5-day weather forecast Petersburg Sep 15, 2026
23°Weather forecast Petersburg today Sep 15, 2026: overcast, temperature from 14 °C to 28 °C.
Precipitation probability 25%. Wind up to 2.69 m/s (gusts 10.31 m/s). Air humidity 36–82%, atmospheric pressure 768–771 mm Hg, UV index up to 7.2.
5 days at a glance — tap a day to open it
Sunrise 06:51
Sunset 19:17
Sunset 19:17
Waxing Crescent23% illuminated
Moonrise 11:50 · Moonset 21:35
Moonrise 11:50 · Moonset 21:35
Chart
TableTue, Sep 15, 2026
Forecast from 14 °C to 28 °C and precipitation
Cloud cover and precipitation probability
Wind speed and direction
Air humidity
Atmospheric pressure
Ultraviolet index
Air quality & pollen
Tue, Sep 15, 2026
Frequently asked questions about the 5-day weather in Petersburg
What will the weather be like in Petersburg over the next 5 days?
Over the next 5 days in Petersburg the temperature is expected to range from about 14 to 34 °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 Petersburg?
The chance of rain in Petersburg over the next 5 days reaches 61%. 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 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 Petersburg will be the warmest and which the coolest?
Over the next 5 days the temperature in Petersburg ranges from about 14 to 34 °C. Compare the warmest and coolest day on the temperature chart above.
Will it be windy in Petersburg over the next 5 days?
Over the next 5 days the wind in Petersburg picks up to 4 m/s. The windiest days are easy to spot on the wind chart above.
Which day of the week in 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 61%) and light wind — easy to compare on the 5-day charts above.
How can I best use the 5-day forecast for 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 Petersburg this week?
Rain reaches a 61% 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 7.2; sunscreen is worth it from about 3 upwards.
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.