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Granite City weather
Current conditions and a 14-day forecast for Granite City, United States. Looking for typical seasonal weather instead? See the historical climate averages.
Now
30°C
Partly cloudy · feels 34°C
Humidity
72%
relative humidity
Wind
12 km/h
10m wind speed
Chance of rain
5%
today
Is today unusual?
Close to typical for this date
Based on 150 comparable days across 10 years on record (same calendar week, excluding this year).
- This date last year: 29°C / 24°C
- Hottest on record: 38°C on Jul 22, 2017 (archive begins 2016)
- Coldest on record: -22°C on Jan 1, 2018 (archive begins 2016)
This compares today's forecast against the historical archive, not a live measurement. See the full historical breakdown for any past date.
Next 24 hours in Granite City
| Time | Conditions | Temp | Rain chance |
|---|---|---|---|
| 12pm | Partly cloudy | 30°C | 4% |
| 1pm | Overcast | 30°C | 3% |
| 2pm | Overcast | 30°C | 4% |
| 3pm | Mainly clear | 33°C | 2% |
| 4pm | Clear sky | 33°C | 2% |
| 5pm | Clear sky | 32°C | 2% |
| 6pm | Clear sky | 32°C | 3% |
| 7pm | Clear sky | 31°C | 4% |
| 8pm | Clear sky | 30°C | 2% |
| 9pm | Clear sky | 29°C | 5% |
| 10pm | Clear sky | 28°C | 3% |
| 11pm | Clear sky | 27°C | 3% |
| 12am | Clear sky | 26°C | 5% |
| 1am | Clear sky | 26°C | 2% |
| 2am | Clear sky | 25°C | 2% |
| 3am | Clear sky | 25°C | 3% |
| 4am | Overcast | 25°C | 4% |
| 5am | Clear sky | 24°C | 4% |
| 6am | Clear sky | 24°C | 4% |
| 7am | Clear sky | 25°C | 4% |
| 8am | Clear sky | 27°C | 4% |
| 9am | Clear sky | 29°C | 3% |
| 10am | Clear sky | 30°C | 3% |
| 11am | Clear sky | 32°C | 3% |
14-day forecast for Granite City
| Day | Conditions | High / Low | Rain chance |
|---|---|---|---|
| Today | Overcast | 33° / 23° | 5% |
| Sat, Jul 18 | Overcast | 34° / 24° | 7% |
| Sun, Jul 19 | Moderate drizzle | 36° / 25° | 39% |
| Mon, Jul 20 | Overcast | 39° / 26° | 8% |
| Tue, Jul 21 | Light drizzle | 34° / 22° | 8% |
| Wed, Jul 22 | Overcast | 25° / 18° | 5% |
| Thu, Jul 23 | Overcast | 28° / 17° | 3% |
| Fri, Jul 24 | Overcast | 27° / 20° | 17% |
| Sat, Jul 25 | Overcast | 30° / 20° | 10% |
| Sun, Jul 26 | Partly cloudy | 29° / 20° | 8% |
| Mon, Jul 27 | Clear sky | 32° / 20° | 10% |
| Tue, Jul 28 | Light drizzle | 36° / 22° | 14% |
| Wed, Jul 29 | Light drizzle | 41° / 24° | 16% |
| Thu, Jul 30 | Light drizzle | 40° / 27° | 19% |
About this forecast
- Source
- Open-Meteo, blending national weather-service models (incl. ECMWF and NOAA GFS)
- Conditions as of
- 12:15 PM local time
- Forecast point
- 38.750, -90.250, ~140 m elevation
- Updates
- Refreshed roughly hourly; cached up to 10 minutes on our side
Confidence narrows for the next day or two and widens further out — treat the back end of the 14-day range as a general trend, not a precise prediction. For long-term typical conditions instead of this live forecast, see the historical climate averages linked above.
Want more sun and moon detail for Granite City? Use the sun calculator or moon calculator and search for Granite City. For a live look at any other city, try the interactive weather tool.
Frequently asked questions
What's the weather like in Granite City today?
Current conditions and today's forecast for Granite City, United States are shown above, refreshed regularly through the day.
How accurate is a 14-day forecast?
A forecast is most reliable for the next 3-5 days. Beyond that, temperature and precipitation chances further out are a general trend rather than an exact prediction.
What is Granite City's weather usually like?
For long-term averages — typical monthly temperatures and rainfall based on years of historical data — see Granite City's climate page rather than this live forecast.