Currently: 66 °F. Passing clouds. (Weather station: Ontario International Airport, USA). See more current weatherPast Weather in Ontario — Graph
Ontario Temperature Yesterday
Maximum temperature yesterday: 98 °F (at 1:53 pm)
Minimum temperature yesterday: 67 °F (at 6:53 am)
Average temperature yesterday: 81 °F
High & Low Weather Summary for the Past Weeks
| Temperature | Humidity | Pressure | |
|---|---|---|---|
| High | 99 °F (Mar 19, 3:53 pm) | 93% (Mar 10, 7:18 am) | 30.24 "Hg (Mar 10, 7:18 am) |
| Low | 51 °F (Mar 9, 5:53 am) | 10% (Mar 7, 10:53 pm) | 29.74 "Hg (Mar 8, 4:53 pm) |
| Average | 72 °F | 38% | 29.96 "Hg |
| * Reported Mar 6 5:53 am — Mar 21 6:53 am, Ontario. 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
Ontario Weather History for the Previous 24 Hours
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| Conditions | Comfort | |||||||
|---|---|---|---|---|---|---|---|---|
| Time | Temp | Weather | Wind | Humidity | Barometer | Visibility | ||
| 6:53 am Sat, Mar 21 | | 65 °F | Passing clouds. | No wind | ↑ | 59% | 29.89 "Hg | 10 mi |
| 5:53 am |  | 66 °F | Clear. | No wind | ↑ | 56% | 29.87 "Hg | 10 mi |
| 4:53 am | | 66 °F | Clear. | No wind | ↑ | 59% | 29.86 "Hg | 10 mi |
| 3:53 am | | 68 °F | Clear. | 3 mph | ↑ | 55% | 29.87 "Hg | 10 mi |
| 2:53 am | | 68 °F | Clear. | No wind | ↑ | 57% | 29.88 "Hg | 10 mi |
| 1:53 am | | 70 °F | Clear. | No wind | ↑ | 51% | 29.89 "Hg | 10 mi |
| 12:53 am | | 71 °F | Clear. | No wind | ↑ | 51% | 29.89 "Hg | 10 mi |
| 11:53 pm Fri, Mar 20 | | 71 °F | Clear. | No wind | ↑ | 51% | 29.90 "Hg | 10 mi |
| 10:53 pm | | 74 °F | Clear. | 5 mph | ↑ | 43% | 29.90 "Hg | 10 mi |
| 9:53 pm | | 76 °F | Clear. | 7 mph | ↑ | 37% | 29.89 "Hg | 10 mi |
| 8:53 pm | | 81 °F | Clear. | 7 mph | ↑ | 30% | 29.87 "Hg | 10 mi |
| 7:53 pm | | 84 °F | Clear. | 12 mph | ↑ | 31% | 29.85 "Hg | 10 mi |
| 6:53 pm |  | 88 °F | Sunny. | 9 mph | ↑ | 30% | 29.85 "Hg | 10 mi |
| 5:53 pm | | 92 °F | Sunny. | 12 mph | ↑ | 26% | 29.84 "Hg | 10 mi |
| 4:53 pm | | 96 °F | Sunny. | 12 mph | ↑ | 23% | 29.84 "Hg | 10 mi |
| 3:53 pm | | 98 °F | Sunny. | 12 mph | ↑ | 18% | 29.85 "Hg | 10 mi |
| 2:53 pm | | 98 °F | Sunny. | 12 mph | ↑ | 21% | 29.86 "Hg | 10 mi |
| 1:53 pm | | 98 °F | Sunny. | 8 mph | ↑ | 12% | 29.88 "Hg | 10 mi |
| 12:53 pm | | 94 °F | Sunny. | 5 mph | ↑ | 19% | 29.91 "Hg | 10 mi |
| 11:53 am | | 91 °F | Sunny. | No wind | ↑ | 20% | 29.93 "Hg | 10 mi |
| 10:53 am | | 86 °F | Sunny. | No wind | ↑ | 25% | 29.94 "Hg | 10 mi |
| 9:53 am | | 83 °F | Sunny. | 3 mph | ↑ | 30% | 29.95 "Hg | 10 mi |
| 8:53 am | | 78 °F | Sunny. | 5 mph | ↑ | 33% | 29.95 "Hg | 10 mi |
| Weather by CustomWeather, © 2026 | ||||||||