5-day weather forecast Petersburg Sep 17, 2026
31°Weather forecast Petersburg Thursday Sep 17, 2026: sunny, temperature from 16 °C to 31 °C.
Precipitation probability 13%. Wind up to 2.5 m/s (gusts 5.81 m/s). Air humidity 25–90%, atmospheric pressure 765–770 mm Hg, UV index up to 8.
5 days at a glance — tap a day to open it
Sunrise 06:53
Sunset 19:14
Sunset 19:14
First Quarter42% illuminated
Moonrise 13:58 · Moonset 23:07
Moonrise 13:58 · Moonset 23:07
Chart
Table
| Time | Weather | Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index |
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Clear | 18 °C | 9% | 0% | 81% | 770 mm Hg | SSE 154° 1.89 (4.92) m/s | 0 |
| 01:00 | Clear | 17 °C | 10% | 0% | 83% | 770 mm Hg | SSE 160° 1.89 (4.53) m/s | 0 |
| 02:00 | Clear | 17 °C | 11% | 0% | 85% | 770 mm Hg | S 171° 1.69 (2.61) m/s | 0 |
| 03:00 | Clear | 17 °C | 12% | 0% | 87% | 770 mm Hg | S 180° 1.5 (1.61) m/s | 0 |
| 04:00 | Clear | 16 °C | 13% | 2% | 89% | 770 mm Hg | SSW 204° 1.31 (1.33) m/s | 0 |
| 05:00 | Clear | 16 °C | 13% | 5% | 90% | 770 mm Hg | WSW 237° 1.11 (1.14) m/s | 0 |
| 06:00 | Clear | 16 °C | 13% | 4% | 90% | 770 mm Hg | WSW 251° 1 (1) m/s | 0 |
| 07:00 | Sunny | 16 °C | 13% | 0% | 89% | 770 mm Hg | SW 215° 0.89 (0.92) m/s | 0 |
| 08:00 | Sunny | 18 °C | 9% | 0% | 80% | 770 mm Hg | S 181° 1.11 (1.53) m/s | 0.3 |
| 09:00 | Sunny | 20 °C | 5% | 0% | 66% | 770 mm Hg | S 179° 1.31 (1.81) m/s | 6 |
| 10:00 | Sunny | 23 °C | 2% | 0% | 54% | 770 mm Hg | S 180° 1.31 (1.72) m/s | 6 |
| 11:00 | Sunny | 26 °C | 1% | 0% | 43% | 769 mm Hg | S 177° 1.39 (1.61) m/s | 7 |
| 12:00 | Sunny | 28 °C | 1% | 0% | 35% | 769 mm Hg | S 176° 1.39 (1.61) m/s | 7 |
| 13:00 | Sunny | 29 °C | 0% | 0% | 29% | 768 mm Hg | S 172° 1.69 (1.89) m/s | 7 |
| 14:00 | Sunny | 30 °C | 0% | 0% | 26% | 767 mm Hg | S 172° 2 (2.11) m/s | 7 |
| 15:00 | Sunny | 31 °C | 0% | 0% | 25% | 767 mm Hg | S 173° 2.11 (2.19) m/s | 8 |
| 16:00 | Sunny | 31 °C | 0% | 0% | 25% | 766 mm Hg | S 175° 2.31 (2.53) m/s | 8 |
| 17:00 | Sunny | 30 °C | 0% | 0% | 27% | 766 mm Hg | S 179° 2.39 (3) m/s | 8 |
| 18:00 | Sunny | 28 °C | 1% | 0% | 40% | 765 mm Hg | S 172° 2 (3.31) m/s | 7 |
| 19:00 | Sunny | 24 °C | 1% | 4% | 46% | 766 mm Hg | S 169° 2.31 (2.5) m/s | 6 |
| 20:00 | Clear | 23 °C | 1% | 5% | 42% | 766 mm Hg | S 169° 2.31 (3.11) m/s | 0 |
| 21:00 | Clear | 23 °C | 1% | 0% | 42% | 766 mm Hg | S 175° 2.39 (3.81) m/s | 0 |
| 22:00 | Clear | 22 °C | 1% | 2% | 44% | 766 mm Hg | S 183° 2.5 (5.61) m/s | 0 |
| 23:00 |  Cloudy | 21 °C | 7% | 65% | 48% | 766 mm Hg | S 186° 2.39 (5.81) m/s | 0 |
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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.