Currently: 21 °F. Mostly cloudy. (Weather station: Sarnia Airport, Canada). See more current weatherSarnia Extended Forecast with high and low temperatures
2 Week Extended Forecast in Sarnia, Ontario, Canada
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| Conditions | Comfort | Precipitation | Sun | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Day | Temperature | Weather | Feels Like | Wind | Humidity | Chance | Amount | UV | Sunrise | Sunset | ||
| Tue Dec 9 |  | 34 / 9 °F | Light snow. Overcast. | 19 °F | 19 mph | ↑ | 83% | 63% | 1.45" | 0 (Low) | 7:49 am | 4:54 pm |
| Wed Dec 10 |  | 37 / 20 °F | Snow changing to rain. Overcast. | 22 °F | 23 mph | ↑ | 84% | 86% | 3.59" | 0 (Low) | 7:50 am | 4:54 pm |
| Thu Dec 11 |  | 29 / 19 °F | Mostly cloudy. | 18 °F | 13 mph | ↑ | 73% | 5% | 0.00" | 0 (Low) | 7:50 am | 4:54 pm |
| Fri Dec 12 |  | 30 / 14 °F | Overcast. | 20 °F | 10 mph | ↑ | 84% | 5% | 0.00" | 0 (Low) | 7:51 am | 4:54 pm |
| Sat Dec 13 | | 24 / 15 °F | Light snow late. Overcast. | 10 °F | 12 mph | ↑ | 77% | 18% | 0.46" | 0 (Low) | 7:52 am | 4:55 pm |
| Sun Dec 14 | | 18 / 8 °F | Light snow late. Mostly cloudy. | 2 °F | 18 mph | ↑ | 71% | 24% | 0.80" | 0 (Low) | 7:53 am | 4:55 pm |
| Mon Dec 15 | | 24 / 7 °F | Overcast. | 15 °F | 8 mph | ↑ | 79% | 18% | 0.18" | 0 (Low) | 7:54 am | 4:55 pm |
| Tue Dec 16 |  | 24 / 5 °F | Morning clouds. | 12 °F | 14 mph | ↑ | 83% | 5% | 0.00" | 0 (Low) | 7:54 am | 4:55 pm |
| Wed Dec 17 | | 33 / 22 °F | Rain changing to snow. Overcast. | 20 °F | 22 mph | ↑ | 94% | 70% | 3.09" | 0 (Low) | 7:55 am | 4:56 pm |
| Thu Dec 18 | | 34 / 30 °F | Light snow. Partly cloudy. | 24 °F | 14 mph | ↑ | 83% | 54% | 0.69" | 0 (Low) | 7:55 am | 4:56 pm |
| Fri Dec 19 | | 34 / 24 °F | Light snow. Overcast. | 17 °F | 11 mph | ↑ | 78% | 50% | 0.90" | 0 (Low) | 7:56 am | 4:57 pm |
| Sat Dec 20 | | 30 / 23 °F | Light snow. Cloudy. | 14 °F | 16 mph | ↑ | 84% | 67% | 2.96" | 0 (Low) | 7:57 am | 4:57 pm |
| Sun Dec 21 | | 26 / 22 °F | Light snow late. Cloudy. | 20 °F | 6 mph | ↑ | 83% | 51% | 0.30" | 0 (Low) | 7:57 am | 4:57 pm |
| Mon Dec 22 | | 31 / 22 °F | Light icy mix late. Increasing cloudiness. | 21 °F | 12 mph | ↑ | 98% | 52% | 0.07" | 0 (Low) | 7:58 am | 4:58 pm |
| Tue Dec 23 | | 37 / 25 °F | Cloudy. | 34 °F | 4 mph | ↑ | 96% | 6% | 0.00" | 0 (Low) | 7:58 am | 4:59 pm |
| * Updated Tuesday, December 9, 2025 4:23:58 am Sarnia time - Weather by CustomWeather, © 2025 | ||||||||||||