Rosemont, IL
Unincorporated community in St. Clair County, Illinois
Rosemont is a small unincorporated community in St. Clair County, Illinois. It is 0.3 miles NE of Washington Park, the nearest town. Its ZIP code is 62204.
Rosemont at a glance
- State
- Illinois
- County
- St. Clair County
- ZIP code
- 62204
- Nearest town
- Washington Park (0.3 mi)
- Time zone
- America/Chicago
- Coordinates
- 38.6269, -90.0972
Weather in Rosemont now
Loading the National Weather Service forecast…
Rosemont weather by the hour
Rosemont weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Rosemont.
This week in Rosemont
Sunrise, sunset and moon in Rosemont
What is the weather usually like in Rosemont?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 89°F average high
- Januarycoldest month · 24°F average low
- 40.8 inprecipitation per year · 1,037 mm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Rosemont: May and August to October, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station CAHOKIA ST LOUIS AP, IL US (USW00003960), adjusted for the elevation of Rosemont.
Rosemont weather month by month
Sunrise and sunset in Rosemont through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:15 AM | 5:04 PM | 9 h 49 min |
| February | 6:49 AM | 5:39 PM | 10 h 50 min |
| March | 7:09 AM | 7:08 PM | 11 h 59 min |
| April | 6:22 AM | 7:38 PM | 13 h 16 min |
| May | 5:46 AM | 8:06 PM | 14 h 20 min |
| June | 5:33 AM | 8:28 PM | 14 h 54 min |
| July | 5:46 AM | 8:25 PM | 14 h 38 min |
| August | 6:13 AM | 7:56 PM | 13 h 42 min |
| September | 6:40 AM | 7:10 PM | 12 h 29 min |
| October | 7:08 AM | 6:23 PM | 11 h 15 min |
| November | 6:41 AM | 4:48 PM | 10 h 7 min |
| December | 7:09 AM | 4:41 PM | 9 h 32 min |
Times for the 15th of each month, local time (America/Chicago).
What is the weather like in Rosemont?
Rosemont has a humid subtropical climate. The warmest month is July, with an average high of 89°F (32°C), and the coldest is January, with average lows of 24°F (-4°C).
It gets about 40.8 inches (1,037 mm) of precipitation a year. The wettest month is May and the driest is February.
The best time to visit Rosemont is May and August to October. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.
Webcams near Rosemont
The closest live webcam is Cabanne Place › North: World Chess Hall of Fame, 8.8 miles W of Rosemont.
Webcams: Windy.com. Distances in a straight line from Rosemont.
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Map of Rosemont, IL
Tap any road on the map to see it in Street View below. Map: © OpenStreetMap contributors.
Rosemont Street View
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Open in Google Maps ›Towns near Rosemont
Other communities near Rosemont
Questions about Rosemont
Where is Rosemont, IL?
Rosemont is an unincorporated community in St. Clair County, Illinois, 0.3 miles NE of Washington Park.
What county is Rosemont in?
Rosemont is in St. Clair County, Illinois.
What is the ZIP code of Rosemont, IL?
The ZIP code for Rosemont is 62204.
What is the nearest town to Rosemont?
Washington Park, 0.3 miles away.
Are there webcams near Rosemont?
Yes. The closest is Cabanne Place › North: World Chess Hall of Fame, 8.8 miles away.
What is the hottest month in Rosemont?
July, with an average high of 89°F (32°C).
What is the coldest month in Rosemont?
January, with an average low of 24°F (-4°C).
How much does it rain in Rosemont?
About 40.8 inches (1,037 mm) a year; the wettest month is May.
Does it snow in Rosemont?
Snow is very rare or not recorded at the nearest weather station.
When is the best time to visit Rosemont?
May and August to October, when temperatures are most pleasant and rainy days are fewer.
What climate does Rosemont have?
Humid subtropical (Köppen Cfa).
Last updated: