5-day weather forecast St. Petersburg Oct 20, 2026
26°Weather forecast St. Petersburg Tuesday Oct 20, 2026: sunny, temperature from 19 °C to 26 °C.
Precipitation probability 7%. Wind up to 8.11 m/s (gusts 9.11 m/s). Air humidity 40–75%, atmospheric pressure 763–766 mm Hg, UV index up to 7.
5 days at a glance — tap a day to open it
Sunrise 07:33
Sunset 18:57
Sunset 18:57
Waxing Gibbous77% illuminated
Moonrise 15:54 · Moonset 02:28
Moonrise 15:54 · Moonset 02:28
Chart
TableTue, Oct 20, 2026
Forecast from 19 °C to 26 °C and precipitation
Cloud cover and precipitation probability
Wind speed and direction
Air humidity
Atmospheric pressure
Ultraviolet index
Air quality & pollen
Air quality is available for the first three days only.
Tue, Oct 20, 2026
St. Petersburg 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.