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As of 14:19 CDT

Weather in Sinclair, IL

85°Current weather

Sinclair, Wednesday, 7 October, 14:19

Clear. Feels like 84°. High 85°, low 56°.

Pressure29.85 inHg
Wind8.4 mph W
Humidity39%
Visibility6.2 mi
Dew point59°
Thu, 0880° / 50°0Mostly clear
80 °Mostly clear

Sinclair, Thursday, 8 October

Mostly clear. High 80°, low 50°.

Pressure30.12 inHg
Wind2.4 mph W
Humidity44%
Visibility6.2 mi
Dew point51°
Fri, 0983° / 53°0Clear
83 °Clear

Sinclair, Friday, 9 October

Clear. High 83°, low 53°.

Pressure30.12 inHg
Wind11.7 mph S
Humidity33%
Visibility6.2 mi
Dew point48°
Sat, 1084° / 61°0Clear
84 °Clear

Sinclair, Saturday, 10 October

Clear. High 84°, low 61°.

Pressure30.09 inHg
Wind9.3 mph S
Humidity42%
Visibility6.2 mi
Dew point57°
Sun, 1169° / 61°0.52Rain
69 °Rain

Sinclair, Sunday, 11 October

Rain. High 69°, low 61°.

Pressure29.85 inHg
Wind7.7 mph NE
Humidity79%
Visibility6.2 mi
Dew point59°
Mon, 1285° / 59°0Clear
85 °Clear

Sinclair, Monday, 12 October

Clear. High 85°, low 59°.

Pressure29.83 inHg
Wind8.9 mph SW
Humidity52%
Visibility—
Dew point59°
Tue, 1371° / 52°0Clear
71 °Clear

Sinclair, Tuesday, 13 October

Clear. High 71°, low 52°.

Pressure30.00 inHg
Wind17.8 mph NW
Humidity45%
Visibility—
Dew point48°
Wed, 1470° / 43°0Partly cloudy
70 °Partly cloudy

Sinclair, Wednesday, 14 October

Partly cloudy. High 70°, low 43°.

Pressure30.15 inHg
Wind11.8 mph E
Humidity33%
Visibility—
Dew point33°
Thu, 1588° / 57°0Clear
88 °Clear

Sinclair, Thursday, 15 October

Clear. High 88°, low 57°.

Pressure29.88 inHg
Wind19.1 mph S
Humidity31%
Visibility—
Dew point45°
Fri, 1679° / 57°0Overcast
79 °Overcast

Sinclair, Friday, 16 October

Overcast. High 79°, low 57°.

Pressure29.91 inHg
Wind16.4 mph W
Humidity40%
Visibility—
Dew point47°
Sat, 1761° / 44°0Clear
61 °Clear

Sinclair, Saturday, 17 October

Clear. High 61°, low 44°.

Pressure30.06 inHg
Wind14.4 mph NW
Humidity42%
Visibility—
Dew point35°
Sun, 1855° / 41°0Partly cloudy
55 °Partly cloudy

Sinclair, Sunday, 18 October

Partly cloudy. High 55°, low 41°.

Pressure30.15 inHg
Wind15 mph W
Humidity55%
Visibility—
Dew point35°
Mon, 1963° / 39°0Clear
63 °Clear

Sinclair, Monday, 19 October

Clear. High 63°, low 39°.

Pressure30.21 inHg
Wind8.3 mph NW
Humidity44%
Visibility—
Dew point35°
Tue, 2072° / 45°0Clear
72 °Clear

Sinclair, Tuesday, 20 October

Clear. High 72°, low 45°.

Pressure30.18 inHg
Wind7.4 mph W
Humidity32%
Visibility—
Dew point35°
Wed, 2166° / 47°0Clear
66 °Clear

Sinclair, Wednesday, 21 October

Clear. High 66°, low 47°.

Pressure30.24 inHg
Wind11.4 mph E
Humidity43%
Visibility—
Dew point39°
Thu, 2264° / 42°0Overcast
64 °Overcast

Sinclair, Thursday, 22 October

Overcast. High 64°, low 42°.

Pressure30.24 inHg
Wind8.5 mph SE
Humidity28%
Visibility—
Dew point25°

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 Sinclair, 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 Sinclair, 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.