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As of 03:25 CDT

Weather in Mason City, IA

64°Current weather

Mason City, Sunday, 9 August, 03:25

Partly cloudy. Feels like 64°. High 84°, low 64°.

Pressure29.91 inHg
Wind6.3 mph S
Humidity95%
Visibility6.2 mi
Dew point62°
Mon, 1082° / 69°0.06Light rain
82 °Light rain

Mason City, Monday, 10 August

Light rain. High 82°, low 69°.

Pressure29.88 inHg
Wind11.5 mph SE
Humidity73%
Visibility6.2 mi
Dew point68°
Tue, 1185° / 69°0.06Light rain
85 °Light rain

Mason City, Tuesday, 11 August

Light rain. High 85°, low 69°.

Pressure29.80 inHg
Wind5.2 mph N
Humidity71%
Visibility6.2 mi
Dew point71°
Wed, 1280° / 64°0Partly cloudy
80 °Partly cloudy

Mason City, Wednesday, 12 August

Partly cloudy. High 80°, low 64°.

Pressure29.88 inHg
Wind7.7 mph E
Humidity59%
Visibility6.2 mi
Dew point63°
Thu, 1365° / 59°0.13Light rain
65 °Light rain

Mason City, Thursday, 13 August

Light rain. High 65°, low 59°.

Pressure30.06 inHg
Wind9.6 mph E
Humidity88%
Visibility—
Dew point59°
Fri, 1473° / 55°0Overcast
73 °Overcast

Mason City, Friday, 14 August

Overcast. High 73°, low 55°.

Pressure30.15 inHg
Wind11.7 mph E
Humidity58%
Visibility—
Dew point55°
Sat, 1566° / 59°0.01Light rain
66 °Light rain

Mason City, Saturday, 15 August

Light rain. High 66°, low 59°.

Pressure30.18 inHg
Wind12.3 mph SE
Humidity77%
Visibility—
Dew point58°
Sun, 1681° / 62°0Overcast
81 °Overcast

Mason City, Sunday, 16 August

Overcast. High 81°, low 62°.

Pressure30.09 inHg
Wind8.2 mph NE
Humidity69%
Visibility—
Dew point65°
Mon, 1780° / 58°0Overcast
80 °Overcast

Mason City, Monday, 17 August

Overcast. High 80°, low 58°.

Pressure30.09 inHg
Wind8.4 mph SE
Humidity57%
Visibility—
Dew point59°
Tue, 1886° / 63°0.02Light rain
86 °Light rain

Mason City, Tuesday, 18 August

Light rain. High 86°, low 63°.

Pressure29.91 inHg
Wind14 mph S
Humidity71%
Visibility—
Dew point69°
Wed, 1988° / 68°0Overcast
88 °Overcast

Mason City, Wednesday, 19 August

Overcast. High 88°, low 68°.

Pressure29.80 inHg
Wind10.7 mph SE
Humidity64%
Visibility—
Dew point70°
Thu, 2089° / 71°0.01Light rain
89 °Light rain

Mason City, Thursday, 20 August

Light rain. High 89°, low 71°.

Pressure29.80 inHg
Wind12 mph N
Humidity56%
Visibility—
Dew point69°
Fri, 2181° / 64°0Overcast
81 °Overcast

Mason City, Friday, 21 August

Overcast. High 81°, low 64°.

Pressure29.97 inHg
Wind9.2 mph E
Humidity60%
Visibility—
Dew point62°
Sat, 22100° / 68°0Overcast
100 °Overcast

Mason City, Saturday, 22 August

Overcast. High 100°, low 68°.

Pressure29.77 inHg
Wind17.8 mph SE
Humidity59%
Visibility—
Dew point67°
Sun, 2383° / 70°0.13Rain
83 °Rain

Mason City, Sunday, 23 August

Rain. High 83°, low 70°.

Pressure29.85 inHg
Wind12 mph NE
Humidity66%
Visibility—
Dew point69°
Mon, 2476° / 64°0.19Rain
76 °Rain

Mason City, Monday, 24 August

Rain. High 76°, low 64°.

Pressure30.03 inHg
Wind10.8 mph E
Humidity87%
Visibility—
Dew point68°

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, IA 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, IA 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.