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As of 16:52 CDT

Weather in Merriam, IL

59°Current weather

Merriam, Saturday, 17 October, 16:52

Clear. Feels like 56°. High 59°, low 42°.

Pressure30.47 inHg
Wind3.4 mph N
Humidity31%
Visibility6.2 mi
Dew point29°
Sun, 1862° / 40°0Clear
62 °Clear

Merriam, Sunday, 18 October

Clear. High 62°, low 40°.

Pressure30.50 inHg
Wind6.4 mph SE
Humidity50%
Visibility6.2 mi
Dew point40°
Mon, 1967° / 42°0Clear
67 °Clear

Merriam, Monday, 19 October

Clear. High 67°, low 42°.

Pressure30.42 inHg
Wind0.3 mph SE
Humidity47%
Visibility6.2 mi
Dew point44°
Tue, 2069° / 46°0Clear
69 °Clear

Merriam, Tuesday, 20 October

Clear. High 69°, low 46°.

Pressure30.36 inHg
Wind2.7 mph NE
Humidity46%
Visibility6.2 mi
Dew point46°
Wed, 2170° / 51°0Clear
70 °Clear

Merriam, Wednesday, 21 October

Clear. High 70°, low 51°.

Pressure30.27 inHg
Wind2.5 mph NE
Humidity49%
Visibility6.2 mi
Dew point46°
Thu, 2271° / 48°0Clear
71 °Clear

Merriam, Thursday, 22 October

Clear. High 71°, low 48°.

Pressure30.24 inHg
Wind5.4 mph NE
Humidity43%
Visibility—
Dew point44°
Fri, 2373° / 50°0Mostly clear
73 °Mostly clear

Merriam, Friday, 23 October

Mostly clear. High 73°, low 50°.

Pressure30.24 inHg
Wind6.1 mph E
Humidity35%
Visibility—
Dew point39°
Sat, 2475° / 53°0Overcast
75 °Overcast

Merriam, Saturday, 24 October

Overcast. High 75°, low 53°.

Pressure30.30 inHg
Wind7.6 mph SE
Humidity27%
Visibility—
Dew point35°
Sun, 2577° / 57°0Overcast
77 °Overcast

Merriam, Sunday, 25 October

Overcast. High 77°, low 57°.

Pressure30.27 inHg
Wind14.3 mph SW
Humidity33%
Visibility—
Dew point43°
Mon, 2679° / 58°0Overcast
79 °Overcast

Merriam, Monday, 26 October

Overcast. High 79°, low 58°.

Pressure30.18 inHg
Wind11.6 mph SW
Humidity30%
Visibility—
Dew point41°
Tue, 2766° / 54°0Overcast
66 °Overcast

Merriam, Tuesday, 27 October

Overcast. High 66°, low 54°.

Pressure30.21 inHg
Wind13.4 mph NE
Humidity63%
Visibility—
Dew point53°
Wed, 2866° / 45°0Mostly clear
66 °Mostly clear

Merriam, Wednesday, 28 October

Mostly clear. High 66°, low 45°.

Pressure30.27 inHg
Wind12.3 mph E
Humidity33%
Visibility—
Dew point31°
Thu, 2976° / 54°0.02Light rain
76 °Light rain

Merriam, Thursday, 29 October

Light rain. High 76°, low 54°.

Pressure30.03 inHg
Wind15.2 mph S
Humidity70%
Visibility—
Dew point52°
Fri, 3078° / 62°0Overcast
78 °Overcast

Merriam, Friday, 30 October

Overcast. High 78°, low 62°.

Pressure29.94 inHg
Wind21.2 mph S
Humidity47%
Visibility—
Dew point54°
Sat, 3174° / 65°0.22Light rain
74 °Light rain

Merriam, Saturday, 31 October

Light rain. High 74°, low 65°.

Pressure29.94 inHg
Wind24.3 mph SW
Humidity79%
Visibility—
Dew point64°
Sun, 0177° / 63°0.03Light rain
77 °Light rain

Merriam, Sunday, 1 November

Light rain. High 77°, low 63°.

Pressure30.15 inHg
Wind14.2 mph S
Humidity72%
Visibility—
Dew point65°

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.