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As of 15:56 CDT

Weather in Merriam, IL

82°Current weather

Merriam, Thursday, 15 October, 15:56

Overcast. Feels like 88°. High 82°, low 69°.

Pressure29.88 inHg
Wind6.9 mph S
Humidity74%
Visibility1.8 mi
Dew point73°
Fri, 1670° / 52°0.03Light rain
70 °Light rain

Merriam, Friday, 16 October

Light rain. High 70°, low 52°.

Pressure30.15 inHg
Wind17.5 mph NW
Humidity43%
Visibility6.2 mi
Dew point37°
Sat, 1758° / 46°0Clear
58 °Clear

Merriam, Saturday, 17 October

Clear. High 58°, low 46°.

Pressure30.53 inHg
Wind8.6 mph NE
Humidity51%
Visibility6.2 mi
Dew point38°
Sun, 1864° / 40°0Clear
64 °Clear

Merriam, Sunday, 18 October

Clear. High 64°, low 40°.

Pressure30.53 inHg
Wind7.1 mph SE
Humidity46%
Visibility6.2 mi
Dew point39°
Mon, 1968° / 43°0Clear
68 °Clear

Merriam, Monday, 19 October

Clear. High 68°, low 43°.

Pressure30.39 inHg
Wind2.6 mph S
Humidity46%
Visibility6.2 mi
Dew point42°
Tue, 2070° / 44°0Overcast
70 °Overcast

Merriam, Tuesday, 20 October

Overcast. High 70°, low 44°.

Pressure30.33 inHg
Wind4.7 mph NE
Humidity39%
Visibility—
Dew point40°
Wed, 2173° / 48°0Clear
73 °Clear

Merriam, Wednesday, 21 October

Clear. High 73°, low 48°.

Pressure30.30 inHg
Wind6.3 mph E
Humidity37%
Visibility—
Dew point40°
Thu, 2275° / 52°0Clear
75 °Clear

Merriam, Thursday, 22 October

Clear. High 75°, low 52°.

Pressure30.27 inHg
Wind7.5 mph SE
Humidity29%
Visibility—
Dew point37°
Fri, 2377° / 54°0Partly cloudy
77 °Partly cloudy

Merriam, Friday, 23 October

Partly cloudy. High 77°, low 54°.

Pressure30.21 inHg
Wind9.3 mph SE
Humidity29%
Visibility—
Dew point38°
Sat, 2480° / 60°0Overcast
80 °Overcast

Merriam, Saturday, 24 October

Overcast. High 80°, low 60°.

Pressure30.21 inHg
Wind8.9 mph S
Humidity33%
Visibility—
Dew point44°
Sun, 2580° / 59°0Clear
80 °Clear

Merriam, Sunday, 25 October

Clear. High 80°, low 59°.

Pressure30.36 inHg
Wind7.5 mph NE
Humidity33%
Visibility—
Dew point44°
Mon, 2679° / 57°0Mostly clear
79 °Mostly clear

Merriam, Monday, 26 October

Mostly clear. High 79°, low 57°.

Pressure30.39 inHg
Wind9.8 mph E
Humidity35%
Visibility—
Dew point45°
Tue, 2776° / 56°0Overcast
76 °Overcast

Merriam, Tuesday, 27 October

Overcast. High 76°, low 56°.

Pressure30.27 inHg
Wind10.9 mph S
Humidity26%
Visibility—
Dew point36°
Wed, 2878° / 58°0Overcast
78 °Overcast

Merriam, Wednesday, 28 October

Overcast. High 78°, low 58°.

Pressure30.30 inHg
Wind9.6 mph S
Humidity27%
Visibility—
Dew point38°
Thu, 2978° / 53°0Partly cloudy
78 °Partly cloudy

Merriam, Thursday, 29 October

Partly cloudy. High 78°, low 53°.

Pressure30.12 inHg
Wind12.1 mph SW
Humidity35%
Visibility—
Dew point45°
Fri, 3066° / 55°0.01Light rain
66 °Light rain

Merriam, Friday, 30 October

Light rain. High 66°, low 55°.

Pressure30.21 inHg
Wind17.1 mph N
Humidity78%
Visibility—
Dew point54°

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.