5-day weather forecast San Francisco 27-08-2026
Weather forecast San Francisco tomorrow 27.08.2026: sunny, temperature from 16 °C to 19 °C.
Precipitation probability 22%. Wind up to 5.89 m/s (gusts 8.97 m/s). Air humidity 68–87%, atmospheric pressure 759–761 mm Hg, UV index up to 8.7.
Weather Alerts
Hide alertsSmall Craft Advisory issued August 26 at 2:50AM PDT until August 28 at 9:00AM PDT by NWS San Francisco CA
Small Craft Advisory
* WHAT...Northwest winds 15 to 25 kt with gusts up to 35 kt.
* WHERE...Waters from Point Reyes to Pigeon Point 10-60 NM.
* WHEN...Until 9 AM PDT Friday.
* IMPACTS...Conditions will be hazardous to small craft.
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
Small Craft Advisory issued August 26 at 8:28AM PDT until August 28 at 9:00AM PDT by NWS San Francisco CA
Small Craft Advisory
* WHAT...Northwest winds 15 to 25 kt with occasional gusts up to
35 kt.
* WHERE...Waters from Point Reyes to Pigeon Point 10-60 NM.
* WHEN...Until 9 AM PDT Friday.
* IMPACTS...Conditions will be hazardous to small craft.
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
5 days at a glance — tap a day to open it
Sunrise 06:35
Sunset 19:46
Sunset 19:46
Full Moon100% illuminated
Moonrise 19:43 · Moonset 06:16
Moonrise 19:43 · Moonset 06:16
Chart
Table
| Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Clear | 17 °C | 11% | 5% | 84% | 761 mm Hg | WNW 289° 3.11 (5.53) m/s | 0 |
| 01:00 | Clear | 17 °C | 11% | 5% | 85% | 761 mm Hg | WNW 286° 2.39 (4.53) m/s | 0 |
| 02:00 | Clear | 17 °C | 12% | 5% | 86% | 761 mm Hg | WNW 285° 2 (3.89) m/s | 0 |
| 03:00 | Clear | 17 °C | 12% | 5% | 87% | 760 mm Hg | W 274° 1.61 (3.22) m/s | 0 |
| 04:00 | Clear | 17 °C | 12% | 5% | 87% | 760 mm Hg | W 270° 1.5 (2.83) m/s | 0 |
| 05:00 | Clear | 17 °C | 12% | 5% | 87% | 760 mm Hg | W 265° 1.39 (2.42) m/s | 0 |
| 06:00 | Clear | 17 °C | 12% | 1% | 87% | 760 mm Hg | W 272° 1.5 (2.11) m/s | 0 |
| 07:00 |  Sunny | 16 °C | 12% | 5% | 86% | 761 mm Hg | W 263° 1.39 (2) m/s | 0 |
| 08:00 | Sunny | 17 °C | 11% | 5% | 83% | 761 mm Hg | WSW 251° 1.39 (2) m/s | 0.6 |
| 09:00 | Sunny | 17 °C | 9% | 6% | 79% | 761 mm Hg | WSW 255° 1.81 (2.11) m/s | 1.8 |
| 10:00 | Sunny | 18 °C | 9% | 19% | 76% | 761 mm Hg | W 263° 2.61 (2.92) m/s | 3.8 |
| 11:00 | Sunny | 18 °C | 9% | 18% | 75% | 761 mm Hg | WSW 257° 3.39 (3.72) m/s | 6.1 |
| 12:00 |  Patchy rain possible | 19 °C | 20% (0.01 mm/hr) | 95% | 74% | 761 mm Hg | WSW 255° 3.61 (4.11) m/s | 7.9 |
| 13:00 |  Cloudy | 18 °C | 15% | 72% | 74% | 761 mm Hg | WSW 257° 5 (6.22) m/s | 8.7 |
| 14:00 |  Overcast | 19 °C | 19% | 99% | 72% | 760 mm Hg | W 263° 4.89 (6.81) m/s | 8.3 |
| 15:00 | Overcast | 19 °C | 18% | 100% | 69% | 760 mm Hg | W 262° 5.5 (7.92) m/s | 6.7 |
| 16:00 | Overcast | 19 °C | 17% | 100% | 68% | 760 mm Hg | W 267° 5.89 (8.72) m/s | 4.5 |
| 17:00 | Overcast | 19 °C | 18% | 100% | 69% | 760 mm Hg | W 274° 5.61 (8.69) m/s | 2.3 |
| 18:00 | Overcast | 18 °C | 17% | 100% | 68% | 760 mm Hg | W 275° 5.81 (8.97) m/s | 0.9 |
| 19:00 | Overcast | 18 °C | 18% | 100% | 68% | 759 mm Hg | WNW 288° 4.89 (8.42) m/s | 0.2 |
| 20:00 |  Overcast | 18 °C | 18% | 100% | 69% | 759 mm Hg | W 267° 3.61 (6.69) m/s | 0 |
| 21:00 | Overcast | 17 °C | 19% | 100% | 72% | 760 mm Hg | WSW 256° 4.39 (7.03) m/s | 0 |
| 22:00 | Overcast | 17 °C | 22% | 100% | 76% | 760 mm Hg | W 264° 5.19 (7.53) m/s | 0 |
| 23:00 | Overcast | 16 °C | 22% | 100% | 78% | 761 mm Hg | WSW 247° 4.39 (6.61) 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.