5-day weather forecast Saint Petersburg 20-05-2026
Weather forecast Saint Petersburg Wednesday, May 20 20.05.2026: partly cloudy, temperature from 10 °C to 16 °C.
Precipitation probability 100%. Wind up to 5.19 m/s (gusts 6.56 m/s). Air humidity 69–98%, atmospheric pressure 761–766 mm Hg, UV index up to 3.9.
Sunrise 04:11
Sunset 21:42
Sunset 21:42
Waxing Crescent15% illuminated
Moonrise 06:27 · Moonset 02:06
Moonrise 06:27 · Moonset 02:06
Chart
Table
| Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Patchy light rain with thunder | 15 °C | 100% (0.31 mm/hr) | 72% | 93% | 761 mm Hg | NE 48° 0.5 (1.06) m/s | 0 |
| 01:00 |  Patchy rain possible | 15 °C | 100% (0.59 mm/hr) | 80% | 92% | 761 mm Hg | NE 56° 0.39 (0.83) m/s | 0 |
| 02:00 |  Mist | 14 °C | 0% | 11% | 94% | 761 mm Hg | SSE 161° 1.39 (2.94) m/s | 0 |
| 03:00 |  Clear | 14 °C | 0% | 14% | 93% | 761 mm Hg | ESE 113° 0.89 (1.89) m/s | 0 |
| 04:00 | Mist | 14 °C | 0% | 17% | 95% | 761 mm Hg | WSW 239° 2.11 (4.42) m/s | 0 |
| 05:00 |  Fog | 14 °C | 0% | 100% | 98% | 762 mm Hg | WSW 256° 2.61 (4.89) m/s | 0 |
| 06:00 | Fog | 14 °C | 0% | 100% | 97% | 762 mm Hg | W 276° 3.19 (4.81) m/s | 0.2 |
| 07:00 |  Mist | 13 °C | 0% | 100% | 96% | 763 mm Hg | WNW 288° 3.19 (4.5) m/s | 0.3 |
| 08:00 |  Thundery outbreaks possible | 13 °C | 0% | 100% | 92% | 764 mm Hg | W 272° 3.11 (4.08) m/s | 0.7 |
| 09:00 | Thundery outbreaks possible | 14 °C | 0% | 100% | 89% | 764 mm Hg | W 266° 3.31 (4.19) m/s | 1.2 |
| 10:00 |  Overcast | 14 °C | 0% | 100% | 84% | 764 mm Hg | W 269° 3.19 (3.86) m/s | 1.8 |
| 11:00 | Overcast | 15 °C | 0% | 100% | 78% | 764 mm Hg | W 272° 2.89 (3.47) m/s | 2.4 |
| 12:00 |  Cloudy | 16 °C | 0% | 77% | 73% | 764 mm Hg | WNW 288° 3.11 (3.58) m/s | 3.3 |
| 13:00 | Cloudy | 16 °C | 0% | 64% | 69% | 764 mm Hg | WNW 297° 3.81 (4.36) m/s | 3.9 |
| 14:00 |  Partly cloudy | 15 °C | 0% | 58% | 71% | 765 mm Hg | NW 306° 4.5 (5.17) m/s | 3.5 |
| 15:00 | Cloudy | 14 °C | 0% | 69% | 74% | 765 mm Hg | NW 309° 4.69 (5.42) m/s | 2.6 |
| 16:00 | Cloudy | 13 °C | 0% | 66% | 74% | 765 mm Hg | WNW 303° 4.81 (5.72) m/s | 1.9 |
| 17:00 | Overcast | 13 °C | 0% | 100% | 73% | 765 mm Hg | WNW 294° 5.19 (6.56) m/s | 1.2 |
| 18:00 | Partly cloudy | 13 °C | 0% | 44% | 72% | 765 mm Hg | WNW 294° 4.69 (5.83) m/s | 0.9 |
| 19:00 | Partly cloudy | 13 °C | 0% | 27% | 75% | 765 mm Hg | WNW 292° 4.61 (6.11) m/s | 0.5 |
| 20:00 |  Sunny | 12 °C | 0% | 24% | 79% | 766 mm Hg | WNW 294° 2.81 (4.06) m/s | 0.2 |
| 21:00 | Sunny | 11 °C | 0% | 22% | 84% | 766 mm Hg | WNW 289° 2.31 (3.89) m/s | 0 |
| 22:00 |  Partly cloudy | 10 °C | 0% | 49% | 87% | 766 mm Hg | WNW 292° 2.69 (4.78) m/s | 0 |
| 23:00 | Partly cloudy | 10 °C | 0% | 58% | 87% | 766 mm Hg | W 278° 1.61 (2.78) m/s | 0 |
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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.