5-day weather forecast St. Petersburg Sep 23, 2026

30°28° · Light rain shower

Weather forecast St. Petersburg tomorrow Sep 23, 2026: light rain shower, temperature from 28 °C to 30 °C.

Precipitation probability 63%. Wind up to 3.11 m/s (gusts 7.89 m/s). Air humidity 62–73%, atmospheric pressure 760–762 mm Hg, UV index up to 8.4.

Sunrise 07:19
Sunset 19:26
Waxing Gibbous95% illuminated
Moonrise 17:54 · Moonset 04:36
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Table

Forecast from 28 °C to 30 °C and precipitation

Temperature & Precipitation
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Temperature (°C)292929292929282828282929293030303030303030292828
Precipitation (mm/hr)0.010.030.010.27000.220.340.380.65000.160.13000.0100.0400.111.381.431.31

Cloud cover and precipitation probability

Cloud cover & Rain chance
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Cloud cover (%)86761001001001001001001001001001001009210010010010010010010010010093
Rain chance (%)131417341717334041501716262315151515181524606360

Wind speed and direction

Wind & Wind gust
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Wind (m/s)0.691.191.811.891.51.812.192.111.810.6910.810.691.111.692.312.892.892.391.610.811.191.53.11
Wind gust (m/s)1.421.722.112.111.8122.312.2220.8653.813.694.114.697.315.897.896.391.611.421.421.723.53
Wind direction (°)SSE 162°SSE 164°S 177°S 191°SSW 198°S 176°S 175°S 179°S 188°S 191°SSE 158°SSE 156°SSW 212°SW 220°SW 218°SW 236°WSW 254°W 269°W 280°WNW 284°SW 233°SSE 160°SE 124°SE 136°

Air humidity

Humidity
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Humidity (%)636567696868727372706866646363636262626364687170

Atmospheric pressure

Pressure
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Pressure (mm Hg)761761761760760760761761761762762762762762761761761761761761761761761761

Ultraviolet index

UV Index
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
UV Index000000000.10.92.65.17.28.38.46.94.42.50.90.10000

Air quality & pollen

Air quality
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
PM2.5 (µg/m³)2.52.42.22.12.122.12.32.62.52.52.32.733.13.33.54.74.44.54.44.44.74.8
PM10 (µg/m³)2.62.52.32.42.32.32.42.62.92.82.62.42.833.23.33.64.94.54.74.64.54.84.9
Ozone (O₃) (µg/m³)48464544434240394046546476889810410710710510094867667
NO₂ (µg/m³)6.55.85.14.543.73.94.34.54.13.42.72.11.61.31.21.31.62.43.44.45.46.37
SO₂ (µg/m³)0.50.40.40.40.30.30.30.40.40.50.50.60.60.60.60.60.60.60.60.70.70.70.80.8
CO (µg/m³)192161136121113118150196224215187164156154152149147148157170176168153146

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.