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Marseilles, IL 61341 Weather
Current conditions
Forecast for this hour (no station report in the last two hours)
Forecast
10-day-
Tonight
Patchy fog after 3am. Mostly clear. Low around 45, with temperatures rising to around 47 overnight. Wind around 0 mph.
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Thursday
Patchy fog before 9am. Sunny. High near 75, with temperatures falling to around 73 in the afternoon. North northeast wind around 0 mph.
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Thursday Night
Mostly clear. Low around 46, with temperatures rising to around 48 overnight. East wind 0 to 5 mph.
National Weather Service forecast updated 4 hrs ago.
Hourly
Hourly forecast- Now60°
- 9 PM58°
- 10 PM55°
- 11 PM53°
- Thu12 AM50°
- 1 AM50°
- 2 AM49°
- 3 AM49°
- 4 AM48°
- 5 AM47°
- 6 AM47°
- 7 AM47°
- 8 AM49°
- 9 AM53°
- 10 AM61°
- 11 AM66°
- 12 PM69°
- 1 PM72°
- 2 PM74°
- 3 PM74°
- 4 PM75°
- 5 PM73°
- 6 PM70°
- 7 PM66°
10-day forecast
Details- TonightOct 21Mostly Clear then Patchy Fog45°
- ThuOct 22Patchy Fog then Sunny46°75°
- FriOct 23Sunny49°74°
- SatOct 24Mostly Sunny50°74°
- SunOct 25Partly Sunny51°76°
- MonOct 26Partly Sunny48°72°
- TueOct 27Slight Chance Rain Showers15%46°66°
- WedOct 28Mostly Sunny12%67°
- ThuOct 29Partly cloudy38°60°
- FriOct 30Cloudy43°59°
Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.
Radar
Full mapWeather news near Marseilles
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Air quality
Air quality is satisfactory, and air pollution poses little or no risk.
Forecast
- WedModerate
- ThuModerate
- FriModerate
Joliet and Will County, IL reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Almanac
MonthlyOttawa 4sw, records since 1890. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).
Nearby
- Aurora 57 km
- Joliet 55 km
- Plainfield 53 km
- Oswego 49 km
- Crest Hill 56 km
- Montgomery 53 km
- Yorkville 40 km
- Ottawa 12 km
- Shorewood 46 km
- Morris 23 km
- Streator 26 km
- Channahon 40 km
Forecasters' discussion
From the National Weather Service office in LOT, issued 6 hrs ago
Key Messages
- The dry and unseasonably mild weather will continue through the upcoming weekend.
Discussion
Issued at 136 PM CDT Wed Oct 21 2026
An anomalously strong mid-level ridge over the central CONUS will anchor omega blocking across much of North America over the next several days. Meanwhile, an elongated surface ridge extending from the Lower Mississippi River Valley to the Canadian Maritimes is in the processes of congealing with another expansive high pressure shifting toward the Upper Great Lakes. As a result, quiet weather with unseasonably warm conditions will continue through the upcoming weekend. As was observed the past few mornings, generally clear skies and light/calm winds should promote shallow fog across primarily interior northern Illinois late tonight through sunrise Thursday.
The blocking pattern will slowly break down early next week as the ridge flattens and a southwestern upper-level low begins to meander toward the central CONUS. A series of smaller troughs on the periphery of a developing longwave trough across the north Pacific and western Canada will eventually pick up the southwestern low. Consensus guidance suggests that the influence of the low on our area could occur as early as Monday night, but more likely Tuesday and Wednesday. Cooler and more seasonable conditions would accompany this system.
Kluber
Aviation
Issued at 1217 PM CDT Wed Oct 21 2026
Expect generally VFR conditions with a few mid-level clouds through the period as high pressure drifts over the area. However, as has been observed during the past few mornings, MIFG/BCFG is likely at RFD/DPA and VFR BR is possible at ORD late tonight through sunrise Thursday.
Light SW winds are expected this afternoon, though a weak lake breeze may wash out and turn winds SE 5 knots or less over ORD and especially MDW toward sunset. Winds will become calm or light and VRB tonight into Thursday morning, with a lake- enhanced NE wind shift likely by Thursday afternoon.
Kluber
Lot Watches
IL...None. IN...None. LM...None.
Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Conservative index and reflects what the press published. Terms of use.