Past Weather in Sarnia — Graph
Sarnia Temperature Yesterday
Maximum temperature yesterday: 28 °F (at 2:00 pm)
Minimum temperature yesterday: 7 °F (at 2:00 am)
Average temperature yesterday: 20 °F
High & Low Weather Summary for the Past Weeks
| Temperature | Humidity | Pressure | |
|---|---|---|---|
| High | 52 °F (Nov 21, 1:00 pm) | 100% (Nov 25, 12:00 pm) | 30.50 "Hg (Nov 25, 12:00 pm) |
| Low | 7 °F (Dec 5, 2:00 am) | 41% (Nov 23, 3:00 pm) | 29.57 "Hg (Nov 26, 8:21 am) |
| Average | 33 °F | 76% | 30.00 "Hg |
| * Reported Nov 21 8:00 am — Dec 6 8:00 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
Scroll right to see more
| Conditions | Comfort | |||||||
|---|---|---|---|---|---|---|---|---|
| Time | Temp | Weather | Wind | Humidity | Barometer | Visibility | ||
| 8:00 am Sat, Dec 6 |  | 30 °F | Overcast. | 9 mph | ↑ | 69% | 29.80 "Hg | 9 mi |
| 7:00 am |  | 30 °F | Overcast. | 9 mph | ↑ | 69% | 29.77 "Hg | 9 mi |
| 6:27 am | | 30 °F | Overcast. | 12 mph | ↑ | 69% | 29.76 "Hg | 9 mi |
| 6:00 am | | 30 °F | Overcast. | 12 mph | ↑ | 69% | 29.76 "Hg | 9 mi |
| 5:00 am | | 30 °F | Overcast. | 10 mph | ↑ | 64% | 29.74 "Hg | 9 mi |
| 4:00 am | | 30 °F | Mostly cloudy. | 14 mph | ↑ | 64% | 29.74 "Hg | 9 mi |
| 3:32 am |  | 30 °F | Light snow. Mostly cloudy. | 14 mph | ↑ | 64% | 29.75 "Hg | 9 mi |
| 3:00 am | | 30 °F | Light snow. Overcast. | 12 mph | ↑ | 64% | 29.76 "Hg | 9 mi |
| 2:56 am | | 30 °F | Light snow. Mostly cloudy. | 14 mph | ↑ | 64% | 29.76 "Hg | 9 mi |
| 2:34 am | | 30 °F | Light snow. Mostly cloudy. | 10 mph | ↑ | 64% | 29.76 "Hg | 9 mi |
| 2:00 am | | 28 °F | Overcast. | 14 mph | ↑ | 69% | 29.77 "Hg | 9 mi |
| 1:14 am | | 28 °F | Overcast. | 15 mph | ↑ | 69% | 29.78 "Hg | 9 mi |
| 1:00 am | | 28 °F | Light snow. Overcast. | 17 mph | ↑ | 69% | 29.78 "Hg | 9 mi |
| 12:00 am | | 28 °F | Light snow. Mostly cloudy. | 15 mph | ↑ | 74% | 29.80 "Hg | 9 mi |
| 11:33 pm Fri, Dec 5 | | 28 °F | Light snow. Mostly cloudy. | 15 mph | ↑ | 74% | 29.80 "Hg | 9 mi |
| 11:18 pm | | 28 °F | Mostly cloudy. | 13 mph | ↑ | 74% | 29.80 "Hg | 9 mi |
| 11:03 pm | | 28 °F | Light snow. Overcast. | 18 mph | ↑ | 69% | 29.80 "Hg | 9 mi |
| 10:00 pm | | 28 °F | Mostly cloudy. | 15 mph | ↑ | 69% | 29.83 "Hg | 9 mi |
| 9:00 pm | | 28 °F | Overcast. | 15 mph | ↑ | 64% | 29.85 "Hg | 9 mi |
| 8:00 pm | | 27 °F | Overcast. | 15 mph | ↑ | 74% | 29.87 "Hg | 9 mi |
| 7:00 pm | | 27 °F | Mostly cloudy. | 13 mph | ↑ | 74% | 29.88 "Hg | 9 mi |
| 6:00 pm | | 27 °F | Overcast. | 14 mph | ↑ | 74% | 29.89 "Hg | 9 mi |
| 5:00 pm | | 27 °F | Overcast. | 15 mph | ↑ | 69% | 29.90 "Hg | 9 mi |
| 4:00 pm | | 27 °F | Overcast. | 13 mph | ↑ | 69% | 29.91 "Hg | 9 mi |
| 3:00 pm | | 28 °F | Overcast. | 15 mph | ↑ | 59% | 29.92 "Hg | 9 mi |
| 2:00 pm |  | 28 °F | Passing clouds. | 16 mph | ↑ | 55% | 29.95 "Hg | 9 mi |
| 1:00 pm |  | 27 °F | Sunny. | 16 mph | ↑ | 59% | 29.97 "Hg | 9 mi |
| 12:00 pm | | 25 °F | Scattered clouds. | 12 mph | ↑ | 69% | 30.01 "Hg | 9 mi |
| 11:00 am | | 23 °F | Sunny. | 15 mph | ↑ | 68% | 30.03 "Hg | 9 mi |
| 10:00 am | | 18 °F | Sunny. | 8 mph | ↑ | 79% | 30.06 "Hg | 9 mi |
| 9:00 am |  | 14 °F | Partly sunny. | 6 mph | ↑ | 73% | 30.09 "Hg | 9 mi |
| Weather by CustomWeather, © 2025 | ||||||||