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As of 17:00 CDT

Weather in Merriam, IL

75°Current weather

Merriam, Thursday, 22 October, 17:00

Clear. Feels like 74°. High 76°, low 46°.

Pressure30.21 inHg
Wind3.4 mph NE
Humidity29%
Visibility6.2 mi
Dew point43°
Fri, 2374° / 46°0Clear
74 °Clear

Merriam, Friday, 23 October

Clear. High 74°, low 46°.

Pressure30.30 inHg
Wind4.1 mph SE
Humidity46%
Visibility6.2 mi
Dew point48°
Sat, 2472° / 46°0Overcast
72 °Overcast

Merriam, Saturday, 24 October

Overcast. High 72°, low 46°.

Pressure30.36 inHg
Wind4.3 mph SE
Humidity49%
Visibility6.2 mi
Dew point48°
Sun, 2574° / 48°0Partly cloudy
74 °Partly cloudy

Merriam, Sunday, 25 October

Partly cloudy. High 74°, low 48°.

Pressure30.42 inHg
Wind2 mph SE
Humidity44%
Visibility6.2 mi
Dew point48°
Mon, 2672° / 50°0Overcast
72 °Overcast

Merriam, Monday, 26 October

Overcast. High 72°, low 50°.

Pressure30.36 inHg
Wind0.9 mph E
Humidity49%
Visibility6.2 mi
Dew point49°
Tue, 2770° / 49°0Overcast
70 °Overcast

Merriam, Tuesday, 27 October

Overcast. High 70°, low 49°.

Pressure30.27 inHg
Wind5.6 mph E
Humidity45%
Visibility—
Dew point44°
Wed, 2870° / 53°0Clear
70 °Clear

Merriam, Wednesday, 28 October

Clear. High 70°, low 53°.

Pressure30.18 inHg
Wind9.4 mph W
Humidity50%
Visibility—
Dew point46°
Thu, 2975° / 52°0Overcast
75 °Overcast

Merriam, Thursday, 29 October

Overcast. High 75°, low 52°.

Pressure30.18 inHg
Wind7.5 mph S
Humidity36%
Visibility—
Dew point42°
Fri, 3079° / 55°0Overcast
79 °Overcast

Merriam, Friday, 30 October

Overcast. High 79°, low 55°.

Pressure30.00 inHg
Wind13.9 mph SW
Humidity28%
Visibility—
Dew point39°
Sat, 3160° / 57°0.06Light rain
60 °Light rain

Merriam, Saturday, 31 October

Light rain. High 60°, low 57°.

Pressure30.09 inHg
Wind8.1 mph N
Humidity84%
Visibility—
Dew point55°
Sun, 0157° / 52°1.01Rain
57 °Rain

Merriam, Sunday, 1 November

Rain. High 57°, low 52°.

Pressure29.94 inHg
Wind13.3 mph N
Humidity94%
Visibility—
Dew point55°
Mon, 0262° / 49°0Partly cloudy
62 °Partly cloudy

Merriam, Monday, 2 November

Partly cloudy. High 62°, low 49°.

Pressure30.12 inHg
Wind13.3 mph N
Humidity41%
Visibility—
Dew point35°
Tue, 0359° / 43°0Overcast
59 °Overcast

Merriam, Tuesday, 3 November

Overcast. High 59°, low 43°.

Pressure30.36 inHg
Wind8.5 mph NE
Humidity34%
Visibility—
Dew point28°
Wed, 0460° / 46°0Overcast
60 °Overcast

Merriam, Wednesday, 4 November

Overcast. High 60°, low 46°.

Pressure30.45 inHg
Wind8.1 mph NE
Humidity40%
Visibility—
Dew point33°
Thu, 0560° / 46°0Overcast
60 °Overcast

Merriam, Thursday, 5 November

Overcast. High 60°, low 46°.

Pressure30.45 inHg
Wind7.6 mph E
Humidity32%
Visibility—
Dew point26°
Fri, 0662° / 49°0Overcast
62 °Overcast

Merriam, Friday, 6 November

Overcast. High 62°, low 49°.

Pressure30.21 inHg
Wind7.4 mph SE
Humidity37%
Visibility—
Dew point34°

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.