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As of 21:33 CDT

Weather in Macoupin, IL

49°Current weather

Macoupin, Sunday, 18 October, 21:33

Clear. Feels like 46°. High 66°, low 38°.

Pressure30.36 inHg
Wind6.4 mph SE
Humidity72%
Visibility6.2 mi
Dew point40°
Mon, 1969° / 41°0Mostly clear
69 °Mostly clear

Macoupin, Monday, 19 October

Mostly clear. High 69°, low 41°.

Pressure30.39 inHg
Wind2.7 mph S
Humidity45%
Visibility6.2 mi
Dew point43°
Tue, 2071° / 46°0Clear
71 °Clear

Macoupin, Tuesday, 20 October

Clear. High 71°, low 46°.

Pressure30.36 inHg
Wind1.7 mph E
Humidity47%
Visibility6.2 mi
Dew point46°
Wed, 2170° / 46°0Clear
70 °Clear

Macoupin, Wednesday, 21 October

Clear. High 70°, low 46°.

Pressure30.30 inHg
Wind0.4 mph W
Humidity49%
Visibility6.2 mi
Dew point48°
Thu, 2270° / 48°0Clear
70 °Clear

Macoupin, Thursday, 22 October

Clear. High 70°, low 48°.

Pressure30.30 inHg
Wind4.9 mph NE
Humidity52%
Visibility6.2 mi
Dew point48°
Fri, 2369° / 48°0Clear
69 °Clear

Macoupin, Friday, 23 October

Clear. High 69°, low 48°.

Pressure30.33 inHg
Wind6.8 mph SE
Humidity49%
Visibility—
Dew point46°
Sat, 2474° / 50°0Overcast
74 °Overcast

Macoupin, Saturday, 24 October

Overcast. High 74°, low 50°.

Pressure30.33 inHg
Wind10.3 mph S
Humidity40%
Visibility—
Dew point42°
Sun, 2569° / 55°0.01Light rain
69 °Light rain

Macoupin, Sunday, 25 October

Light rain. High 69°, low 55°.

Pressure30.33 inHg
Wind9.9 mph NW
Humidity28%
Visibility—
Dew point32°
Mon, 2670° / 53°0Overcast
70 °Overcast

Macoupin, Monday, 26 October

Overcast. High 70°, low 53°.

Pressure30.21 inHg
Wind13.6 mph S
Humidity47%
Visibility—
Dew point45°
Tue, 2764° / 56°0.07Light rain
64 °Light rain

Macoupin, Tuesday, 27 October

Light rain. High 64°, low 56°.

Pressure30.12 inHg
Wind8.7 mph S
Humidity51%
Visibility—
Dew point43°
Wed, 2858° / 55°0.14Light rain
58 °Light rain

Macoupin, Wednesday, 28 October

Light rain. High 58°, low 55°.

Pressure30.12 inHg
Wind7.2 mph SE
Humidity78%
Visibility—
Dew point51°
Thu, 2969° / 56°0.1Light rain
69 °Light rain

Macoupin, Thursday, 29 October

Light rain. High 69°, low 56°.

Pressure29.97 inHg
Wind13 mph S
Humidity66%
Visibility—
Dew point55°
Fri, 3071° / 63°0.17Light rain
71 °Light rain

Macoupin, Friday, 30 October

Light rain. High 71°, low 63°.

Pressure29.85 inHg
Wind15.8 mph S
Humidity83%
Visibility—
Dew point65°
Sat, 3163° / 57°0.05Light rain
63 °Light rain

Macoupin, Saturday, 31 October

Light rain. High 63°, low 57°.

Pressure30.00 inHg
Wind13.3 mph SE
Humidity50%
Visibility—
Dew point43°
Sun, 0163° / 46°0.15Light rain
63 °Light rain

Macoupin, Sunday, 1 November

Light rain. High 63°, low 46°.

Pressure29.97 inHg
Wind25.2 mph W
Humidity48%
Visibility—
Dew point35°
Mon, 0263° / 44°0Clear
63 °Clear

Macoupin, Monday, 2 November

Clear. High 63°, low 44°.

Pressure30.06 inHg
Wind11.4 mph W
Humidity39%
Visibility—
Dew point33°

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 Macoupin, 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 Macoupin, 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.