Live Weather & Forecast

Weather in Rosemont

California, United States · Real-time conditions & 3-day outlook

Flag of United States
Light rain
18°C
Feels like 18°C
64°F / Feels 64°F
Light rain
Rosemont, California
🌙 Nighttime
Updated: 2026-04-12 22:30
💧
Humidity
81%
💨
Wind
22.7 km/h SSW
🌬️
Wind Gust
33.4 km/h
🌡️
Pressure
1010 mb
👁️
Visibility
11 km
☀️
UV Index
0 (Low)
🌧️
Precipitation
1.15 mm
☁️
Cloud Cover
100%
💦
Dew Point
15.1°C
🌐
Wind Degree
206°

Air Quality Index

US EPA: Good UK DEFRA: Low (1)
CO
150.9 μg/m³
NO₂
5.4 μg/m³
O₃
93 μg/m³
SO₂
2.9 μg/m³
PM 2.5
6.1 μg/m³
PM 10
6.2 μg/m³

Weather Alerts 1

Met · Severe · Immediate
Flood Warning issued April 12 at 10:46AM CDT until April 14 at 7:00PM CDT by NWS Chicago IL

...The Flood Warning continues for the following rivers in Illinois... Fox River at Algonquin Lock & Dam tailwater affecting Kane, McHenry and Lake IL Counties. For the Fox River (Illinois)...including Algonquin Lock & Dam tailwater...Minor flooding is occurring. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Fox River from Johnsburg downstream to Red Gate Road...

A Flood Warning means water levels above flood stage are imminent or may already be occurring. Persons along rivers and streams in the warned area should take immediate precautions to protect life and property. These forecasts are based on observed precipitation as well as forecast precipitation...

Effective: 2026-04-12T10:46:00-05:00  ·  Expires: 2026-04-13T05:00:00-05:00

Today's Hourly Forecast

24-hour breakdown for Rosemont, California

12 AM
Clear
11°
Clear
💧 61% 💨 12.6 km/h
1 AM
Clear
11°
Clear
💧 61% 💨 10.1 km/h
2 AM
Clear
11°
Clear
💧 62% 💨 11.9 km/h
3 AM
Clear
11°
Clear
💧 64% 💨 13.3 km/h
4 AM
Clear
12°
Clear
💧 68% 💨 14.4 km/h
5 AM
Clear
12°
Clear
💧 76% 💨 15.5 km/h
6 AM
Clear
13°
Clear
💧 81% 💨 16.9 km/h
7 AM
Sunny
15°
Sunny
💧 81% 💨 18.7 km/h
8 AM
Sunny
17°
Sunny
💧 74% 💨 19.8 km/h
9 AM
Sunny
19°
Sunny
💧 69% 💨 20.9 km/h
10 AM
Sunny
22°
Sunny
💧 64% 💨 22.7 km/h
11 AM
Sunny
25°
Sunny
💧 57% 💨 24.1 km/h
12 PM
Sunny
26°
Sunny
💧 52% 💨 25.9 km/h
1 PM
Sunny
27°
Sunny
💧 49% 💨 27 km/h
2 PM
Partly Cloudy
28°
Partly Cloudy
💧 43% 💨 27.4 km/h
3 PM
Sunny
28°
Sunny
💧 43% 💨 26.6 km/h
4 PM
Sunny
28°
Sunny
💧 41% 💨 26.6 km/h
5 PM
Sunny
28°
Sunny
💧 44% 💨 27 km/h
6 PM
Sunny
27°
Sunny
💧 45% 💨 24.1 km/h
7 PM
Sunny
25°
Sunny
💧 44% 💨 29.9 km/h
8 PM
Clear
22°
Clear
💧 52% 💨 24.8 km/h
9 PM
Moderate rain at times
19°
Moderate rain at times
💧 77% 💨 23 km/h 🌧️ 100%
10 PM
Light rain
18°
Light rain
💧 81% 💨 22.7 km/h 🌧️ 100%
11 PM
Patchy rain nearby
17°
Patchy rain nearby
💧 84% 💨 23.8 km/h 🌧️ 100%

3-Day Forecast

Daily overview for Rosemont, California

Today
Patchy rain nearby
Patchy rain nearby
29° / 11°
🌧️ 82% chance of rain
💧 Avg. humidity: 62%
💨 Max wind: 29.9 km/h
🌧️ Total precip: 2.11 mm
☀️ UV Index: 1.5
🌅 Sunrise: 06:16 AM
🌇 Sunset: 07:30 PM
🌙 Waning Crescent
🌑 Moon: 33% lit
Mon, Apr 13
Patchy rain nearby
Patchy rain nearby
22° / 17°
🌧️ 87% chance of rain
💧 Avg. humidity: 90%
💨 Max wind: 25.6 km/h
🌧️ Total precip: 1.11 mm
☀️ UV Index: 0.9
🌅 Sunrise: 06:14 AM
🌇 Sunset: 07:31 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Patchy rain nearby
Patchy rain nearby
25° / 19°
🌧️ 71% chance of rain
💧 Avg. humidity: 87%
💨 Max wind: 24.5 km/h
🌧️ Total precip: 0.84 mm
☀️ UV Index: 1.6
🌅 Sunrise: 06:12 AM
🌇 Sunset: 07:32 PM
🌙 Waning Crescent
🌑 Moon: 15% lit

Best Time to Visit Rosemont

Plan your trip to Rosemont, United States around the most favorable weather conditions.

Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
← Back to Rosemont 🗓 View Holidays 2026

Frequently Asked Questions

What is the current weather in Rosemont?
Current conditions in Rosemont: Light rain, temperature 18°C, humidity 81%.
What is the best time to visit Rosemont?
The best time to visit Rosemont is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Rosemont?
Rosemont is located at approximately 42° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Rosemont?
The wettest period in Rosemont is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Rosemont?
For visits to Rosemont during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Rosemont in?
Rosemont is located in United States, in the state of California.
What are the public holidays in Rosemont in 2026?
View the 2026 public holidays for Rosemont on our Holidays page.
What are the GPS coordinates used for the weather forecast in Rosemont?
The weather forecast for Rosemont uses coordinates 41.9941, -87.8757.