Weather forecast for 10 daysOntario, OR
Weather forecast for the weekend
Sunday Oct 18, 2026
- 72°F
- 32°F
Partly Cloudy
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 3mphNW 314°
- Humidity: 51%
- UV index: 3
- Sunrise: 8:06 am MDT
- Sunset: 6:59 pm MDT
- details ▼
On Sunday, October 18, a mix of clouds and blue sky is expected.
Day and night temperatures will sharply contrast, oscillating between an agreeable 71.6°F and a cold 32°F.
Tomorrow's temperature peak is set to be a few degrees higher than the typical October high of 62.6°F.
Sunrise will be at 8:06 am and sunset at 6:59 pm; tomorrow's daylight will last for 10h and 53min.
Day and night temperatures will sharply contrast, oscillating between an agreeable 71.6°F and a cold 32°F.
Tomorrow's temperature peak is set to be a few degrees higher than the typical October high of 62.6°F.
Sunrise will be at 8:06 am and sunset at 6:59 pm; tomorrow's daylight will last for 10h and 53min.
10-day overview
Daily temperatures
Warmest day: Monday 73°C.
Coldest day: Saturday 24.10. 55°C.
Coldest day: Saturday 24.10. 55°C.
Chance of precipitation
Highest chance: Thursday 48%.
Long-term weather forecast
- Saturday
- Oct 17, 2026
- min.
- 34°F
Partly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 6mphNW 307°
- Humidity: 57%
- UV index: 0
- Sunrise: 8:05 am MDT
- Sunset: 7:00 pm MDT
- details ▼
- Sunday
- Oct 18, 2026
- 72°F
- 32°F
Partly Cloudy
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 3mphNW 314°
- Humidity: 51%
- UV index: 3
- Sunrise: 8:06 am MDT
- Sunset: 6:59 pm MDT
- details ▼
- Monday
- Oct 19, 2026
- 73°F
- 37°F
Partly Cloudy
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 6mphW 276°
- Humidity: 47%
- UV index: 3
- Sunrise: 8:07 am MDT
- Sunset: 6:57 pm MDT
- details ▼
- Tuesday
- Oct 20, 2026
- 72°F
- 39°F
AM Clouds / PM Sun
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 4mphNW 317°
- Humidity: 47%
- UV index: 3
- Sunrise: 8:09 am MDT
- Sunset: 6:55 pm MDT
- details ▼
- Wednesday
- Oct 21, 2026
- 72°F
- 45°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 5mphNW 322°
- Humidity: 61%
- UV index: 3
- Sunrise: 8:10 am MDT
- Sunset: 6:54 pm MDT
- details ▼
- Thursday
- Oct 22, 2026
- 66°F
- 46°F
AM Showers
- Precip. probability: 48%
- Precipitation: 0.2"
- Wind: 6mphWNW 302°
- Humidity: 71%
- UV index: 2
- Sunrise: 8:11 am MDT
- Sunset: 6:52 pm MDT
- details ▼
- Friday
- Oct 23, 2026
- 57°F
- 32°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 12mphNW 308°
- Humidity: 62%
- UV index: 3
- Sunrise: 8:13 am MDT
- Sunset: 6:51 pm MDT
- details ▼
- Saturday
- Oct 24, 2026
- 55°F
- 36°F
Partly Cloudy
- Precip. probability: 11%
- Precipitation: 0"
- Wind: 6mphNW 316°
- Humidity: 64%
- UV index: 3
- Sunrise: 8:14 am MDT
- Sunset: 6:49 pm MDT
- details ▼
- Sunday
- Oct 25, 2026
- 57°F
- 36°F
Partly Cloudy
- Precip. probability: 10%
- Precipitation: 0"
- Wind: 6mphNW 308°
- Humidity: 69%
- UV index: 3
- Sunrise: 8:15 am MDT
- Sunset: 6:48 pm MDT
- details ▼
- Monday
- Oct 26, 2026
- 57°F
- 34°F
Mostly Sunny
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 4mphWNW 301°
- Humidity: 67%
- UV index: 3
- Sunrise: 8:16 am MDT
- Sunset: 6:46 pm MDT
- details ▼
Looking ahead, conditions suggest a period of primarily cloud-filled and occasionally rainy and bright weather is forecasted.
With a 48% probability, rainfall is expected only on Thursday. Predicted precipitation will be light at 0.2".
Temperature fluctuation will be noticeable over the next several days. Maximum temperatures are forecasted between 55.4°F and 73.4°F, while the variation in nighttime lows will be also notably wide, as temperatures overnight will fluctuate from 32°F up to 46.4°F.
With the highest temperature of 73.4°F, Monday will be the warmest day; the coldest day will be next Saturday, with a maximum of 55.4°F.
With a 48% probability, rainfall is expected only on Thursday. Predicted precipitation will be light at 0.2".
Temperature fluctuation will be noticeable over the next several days. Maximum temperatures are forecasted between 55.4°F and 73.4°F, while the variation in nighttime lows will be also notably wide, as temperatures overnight will fluctuate from 32°F up to 46.4°F.
With the highest temperature of 73.4°F, Monday will be the warmest day; the coldest day will be next Saturday, with a maximum of 55.4°F.
Updated: Oct 18, 2026 @ 01:57:26 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
On Sunday, in Ontario, moderate cloud cover will mix with sunshine throughout the day.
Tomorrow, the maximum temperature will be 71.6°F, while the minimum temperature will be 32°F.
The highest temperature will be relatively higher than the average maximum of 62.6°F in October. The lowest temperature will be uncommonly lower than the average low of 43.7°F.
The highest temperature will be relatively higher than the average maximum of 62.6°F in October. The lowest temperature will be uncommonly lower than the average low of 43.7°F.
On Sunday, in Ontario, sunrise will be at 8:06 am and sunset at 6:59 pm (MDT).
Tomorrow, the daylight will last for 10h and 53min.
