Weather Tomorrow in Ontario, CA
Heat AdvisoryUntil Jul 10, 5:15 AM
Heat Advisory issued July 9 at 12:20PM PDT until July 10 at 8:00PM PDT by NWS San Diego CA
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Friday, July 10, 2026
Clear
Precip chance
0%
Wind
0-10 mph
Humidity
54%
Feels like
90–66°F
Data source: National Weather Service (NOAA) · Updated just now
Tomorrow by Hour
64°Temperature trend92°
| Time | Temp | Condition | Rain % | Wind | ||
|---|---|---|---|---|---|---|
| 7 AM☽ | 70°F | Clear | 0% | 5 mph W | ||
| 8 AM☽ | 69°F | Clear | 0% | 5 mph W | ||
| 9 AM☽ | 67°F | Clear | 0% | 5 mph W | ||
| 10 AM☽ | 66°F | Clear | 0% | 5 mph W | ||
| 11 AM☽ | 65°F | Clear | 0% | 0 mph | ||
| 12 PM☽ | 65°F | Mostly Clear | 0% | 0 mph | ||
| 1 PM | 64°F | Sunny | 0% | 0 mph | ||
| 2 PM | 66°F | Sunny | 0% | 0 mph | ||
| 3 PM | 69°F | Sunny | 0% | 0 mph | ||
| 4 PM | 72°F | Sunny | 0% | 0 mph | ||
| 5 PM | 79°F | Sunny | 0% | 0 mph | ||
| 6 PM | 83°F | Sunny | 0% | 5 mph SW | ||
| 7 PM | 87°F | Sunny | 0% | 5 mph SW | ||
| 8 PM | 90°F | Sunny | 0% | 5 mph W | ||
| 9 PM | 91°F | Sunny | 0% | 10 mph W | ||
| 10 PM | 92°F | Sunny | 0% | 10 mph W | ||
| 11 PM | 91°F | Sunny | 0% | 10 mph W | ||
| 12 AM | 90°F | Sunny | 0% | 10 mph W | ||
| 1 AM☽ | 88°F | Mostly Clear | 0% | 10 mph W | ||
| 2 AM☽ | 84°F | Mostly Clear | 0% | 10 mph W | ||
| 3 AM☽ | 80°F | Mostly Clear | 0% | 10 mph W | ||
| 4 AM☽ | 76°F | Mostly Clear | 0% | 5 mph W | ||
| 5 AM☽ | 73°F | Mostly Clear | 0% | 5 mph W | ||
| 6 AM☽ | 71°F | Mostly Clear | 0% | 5 mph W | ||
Precipitation Timeline
No significant precipitation expected tomorrow.
What to Wear Tomorrow
Hot — wear breathable, light clothing
Clothing
- • Light t-shirt or tank top
- • Shorts or light skirt
- • Hat for sun protection
Footwear
Sandals or breathable sneakers
Accessories
- • Sunglasses
- • Sunscreen
Conditions
High: 92°F
Low: 64°F
Wind: 0-10 mph
Rain: 0%
Big temperature swing (64°F to 92°F) — dress in removable layers.
Best Time to Be Outside Tomorrow
3 PM – 4 PM
Excellent conditions for outdoor activities (dry, comfortable temp, light wind, daylight)
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More for Ontario, CA
- Will it rain tomorrow in Ontario?
- What time will it rain tomorrow in Ontario?
- Weather tomorrow by hour in Ontario
- Heat index tomorrow by zip code near Ontario
- Dew point tomorrow by zip code near Ontario
- Wind chill tomorrow by zip code near Ontario
- Snow forecast tomorrow by zip code near Ontario
- What to wear tomorrow in Ontario
- Best time to be outside tomorrow in Ontario
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Frequently Asked Questions
What is the weather forecast for tomorrow in Ontario, CA?
Tomorrow in Ontario: High of 92°F, Low of 64°F. Clear with 0% chance of precipitation. Wind 0-10 mph.
Will it rain tomorrow in Ontario?
No significant precipitation expected tomorrow.
What should I wear tomorrow in Ontario?
With a high of 92°F and low of 64°F, check our "What to Wear" section above for specific clothing recommendations based on temperature, wind, and precipitation.
How accurate is this forecast?
Our forecasts come directly from the National Weather Service (NOAA), which provides some of the most accurate weather predictions available. Tomorrow forecasts are generally 80-90% accurate, with accuracy decreasing the further out you look. Data is refreshed every 30 minutes.