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As of 03:54 CDT

Weather in Merriam, IL

50°Current weather

Merriam, Tuesday, 20 October, 03:54

Overcast. Feels like 50°. High 74°, low 48°.

Pressure30.33 inHg
Wind0 mph N
Humidity87%
Visibility6.2 mi
Dew point46°
Wed, 2175° / 44°0Clear
75 °Clear

Merriam, Wednesday, 21 October

Clear. High 75°, low 44°.

Pressure30.27 inHg
Wind1.8 mph N
Humidity44%
Visibility6.2 mi
Dew point47°
Thu, 2273° / 49°0Clear
73 °Clear

Merriam, Thursday, 22 October

Clear. High 73°, low 49°.

Pressure30.27 inHg
Wind4.5 mph NE
Humidity43%
Visibility6.2 mi
Dew point47°
Fri, 2371° / 50°0Clear
71 °Clear

Merriam, Friday, 23 October

Clear. High 71°, low 50°.

Pressure30.33 inHg
Wind6.2 mph E
Humidity50%
Visibility6.2 mi
Dew point49°
Sat, 2473° / 48°0Partly cloudy
73 °Partly cloudy

Merriam, Saturday, 24 October

Partly cloudy. High 73°, low 48°.

Pressure30.36 inHg
Wind6.6 mph E
Humidity43%
Visibility—
Dew point44°
Sun, 2576° / 51°0Overcast
76 °Overcast

Merriam, Sunday, 25 October

Overcast. High 76°, low 51°.

Pressure30.42 inHg
Wind5.7 mph SW
Humidity37%
Visibility—
Dew point44°
Mon, 2675° / 56°0Overcast
75 °Overcast

Merriam, Monday, 26 October

Overcast. High 75°, low 56°.

Pressure30.21 inHg
Wind13.6 mph SW
Humidity29%
Visibility—
Dew point38°
Tue, 2760° / 50°0.01Light rain
60 °Light rain

Merriam, Tuesday, 27 October

Light rain. High 60°, low 50°.

Pressure30.33 inHg
Wind14.4 mph N
Humidity45%
Visibility—
Dew point37°
Wed, 2848° / 33°0Clear
48 °Clear

Merriam, Wednesday, 28 October

Clear. High 48°, low 33°.

Pressure30.50 inHg
Wind16 mph N
Humidity18%
Visibility—
Dew point4°
Thu, 2955° / 29°0Overcast
55 °Overcast

Merriam, Thursday, 29 October

Overcast. High 55°, low 29°.

Pressure30.27 inHg
Wind7.9 mph SW
Humidity16%
Visibility—
Dew point5°
Fri, 3044° / 41°0.34Rain
44 °Rain

Merriam, Friday, 30 October

Rain. High 44°, low 41°.

Pressure30.15 inHg
Wind10 mph SW
Humidity87%
Visibility—
Dew point39°
Sat, 3157° / 45°0.01Light rain
57 °Light rain

Merriam, Saturday, 31 October

Light rain. High 57°, low 45°.

Pressure30.15 inHg
Wind5.9 mph S
Humidity73%
Visibility—
Dew point46°
Sun, 0160° / 47°0.22Rain
60 °Rain

Merriam, Sunday, 1 November

Rain. High 60°, low 47°.

Pressure30.21 inHg
Wind9 mph E
Humidity57%
Visibility—
Dew point44°
Mon, 0254° / 46°0.93Rain
54 °Rain

Merriam, Monday, 2 November

Rain. High 54°, low 46°.

Pressure30.15 inHg
Wind12.8 mph NE
Humidity83%
Visibility—
Dew point45°
Tue, 0356° / 40°0Mostly clear
56 °Mostly clear

Merriam, Tuesday, 3 November

Mostly clear. High 56°, low 40°.

Pressure30.15 inHg
Wind9 mph N
Humidity32%
Visibility—
Dew point24°
Wed, 0459° / 38°0Clear
59 °Clear

Merriam, Wednesday, 4 November

Clear. High 59°, low 38°.

Pressure30.12 inHg
Wind5.7 mph NW
Humidity29%
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.