W 271° 4.11 (8) m/s | 4 |
| 17:00 | Overcast | 19 °C | 0% | 100% | 64% | 758 mm Hg | W 264° 4.19 (8.47) m/s | 4 |
| 18:00 | Sunny | 18 °C | 0% | 69% | 68% | 758 mm Hg | W 265° 3.69 (7.61) m/s | 5 |
| 19:00 | Overcast | 16 °C | 0% | 39% | 71% | 758 mm Hg | W 266° 3.31 (6.69) m/s | 4 |
| 20:00 | Clear | 16 °C | 0% | 8% | 75% | 758 mm Hg | W 266° 2.81 (5.89) m/s | 0 |
| 21:00 | Partly cloudy | 15 °C | 0% | 19% | 76% | 758 mm Hg | W 260° 2.39 (4.89) m/s | 0 |
| 22:00 | Clear | 15 °C | 0% | 29% | 77% | 758 mm Hg | WSW 253° 2 (4) m/s | 0 |
| 23:00 | Partly cloudy | 14 °C | 0% | 39% | 78% | 758 mm Hg | WSW 246° 1.61 (3.06) m/s | 0 |
Sat, 21 Mar, 2026
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.