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As of 00:03 CDT

Weather in Merriam, IL

68°Current weather

Merriam, Thursday, 15 October, 00:03

Overcast. Feels like 69°. High 81°, low 68°.

Pressure30.03 inHg
Wind0 mph N
Humidity100%
Visibility6.2 mi
Dew point68°
Fri, 1669° / 52°0.2Rain
69 °Rain

Merriam, Friday, 16 October

Rain. High 69°, low 52°.

Pressure30.15 inHg
Wind17.4 mph NW
Humidity45%
Visibility6.2 mi
Dew point35°
Sat, 1758° / 44°0Clear
58 °Clear

Merriam, Saturday, 17 October

Clear. High 58°, low 44°.

Pressure30.53 inHg
Wind7.9 mph N
Humidity53%
Visibility6.2 mi
Dew point38°
Sun, 1862° / 41°0Clear
62 °Clear

Merriam, Sunday, 18 October

Clear. High 62°, low 41°.

Pressure30.50 inHg
Wind5.7 mph SE
Humidity47%
Visibility6.2 mi
Dew point38°
Mon, 1968° / 42°0Partly cloudy
68 °Partly cloudy

Merriam, Monday, 19 October

Partly cloudy. High 68°, low 42°.

Pressure30.39 inHg
Wind4.1 mph SW
Humidity43%
Visibility—
Dew point40°
Tue, 2072° / 46°0Mostly clear
72 °Mostly clear

Merriam, Tuesday, 20 October

Mostly clear. High 72°, low 46°.

Pressure30.33 inHg
Wind6.7 mph SE
Humidity42%
Visibility—
Dew point43°
Wed, 2176° / 54°0Mostly clear
76 °Mostly clear

Merriam, Wednesday, 21 October

Mostly clear. High 76°, low 54°.

Pressure30.30 inHg
Wind7.7 mph SE
Humidity33%
Visibility—
Dew point42°
Thu, 2279° / 55°0Clear
79 °Clear

Merriam, Thursday, 22 October

Clear. High 79°, low 55°.

Pressure30.24 inHg
Wind8.4 mph SE
Humidity33%
Visibility—
Dew point43°
Fri, 2380° / 61°0Partly cloudy
80 °Partly cloudy

Merriam, Friday, 23 October

Partly cloudy. High 80°, low 61°.

Pressure30.12 inHg
Wind19 mph S
Humidity42%
Visibility—
Dew point53°
Sat, 2470° / 65°0.2Light rain
70 °Light rain

Merriam, Saturday, 24 October

Light rain. High 70°, low 65°.

Pressure30.21 inHg
Wind13.7 mph S
Humidity81%
Visibility—
Dew point60°
Sun, 2566° / 62°1.22Rain
66 °Rain

Merriam, Sunday, 25 October

Rain. High 66°, low 62°.

Pressure30.12 inHg
Wind9.4 mph S
Humidity93%
Visibility—
Dew point63°
Mon, 2663° / 49°0.42Rain
63 °Rain

Merriam, Monday, 26 October

Rain. High 63°, low 49°.

Pressure30.12 inHg
Wind18.5 mph NW
Humidity61%
Visibility—
Dew point44°
Tue, 2763° / 45°0Partly cloudy
63 °Partly cloudy

Merriam, Tuesday, 27 October

Partly cloudy. High 63°, low 45°.

Pressure30.12 inHg
Wind10 mph NE
Humidity36%
Visibility—
Dew point33°
Wed, 2864° / 48°0Overcast
64 °Overcast

Merriam, Wednesday, 28 October

Overcast. High 64°, low 48°.

Pressure29.85 inHg
Wind9.7 mph N
Humidity45%
Visibility—
Dew point38°
Thu, 2968° / 47°0Clear
68 °Clear

Merriam, Thursday, 29 October

Clear. High 68°, low 47°.

Pressure30.03 inHg
Wind12.4 mph NW
Humidity42%
Visibility—
Dew point41°
Fri, 3064° / 45°0Clear
64 °Clear

Merriam, Friday, 30 October

Clear. High 64°, low 45°.

Pressure30.15 inHg
Wind8.3 mph SE
Humidity30%
Visibility—
Dew point30°

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.