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As of 06:40 CDT

Weather in Mason, IL

62°Current weather

Mason, Tuesday, 13 October, 06:40

Mostly clear. Feels like 62°. High 91°, low 62°.

Pressure29.91 inHg
Wind4.6 mph SE
Humidity87%
Visibility6.2 mi
Dew point58°
Wed, 1483° / 67°0.32Rain
83 °Rain

Mason, Wednesday, 14 October

Rain. High 83°, low 67°.

Pressure30.00 inHg
Wind2.9 mph S
Humidity77%
Visibility6.2 mi
Dew point70°
Thu, 1582° / 70°0.3Rain
82 °Rain

Mason, Thursday, 15 October

Rain. High 82°, low 70°.

Pressure30.00 inHg
Wind9.6 mph SW
Humidity87%
Visibility2.2 mi
Dew point72°
Fri, 1672° / 52°0.09Rain
72 °Rain

Mason, Friday, 16 October

Rain. High 72°, low 52°.

Pressure30.24 inHg
Wind22.1 mph NW
Humidity41%
Visibility6.2 mi
Dew point35°
Sat, 1760° / 43°0Clear
60 °Clear

Mason, Saturday, 17 October

Clear. High 60°, low 43°.

Pressure30.50 inHg
Wind10.6 mph N
Humidity47%
Visibility—
Dew point37°
Sun, 1866° / 43°0Clear
66 °Clear

Mason, Sunday, 18 October

Clear. High 66°, low 43°.

Pressure30.33 inHg
Wind8 mph S
Humidity37%
Visibility—
Dew point34°
Mon, 1972° / 56°0.01Light rain
72 °Light rain

Mason, Monday, 19 October

Light rain. High 72°, low 56°.

Pressure30.24 inHg
Wind12.2 mph SW
Humidity57%
Visibility—
Dew point52°
Tue, 2067° / 58°0.15Light rain
67 °Light rain

Mason, Tuesday, 20 October

Light rain. High 67°, low 58°.

Pressure30.24 inHg
Wind8.3 mph SE
Humidity75%
Visibility—
Dew point57°
Wed, 2177° / 58°0Clear
77 °Clear

Mason, Wednesday, 21 October

Clear. High 77°, low 58°.

Pressure30.21 inHg
Wind12.7 mph SE
Humidity50%
Visibility—
Dew point54°
Thu, 2280° / 62°0Overcast
80 °Overcast

Mason, Thursday, 22 October

Overcast. High 80°, low 62°.

Pressure30.09 inHg
Wind17 mph S
Humidity42%
Visibility—
Dew point53°
Fri, 2369° / 60°0.13Light rain
69 °Light rain

Mason, Friday, 23 October

Light rain. High 69°, low 60°.

Pressure30.09 inHg
Wind17.9 mph S
Humidity91%
Visibility—
Dew point59°
Sat, 2459° / 54°0Overcast
59 °Overcast

Mason, Saturday, 24 October

Overcast. High 59°, low 54°.

Pressure30.27 inHg
Wind6.4 mph NW
Humidity57%
Visibility—
Dew point42°
Sun, 2562° / 53°0Overcast
62 °Overcast

Mason, Sunday, 25 October

Overcast. High 62°, low 53°.

Pressure30.15 inHg
Wind10.2 mph NE
Humidity37%
Visibility—
Dew point34°
Mon, 2662° / 46°0Clear
62 °Clear

Mason, Monday, 26 October

Clear. High 62°, low 46°.

Pressure30.27 inHg
Wind14.4 mph N
Humidity41%
Visibility—
Dew point36°
Tue, 2763° / 44°0Overcast
63 °Overcast

Mason, Tuesday, 27 October

Overcast. High 63°, low 44°.

Pressure30.27 inHg
Wind6.2 mph W
Humidity28%
Visibility—
Dew point26°
Wed, 2866° / 46°0Overcast
66 °Overcast

Mason, Wednesday, 28 October

Overcast. High 66°, low 46°.

Pressure30.03 inHg
Wind13.2 mph NW
Humidity43%
Visibility—
Dew point40°

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 Mason, 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 Mason, 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.