5-day weather forecast St. Louis Sep 30, 2026
33°Weather forecast St. Louis tomorrow Sep 30, 2026: overcast, temperature from 22 °C to 33 °C.
Precipitation probability 10%. Wind up to 6 m/s (gusts 14.31 m/s). Air humidity 29–45%, atmospheric pressure 756–759 mm Hg, UV index up to 5.8.
5 days at a glance — tap a day to open it
Sunrise 06:55
Sunset 18:45
Sunset 18:45
Waning Gibbous75% illuminated
Moonrise 20:43 · Moonset 11:14
Moonrise 20:43 · Moonset 11:14
Chart
Table
| Time | Weather | Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index |
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Overcast | 24 °C | 10% | 100% | 37% | 759 mm Hg | SSE 154° 3.61 (9.22) m/s | 0 |
| 01:00 | Overcast | 23 °C | 9% | 96% | 37% | 759 mm Hg | SSE 157° 3.5 (10.11) m/s | 0 |
| 02:00 | Overcast | 23 °C | 10% | 100% | 35% | 758 mm Hg | SSE 164° 4.19 (12.5) m/s | 0 |
| 03:00 | Overcast | 23 °C | 10% | 100% | 34% | 758 mm Hg | S 169° 4.61 (12.83) m/s | 0 |
| 04:00 |  Partly cloudy | 22 °C | 4% | 49% | 35% | 758 mm Hg | S 169° 4.19 (12.72) m/s | 0 |
| 05:00 | Overcast | 22 °C | 9% | 96% | 38% | 758 mm Hg | SSE 166° 3.61 (10.81) m/s | 0 |
| 06:00 | Overcast | 22 °C | 10% | 100% | 38% | 758 mm Hg | S 169° 3.81 (12.92) m/s | 0 |
| 07:00 | Overcast | 22 °C | 10% | 100% | 39% | 759 mm Hg | S 175° 3.61 (12.81) m/s | 0 |
| 08:00 | Overcast | 22 °C | 10% | 100% | 39% | 759 mm Hg | S 179° 3.89 (13.22) m/s | 0.2 |
| 09:00 | Overcast | 23 °C | 10% | 100% | 37% | 759 mm Hg | S 180° 4.81 (14.31) m/s | 0.9 |
| 10:00 | Overcast | 25 °C | 10% | 100% | 36% | 759 mm Hg | S 183° 5.5 (12.61) m/s | 1.6 |
| 11:00 | Overcast | 29 °C | 9% | 99% | 33% | 759 mm Hg | S 188° 6 (11.14) m/s | 2.8 |
| 12:00 | Overcast | 31 °C | 9% | 100% | 32% | 758 mm Hg | SSW 195° 5.69 (9.42) m/s | 5 |
| 13:00 |  Cloudy | 32 °C | 7% | 86% | 31% | 758 mm Hg | SSW 205° 5.61 (8.53) m/s | 5.8 |
| 14:00 | Cloudy | 33 °C | 5% | 67% | 30% | 757 mm Hg | SSW 209° 5.5 (7.72) m/s | 5.3 |
| 15:00 | Overcast | 33 °C | 9% | 100% | 29% | 756 mm Hg | SSW 206° 5.81 (8.31) m/s | 3.6 |
| 16:00 | Overcast | 33 °C | 9% | 100% | 30% | 756 mm Hg | SSW 201° 5.61 (8.31) m/s | 2.2 |
| 17:00 | Overcast | 32 °C | 9% | 100% | 31% | 756 mm Hg | SSW 195° 4.89 (10) m/s | 0.9 |
| 18:00 | Overcast | 31 °C | 10% | 100% | 35% | 756 mm Hg | S 174° 3.5 (7.5) m/s | 0.1 |
| 19:00 | Overcast | 31 °C | 10% | 100% | 36% | 756 mm Hg | S 183° 4.19 (9.22) m/s | 0 |
| 20:00 | Overcast | 30 °C | 10% | 100% | 38% | 756 mm Hg | S 187° 3.19 (8.69) m/s | 0 |
| 21:00 | Overcast | 30 °C | 10% | 99% | 40% | 756 mm Hg | S 173° 3 (8.42) m/s | 0 |
| 22:00 |  Cloudy | 29 °C | 7% | 78% | 43% | 756 mm Hg | S 181° 3.31 (9) m/s | 0 |
| 23:00 | Overcast | 28 °C | 10% | 100% | 45% | 757 mm Hg | S 178° 3.39 (9.5) 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.