5-day weather forecast Petersburg 18-08-2026

Weather forecast Petersburg Tuesday, August 18 18.08.2026: partly cloudy, temperature from 21 °C to 32 °C.

Precipitation probability 52%. Wind up to 2.81 m/s (gusts 5.14 m/s). Air humidity 44–98%, atmospheric pressure 759–761 mm Hg, UV index up to 8.

Sunrise 06:28
Sunset 19:58
First Quarter37% illuminated
Moonrise 13:00 · Moonset 23:02
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Table
Tue, Aug 18, 2026

Forecast from 21 °C to 32 °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)222222222221212123252728303132323232302826252423
Precipitation (mm/hr)0.3500000000000000000000000

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 (%)7210010036100100343257453321263135486275686053463932
Rain chance (%)524242254242242328158433346881015151415

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)0.691.111.391.3921.891.811.691.6922.312.612.312.111.811.611.311.111.692.192.812.812.812.81
Wind gust (m/s)1.252.252.532.443.783.673.473.142.422.612.8132.692.392.081.811.611.362.53.694.8955.115.14
Wind direction (°)ESE 103°ENE 60°N 11°N 352°NNW 347°N 357°N 352°N 359°N 355°WSW 251°SSE 148°NE 44°NE 50°NE 56°ENE 62°ENE 65°ENE 69°ENE 73°E 87°ESE 102°ESE 116°ESE 120°SE 124°SE 128°

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 (%)989797979797979695826956524844454647587081828486

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)761761761760760760761761761761761761761761760760759759759759759759760760

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 Index00000000.10.7667788787760000
Tue, Aug 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.