5-day weather forecast Petersburg 21-03-2026
Weather forecast Petersburg Saturday 21 March 21.03.2026: partly cloudy, temperature from 6 °C to 18 °C.
No precipitation expected. Wind up to 2.89 m/s (gusts 6 m/s). Air humidity 46–90%, atmospheric pressure 759–764 mm Hg, UV index up to 5.5.
Sunrise 07:17
Sunset 19:20
Sunset 19:20
Chart
Table
Type of temperature:
°C
°F| Temperature | Precipitation | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Partly cloudy | 11 °C | 0% | 65% | 67% | 761 mm Hg | SSE 153° 1.39 (2.89) m/s | 0 |
| 01:00 | Partly cloudy | 10 °C | 0% | 82% | 67% | 760 mm Hg | SSE 166° 1.61 (3.19) m/s | 0 |
| 02:00 |  Overcast | 9 °C | 0% | 99% | 68% | 760 mm Hg | S 177° 1.61 (3.25) m/s | 0 |
| 03:00 | Partly cloudy | 7 °C | 0% | 45% | 88% | 763 mm Hg | S 172° 1.61 (3.36) m/s | 0 |
| 04:00 | Partly cloudy | 7 °C | 0% | 44% | 89% | 763 mm Hg | SSE 161° 1.31 (2.72) m/s | 0 |
| 05:00 | Partly cloudy | 6 °C | 0% | 47% | 85% | 763 mm Hg | SSE 166° 1.39 (2.89) m/s | 0 |
| 06:00 | Partly cloudy | 6 °C | 0% | 33% | 90% | 763 mm Hg | SSW 213° 1.5 (3.14) m/s | 0 |
| 07:00 | Partly cloudy | 6 °C | 0% | 28% | 90% | 763 mm Hg | SSW 204° 1.5 (3.14) m/s | 0 |
| 08:00 |  Partly cloudy | 8 °C | 0% | 28% | 85% | 763 mm Hg | SSW 202° 1.69 (3.33) m/s | 0 |
| 09:00 | Partly cloudy | 10 °C | 0% | 30% | 73% | 764 mm Hg | SSW 199° 1.89 (2.47) m/s | 0.8 |
| 10:00 | Partly cloudy | 12 °C | 0% | 27% | 63% | 764 mm Hg | S 185° 1.89 (2.19) m/s | 2.1 |
| 11:00 |  Sunny | 14 °C | 0% | 24% | 56% | 764 mm Hg | S 183° 2.31 (2.64) m/s | 3.5 |
| 12:00 | Partly cloudy | 15 °C | 0% | 32% | 51% | 763 mm Hg | S 187° 2.39 (2.75) m/s | 4.8 |
| 13:00 | Partly cloudy | 16 °C | 0% | 59% | 50% | 763 mm Hg | SSW 203° 2.61 (3) m/s | 5.5 |
| 14:00 | Partly cloudy | 17 °C | 0% | 48% | 48% | 762 mm Hg | SSW 197° 2.89 (3.33) m/s | 4.9 |
| 15:00 |  Overcast | 18 °C | 0% | 88% | 46% | 761 mm Hg | SSW 198° 2.69 (3.11) m/s | 4.1 |
| 16:00 | Overcast | 17 °C | 0% | 98% | 49% | 761 mm Hg | SSW 211° 2.69 (3.36) m/s | 2.6 |
| 17:00 |  Cloudy | 16 °C | 0% | 86% | 60% | 761 mm Hg | SSW 208° 1.89 (2.97) m/s | 1.2 |
| 18:00 | Overcast | 15 °C | 0% | 100% | 66% | 761 mm Hg | SW 216° 2.11 (3.67) m/s | 0.4 |
| 19:00 | Overcast | 14 °C | 0% | 100% | 71% | 762 mm Hg | SW 218° 2.19 (4.03) m/s | 0 |
| 20:00 | Overcast | 14 °C | 0% | 100% | 75% | 762 mm Hg | SSW 198° 1.81 (3.64) m/s | 0 |
| 21:00 | Partly cloudy | 13 °C | 0% | 26% | 82% | 759 mm Hg | ESE 106° 1.61 (3.36) m/s | 0 |
| 22:00 |  Clear | 12 °C | 0% | 12% | 86% | 760 mm Hg | ESE 118° 1.81 (3.78) m/s | 0 |
| 23:00 | Partly cloudy | 12 °C | 0% | 30% | 66% | 761 mm Hg | SSE 159° 2.89 (6) m/s | 0 |
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.