5-day weather forecast Petersburg Oct 18, 2026
18°Weather forecast Petersburg Sunday Oct 18, 2026: sunny, temperature from 4 °C to 18 °C.
Precipitation probability 10%. Wind up to 3 m/s (gusts 10.33 m/s). Air humidity 30–83%, atmospheric pressure 774–777 mm Hg, UV index up to 5.
5 days at a glance — tap a day to open it
Sunrise 07:20
Sunset 18:29
Sunset 18:29
First Quarter58% illuminated
Moonrise 14:50 · Moonset does not set today
Moonrise 14:50 · Moonset does not set today
Chart
TableSun, Oct 18, 2026
Forecast from 4 °C to 18 °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.
Sun, Oct 18, 2026
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.