Weather forecast for 10 daysRosemont, CA
Weather forecast for the weekend
Sunday Oct 18, 2026
- 86°F
- 52°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 10mphSSW 195°
- Humidity: 40%
- UV index: 5
- Sunrise: 7:17 am PDT
- Sunset: 6:23 pm PDT
- details ▼
Today, in Rosemont, a sun-drenched sky is anticipated.
A daytime temperature reaching up to a blazing 86°F will sharply contrast with a nighttime low of a fresh 51.8°F.
The maximum heat index, which measures the combined effect of heat and moisture, is evaluated at a tropical 86°F. Take into consideration that the heat index values are calculated for shade and light wind conditions.
Today, the weather pattern will resemble September more than October, with a forecast high of 86°F.
Sunrise will be at 7:17 am and sunset at 6:23 pm; the daylight will last for 11h and 5min.
A daytime temperature reaching up to a blazing 86°F will sharply contrast with a nighttime low of a fresh 51.8°F.
The maximum heat index, which measures the combined effect of heat and moisture, is evaluated at a tropical 86°F. Take into consideration that the heat index values are calculated for shade and light wind conditions.
Today, the weather pattern will resemble September more than October, with a forecast high of 86°F.
Sunrise will be at 7:17 am and sunset at 6:23 pm; the daylight will last for 11h and 5min.
10-day overview
Daily temperatures
Warmest day: today 86°C.
Coldest day: Wednesday 66°C.
Coldest day: Wednesday 66°C.
Chance of precipitation
Highest chance: Wednesday 34%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 86°F
- 52°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 10mphSSW 195°
- Humidity: 40%
- UV index: 5
- Sunrise: 7:17 am PDT
- Sunset: 6:23 pm PDT
- details ▼
- Monday
- Oct 19, 2026
- 72°F
- 48°F
Partly Cloudy
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 9mphSSW 200°
- Humidity: 52%
- UV index: 5
- Sunrise: 7:18 am PDT
- Sunset: 6:21 pm PDT
- details ▼
- Tuesday
- Oct 20, 2026
- 72°F
- 55°F
Cloudy
- Precip. probability: 7%
- Precipitation: 0.04"
- Wind: 4mphW 278°
- Humidity: 57%
- UV index: 3
- Sunrise: 7:19 am PDT
- Sunset: 6:20 pm PDT
- details ▼
- Wednesday
- Oct 21, 2026
- 66°F
- 55°F
AM Showers
- Precip. probability: 34%
- Precipitation: 0.08"
- Wind: 5mphWSW 252°
- Humidity: 64%
- UV index: 2
- Sunrise: 7:20 am PDT
- Sunset: 6:19 pm PDT
- details ▼
- Thursday
- Oct 22, 2026
- 68°F
- 52°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 6mphSSW 208°
- Humidity: 76%
- UV index: 3
- Sunrise: 7:21 am PDT
- Sunset: 6:17 pm PDT
- details ▼
- Friday
- Oct 23, 2026
- 72°F
- 46°F
Partly Cloudy
- Precip. probability: 16%
- Precipitation: 0"
- Wind: 7mphNW 314°
- Humidity: 67%
- UV index: 4
- Sunrise: 7:22 am PDT
- Sunset: 6:16 pm PDT
- details ▼
- Saturday
- Oct 24, 2026
- 73°F
- 46°F
Mostly Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 6mphSSW 211°
- Humidity: 55%
- UV index: 4
- Sunrise: 7:24 am PDT
- Sunset: 6:15 pm PDT
- details ▼
- Sunday
- Oct 25, 2026
- 72°F
- 46°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 6mphWSW 248°
- Humidity: 55%
- UV index: 4
- Sunrise: 7:25 am PDT
- Sunset: 6:13 pm PDT
- details ▼
- Monday
- Oct 26, 2026
- 72°F
- 46°F
Mostly Sunny
- Precip. probability: 17%
- Precipitation: 0"
- Wind: 6mphSW 229°
- Humidity: 56%
- UV index: 4
- Sunrise: 7:26 am PDT
- Sunset: 6:12 pm PDT
- details ▼
- Tuesday
- Oct 27, 2026
- 72°F
- 46°F
Partly Cloudy
- Precip. probability: 10%
- Precipitation: 0"
- Wind: 6mphSW 227°
- Humidity: 55%
- UV index: 4
- Sunrise: 7:27 am PDT
- Sunset: 6:11 pm PDT
- details ▼
gloomy, mostly clear and rain-soaked weather is predicted.
With a probability of 34%, rainfall is expected only on Wednesday. Expected precipitation will be minimal at 0.08".
Temperature variation will be noticeable throughout the forecast window. Forecast highs will fluctuate between 66.2°F and 86°F, while the low temperature range extends from 46.4°F to 55.4°F.
With a high of 86°F, today is the hottest day; with the highest temperature of 66.2°F, Wednesday will be the coldest day.
With a probability of 34%, rainfall is expected only on Wednesday. Expected precipitation will be minimal at 0.08".
Temperature variation will be noticeable throughout the forecast window. Forecast highs will fluctuate between 66.2°F and 86°F, while the low temperature range extends from 46.4°F to 55.4°F.
With a high of 86°F, today is the hottest day; with the highest temperature of 66.2°F, Wednesday will be the coldest day.
Updated: Oct 18, 2026 @ 14:03:42 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 Rosemont, the forecast calls for abundant sunshine.
Today, the highest temperature will be 86°F, while the lowest temperature will be 51.8°F. The maximum heat index, which integrates air moisture with ambient temperature, is computed to be 86°F.
The highest temperature today will be notably higher than the average maximum of 76.1°F in October. Today, the lowest temperature will be in line with the average low temperature.
The highest temperature today will be notably higher than the average maximum of 76.1°F in October. Today, the lowest temperature will be in line with the average low temperature.
On Sunday, in Rosemont, sunrise will be at 7:17 am and sunset at 6:23 pm (PDT).
In Rosemont, today, there will be 11h and 5min of daylight.
