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As of 11:39 CST

Weather in Mason City, IL

71°Current weather

Mason City, Tuesday, 3 November, 11:39

Overcast. Feels like 72°. High 71°, low 64°.

Pressure29.83 inHg
Wind12 mph SE
Humidity100%
Visibility1.5 mi
Dew point71°
Wed, 0462° / 56°0.19Rain
62 °Rain

Mason City, Wednesday, 4 November

Rain. High 62°, low 56°.

Pressure29.71 inHg
Wind14.7 mph SW
Humidity72%
Visibility6.2 mi
Dew point50°
Thu, 0559° / 49°0Overcast
59 °Overcast

Mason City, Thursday, 5 November

Overcast. High 59°, low 49°.

Pressure29.83 inHg
Wind14.4 mph W
Humidity55%
Visibility6.2 mi
Dew point43°
Fri, 0653° / 47°0Overcast
53 °Overcast

Mason City, Friday, 6 November

Overcast. High 53°, low 47°.

Pressure30.09 inHg
Wind9.2 mph N
Humidity60%
Visibility6.2 mi
Dew point39°
Sat, 0752° / 38°0Mostly clear
52 °Mostly clear

Mason City, Saturday, 7 November

Mostly clear. High 52°, low 38°.

Pressure30.21 inHg
Wind5.2 mph W
Humidity54%
Visibility—
Dew point33°
Sun, 0864° / 41°0Clear
64 °Clear

Mason City, Sunday, 8 November

Clear. High 64°, low 41°.

Pressure30.12 inHg
Wind7.5 mph W
Humidity59%
Visibility—
Dew point43°
Mon, 0970° / 47°0Mostly clear
70 °Mostly clear

Mason City, Monday, 9 November

Mostly clear. High 70°, low 47°.

Pressure30.06 inHg
Wind11.5 mph SW
Humidity43%
Visibility—
Dew point41°
Tue, 1062° / 51°0Overcast
62 °Overcast

Mason City, Tuesday, 10 November

Overcast. High 62°, low 51°.

Pressure30.06 inHg
Wind11.4 mph SW
Humidity53%
Visibility—
Dew point44°
Wed, 1159° / 46°0Overcast
59 °Overcast

Mason City, Wednesday, 11 November

Overcast. High 59°, low 46°.

Pressure30.15 inHg
Wind9.4 mph N
Humidity29%
Visibility—
Dew point25°
Thu, 1253° / 38°0Clear
53 °Clear

Mason City, Thursday, 12 November

Clear. High 53°, low 38°.

Pressure30.24 inHg
Wind9.6 mph N
Humidity44%
Visibility—
Dew point29°
Fri, 1353° / 36°0Clear
53 °Clear

Mason City, Friday, 13 November

Clear. High 53°, low 36°.

Pressure30.24 inHg
Wind5.6 mph E
Humidity43%
Visibility—
Dew point27°
Sat, 1455° / 36°0Clear
55 °Clear

Mason City, Saturday, 14 November

Clear. High 55°, low 36°.

Pressure30.27 inHg
Wind5.8 mph SE
Humidity33%
Visibility—
Dew point23°
Sun, 1558° / 37°0Clear
58 °Clear

Mason City, Sunday, 15 November

Clear. High 58°, low 37°.

Pressure30.09 inHg
Wind9.2 mph SE
Humidity31%
Visibility—
Dew point23°
Mon, 1661° / 41°0.06Light rain
61 °Light rain

Mason City, Monday, 16 November

Light rain. High 61°, low 41°.

Pressure29.77 inHg
Wind15.9 mph SE
Humidity43%
Visibility—
Dew point33°
Tue, 1756° / 50°0.06Light rain
56 °Light rain

Mason City, Tuesday, 17 November

Light rain. High 56°, low 50°.

Pressure29.65 inHg
Wind10.5 mph SE
Humidity72%
Visibility—
Dew point46°
Wed, 1859° / 46°0.23Rain
59 °Rain

Mason City, Wednesday, 18 November

Rain. High 59°, low 46°.

Pressure29.91 inHg
Wind13.4 mph E
Humidity56%
Visibility—
Dew point42°

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 City, 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 City, 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.