5-day weather forecast Petersburg 17-05-2026

Weather forecast Petersburg today 17.05.2026: sunny, temperature from 18 °C to 37 °C.

No precipitation expected. Wind up to 3.5 m/s (gusts 6.72 m/s). Air humidity 22–79%, atmospheric pressure 764–766 mm Hg, UV index up to 8.7.

Sunrise 05:59
Sunset 20:13

Waxing Crescent0% illuminated
Moonrise 06:10 · Moonset 21:51

Chart

Table

Sun, May 17, 2026

Mon, May 18 →

Forecast from 18 °C to 37 °C and precipitation

Temperature & Precipitation
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Temperature (°C)	22	22	21	20	19	18	19	21	24	26	30	33	35	36	37	37	37	35	31	27	25	23	22	22
Precipitation (mm/hr)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

Cloud cover and precipitation probability

Cloud cover & Rain chance
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Cloud cover (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	5	5	0	20	23	18	16	12	16
Rain chance (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

Wind speed and direction

Wind & Wind gust
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Wind (m/s)	2.89	3	3.19	2.89	2.61	2.31	1.81	2.11	2.19	2.11	1.81	1.89	2.11	2.11	2.5	2.61	3.19	3.5	2.81	0.89	2.81	2.19	1.89	1.69
Wind gust (m/s)	6.08	6.31	6.72	6.08	5.47	4.83	3.78	4.42	3.5	2.58	2.08	2.19	2.42	2.42	2.89	3	3.67	4.22	4	1.86	5.78	4.61	4	3.58
Wind direction (°)	SSW 201°	SSW 201°	SSW 208°	SW 215°	SW 214°	SW 219°	WSW 252°	SW 216°	WSW 238°	WSW 237°	SW 217°	SSW 204°	SSW 200°	SSW 208°	SW 219°	SW 225°	SW 221°	SW 230°	SW 226°	ENE 75°	ENE 72°	ESE 117°	SSE 157°	SSE 168°

Air humidity

Humidity
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Humidity (%)	51	55	57	60	64	72	64	62	49	44	40	37	34	30	27	26	24	22	36	54	69	76	78	79

Atmospheric pressure

Pressure
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Pressure (mm Hg)	764	764	764	764	764	764	765	765	766	766	766	766	765	765	764	764	764	764	764	764	765	765	766	766

Ultraviolet index

UV Index
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
UV Index	0	0	0	0	0	0	0	0.2	0.8	2.2	4.1	6.2	8	8.7	8.3	6.5	4.8	2.8	1.2	0.4	0	0	0	0

Air quality & pollen

Air quality
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
PM2.5 (µg/m³)	7.7	7.6	7.6	7.8	8.5	9.6	11.1	12.6	12.9	12.1	11.3	11	11.1	11.2	11.3	12.7	13.8	14.4	14.1	13.4	12.7	11.9	11.2	9.8
PM10 (µg/m³)	8.7	8.6	8.8	9.1	9.8	11.2	12.8	14.3	14.4	13.6	12.8	12.7	13.1	13.4	13.4	14.3	15.2	15.9	15.7	15	14.4	13.7	13.2	11.5
Ozone (O₃) (µg/m³)	80	77	72	68	68	77	91	104	113	121	126	129	129	125	113	96	85	84	88	90	88	83	79	74
NO₂ (µg/m³)	3.8	3.9	4	4.1	4	3.6	2.9	2.4	2.1	2	1.9	1.7	1.5	1.9	3.4	5.4	6.8	7.1	6.7	6.2	5.6	4.9	4.4	4.3
SO₂ (µg/m³)	1.6	1.6	1.6	1.7	1.7	1.7	1.8	1.8	1.8	1.8	1.8	1.7	1.6	1.6	1.6	1.7	1.8	1.8	1.8	1.8	1.7	1.7	1.6	1.6
CO (µg/m³)	136.9	137.9	140.9	145.9	150.9	155.9	160.9	162.9	159.9	154.9	150.9	147.9	145.9	147.9	159.9	176.9	186.9	183.9	175.9	167.9	164.9	162.9	161.9	160.9

Sun, May 17, 2026

Mon, May 18 →

Frequently asked questions about the weather in Petersburg

Today in Petersburg the temperature ranges from 18 °C to 37 °C, wind up to 3.5 m/s. Check the detailed hourly forecast above for more information.

The precipitation probability in Petersburg today is 0%. View the full multi-day forecast above to see the rain chances for each upcoming day.

The wind speed in Petersburg today reaches up to 3.5 m/s with gusts up to 6.72 m/s. Check the detailed wind chart above for hourly wind data.

The air humidity in Petersburg today ranges from 22% to 79%. View the humidity chart above for hourly details.

The UV index in Petersburg today reaches up to 8.7. Check the UV index chart above for hourly values throughout the day.

The atmospheric pressure in Petersburg today ranges from 764 to 766 mm Hg. View the pressure chart above for hourly readings.

Cloud cover in Petersburg today reaches up to 23%. Check the cloud cover chart above for hourly details throughout the day.

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.

Learn more about our methodology →