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)	28	27	26	26	25	25	25	23	22	21	21	21	21	22	21	23	22	21	21	21	21	20	20	18
Precipitation (mm/hr)	0	0	0	0	0	0	0.03	0.55	0.32	3.17	0.8	1.15	0.13	0.39	0.04	1.41	2.95	3.38	2.28	1.58	0.01	0	0.19	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 (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	99	50	100	100
Rain chance (%)	10	11	11	11	11	11	13	47	41	84	68	73	41	52	31	70	83	87	84	80	29	19	48	29

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)	4	3.69	3.81	4.61	4.11	3.89	2.69	2.19	1.81	1.11	2	2.5	2.61	3.19	3.31	4	2.5	1.61	0.81	0.5	3.39	4	3.89	4.39
Wind gust (m/s)	12.75	11.5	10.5	12.14	12.42	11.94	7.75	5.53	3.92	2.53	3.22	4.89	5.31	7	8.11	9.19	4.81	2.42	1.19	0.69	8.72	8.83	7.64	9
Wind direction (°)	S 188°	S 176°	S 170°	S 169°	S 180°	S 188°	SSW 198°	SW 225°	SW 235°	SW 215°	S 171°	SSE 168°	SSE 158°	S 169°	S 180°	SSW 204°	SW 219°	SW 236°	W 273°	NNW 340°	N 353°	N 359°	N 353°	N 11°

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 (%)	43	45	46	46	47	47	48	68	76	88	89	89	89	85	86	81	88	94	96	96	87	90	95	89

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)	758	758	758	758	758	758	758	760	760	761	761	761	761	761	761	761	761	761	761	762	762	762	764	764

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	0.2	0.8	1.8	2.5	1.3	0.6	0.9	0.5	0.3	0.1	0.1	0	0	0	0	0

Air quality & pollen

Air quality is available for the first three days only.

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Thu, Oct 1, 2026

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St. Louis 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 →

5-day weather forecast St. Louis Oct 1, 2026

Forecast from 18 °C to 28 °C and precipitation