5-day weather forecast St. Louis Sep 28, 2026
17°Weather forecast St. Louis today Sep 28, 2026: overcast, temperature from 16 °C to 23 °C.
Precipitation probability 13%. Wind up to 2.61 m/s (gusts 6.61 m/s). Air humidity 31–56%, atmospheric pressure 761–764 mm Hg, UV index up to 6.1.
5 days at a glance — tap a day to open it
Sunrise 06:54
Sunset 18:48
Sunset 18:48
Waning Gibbous91% illuminated
Moonrise 19:32 · Moonset 08:58
Moonrise 19:32 · Moonset 08:58
Chart
Table
Mon, Sep 28, 2026
| Time | Weather | Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index |
|---|---|---|---|---|---|---|---|---|
| 00:00 | Overcast | 18 °C | 13% | 100% | 56% | 763 mm Hg | NNE 25° 2.39 (5.03) m/s | 0 |
| 01:00 | Overcast | 18 °C | 13% | 100% | 56% | 763 mm Hg | NE 35° 2.19 (4.53) m/s | 0 |
| 02:00 | Overcast | 18 °C | 13% | 100% | 54% | 763 mm Hg | NE 54° 2 (4.42) m/s | 0 |
| 03:00 | Overcast | 18 °C | 12% | 100% | 52% | 763 mm Hg | ENE 63° 1.89 (3.94) m/s | 0 |
| 04:00 | Overcast | 17 °C | 12% | 100% | 52% | 763 mm Hg | ENE 66° 2 (3.61) m/s | 0 |
| 05:00 | Overcast | 17 °C | 12% | 100% | 52% | 764 mm Hg | ENE 69° 1.89 (3.22) m/s | 0 |
| 06:00 | Overcast | 17 °C | 13% | 100% | 54% | 764 mm Hg | ENE 66° 2 (3.17) m/s | 0 |
| 07:00 |  Overcast | 17 °C | 13% | 100% | 53% | 764 mm Hg | ENE 63° 2.19 (3.53) m/s | 0 |
| 08:00 | Overcast | 16 °C | 13% | 100% | 53% | 764 mm Hg | ENE 62° 2.11 (3.64) m/s | 0.2 |
| 09:00 | Overcast | 17 °C | 12% | 100% | 52% | 764 mm Hg | ENE 67° 2 (3.22) m/s | 1 |
| 10:00 | Overcast | 17 °C | 12% | 100% | 49% | 764 mm Hg | ENE 76° 2.19 (3) m/s | 2.4 |
| 11:00 | Overcast | 18 °C | 11% | 99% | 47% | 764 mm Hg | E 86° 2.19 (2.94) m/s | 4.1 |
| 12:00 |  Cloudy | 19 °C | 9% | 87% | 44% | 764 mm Hg | E 89° 1.69 (2.33) m/s | 5.4 |
| 13:00 |  Partly cloudy | 21 °C | 2% | 27% | 38% | 764 mm Hg | ENE 72° 2 (2.33) m/s | 6.1 |
| 14:00 | Cloudy | 23 °C | 7% | 81% | 31% | 763 mm Hg | ENE 73° 2.39 (5.39) m/s | 5.6 |
| 15:00 | Overcast | 22 °C | 8% | 89% | 31% | 762 mm Hg | E 86° 2.61 (6.61) m/s | 4.2 |
| 16:00 | Overcast | 22 °C | 8% | 91% | 33% | 762 mm Hg | E 89° 1.81 (2.03) m/s | 2.5 |
| 17:00 | Cloudy | 22 °C | 7% | 83% | 33% | 762 mm Hg | E 82° 1.31 (1.69) m/s | 1.1 |
| 18:00 | Partly cloudy | 22 °C | 2% | 30% | 34% | 761 mm Hg | ENE 71° 0.89 (1.19) m/s | 0.3 |
| 19:00 |  Clear | 21 °C | 1% | 12% | 37% | 761 mm Hg | ENE 74° 0.81 (0.83) m/s | 0 |
| 20:00 |  Partly cloudy | 21 °C | 2% | 25% | 38% | 762 mm Hg | NNE 16° 1.31 (4.31) m/s | 0 |
| 21:00 | Overcast | 20 °C | 9% | 93% | 40% | 762 mm Hg | ENE 66° 1.89 (2.5) m/s | 0 |
| 22:00 | Partly cloudy | 20 °C | 3% | 34% | 42% | 762 mm Hg | ENE 74° 2.11 (3.11) m/s | 0 |
| 23:00 | Clear | 19 °C | 1% | 5% | 43% | 762 mm Hg | E 81° 2.39 (4.31) m/s | 0 |
Mon, Sep 28, 2026
Frequently asked questions about the 5-day weather in St. Louis
What will the weather be like in St. Louis over the next 5 days?
Over the next 5 days in St. Louis the temperature is expected to range from about 14 to 33 °C. See the detailed hourly forecast for each of the 5 days in the charts above.
On which of the next 5 days will it rain in St. Louis?
The chance of rain in St. Louis over the next 5 days reaches 87%. Check the 5-day precipitation chart above to see exactly which days and hours bring rain.
How accurate is the 5-day weather forecast for St. Louis?
A 5-day forecast is fairly reliable: the first 2–3 days are usually very accurate, while days 4–5 may be refined. The data is updated several times a day, so check back before important plans.
Which of the next 5 days in St. Louis will be the warmest and which the coolest?
Over the next 5 days the temperature in St. Louis ranges from about 14 to 33 °C. Compare the warmest and coolest day on the temperature chart above.
Will it be windy in St. Louis over the next 5 days?
Over the next 5 days the wind in St. Louis picks up to 7 m/s. The windiest days are easy to spot on the wind chart above.
Which day of the week in St. Louis is best for a walk or a trip?
For a walk or a trip, pick the days with the lowest chance of rain (up to 87%) and light wind — easy to compare on the 5-day charts above.
How can I best use the 5-day forecast for St. Louis?
The first 2–3 days are reliable enough for firm decisions, while days 4–5 are a guide that sharpens as they approach. The forecast is updated several times a day, so check again before important plans.
Will I need an umbrella or sunscreen in St. Louis this week?
Rain reaches a 87% chance across the next 5 days, so pack something waterproof for the wettest of them — the daily strip above shows which. Today’s UV index peaks at 6.1; sunscreen is worth it from about 3 upwards.
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.