Weather in Collinsville, United States 🇺🇸
Weather Forecast in Collinsville
Right now Collinsville is 27°C with clear, feeling like 31°C. Humidity is 97% with winds around 12 km/h, and the UV index is 0 (low). The next few days in Collinsville look set for about 13°C up to 33°C. ⚠️ Heat Advisory issued July 20 at 8:23PM CDT until July 21 at 7:00PM CDT by NWS St Louis MO
Hourly Forecast for Collinsville
14-Day Forecast for Collinsville
Sunny
Sunny
Sunny
Light rain
Fog
Sunny
Sunny
Sunny
Sunny
Sunny
Partly Cloudy
Sunny
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Sunny
Additional Forecasts for Collinsville
Air Quality
Historical Weather
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Best Time to Be Outside in Collinsville Today
The most comfortable window in Collinsville today looks like 20:00 to 20:00, when it is around 24°C. It should stay dry through that window. The next likely rain is around 07:00.
Frequently Asked Questions about Weather in Collinsville
What is the temperature in Collinsville right now?
Collinsville is sitting at 27°C (80°F) right now, clear (feels like 31°C).
What's the weather like in Collinsville right now?
Current weather in Collinsville: Clear, humidity 97%, wind 12 km/h SW.
What is today's forecast for Collinsville?
Today in Collinsville: high 33°C, low 21°C, sunny. Chance of rain: 59%.
What is the 7-day weather forecast for Collinsville?
Daily highs and lows for Collinsville:
- 2026-07-21: 33°C / 21°C
- 2026-07-22: 25°C / 17°C
- 2026-07-23: 23°C / 13°C
- 2026-07-24: 19°C / 16°C
- 2026-07-25: 26°C / 16°C
- 2026-07-26: 32°C / 22°C
- 2026-07-27: 32°C / 24°C
Is it going to rain in Collinsville today?
There is a 59% chance of rain in Collinsville today. Total expected precipitation: 3.63 mm.
What is the wind speed in Collinsville right now?
Wind in Collinsville is currently 12 km/h (8 mph) from the SW.
What is the UV index in Collinsville right now?
The UV index in Collinsville is currently 0 (low). Sun protection is recommended when the index is 3 or higher.
