Weather in Sarnia, Canada 🇨🇦
The current temperature in Sarnia is 13°C, sunny, feeling like 6°C. Expect 58% humidity and winds of about 33 km/h, and the UV index is 1 (low). In the days ahead, expect temperatures in Sarnia from about 7°C to 23°C.
Hourly Forecast for Sarnia
14-Day Forecast for Sarnia
Sunny
Sunny
Sunny
Sunny
Overcast
Sunny
Overcast
Partly Cloudy
Overcast
Patchy rain nearby
Sunny
Sunny
Overcast
Overcast
Additional Forecasts for Sarnia
Air Quality
Historical Weather
Weather Forecasts for Other Cities in Canada
Best Time to Be Outside in Sarnia Today
The most comfortable window in Sarnia today looks like 16:00 to 19:00, when it is around 15°C. It should stay dry through that window. No significant rain is expected in the next several hours.
Frequently Asked Questions about Weather in Sarnia
What is the temperature in Sarnia right now?
The current temperature in Sarnia is 13°C (55°F), sunny (feels like 6°C).
What's the weather like in Sarnia right now?
Conditions in Sarnia right now: Sunny, humidity 58%, wind 33 km/h NW.
What is today's forecast for Sarnia?
Today in Sarnia: high 15°C, low 10°C, sunny. Chance of rain: 3%.
What is the 7-day weather forecast for Sarnia?
Daily highs and lows for Sarnia:
- 2026-10-05: 15°C / 10°C
- 2026-10-06: 18°C / 7°C
- 2026-10-07: 23°C / 13°C
- 2026-10-08: 18°C / 12°C
- 2026-10-09: 19°C / 9°C
- 2026-10-10: 19°C / 10°C
- 2026-10-11: 24°C / 15°C
Is it going to rain in Sarnia today?
There is a 3% chance of rain in Sarnia today.
What is the wind speed in Sarnia right now?
Wind in Sarnia is currently 33 km/h (21 mph) from the NW.
What is the UV index in Sarnia right now?
The UV index in Sarnia is currently 1 (low). Sun protection is recommended when the index is 3 or higher.
