Hour-by-hour Forecast in Sarnia — Graph
Detailed Hourly Forecast — Next 24 hours
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| Conditions | Comfort | Precipitation | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Time | Temp | Weather | Feels Like | Wind | Humidity | Chance | Amount | ||
| 2:00 pm Sat, Mar 21 |  | 41 °F | Overcast. | 36 °F | 9 mph | ↑ | 67% | 4% | 0.00" (snow) 0.00" (rain) |
| 3:00 pm | | 42 °F | Overcast. | 36 °F | 11 mph | ↑ | 66% | 5% | 0.00" (snow) 0.00" (rain) |
| 4:00 pm | | 43 °F | Overcast. | 36 °F | 12 mph | ↑ | 66% | 6% | 0.00" (snow) 0.00" (rain) |
| 5:00 pm | | 42 °F | Overcast. | 35 °F | 14 mph | ↑ | 66% | 0% | 0.00" (snow) 0.00" (rain) |
| 6:00 pm | | 42 °F | Overcast. | 35 °F | 13 mph | ↑ | 67% | 0% | 0.00" (snow) 0.00" (rain) |
| 7:00 pm | | 41 °F | Overcast. | 34 °F | 12 mph | ↑ | 69% | 0% | 0.00" (snow) 0.00" (rain) |
| 8:00 pm |  | 40 °F | Overcast. | 33 °F | 12 mph | ↑ | 72% | 0% | 0.00" (snow) 0.00" (rain) |
| 9:00 pm | | 40 °F | Overcast. | 32 °F | 13 mph | ↑ | 75% | 0% | 0.00" (snow) 0.00" (rain) |
| 10:00 pm | | 38 °F | Overcast. | 30 °F | 13 mph | ↑ | 79% | 0% | 0.00" (snow) 0.00" (rain) |
| 11:00 pm | | 38 °F | Overcast. | 29 °F | 14 mph | ↑ | 81% | 0% | 0.00" (snow) 0.00" (rain) |
| 12:00 am Sun, Mar 22 | | 38 °F | Overcast. | 30 °F | 13 mph | ↑ | 82% | 0% | 0.00" (snow) 0.00" (rain) |
| 1:00 am | | 39 °F | Overcast. | 31 °F | 12 mph | ↑ | 83% | 0% | 0.00" (snow) 0.00" (rain) |
| 2:00 am | | 39 °F | Overcast. | 32 °F | 11 mph | ↑ | 85% | 0% | 0.00" (snow) 0.00" (rain) |
| 3:00 am | | 39 °F | Overcast. | 33 °F | 8 mph | ↑ | 87% | 0% | 0.00" (snow) 0.00" (rain) |
| 4:00 am | | 40 °F | Overcast. | 35 °F | 7 mph | ↑ | 88% | 0% | 0.00" (snow) 0.00" (rain) |
| 5:00 am | | 40 °F | Overcast. | 35 °F | 7 mph | ↑ | 89% | 0% | 0.00" (snow) 0.00" (rain) |
| 6:00 am |  | 40 °F | Drizzle. Overcast. | 36 °F | 6 mph | ↑ | 91% | 21% | 0.00" (snow) 0.00" (rain) |
| 7:00 am | | 40 °F | Sprinkles. Overcast. | 36 °F | 6 mph | ↑ | 91% | 21% | 0.00" (snow) 0.00" (rain) |
| 8:00 am |  | 40 °F | Sprinkles. Overcast. | 35 °F | 8 mph | ↑ | 93% | 22% | 0.00" (snow) 0.00" (rain) |
| 9:00 am | | 41 °F | Sprinkles. Overcast. | 36 °F | 8 mph | ↑ | 90% | 26% | 0.00" (snow) 0.00" (rain) |
| 10:00 am | | 43 °F | Sprinkles. Cloudy. | 39 °F | 8 mph | ↑ | 83% | 28% | 0.00" (snow) 0.00" (rain) |
| 11:00 am | | 44 °F | Sprinkles. Overcast. | 40 °F | 9 mph | ↑ | 79% | 28% | 0.00" (snow) 0.00" (rain) |
| 12:00 pm | | 43 °F | Sprinkles. Overcast. | 37 °F | 11 mph | ↑ | 80% | 27% | 0.00" (snow) 0.00" (rain) |
| 1:00 pm | | 41 °F | Sprinkles. Overcast. | 34 °F | 13 mph | ↑ | 79% | 25% | 0.00" (snow) 0.00" (rain) |
| * Updated Saturday, March 21, 2026 9:42:39 am Sarnia time - Weather by CustomWeather, © 2026 | |||||||||