St. Louis, MO Hourly Forecast
St. Louis temperature trend - Next 24 hours
The next 24 hours at a glance
- Warmest hour: 4 PM - around 104°
- Coolest hour: 7 AM - around 74°
- Highest rain chance: 4 AM (48%) - pack accordingly
- UV peak: 1 PM at index 8 - sun protection recommended
- Windiest: 7 PM at 11 mph
St. Louis hourly weather - Thursday, August 13
In St. Louis, expect a high near 104°F (40°C) around 4 PM and a low of 81°F (27°C) near 9 AM, with no meaningful precipitation risk.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 9 AM | Sunny | 81° | 87° | 9% | 2 mph WSW | 80% | 2 | |
| 10 AM | Sunny | 85° | 93° | 6% | 2 mph SSW | 73% | 4 | |
| 11 AM | Sunny | 93° | 108° | 4% | 4 mph SSE | 67% | 5 | |
| 12 PM | Sunny | 96° | 111° | 3% | 6 mph SE | 61% | 6 | |
| 1 PM | Sunny | 100° | 114° | 2% | 8 mph S | 54% | 8 | |
| 2 PM | Sunny | 102° | 117° | 1% | 8 mph SSW | 46% | 7 | |
| 3 PM | Sunny | 104° | 110° | 1% | 7 mph SSW | 39% | 5 | |
| 4 PM | Sunny | 104° | 112° | 1% | 5 mph S | 40% | 4 | |
| 5 PM | Thundery outbreaks in nearby | 101° | 105° | 2% | 4 mph SE | 35% | 2 | |
| 6 PM | Thundery outbreaks in nearby | 97° | 106° | 4% | 8 mph SE | 44% | 1 | |
| 7 PM | Sunny | 92° | 100° | 3% | 11 mph SE | 51% | 0 | |
| 8 PM | Thundery outbreaks in nearby | 89° | 95° | 11% | 4 mph SE | 56% | 0 | |
| 9 PM | Thundery outbreaks in nearby | 89° | 95° | 4% | 5 mph NE | 56% | 0 | |
| 10 PM | Clear | 89° | 95° | 3% | 9 mph E | 56% | 0 | |
| 11 PM | Clear | 86° | 92° | 5% | 10 mph ESE | 63% | 0 |
St. Louis hourly weather - Friday, August 14
In St. Louis, expect a high near 102°F (39°C) around 1 PM and a low of 74°F (24°C) near 7 AM; precipitation risk peaks at 48% around 4 AM.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 12 AM | Clear | 83° | 88° | 6% | 6 mph ESE | 68% | 0 | |
| 1 AM | Patchy rain nearby | 81° | 85° | 19% | 5 mph SE | 69% | 0 | |
| 2 AM | Patchy rain nearby | 79° | 83° | 37% | 4 mph SE | 73% | 0 | |
| 3 AM | Patchy rain nearby | 77° | 82° | 47% | 5 mph SSE | 77% | 0 | |
| 4 AM | Patchy rain nearby | 77° | 81° | 48% | 6 mph SSW | 77% | 0 | |
| 5 AM | Patchy rain nearby | 75° | 79° | 28% | 6 mph SSW | 83% | 0 | |
| 6 AM | Patchy rain nearby | 75° | 78° | 33% | 6 mph SSW | 83% | 0 | |
| 7 AM | Patchy rain nearby | 74° | 79° | 46% | 6 mph SSW | 85% | 0 | |
| 8 AM | Sunny | 79° | 83° | 10% | 5 mph SSW | 80% | 1 | |
| 9 AM | Sunny | 84° | 89° | 5% | 7 mph SW | 66% | 2 | |
| 10 AM | Sunny | 91° | 95° | 2% | 8 mph SW | 47% | 4 | |
| 11 AM | Sunny | 96° | 97° | 1% | 9 mph WSW | 37% | 6 | |
| 12 PM | Sunny | 99° | 100° | 1% | 8 mph W | 31% | 8 | |
| 1 PM | Sunny | 102° | 102° | 1% | 6 mph WSW | 28% | 8 | |
| 2 PM | Sunny | 101° | 102° | 1% | 8 mph SW | 31% | 8 | |
| 3 PM | Sunny | 97° | 98° | 1% | 8 mph SSW | 37% | 6 | |
| 4 PM | Sunny | 97° | 99° | 1% | 7 mph S | 38% | 4 | |
| 5 PM | Sunny | 101° | 103° | 1% | 6 mph SSE | 33% | 2 | |
| 6 PM | Sunny | 99° | 102° | 1% | 7 mph SSE | 37% | 1 | |
| 7 PM | Sunny | 94° | 99° | 2% | 8 mph SSE | 43% | 0 | |
| 8 PM | Clear | 91° | 93° | 2% | 8 mph SE | 45% | 0 | |
| 9 PM | Clear | 90° | 92° | 2% | 10 mph SSE | 44% | 0 | |
| 10 PM | Clear | 89° | 91° | 2% | 10 mph S | 44% | 0 | |
| 11 PM | Clear | 87° | 89° | 2% | 9 mph S | 49% | 0 |
St. Louis hourly weather - Saturday, August 15
In St. Louis, expect a high near 107°F (42°C) around 4 PM and a low of 81°F (27°C) near 7 AM; precipitation risk peaks at 18% around 9 AM.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 12 AM | Clear | 85° | 87° | 3% | 8 mph SSW | 52% | 0 | |
| 1 AM | Clear | 84° | 86° | 2% | 8 mph SSW | 51% | 0 | |
| 2 AM | Clear | 84° | 85° | 2% | 8 mph SSW | 48% | 0 | |
| 3 AM | Clear | 84° | 84° | 2% | 8 mph SW | 47% | 0 | |
| 4 AM | Clear | 83° | 84° | 2% | 8 mph SW | 47% | 0 | |
| 5 AM | Clear | 83° | 83° | 2% | 8 mph SW | 46% | 0 | |
| 6 AM | Clear | 82° | 82° | 2% | 7 mph SW | 47% | 0 | |
| 7 AM | Sunny | 81° | 82° | 2% | 7 mph SW | 50% | 0 | |
| 8 AM | Sunny | 84° | 85° | 2% | 7 mph SW | 49% | 1 | |
| 9 AM | Patchy rain nearby | 89° | 90° | 18% | 8 mph WSW | 42% | 2 | |
| 10 AM | Sunny | 93° | 92° | 1% | 9 mph WSW | 36% | 4 | |
| 11 AM | Sunny | 97° | 95° | 1% | 10 mph WSW | 30% | 6 | |
| 12 PM | Sunny | 101° | 98° | 1% | 10 mph WSW | 26% | 8 | |
| 1 PM | Sunny | 104° | 101° | 1% | 9 mph WSW | 23% | 7 | |
| 2 PM | Sunny | 106° | 103° | 1% | 9 mph WSW | 21% | 6 | |
| 3 PM | Sunny | 107° | 104° | 1% | 9 mph WSW | 20% | 6 | |
| 4 PM | Sunny | 107° | 105° | 1% | 9 mph SW | 21% | 4 | |
| 5 PM | Sunny | 106° | 105° | 1% | 10 mph SSW | 23% | 2 | |
| 6 PM | Sunny | 103° | 103° | 1% | 9 mph SSW | 28% | 1 | |
| 7 PM | Sunny | 98° | 98° | 1% | 8 mph S | 34% | 0 | |
| 8 PM | Clear | 95° | 94° | 1% | 8 mph S | 32% | 0 | |
| 9 PM | Clear | 94° | 92° | 1% | 8 mph SSW | 33% | 0 | |
| 10 PM | Clear | 92° | 92° | 1% | 8 mph SSW | 35% | 0 | |
| 11 PM | Clear | 89° | 88° | 1% | 8 mph SSW | 39% | 0 |
Quick answers for the hours ahead
What is the warmest hour in St. Louis today?
Will it rain in St. Louis tonight?
When is the UV index highest in St. Louis today?
St. Louis hour-by-hour: what to expect
Over the next 24 hours in St. Louis, temperatures range from 74°F (24°C) around 7 AM up to 104°F (40°C) near 4 PM - about 19°F (11°C) above the typical August high of 85°F (30°C).
Precipitation is a real possibility: the chance of rain peaks at 48% around 4 AM. UV reaches 8 (1 PM) - sun protection recommended through midday.
The “feels like” column blends humidity and wind into an apparent temperature - see how it works in our feels-like temperature guide. Planning further ahead? Check the St. Louis 14-day forecast or the monthly climate averages.