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As of 04:57 CDT

Weather in Merriam, IL

57°Current weather

Merriam, Friday, 16 October, 04:57

Overcast. Feels like 56°. High 68°, low 51°.

Pressure30.06 inHg
Wind8.1 mph NW
Humidity77%
Visibility6.2 mi
Dew point50°
Sat, 1760° / 45°0Clear
60 °Clear

Merriam, Saturday, 17 October

Clear. High 60°, low 45°.

Pressure30.53 inHg
Wind9.2 mph NE
Humidity52%
Visibility6.2 mi
Dew point38°
Sun, 1863° / 40°0Clear
63 °Clear

Merriam, Sunday, 18 October

Clear. High 63°, low 40°.

Pressure30.53 inHg
Wind6.8 mph SE
Humidity46%
Visibility6.2 mi
Dew point38°
Mon, 1967° / 42°0Clear
67 °Clear

Merriam, Monday, 19 October

Clear. High 67°, low 42°.

Pressure30.39 inHg
Wind2.8 mph E
Humidity47%
Visibility6.2 mi
Dew point42°
Tue, 2069° / 44°0Mostly clear
69 °Mostly clear

Merriam, Tuesday, 20 October

Mostly clear. High 69°, low 44°.

Pressure30.33 inHg
Wind6.7 mph NE
Humidity40%
Visibility—
Dew point39°
Wed, 2171° / 46°0Mostly clear
71 °Mostly clear

Merriam, Wednesday, 21 October

Mostly clear. High 71°, low 46°.

Pressure30.27 inHg
Wind5.5 mph NE
Humidity43%
Visibility—
Dew point42°
Thu, 2276° / 51°0Overcast
76 °Overcast

Merriam, Thursday, 22 October

Overcast. High 76°, low 51°.

Pressure30.18 inHg
Wind5.5 mph E
Humidity23%
Visibility—
Dew point31°
Fri, 2378° / 60°0Mostly clear
78 °Mostly clear

Merriam, Friday, 23 October

Mostly clear. High 78°, low 60°.

Pressure30.18 inHg
Wind6.5 mph E
Humidity26%
Visibility—
Dew point37°
Sat, 2477° / 54°0Clear
77 °Clear

Merriam, Saturday, 24 October

Clear. High 77°, low 54°.

Pressure30.18 inHg
Wind7.1 mph E
Humidity28%
Visibility—
Dew point37°
Sun, 2576° / 54°0Overcast
76 °Overcast

Merriam, Sunday, 25 October

Overcast. High 76°, low 54°.

Pressure30.15 inHg
Wind5.8 mph E
Humidity28%
Visibility—
Dew point36°
Mon, 2678° / 53°0.01Light rain
78 °Light rain

Merriam, Monday, 26 October

Light rain. High 78°, low 53°.

Pressure29.94 inHg
Wind11.1 mph W
Humidity30%
Visibility—
Dew point39°
Tue, 2766° / 50°0.02Light rain
66 °Light rain

Merriam, Tuesday, 27 October

Light rain. High 66°, low 50°.

Pressure29.97 inHg
Wind12.8 mph W
Humidity46%
Visibility—
Dew point41°
Wed, 2870° / 53°0.01Light rain
70 °Light rain

Merriam, Wednesday, 28 October

Light rain. High 70°, low 53°.

Pressure30.03 inHg
Wind10.3 mph S
Humidity30%
Visibility—
Dew point35°
Thu, 2961° / 55°0.11Light rain
61 °Light rain

Merriam, Thursday, 29 October

Light rain. High 61°, low 55°.

Pressure29.85 inHg
Wind8.2 mph SE
Humidity88%
Visibility—
Dew point56°
Fri, 3076° / 53°0.07Light rain
76 °Light rain

Merriam, Friday, 30 October

Light rain. High 76°, low 53°.

Pressure29.56 inHg
Wind24.4 mph SW
Humidity62%
Visibility—
Dew point59°
Sat, 3161° / 45°0Mostly clear
61 °Mostly clear

Merriam, Saturday, 31 October

Mostly clear. High 61°, low 45°.

Pressure29.97 inHg
Wind18.9 mph W
Humidity27%
Visibility—
Dew point23°

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Merriam, IL are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Merriam, IL since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.