Past Weather in Sarnia — Graph
Sarnia Temperature Yesterday
Maximum temperature yesterday: 39 °F (at 3:00 pm)
Minimum temperature yesterday: 19 °F (at 3:00 am)
Average temperature yesterday: 30 °F
High & Low Weather Summary for the Past Weeks
| Temperature | Humidity | Pressure | |
|---|---|---|---|
| High | 61 °F (Mar 15, 10:00 pm) | 100% (Mar 11, 1:31 am) | 30.47 "Hg (Mar 11, 1:31 am) |
| Low | 16 °F (Mar 17, 9:19 am) | 42% (Mar 17, 7:00 pm) | 29.11 "Hg (Mar 16, 7:00 am) |
| Average | 34 °F | 77% | 29.90 "Hg |
| * Reported Mar 10 5:00 am — Mar 25 5:00 am, Sarnia. Weather by CustomWeather, © 2026 | |||
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 | ||
| 5:00 am Wed, Mar 25 |
|
28 °F | Overcast. | 3 mph | ↑ | 86% | 30.28 "Hg | 9 mi |
| 4:00 am |
|
28 °F | Overcast. | 7 mph | ↑ | 86% | 30.28 "Hg | 9 mi |
| 3:00 am |
|
27 °F | Clear. | 3 mph | ↑ | 86% | 30.32 "Hg | 9 mi |
| 2:00 am |
|
30 °F | Overcast. | 2 mph | ↑ | 80% | 30.33 "Hg | 9 mi |
| 1:00 am |
|
30 °F | Passing clouds. | 6 mph | ↑ | 80% | 30.34 "Hg | 9 mi |
| 12:00 am |
|
30 °F | Passing clouds. | 5 mph | ↑ | 80% | 30.34 "Hg | 9 mi |
| 11:00 pm Tue, Mar 24 |
|
32 °F | Clear. | 6 mph | ↑ | 75% | 30.34 "Hg | 9 mi |
| 10:00 pm |
|
32 °F | Passing clouds. | 3 mph | ↑ | 75% | 30.34 "Hg | 9 mi |
| 9:00 pm |
|
36 °F | Overcast. | 3 mph | ↑ | 65% | 30.33 "Hg | 9 mi |
| 8:00 pm |
|
37 °F | Mostly cloudy. | 6 mph | ↑ | 65% | 30.32 "Hg | 9 mi |
| 7:00 pm |
|
39 °F | Overcast. | 8 mph | ↑ | 61% | 30.33 "Hg | 9 mi |
| 6:00 pm |
|
39 °F | Overcast. | 9 mph | ↑ | 56% | 30.34 "Hg | 9 mi |
| 5:00 pm |
|
39 °F | Overcast. | 8 mph | ↑ | 56% | 30.34 "Hg | 9 mi |
| 4:00 pm |
|
39 °F | Partly sunny. | 13 mph | ↑ | 56% | 30.35 "Hg | 9 mi |
| 3:00 pm |
|
39 °F | Scattered clouds. | 16 mph | ↑ | 56% | 30.37 "Hg | 9 mi |
| 2:00 pm |
|
37 °F | Overcast. | 10 mph | ↑ | 60% | 30.39 "Hg | 9 mi |
| 1:00 pm |
|
37 °F | Broken clouds. | 16 mph | ↑ | 60% | 30.41 "Hg | 9 mi |
| 12:00 pm |
|
36 °F | Mostly cloudy. | 14 mph | ↑ | 60% | 30.44 "Hg | 9 mi |
| 11:56 am |
|
36 °F | Mostly cloudy. | 12 mph | ↑ | 65% | 30.45 "Hg | 9 mi |
| 11:19 am |
|
34 °F | Mostly cloudy. | 12 mph | ↑ | 70% | 30.45 "Hg | 9 mi |
| 11:00 am |
|
34 °F | More clouds than sun. | 13 mph | ↑ | 70% | 30.44 "Hg | 9 mi |
| 10:00 am |
|
30 °F | Passing clouds. | 15 mph | ↑ | 69% | 30.43 "Hg | 9 mi |
| 9:00 am |
|
27 °F | Scattered clouds. | 9 mph | ↑ | 80% | 30.44 "Hg | 9 mi |
| 8:00 am |
|
21 °F | Sunny. | 6 mph | ↑ | 86% | 30.45 "Hg | 9 mi |
| 7:00 am |
|
21 °F | Clear. | 6 mph | ↑ | 86% | 30.46 "Hg | 9 mi |
| 6:00 am |
|
19 °F | Clear. | 5 mph | ↑ | 93% | 30.46 "Hg | 9 mi |
| Weather by CustomWeather, © 2026 | ||||||||