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As of 23:21 CDT

Weather in Merriam, IL

52°Current weather

Merriam, Saturday, 24 October, 23:21

Clear. Feels like 50°. High 74°, low 46°.

Pressure30.36 inHg
Wind0 mph N
Humidity71%
Visibility6.2 mi
Dew point43°
Sun, 2576° / 46°0Overcast
76 °Overcast

Merriam, Sunday, 25 October

Overcast. High 76°, low 46°.

Pressure30.42 inHg
Wind1.3 mph SE
Humidity49%
Visibility6.2 mi
Dew point50°
Mon, 2676° / 49°0Overcast
76 °Overcast

Merriam, Monday, 26 October

Overcast. High 76°, low 49°.

Pressure30.33 inHg
Wind5.3 mph SW
Humidity50%
Visibility6.2 mi
Dew point52°
Tue, 2772° / 52°0Overcast
72 °Overcast

Merriam, Tuesday, 27 October

Overcast. High 72°, low 52°.

Pressure30.27 inHg
Wind3.4 mph S
Humidity57%
Visibility6.2 mi
Dew point53°
Wed, 2875° / 52°0Clear
75 °Clear

Merriam, Wednesday, 28 October

Clear. High 75°, low 52°.

Pressure30.24 inHg
Wind6.6 mph S
Humidity47%
Visibility6.2 mi
Dew point50°
Thu, 2977° / 54°0Clear
77 °Clear

Merriam, Thursday, 29 October

Clear. High 77°, low 54°.

Pressure30.21 inHg
Wind8 mph SW
Humidity43%
Visibility—
Dew point49°
Fri, 3079° / 54°0Overcast
79 °Overcast

Merriam, Friday, 30 October

Overcast. High 79°, low 54°.

Pressure30.18 inHg
Wind7 mph S
Humidity37%
Visibility—
Dew point45°
Sat, 3179° / 62°0Overcast
79 °Overcast

Merriam, Saturday, 31 October

Overcast. High 79°, low 62°.

Pressure30.12 inHg
Wind16.5 mph S
Humidity37%
Visibility—
Dew point48°
Sun, 0182° / 64°0.15Light rain
82 °Light rain

Merriam, Sunday, 1 November

Light rain. High 82°, low 64°.

Pressure29.97 inHg
Wind21.4 mph SW
Humidity51%
Visibility—
Dew point58°
Mon, 0278° / 64°0Overcast
78 °Overcast

Merriam, Monday, 2 November

Overcast. High 78°, low 64°.

Pressure30.06 inHg
Wind7.6 mph NE
Humidity50%
Visibility—
Dew point53°
Tue, 0363° / 51°0.31Rain
63 °Rain

Merriam, Tuesday, 3 November

Rain. High 63°, low 51°.

Pressure30.15 inHg
Wind17.7 mph E
Humidity84%
Visibility—
Dew point48°
Wed, 0465° / 57°0.72Rain
65 °Rain

Merriam, Wednesday, 4 November

Rain. High 65°, low 57°.

Pressure29.71 inHg
Wind17.3 mph SW
Humidity85%
Visibility—
Dew point56°
Thu, 0565° / 52°0Overcast
65 °Overcast

Merriam, Thursday, 5 November

Overcast. High 65°, low 52°.

Pressure30.09 inHg
Wind9.3 mph NW
Humidity42%
Visibility—
Dew point39°
Fri, 0671° / 47°0Clear
71 °Clear

Merriam, Friday, 6 November

Clear. High 71°, low 47°.

Pressure30.00 inHg
Wind11.2 mph S
Humidity31%
Visibility—
Dew point34°
Sat, 0785° / 64°0Overcast
85 °Overcast

Merriam, Saturday, 7 November

Overcast. High 85°, low 64°.

Pressure29.68 inHg
Wind18.6 mph SW
Humidity47%
Visibility—
Dew point58°
Sun, 0868° / 53°0Overcast
68 °Overcast

Merriam, Sunday, 8 November

Overcast. High 68°, low 53°.

Pressure29.97 inHg
Wind15 mph NW
Humidity24%
Visibility—
Dew point28°

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.