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As of 20:44 CDT

Weather in Merriam, IL

77°Current weather

Merriam, Thursday, 15 October, 20:44

Overcast. Feels like 78°. High 80°, low 69°.

Pressure29.91 inHg
Wind0 mph N
Humidity83%
Visibility6.2 mi
Dew point71°
Fri, 1673° / 51°0.04Light rain
73 °Light rain

Merriam, Friday, 16 October

Light rain. High 73°, low 51°.

Pressure30.15 inHg
Wind16.6 mph NW
Humidity47%
Visibility6.2 mi
Dew point37°
Sat, 1758° / 44°0Clear
58 °Clear

Merriam, Saturday, 17 October

Clear. High 58°, low 44°.

Pressure30.56 inHg
Wind8.2 mph NE
Humidity49%
Visibility6.2 mi
Dew point37°
Sun, 1863° / 41°0Clear
63 °Clear

Merriam, Sunday, 18 October

Clear. High 63°, low 41°.

Pressure30.53 inHg
Wind6.9 mph SE
Humidity47%
Visibility6.2 mi
Dew point39°
Mon, 1968° / 43°0Clear
68 °Clear

Merriam, Monday, 19 October

Clear. High 68°, low 43°.

Pressure30.42 inHg
Wind3.9 mph S
Humidity48%
Visibility6.2 mi
Dew point43°
Tue, 2070° / 44°0Clear
70 °Clear

Merriam, Tuesday, 20 October

Clear. High 70°, low 44°.

Pressure30.33 inHg
Wind4.4 mph NE
Humidity39%
Visibility—
Dew point40°
Wed, 2173° / 49°0Clear
73 °Clear

Merriam, Wednesday, 21 October

Clear. High 73°, low 49°.

Pressure30.27 inHg
Wind4.9 mph NE
Humidity38%
Visibility—
Dew point41°
Thu, 2276° / 52°0Partly cloudy
76 °Partly cloudy

Merriam, Thursday, 22 October

Partly cloudy. High 76°, low 52°.

Pressure30.24 inHg
Wind5.4 mph E
Humidity23%
Visibility—
Dew point31°
Fri, 2378° / 54°0Clear
78 °Clear

Merriam, Friday, 23 October

Clear. High 78°, low 54°.

Pressure30.15 inHg
Wind8.4 mph SE
Humidity25%
Visibility—
Dew point35°
Sat, 2475° / 55°0Overcast
75 °Overcast

Merriam, Saturday, 24 October

Overcast. High 75°, low 55°.

Pressure30.21 inHg
Wind7.7 mph SE
Humidity29%
Visibility—
Dew point37°
Sun, 2576° / 55°0Overcast
76 °Overcast

Merriam, Sunday, 25 October

Overcast. High 76°, low 55°.

Pressure30.21 inHg
Wind7 mph E
Humidity33%
Visibility—
Dew point42°
Mon, 2678° / 55°0Overcast
78 °Overcast

Merriam, Monday, 26 October

Overcast. High 78°, low 55°.

Pressure30.06 inHg
Wind10.6 mph S
Humidity34%
Visibility—
Dew point42°
Tue, 2772° / 53°0Partly cloudy
72 °Partly cloudy

Merriam, Tuesday, 27 October

Partly cloudy. High 72°, low 53°.

Pressure30.06 inHg
Wind10.5 mph SW
Humidity35%
Visibility—
Dew point39°
Wed, 2870° / 55°0.62Heavy rain
70 °Heavy rain

Merriam, Wednesday, 28 October

Heavy rain. High 70°, low 55°.

Pressure29.71 inHg
Wind20.4 mph S
Humidity85%
Visibility—
Dew point59°
Thu, 2963° / 48°0Partly cloudy
63 °Partly cloudy

Merriam, Thursday, 29 October

Partly cloudy. High 63°, low 48°.

Pressure29.94 inHg
Wind16.5 mph W
Humidity51%
Visibility—
Dew point40°
Fri, 3069° / 47°0Partly cloudy
69 °Partly cloudy

Merriam, Friday, 30 October

Partly cloudy. High 69°, low 47°.

Pressure30.06 inHg
Wind7.1 mph NW
Humidity40%
Visibility—
Dew point39°

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.