Past Weather in Sarnia — Graph
°F
Time
Wind
(mph)
(mph)
Temp
(°F)
(°F)
50
54
58
62
66
70
74
78
82
86
90
Tue, Jul 29
Lo:70
12 am
Hi:72
7
Lo:70
6 am
Hi:77
6
Lo:77
12 pm
Hi:82
8
Lo:70
6 pm
Hi:81
4
Wed, Jul 30
Lo:68
12 am
Hi:70
2
Lo:68
6 am
Hi:77
6
Lo:73
12 pm
Hi:77
14
Lo:64
6 pm
Hi:73
14
Thu, Jul 31
Lo:61
12 am
Hi:64
6
Lo:61
6 am
Hi:70
9
Lo:70
12 pm
Hi:73
14
Lo:63
6 pm
Hi:72
14
Fri, Aug 1
Lo:59
12 am
Hi:63
4
Lo:55
6 am
Hi:70
7
Lo:70
12 pm
Hi:73
15
Lo:63
6 pm
Hi:72
10
Sat, Aug 2
Lo:54
12 am
Hi:63
1
Lo:52
6 am
Hi:72
2
Lo:72
12 pm
Hi:75
7
Lo:61
6 pm
Hi:73
2
Sun, Aug 3
Lo:55
12 am
Hi:61
2
Lo:55
6 am
Hi:73
2
Lo:73
12 pm
Hi:79
6
Lo:59
6 pm
Hi:77
4
Mon, Aug 4
Lo:55
12 am
Hi:59
1
Lo:55
6 am
Hi:77
4
Lo:73
12 pm
Hi:79
8
Lo:66
6 pm
Hi:73
7
Tue, Aug 5
Lo:63
12 am
Hi:66
3
Lo:61
6 am
Hi:75
5
Lo:75
12 pm
Hi:77
10
Lo:66
6 pm
Hi:75
4
Wed, Aug 6
Lo:64
12 am
Hi:66
3
Lo:66
6 am
Hi:82
9
Lo:82
12 pm
Hi:84
12
Lo:66
6 pm
Hi:82
7
Thu, Aug 7
Lo:66
12 am
Hi:68
6
Lo:66
6 am
Hi:79
9
Lo:79
12 pm
Hi:84
10
Lo:68
6 pm
Hi:81
7
Fri, Aug 8
Lo:66
12 am
Hi:68
6
Lo:66
6 am
Hi:84
7
Lo:84
12 pm
Hi:88
12
Lo:72
6 pm
Hi:84
7
Sat, Aug 9
Lo:68
12 am
Hi:72
5
Lo:70
6 am
Hi:86
9
Lo:86
12 pm
Hi:88
13
Lo:73
6 pm
Hi:86
7
Sun, Aug 10
Lo:70
12 am
Hi:73
6
Lo:70
6 am
Hi:88
9
Lo:88
12 pm
Hi:90
12
Lo:73
6 pm
Hi:90
8
Mon, Aug 11
Lo:70
12 am
Hi:73
4
Lo:70
6 am
Hi:88
8
Lo:86
12 pm
Hi:91
14
Lo:73
6 pm
Hi:86
8
Tue, Aug 12
Lo:72
12 am
Hi:75
4
Lo:72
6 am
Hi:88
6
Lo:72
12 pm
Hi:90
11
Lo:70
6 pm
Hi:86
10
Wed, Aug 13
Lo:68
12 am
Hi:70
7
Tuesday, July 29, 2025, 12:00 am — 6:00 am
72 / 70 °F
Clear.
Humidity: 92%
Barometer: 30.06 "Hg
N
Wind: 7.457 mph
Sarnia Temperature Yesterday
Maximum temperature yesterday: 90 °F (at 1:00 pm)
Minimum temperature yesterday: 70 °F (at 10:32 pm)
Average temperature yesterday: 77 °F
High & Low Weather Summary for the Past Weeks
| Temperature | Humidity | Pressure | |
|---|---|---|---|
| High | 91 °F (Aug 11, 4:00 pm) | 100% (Jul 29, 11:00 pm) | 30.37 "Hg (Jul 29, 11:00 pm) |
| Low | 52 °F (Aug 2, 7:00 am) | 36% (Aug 2, 5:00 pm) | 29.86 "Hg (Aug 12, 8:00 pm) |
| Average | 72 °F | 77% | 30.15 "Hg |
| * Reported Jul 29 4:00 am — Aug 13 4:00 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 | ||
| 4:00 am Wed, Aug 13 |  | 68 °F | Clear. | 3 mph | ↑ | 100% | 29.86 "Hg | 9 mi |
| 3:00 am |  | 68 °F | Passing clouds. | 5 mph | ↑ | 100% | 29.87 "Hg | 9 mi |
| 2:00 am |  | 70 °F | Mostly cloudy. | 6 mph | ↑ | 94% | 29.88 "Hg | 9 mi |
| 1:05 am | | 70 °F | Passing clouds. | 10 mph | ↑ | 94% | 29.91 "Hg | 9 mi |
| 12:48 am |  | 70 °F | Light rain. Passing clouds. | 14 mph | ↑ | 94% | 29.91 "Hg | 9 mi |
| 12:35 am | | 70 °F | Passing clouds. | 9 mph | ↑ | 94% | 29.91 "Hg | 9 mi |
| 12:00 am | | 70 °F | Light rain. Mostly cloudy. | 5 mph | ↑ | 94% | 29.92 "Hg | 9 mi |
| 11:30 pm Tue, Aug 12 |  | 70 °F | Rain. Mostly cloudy. | 3 mph | ↑ | 94% | 29.90 "Hg | 9 mi |
| 11:00 pm |  | 70 °F | Thunderstorms. Overcast. | 13 mph | ↑ | 94% | 29.93 "Hg | 9 mi |
| 10:50 pm | | 70 °F | Thunderstorms. Mostly cloudy. | 14 mph | ↑ | 94% | 29.93 "Hg | 9 mi |
| 10:32 pm | | 70 °F | Thunderstorms. Fog. | 13 mph | ↑ | 94% | 29.93 "Hg | 6 mi |
| 10:04 pm | | 72 °F | Thunderstorms. Fog. | 17 mph | ↑ | 83% | 29.95 "Hg | 6 mi |
| 9:23 pm | | 73 °F | Thunderstorms. Mostly cloudy. | 14 mph | ↑ | 83% | 29.92 "Hg | 9 mi |
| 9:00 pm | | 79 °F | Thunderstorms. Overcast. | 18 mph | ↑ | 70% | 29.91 "Hg | 9 mi |
| 8:52 pm | | 81 °F | Thunderstorms. Overcast. | 15 mph | ↑ | 74% | 29.90 "Hg | 9 mi |
| 8:28 pm | | 81 °F | Thundershowers. Mostly cloudy. | 2 mph | ↑ | 79% | 29.87 "Hg | 9 mi |
| 8:00 pm |  | 81 °F | Passing clouds. | 6 mph | ↑ | 79% | 29.86 "Hg | 9 mi |
| 7:33 pm | | 81 °F | Thundershowers. Scattered clouds. | 6 mph | ↑ | 74% | 29.87 "Hg | 9 mi |
| 7:00 pm |  | 82 °F | Partly sunny. | 6 mph | ↑ | 70% | 29.88 "Hg | 9 mi |
| 6:00 pm |  | 86 °F | Sunny. | 6 mph | ↑ | 62% | 29.89 "Hg | 9 mi |
| 5:00 pm | | 84 °F | Sunny. | 5 mph | ↑ | 66% | 29.92 "Hg | 9 mi |
| 4:00 pm | | 79 °F | Scattered clouds. | 6 mph | ↑ | 79% | 29.94 "Hg | 9 mi |
| 3:30 pm | | 75 °F | Scattered clouds. | 8 mph | ↑ | 83% | 29.96 "Hg | 9 mi |
| 3:00 pm | | 72 °F | Thunderstorms. Overcast. | 8 mph | ↑ | 94% | 29.98 "Hg | 9 mi |
| 2:38 pm | | 72 °F | Thunderstorms. Fog. | 22 mph | ↑ | 94% | 29.97 "Hg | 5 mi |
| 2:19 pm | | 75 °F | Thunderstorms. Partly sunny. | 15 mph | ↑ | 89% | 29.97 "Hg | 7 mi |
| 2:09 pm | | 81 °F | Thunderstorms. Broken clouds. | 23 mph | ↑ | 66% | 29.96 "Hg | 6 mi |
| 1:56 pm | | 90 °F | Thunderstorms. Scattered clouds. | 8 mph | ↑ | 59% | 29.95 "Hg | 9 mi |
| 1:00 pm | | 90 °F | Passing clouds. | 9 mph | ↑ | 55% | 29.96 "Hg | 9 mi |
| 12:00 pm | | 88 °F | Passing clouds. | 13 mph | ↑ | 59% | 29.98 "Hg | 9 mi |
| 11:00 am | | 86 °F | Sunny. | 6 mph | ↑ | 66% | 29.99 "Hg | 9 mi |
| 10:00 am | | 82 °F | Sunny. | 7 mph | ↑ | 74% | 30.00 "Hg | 9 mi |
| 9:00 am | | 79 °F | Sunny. | 7 mph | ↑ | 84% | 30.01 "Hg | 9 mi |
| 8:00 am | | 75 °F | Sunny. | 6 mph | ↑ | 89% | 30.01 "Hg | 9 mi |
| 7:00 am | | 72 °F | Scattered clouds. | 3 mph | ↑ | 100% | 29.99 "Hg | 7 mi |
| 6:52 am |  | 72 °F | Fog. | 3 mph | ↑ | 94% | 30.00 "Hg | 6 mi |
| 6:40 am | | 72 °F | Fog. | 5 mph | ↑ | 94% | 30.00 "Hg | 5 mi |
| 6:00 am | | 73 °F | Clear. | 3 mph | ↑ | 94% | 30.00 "Hg | 9 mi |
| 5:00 am | | 73 °F | Fog. | 3 mph | ↑ | 94% | 30.01 "Hg | 6 mi |
| Weather by CustomWeather, © 2025 | ||||||||