Currently: 21 °F. Mostly cloudy. (Weather station: Sarnia Airport, Canada). See more current weatherPast Weather in Sarnia — Graph
Sarnia Temperature Yesterday
Maximum temperature yesterday: 25 °F (at 2:04 am)
Minimum temperature yesterday: 10 °F (at 10:00 pm)
Average temperature yesterday: 20 °F
High & Low Weather Summary for the Past Weeks
| Temperature | Humidity | Pressure | |
|---|---|---|---|
| High | 50 °F (Nov 24, 12:58 pm) | 100% (Nov 25, 12:00 pm) | 30.50 "Hg (Nov 25, 12:00 pm) |
| Low | 7 °F (Dec 5, 2:00 am) | 33% (Dec 8, 1:00 pm) | 29.57 "Hg (Nov 26, 8:21 am) |
| Average | 31 °F | 75% | 30.03 "Hg |
| * Reported Nov 24 6:00 am — Dec 9 6:00 am, Sarnia. Weather by CustomWeather, © 2025 | |||
Note: Actual official high and low records may vary slightly from our data, if they occured in-between our weather recording intervals... More about our weather records
Sarnia Weather History for the Previous 24 Hours
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| Conditions | Comfort | |||||||
|---|---|---|---|---|---|---|---|---|
| Time | Temp | Weather | Wind | Humidity | Barometer | Visibility | ||
| 6:00 am Tue, Dec 9 |  | 21 °F | Overcast. | 9 mph | ↑ | 63% | 30.06 "Hg | 9 mi |
| 5:00 am | | 19 °F | Overcast. | 10 mph | ↑ | 63% | 30.09 "Hg | 9 mi |
| 4:00 am | | 18 °F | Overcast. | 7 mph | ↑ | 68% | 30.12 "Hg | 9 mi |
| 3:00 am | | 14 °F | Overcast. | 9 mph | ↑ | 67% | 30.16 "Hg | 9 mi |
| 2:00 am |  | 9 °F | Clear. | 6 mph | ↑ | 72% | 30.20 "Hg | 9 mi |
| 1:00 am | | 9 °F | Clear. | 7 mph | ↑ | 66% | 30.22 "Hg | 9 mi |
| 12:00 am | | 10 °F | Clear. | 5 mph | ↑ | 67% | 30.25 "Hg | 9 mi |
| 11:00 pm Mon, Dec 8 | | 10 °F | Clear. | 6 mph | ↑ | 67% | 30.26 "Hg | 9 mi |
| 10:00 pm | | 10 °F | Clear. | 3 mph | ↑ | 67% | 30.29 "Hg | 9 mi |
| 9:00 pm | | 12 °F | Clear. | 3 mph | ↑ | 62% | 30.32 "Hg | 9 mi |
| 8:00 pm | | 16 °F | Clear. | 3 mph | ↑ | 53% | 30.35 "Hg | 9 mi |
| 7:00 pm | | 16 °F | Clear. | 5 mph | ↑ | 57% | 30.36 "Hg | 9 mi |
| 6:00 pm | | 18 °F | Clear. | 5 mph | ↑ | 49% | 30.38 "Hg | 9 mi |
| 5:00 pm | | 21 °F | Clear. | 2 mph | ↑ | 42% | 30.36 "Hg | 9 mi |
| 4:00 pm |  | 23 °F | Sunny. | 5 mph | ↑ | 39% | 30.37 "Hg | 9 mi |
| 3:00 pm | | 23 °F | Sunny. | 6 mph | ↑ | 36% | 30.36 "Hg | 9 mi |
| 2:00 pm |  | 25 °F | Scattered clouds. | 5 mph | ↑ | 36% | 30.37 "Hg | 9 mi |
| 1:00 pm | | 25 °F | Partly sunny. | 3 mph | ↑ | 33% | 30.39 "Hg | 9 mi |
| 12:00 pm | | 23 °F | Partly sunny. | 5 mph | ↑ | 42% | 30.40 "Hg | 9 mi |
| 11:00 am |  | 21 °F | Overcast. | 6 mph | ↑ | 54% | 30.42 "Hg | 9 mi |
| 10:00 am | | 19 °F | Broken clouds. | 3 mph | ↑ | 53% | 30.42 "Hg | 9 mi |
| 9:00 am | | 18 °F | Partly sunny. | 3 mph | ↑ | 62% | 30.42 "Hg | 9 mi |
| 8:00 am | | 16 °F | Partly sunny. | 6 mph | ↑ | 73% | 30.41 "Hg | 9 mi |
| 7:00 am | | 19 °F | Overcast. | 5 mph | ↑ | 63% | 30.40 "Hg | 9 mi |
| Weather by CustomWeather, © 2025 | ||||||||