5-day weather forecast St. Petersburg Oct 18, 2026
25°Weather forecast St. Petersburg Sunday Oct 18, 2026: sunny, temperature from 18 °C to 25 °C.
Precipitation probability 7%. Wind up to 11.39 m/s (gusts 15.89 m/s). Air humidity 50–73%, atmospheric pressure 764–767 mm Hg, UV index up to 6.6.
5 days at a glance — tap a day to open it
Sunrise 07:32
Sunset 18:58
Sunset 18:58
First Quarter58% illuminated
Moonrise 14:49 · Moonset 00:37
Moonrise 14:49 · Moonset 00:37
Chart
Table
| Time | Weather | Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index |
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Clear | 21 °C | 2% | 0% | 50% | 764 mm Hg | NE 38° 11.39 (13.33) m/s | 0 |
| 01:00 | Clear | 20 °C | 4% | 0% | 64% | 764 mm Hg | NE 43° 11.11 (12.61) m/s | 0 |
| 02:00 | Clear | 20 °C | 4% | 0% | 63% | 764 mm Hg | NE 42° 10.61 (12.31) m/s | 0 |
| 03:00 | Clear | 19 °C | 5% | 12% | 66% | 764 mm Hg | NE 41° 10.19 (12.25) m/s | 0 |
| 04:00 | Clear | 19 °C | 6% | 5% | 70% | 764 mm Hg | NE 43° 10.31 (12.22) m/s | 0 |
| 05:00 | Clear | 19 °C | 6% | 3% | 70% | 764 mm Hg | NE 42° 10 (12.31) m/s | 0 |
| 06:00 | Clear | 19 °C | 6% | 0% | 70% | 765 mm Hg | NE 38° 9.69 (12.19) m/s | 0 |
| 07:00 | Clear | 18 °C | 6% | 0% | 69% | 765 mm Hg | NE 38° 9.61 (12.5) m/s | 0 |
| 08:00 | Sunny | 18 °C | 7% | 0% | 73% | 766 mm Hg | NE 39° 9.81 (12.44) m/s | 0 |
| 09:00 | Sunny | 18 °C | 6% | 0% | 71% | 767 mm Hg | NE 42° 9.89 (12.86) m/s | 0.5 |
| 10:00 | Sunny | 19 °C | 5% | 0% | 69% | 767 mm Hg | NE 43° 10.19 (12.61) m/s | 1.6 |
| 11:00 | Sunny | 21 °C | 4% | 0% | 65% | 767 mm Hg | NE 48° 10.11 (11.22) m/s | 3.4 |
| 12:00 | Sunny | 22 °C | 3% | 0% | 60% | 767 mm Hg | NE 50° 9.5 (10.22) m/s | 5.3 |
| 13:00 | Sunny | 23 °C | 3% | 0% | 56% | 766 mm Hg | NE 54° 9.31 (9.81) m/s | 6.5 |
| 14:00 | Sunny | 24 °C | 2% | 0% | 54% | 765 mm Hg | NE 56° 8.69 (9.33) m/s | 6.6 |
| 15:00 | Sunny | 24 °C | 2% | 0% | 51% | 764 mm Hg | NE 56° 8.5 (9.22) m/s | 5.2 |
| 16:00 | Sunny | 25 °C | 2% | 0% | 50% | 764 mm Hg | ENE 57° 8.11 (9.22) m/s | 2.1 |
| 17:00 | Sunny | 25 °C | 2% | 5% | 53% | 764 mm Hg | NE 54° 9.81 (14.81) m/s | 1.4 |
| 18:00 | Sunny | 24 °C | 3% | 13% | 55% | 764 mm Hg | NE 53° 9.81 (14.81) m/s | 0.5 |
| 19:00 | Clear | 22 °C | 4% | 2% | 62% | 765 mm Hg | NE 47° 10.89 (15.89) m/s | 0 |
| 20:00 | Clear | 21 °C | 4% | 0% | 65% | 766 mm Hg | NE 44° 10.61 (11.22) m/s | 0 |
| 21:00 | Clear | 21 °C | 5% | 0% | 66% | 766 mm Hg | NE 42° 11.19 (12.11) m/s | 0 |
| 22:00 | Clear | 20 °C | 5% | 0% | 67% | 767 mm Hg | NE 40° 10.69 (12.5) m/s | 0 |
| 23:00 | Clear | 20 °C | 5% | 0% | 68% | 767 mm Hg | NE 38° 10.19 (12.42) m/s | 0 |
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.