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As of 14:20 CDT

Weather in Mason, IL

88°Current weather

Mason, Saturday, 8 August, 14:20

Clear. Feels like 100°. High 89°, low 71°.

Pressure30.03 inHg
Wind2 mph SW
Humidity69%
Visibility6.2 mi
Dew point76°
Sun, 0992° / 73°0Partly cloudy
92 °Partly cloudy

Mason, Sunday, 9 August

Partly cloudy. High 92°, low 73°.

Pressure30.00 inHg
Wind12.2 mph S
Humidity64%
Visibility6.2 mi
Dew point72°
Mon, 1093° / 75°0Partly cloudy
93 °Partly cloudy

Mason, Monday, 10 August

Partly cloudy. High 93°, low 75°.

Pressure29.97 inHg
Wind14.7 mph SW
Humidity62%
Visibility6.2 mi
Dew point74°
Tue, 1191° / 76°0Partly cloudy
91 °Partly cloudy

Mason, Tuesday, 11 August

Partly cloudy. High 91°, low 76°.

Pressure29.91 inHg
Wind14.3 mph SW
Humidity57%
Visibility6.2 mi
Dew point73°
Wed, 1288° / 70°0.35Rain
88 °Rain

Mason, Wednesday, 12 August

Rain. High 88°, low 70°.

Pressure29.83 inHg
Wind4.7 mph NW
Humidity63%
Visibility6.2 mi
Dew point72°
Thu, 1381° / 70°0.75Rain
81 °Rain

Mason, Thursday, 13 August

Rain. High 81°, low 70°.

Pressure29.88 inHg
Wind10 mph S
Humidity77%
Visibility—
Dew point72°
Fri, 1475° / 61°0.04Light rain
75 °Light rain

Mason, Friday, 14 August

Light rain. High 75°, low 61°.

Pressure30.15 inHg
Wind12.2 mph NE
Humidity53%
Visibility—
Dew point55°
Sat, 1575° / 55°0Partly cloudy
75 °Partly cloudy

Mason, Saturday, 15 August

Partly cloudy. High 75°, low 55°.

Pressure30.30 inHg
Wind7.2 mph NE
Humidity57%
Visibility—
Dew point55°
Sun, 1680° / 58°0.02Light rain
80 °Light rain

Mason, Sunday, 16 August

Light rain. High 80°, low 58°.

Pressure30.21 inHg
Wind9 mph S
Humidity55%
Visibility—
Dew point57°
Mon, 1787° / 68°0.16Light rain
87 °Light rain

Mason, Monday, 17 August

Light rain. High 87°, low 68°.

Pressure29.97 inHg
Wind16.1 mph S
Humidity79%
Visibility—
Dew point73°
Tue, 1884° / 72°0Overcast
84 °Overcast

Mason, Tuesday, 18 August

Overcast. High 84°, low 72°.

Pressure29.97 inHg
Wind9.6 mph NE
Humidity70%
Visibility—
Dew point72°
Wed, 1988° / 70°0Partly cloudy
88 °Partly cloudy

Mason, Wednesday, 19 August

Partly cloudy. High 88°, low 70°.

Pressure29.94 inHg
Wind7.6 mph SE
Humidity64%
Visibility—
Dew point70°
Thu, 2085° / 71°0.61Rain
85 °Rain

Mason, Thursday, 20 August

Rain. High 85°, low 71°.

Pressure29.85 inHg
Wind7.4 mph S
Humidity69%
Visibility—
Dew point69°
Fri, 2181° / 69°0Overcast
81 °Overcast

Mason, Friday, 21 August

Overcast. High 81°, low 69°.

Pressure29.94 inHg
Wind9.5 mph NE
Humidity79%
Visibility—
Dew point67°
Sat, 2283° / 64°0Overcast
83 °Overcast

Mason, Saturday, 22 August

Overcast. High 83°, low 64°.

Pressure29.94 inHg
Wind15.4 mph NE
Humidity57%
Visibility—
Dew point63°
Sun, 2373° / 58°0.02Light rain
73 °Light rain

Mason, Sunday, 23 August

Light rain. High 73°, low 58°.

Pressure30.15 inHg
Wind14.4 mph E
Humidity61%
Visibility—
Dew point54°

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.