Currently: 79 °F. Passing clouds. (Weather station: Ontario International Airport, USA). See more current weatherPast Weather in Ontario — Graph
°F
Time
Wind
(mph)
(mph)
Temp
(°F)
(°F)
61
65
69
73
77
81
85
89
93
97
Sun, Sep 7
Lo:75
6 pm
Hi:84
9
Mon, Sep 8
Lo:72
12 am
Hi:75
0
Lo:70
6 am
Hi:88
2
Lo:86
12 pm
Hi:93
12
Lo:70
6 pm
Hi:82
8
Tue, Sep 9
Lo:64
12 am
Hi:68
0
Lo:63
6 am
Hi:79
4
Lo:81
12 pm
Hi:84
11
Lo:66
6 pm
Hi:75
9
Wed, Sep 10
Lo:64
12 am
Hi:66
6
Lo:66
6 am
Hi:75
4
Lo:75
12 pm
Hi:81
11
Lo:66
6 pm
Hi:73
9
Thu, Sep 11
Lo:63
12 am
Hi:64
2
Lo:64
6 am
Hi:73
4
Lo:75
12 pm
Hi:81
10
Lo:64
6 pm
Hi:75
8
Fri, Sep 12
Lo:63
12 am
Hi:64
2
Lo:63
6 am
Hi:70
4
Lo:70
12 pm
Hi:81
9
Lo:66
6 pm
Hi:73
9
Sat, Sep 13
Lo:63
12 am
Hi:64
4
Lo:63
6 am
Hi:72
3
Lo:75
12 pm
Hi:82
12
Lo:64
6 pm
Hi:72
7
Sun, Sep 14
Lo:63
12 am
Hi:64
2
Lo:64
6 am
Hi:72
2
Lo:79
12 pm
Hi:88
10
Lo:66
6 pm
Hi:79
7
Mon, Sep 15
Lo:64
12 am
Hi:64
1
Lo:63
6 am
Hi:84
2
Lo:90
12 pm
Hi:95
10
Lo:75
6 pm
Hi:86
6
Tue, Sep 16
Lo:70
12 am
Hi:73
1
Lo:72
6 am
Hi:93
2
Lo:93
12 pm
Hi:99
11
Lo:79
6 pm
Hi:90
7
Wed, Sep 17
Lo:73
12 am
Hi:79
2
Lo:75
6 am
Hi:93
2
Lo:79
12 pm
Hi:97
13
Lo:70
6 pm
Hi:73
7
Thu, Sep 18
Lo:72
12 am
Hi:75
3
Lo:72
6 am
Hi:84
4
Lo:79
12 pm
Hi:84
9
Lo:73
6 pm
Hi:79
8
Fri, Sep 19
Lo:72
12 am
Hi:73
3
Lo:72
6 am
Hi:82
6
Lo:82
12 pm
Hi:88
8
Lo:72
6 pm
Hi:81
8
Sat, Sep 20
Lo:66
12 am
Hi:72
2
Lo:66
6 am
Hi:82
0
Lo:86
12 pm
Hi:91
11
Lo:72
6 pm
Hi:81
7
Sun, Sep 21
Lo:66
12 am
Hi:70
1
Lo:66
6 am
Hi:79
4
Lo:79
12 pm
Hi:81
6
Lo:72
6 pm
Hi:81
5
Mon, Sep 22
Lo:70
12 am
Hi:70
0
Lo:70
6 am
Hi:82
1
Lo:84
12 pm
Hi:91
6
Lo:79
6 pm
Hi:81
12
Sunday, September 7, 2025, 6:00 pm — 12:00 am
84 / 75 °F
Clear.
Humidity: 27%
Barometer: 29.98 "Hg
WSW
Wind: 8.7 mph
Ontario Temperature Yesterday
Maximum temperature yesterday: 81 °F (at 4:53 pm)
Minimum temperature yesterday: 66 °F (at 5:53 am)
Average temperature yesterday: 74 °F
High & Low Weather Summary for the Past Weeks
| Temperature | Humidity | Pressure | |
|---|---|---|---|
| High | 98 °F (Sep 16, 1:53 pm) | 93% (Sep 15, 7:53 am) | 30.02 "Hg (Sep 15, 7:53 am) |
| Low | 62 °F (Sep 12, 4:53 am) | 14% (Sep 8, 1:53 pm) | 29.73 "Hg (Sep 22, 3:53 pm) |
| Average | 75 °F | 60% | 29.87 "Hg |
| * Reported Sep 7 7:53 pm — Sep 22 7:53 pm, Ontario. 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
Ontario Weather History for the Previous 24 Hours
Scroll right to see more
| Conditions | Comfort | |||||||
|---|---|---|---|---|---|---|---|---|
| Time | Temp | Weather | Wind | Humidity | Barometer | Visibility | ||
| 7:53 pm Mon, Sep 22 | | 79 °F | Passing clouds. | 10 mph | ↑ | 50% | 29.76 "Hg | 10 mi |
| 6:53 pm | | 81 °F | Passing clouds. | 13 mph | ↑ | 49% | 29.74 "Hg | 10 mi |
| 5:53 pm |  | 85 °F | Passing clouds. | 12 mph | ↑ | 42% | 29.73 "Hg | 10 mi |
| 4:53 pm | | 89 °F | Scattered clouds. | 10 mph | ↑ | 35% | 29.73 "Hg | 10 mi |
| 3:53 pm | | 91 °F | Scattered clouds. | 8 mph | ↑ | 31% | 29.73 "Hg | 10 mi |
| 2:53 pm | | 91 °F | Scattered clouds. | 5 mph | ↑ | 26% | 29.74 "Hg | 10 mi |
| 1:53 pm |  | 88 °F | Partly sunny. | 3 mph | ↑ | 33% | 29.78 "Hg | 10 mi |
| 12:53 pm | | 85 °F | Scattered clouds. | No wind | ↑ | 37% | 29.81 "Hg | 10 mi |
| 11:53 am | | 82 °F | Scattered clouds. | No wind | ↑ | 44% | 29.83 "Hg | 9 mi |
| 10:53 am | | 79 °F | Partly sunny. | No wind | ↑ | 52% | 29.85 "Hg | 9 mi |
| 9:53 am | | 77 °F | Partly sunny. | 3 mph | ↑ | 58% | 29.86 "Hg | 9 mi |
| 8:53 am | | 73 °F | Partly sunny. | No wind | ↑ | 69% | 29.86 "Hg | 9 mi |
| 7:53 am | | 70 °F | Partly sunny. | 3 mph | ↑ | 76% | 29.84 "Hg | 10 mi |
| 6:53 am | | 69 °F | Partly sunny. | No wind | ↑ | 76% | 29.84 "Hg | 10 mi |
| 5:53 am | | 70 °F | Passing clouds. | No wind | ↑ | 68% | 29.83 "Hg | 10 mi |
| 3:53 am | | 69 °F | Passing clouds. | No wind | ↑ | 79% | 29.81 "Hg | 10 mi |
| 2:53 am | | 69 °F | Passing clouds. | No wind | ↑ | 79% | 29.81 "Hg | 10 mi |
| 12:53 am | | 70 °F | Passing clouds. | No wind | ↑ | 76% | 29.83 "Hg | 10 mi |
| 11:53 pm Sun, Sep 21 | | 72 °F | Passing clouds. | No wind | ↑ | 71% | 29.83 "Hg | 10 mi |
| 10:53 pm | | 74 °F | Passing clouds. | 6 mph | ↑ | 67% | 29.84 "Hg | 10 mi |
| 9:53 pm | | 75 °F | Passing clouds. | 9 mph | ↑ | 64% | 29.83 "Hg | 10 mi |
| Weather by CustomWeather, © 2025 | ||||||||