5-day weather forecast St. Petersburg Sep 19, 2026
28°Weather forecast St. Petersburg today Sep 19, 2026: sunny, temperature from 26 °C to 30 °C.
Precipitation probability 47%. Wind up to 7 m/s (gusts 8.03 m/s). Air humidity 56–80%, atmospheric pressure 759–762 mm Hg, UV index up to 8.9.
5 days at a glance — tap a day to open it
Sunrise 07:17
Sunset 19:31
Sunset 19:31
First Quarter63% illuminated
Moonrise 15:31 · Moonset 00:54
Moonrise 15:31 · Moonset 00:54
Chart
TableSat, Sep 19, 2026
Forecast from 26 °C to 30 °C and precipitation
Cloud cover and precipitation probability
Wind speed and direction
Air humidity
Atmospheric pressure
Ultraviolet index
Air quality & pollen
Sat, Sep 19, 2026
Frequently asked questions about the 5-day weather in St. Petersburg
What will the weather be like in St. Petersburg over the next 5 days?
Over the next 5 days in St. Petersburg the temperature is expected to range from about 26 to 31 °C. See the detailed hourly forecast for each of the 5 days in the charts above.
On which of the next 5 days will it rain in St. Petersburg?
The chance of rain in St. Petersburg over the next 5 days reaches 69%. Check the 5-day precipitation chart above to see exactly which days and hours bring rain.
How accurate is the 5-day weather forecast for St. Petersburg?
A 5-day forecast is fairly reliable: the first 2–3 days are usually very accurate, while days 4–5 may be refined. The data is updated several times a day, so check back before important plans.
Which of the next 5 days in St. Petersburg will be the warmest and which the coolest?
Over the next 5 days the temperature in St. Petersburg ranges from about 26 to 31 °C. Compare the warmest and coolest day on the temperature chart above.
Will it be windy in St. Petersburg over the next 5 days?
Over the next 5 days the wind in St. Petersburg picks up to 7 m/s. The windiest days are easy to spot on the wind chart above.
Which day of the week in St. Petersburg is best for a walk or a trip?
For a walk or a trip, pick the days with the lowest chance of rain (up to 69%) and light wind — easy to compare on the 5-day charts above.
How can I best use the 5-day forecast for St. Petersburg?
The first 2–3 days are reliable enough for firm decisions, while days 4–5 are a guide that sharpens as they approach. The forecast is updated several times a day, so check again before important plans.
Will I need an umbrella or sunscreen in St. Petersburg this week?
Rain reaches a 69% chance across the next 5 days, so pack something waterproof for the wettest of them — the daily strip above shows which. Today’s UV index peaks at 8.9; sunscreen is worth it from about 3 upwards.
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.