Merriam, IL Weather Forecast
Local 7-day forecast
Widespread Frost then Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Merriam, IL in one place.
Widespread frost and patchy fog before 9am. Sunny. High near 61, with temperatures falling to around 57 in the afternoon. West southwest wind 1 to 8 mph.
Local Weather Overview
This forecast page for Merriam, IL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Nov 8, 2026 7:56 AM CST.
The active forecast window currently covers Nov 8 to Nov 14, 2026 for Merriam, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Nov 8 to Nov 14, 2026
- Latest sync
- Nov 8, 2026 7:56 AM CST
- Forecast office
- PAH
- Source
- NOAA / NWS
Daily Outlook
This Week in Merriam
Tuesday looks like the warmest upcoming period in Merriam at 68 degrees F.
Friday Night is the coolest period ahead with temperatures near 30 degrees F.
The strongest winds are forecast for Thursday at about 9 to 15 mph N.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Nov 8, 2026 7:56 AM CST
- Coverage
- 8 days
- Time zone
- America/Chicago
- Forecast office
- PAH
- Radar station
- KVWX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Areas of fog after 9pm. Mostly clear, with a low around 37. West wind 0 to 3 mph.
Patchy frost and patchy fog before 9am. Sunny. High near 64, with temperatures falling to around 59 in the afternoon. Southwest wind around 2 mph.
Clear, with a low around 40. Southwest wind around 2 mph.
Sunny, with a high near 68. West southwest wind 2 to 6 mph.
Mostly clear, with a low around 43. West northwest wind around 1 mph.
A chance of rain showers after noon. Partly sunny, with a high near 66. West wind 0 to 6 mph.
A chance of rain showers before midnight. Mostly cloudy, with a low around 41. North wind 3 to 10 mph.
Mostly sunny, with a high near 54. North wind 9 to 15 mph, with gusts as high as 21 mph.
Partly cloudy, with a low around 32. North northwest wind 5 to 12 mph.
Sunny, with a high near 50. North northwest wind 5 to 9 mph.
Mostly clear, with a low around 30. North northwest wind around 2 mph.
Sunny, with a high near 55. Northwest wind 0 to 6 mph.
Mostly clear, with a low around 34. West wind around 1 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Nov 8
|
Widespread Frost then Sunny
|
61°F |
1 to 8 mph
WSW
|
|
Tonight
Nov 8
|
Areas Of Fog
|
37°F |
0 to 3 mph
W
|
|
Monday
Nov 9
|
Patchy Frost then Sunny
|
64°F |
2 mph
SW
|
|
Monday Night
Nov 9
|
Clear
|
40°F |
2 mph
SW
|
|
Tuesday
Nov 10
|
Sunny
|
68°F |
2 to 6 mph
WSW
|
|
Tuesday Night
Nov 10
|
Mostly Clear
|
43°F |
1 mph
WNW
|
|
Veterans Day
Nov 11
|
Partly Sunny then Chance Rain Showers
|
66°F |
0 to 6 mph
W
|
|
Wednesday Night
Nov 11
|
Chance Rain Showers then Mostly Cloudy
|
41°F |
3 to 10 mph
N
|
|
Thursday
Nov 12
|
Mostly Sunny
|
54°F |
9 to 15 mph
N
|
|
Thursday Night
Nov 12
|
Partly Cloudy
|
32°F |
5 to 12 mph
NNW
|
|
Friday
Nov 13
|
Sunny
|
50°F |
5 to 9 mph
NNW
|
|
Friday Night
Nov 13
|
Mostly Clear
|
30°F |
2 mph
NNW
|
|
Saturday
Nov 14
|
Sunny
|
55°F |
0 to 6 mph
NW
|
|
Saturday Night
Nov 14
|
Mostly Clear
|
34°F |
1 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Merriam.