EN
English Español

As of 16:06 CDT

Weather in Duncan, IL

67°Current weather

Duncan, Wednesday, 14 October, 16:06

Overcast. Feels like 68°. High 68°, low 63°.

Pressure30.06 inHg
Wind7.9 mph NE
Humidity85%
Visibility6.2 mi
Dew point62°
Thu, 1569° / 59°0.33Rain
69 °Rain

Duncan, Thursday, 15 October

Rain. High 69°, low 59°.

Pressure29.97 inHg
Wind8.2 mph SE
Humidity89%
Visibility4.4 mi
Dew point62°
Fri, 1657° / 47°0.05Light rain
57 °Light rain

Duncan, Friday, 16 October

Light rain. High 57°, low 47°.

Pressure30.12 inHg
Wind16.8 mph NW
Humidity62%
Visibility6.2 mi
Dew point41°
Sat, 1756° / 38°0Clear
56 °Clear

Duncan, Saturday, 17 October

Clear. High 56°, low 38°.

Pressure30.56 inHg
Wind1.4 mph N
Humidity46%
Visibility6.2 mi
Dew point30°
Sun, 1861° / 41°0Clear
61 °Clear

Duncan, Sunday, 18 October

Clear. High 61°, low 41°.

Pressure30.47 inHg
Wind9.9 mph S
Humidity51%
Visibility6.2 mi
Dew point39°
Mon, 1964° / 40°0Clear
64 °Clear

Duncan, Monday, 19 October

Clear. High 64°, low 40°.

Pressure30.42 inHg
Wind5.3 mph S
Humidity42%
Visibility—
Dew point36°
Tue, 2069° / 44°0Clear
69 °Clear

Duncan, Tuesday, 20 October

Clear. High 69°, low 44°.

Pressure30.30 inHg
Wind7.2 mph E
Humidity43%
Visibility—
Dew point40°
Wed, 2174° / 55°0Clear
74 °Clear

Duncan, Wednesday, 21 October

Clear. High 74°, low 55°.

Pressure30.18 inHg
Wind12.2 mph S
Humidity50%
Visibility—
Dew point51°
Thu, 2269° / 64°0.15Light rain
69 °Light rain

Duncan, Thursday, 22 October

Light rain. High 69°, low 64°.

Pressure29.97 inHg
Wind17.2 mph SW
Humidity77%
Visibility—
Dew point60°
Fri, 2372° / 56°0Partly cloudy
72 °Partly cloudy

Duncan, Friday, 23 October

Partly cloudy. High 72°, low 56°.

Pressure30.09 inHg
Wind9.7 mph SE
Humidity68%
Visibility—
Dew point56°
Sat, 2472° / 51°0.13Light rain
72 °Light rain

Duncan, Saturday, 24 October

Light rain. High 72°, low 51°.

Pressure29.91 inHg
Wind18.6 mph NW
Humidity86%
Visibility—
Dew point63°
Sun, 2557° / 42°0Clear
57 °Clear

Duncan, Sunday, 25 October

Clear. High 57°, low 42°.

Pressure30.36 inHg
Wind11.4 mph NW
Humidity39%
Visibility—
Dew point30°
Mon, 2655° / 40°0Clear
55 °Clear

Duncan, Monday, 26 October

Clear. High 55°, low 40°.

Pressure30.39 inHg
Wind7.4 mph NW
Humidity37%
Visibility—
Dew point27°
Tue, 2758° / 42°0Overcast
58 °Overcast

Duncan, Tuesday, 27 October

Overcast. High 58°, low 42°.

Pressure30.27 inHg
Wind12 mph SW
Humidity36%
Visibility—
Dew point29°
Wed, 2857° / 48°0.02Light rain
57 °Light rain

Duncan, Wednesday, 28 October

Light rain. High 57°, low 48°.

Pressure30.06 inHg
Wind12.4 mph SW
Humidity43%
Visibility—
Dew point34°
Thu, 2963° / 46°0Partly cloudy
63 °Partly cloudy

Duncan, Thursday, 29 October

Partly cloudy. High 63°, low 46°.

Pressure30.03 inHg
Wind10.9 mph SW
Humidity59%
Visibility—
Dew point44°

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 Duncan, 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 Duncan, 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.