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Current weather in Mason City is overcast clouds.

Where can I find the hourly weather forecast for Mason City?

This page shows hourly weather forecast for Mason City, including temperature, wind, precipitation, humidity and cloud cover.

Is the weather forecast for Mason City updated regularly?

Weather data for Mason City is updated regularly with the latest available observations and forecasts.

Now · 9:39 AM

Mason City Weather & Hourly Forecast

United States · Iowa · 50401

82°F

Overcast

Feels like: 88°F

💧 Humidity 73% 🌡 Pressure 29.88 inHg 💨 Wind 7 mph 👁 Visibility 6.2 mi ☁ Clouds 100% ☀️ UV index 1.0 · Low 🌅 Sunrise 6:40 AM 🌇 Sunset 7:43 PM

Hourly Forecast for Mason City

Today

10:00 AM

Overcast

82° 💧 None 💨 7 mph H 73%29.88 inHg

1:00 PM

Mostly cloudy

85° 💧 None 💨 5 mph H 58%29.85 inHg

4:00 PM

Sunny

96° 💧 None 💨 6 mph H 35%29.80 inHg

7:00 PM

Partly cloudy

84° 💧 None 💨 8 mph H 52%29.80 inHg

10:00 PM

Clear night

80° 💧 None 💨 5 mph H 72%29.88 inHg

Tomorrow

1:00 AM

Mostly cloudy night

74° 💧 0.04 in 💨 10 mph H 70%29.88 inHg

4:00 AM

Mostly cloudy night

71° 💧 None 💨 9 mph H 93%29.91 inHg

7:00 AM

Partly cloudy

70° 💧 None 💨 7 mph H 96%29.91 inHg

10:00 AM

Sunny

70° 💧 None 💨 9 mph H 75%29.97 inHg

1:00 PM

Sunny

84° 💧 None 💨 9 mph H 44%29.94 inHg

4:00 PM

Sunny

92° 💧 0.00 in 💨 10 mph H 32%29.91 inHg

7:00 PM

Sunny

80° 💧 None 💨 10 mph H 50%29.91 inHg

10:00 PM

Clear night

73° 💧 None 💨 8 mph H 89%29.97 inHg

Sunday

1:00 AM

Partly cloudy night

69° 💧 0.01 in 💨 10 mph H 92%30.00 inHg

4:00 AM

Light rain

67° 💧 0.05 in 💨 9 mph H 97%30.03 inHg

7:00 AM

Light rain

64° 💧 0.01 in 💨 6 mph H 98%30.06 inHg

Today

10:00 AM

Overcast

82° 💧 None 💨 7 mph H 73%29.88 inHg

11:00 AM

Overcast

82° 💧 None 💨 6 mph H 71%29.88 inHg

12:00 PM

Overcast

82° 💧 None 💨 5 mph H 66%29.88 inHg

1:00 PM

Mostly cloudy

85° 💧 None 💨 5 mph H 58%29.85 inHg

2:00 PM

Mostly sunny

84° 💧 None 💨 5 mph H 50%29.83 inHg

3:00 PM

Sunny

93° 💧 None 💨 6 mph H 36%29.80 inHg

4:00 PM

Sunny

96° 💧 None 💨 6 mph H 35%29.80 inHg

5:00 PM

Sunny

92° 💧 None 💨 4 mph H 35%29.80 inHg

6:00 PM

Mostly sunny

90° 💧 None 💨 2 mph H 42%29.80 inHg

7:00 PM

Partly cloudy

84° 💧 None 💨 8 mph H 52%29.80 inHg

8:00 PM

Mostly clear night

83° 💧 None 💨 10 mph H 62%29.83 inHg

9:00 PM

Clear night

82° 💧 None 💨 9 mph H 69%29.85 inHg

10:00 PM

Clear night

80° 💧 None 💨 5 mph H 72%29.88 inHg

11:00 PM

Partly cloudy night

78° 💧 None 💨 8 mph H 72%29.88 inHg

Tomorrow

12:00 AM

Partly cloudy night

76° 💧 None 💨 9 mph H 73%29.88 inHg

1:00 AM

Mostly cloudy night

74° 💧 None 💨 10 mph H 70%29.88 inHg

2:00 AM

Light rain

72° 💧 0.03 in 💨 3 mph H 83%29.91 inHg

3:00 AM

Light rain

73° 💧 0.01 in 💨 8 mph H 88%29.91 inHg

4:00 AM

Mostly cloudy night

71° 💧 None 💨 9 mph H 93%29.91 inHg

5:00 AM

Partly cloudy night

70° 💧 None 💨 10 mph H 95%29.91 inHg

6:00 AM

Partly cloudy night

71° 💧 None 💨 9 mph H 96%29.91 inHg

7:00 AM

Partly cloudy

70° 💧 None 💨 7 mph H 96%29.91 inHg

8:00 AM

Sunny

70° 💧 None 💨 6 mph H 93%29.94 inHg

9:00 AM

Sunny

71° 💧 None 💨 8 mph H 86%29.94 inHg

10:00 AM

Sunny

70° 💧 None 💨 9 mph H 75%29.97 inHg

11:00 AM

Sunny

75° 💧 None 💨 9 mph H 62%29.97 inHg

12:00 PM

Sunny

78° 💧 None 💨 9 mph H 53%29.97 inHg

1:00 PM

Sunny

84° 💧 None 💨 9 mph H 44%29.94 inHg

2:00 PM

Sunny

82° 💧 None 💨 10 mph H 38%29.91 inHg

3:00 PM

Sunny

89° 💧 None 💨 10 mph H 33%29.91 inHg

4:00 PM

Sunny

92° 💧 None 💨 10 mph H 32%29.91 inHg

5:00 PM

Light rain

88° 💧 0.00 in 💨 10 mph H 34%29.91 inHg

6:00 PM

Sunny

85° 💧 None 💨 11 mph H 38%29.88 inHg

7:00 PM

Sunny

80° 💧 None 💨 10 mph H 50%29.91 inHg

8:00 PM

Clear night

77° 💧 None 💨 9 mph H 64%29.91 inHg

9:00 PM

Clear night

75° 💧 None 💨 8 mph H 79%29.94 inHg

10:00 PM

Clear night

73° 💧 None 💨 8 mph H 89%29.97 inHg

11:00 PM

Clear night

71° 💧 None 💨 9 mph H 92%29.97 inHg

Sunday

12:00 AM

Mostly clear night

71° 💧 None 💨 9 mph H 91%30.00 inHg

1:00 AM

Partly cloudy night

69° 💧 None 💨 10 mph H 92%30.00 inHg

2:00 AM

Light rain

69° 💧 0.01 in 💨 10 mph H 93%30.00 inHg

3:00 AM

Light rain

67° 💧 0.00 in 💨 10 mph H 96%30.03 inHg

4:00 AM

Light rain

67° 💧 0.01 in 💨 9 mph H 97%30.03 inHg

5:00 AM

Light rain

66° 💧 0.03 in 💨 7 mph H 98%30.03 inHg

6:00 AM

Light rain

65° 💧 0.01 in 💨 9 mph H 98%30.03 inHg

7:00 AM

Light rain

64° 💧 0.00 in 💨 6 mph H 98%30.06 inHg

8:00 AM

Light rain

66° 💧 0.01 in 💨 10 mph H 96%30.06 inHg

9:00 AM

Mostly cloudy

68° 💧 None 💨 12 mph H 88%30.06 inHg

10:00 AM

Overcast

72° 💧 None 💨 13 mph H 73%30.06 inHg

11:00 AM

Overcast

78° 💧 None 💨 14 mph H 53%30.03 inHg

12:00 PM

Overcast

82° 💧 None 💨 16 mph H 45%30.06 inHg

1:00 PM

Overcast

84° 💧 None 💨 13 mph H 43%30.03 inHg

2:00 PM

Overcast

86° 💧 None 💨 14 mph H 38%30.00 inHg

3:00 PM

Overcast

87° 💧 None 💨 14 mph H 38%30.00 inHg

4:00 PM

Overcast

86° 💧 None 💨 14 mph H 40%29.97 inHg

5:00 PM

Overcast

84° 💧 None 💨 13 mph H 44%29.97 inHg

6:00 PM

Light rain

79° 💧 0.01 in 💨 10 mph H 59%30.00 inHg

7:00 PM

Light rain

74° 💧 0.02 in 💨 8 mph H 77%30.03 inHg

8:00 PM

Light rain

71° 💧 0.04 in 💨 5 mph H 85%30.03 inHg

9:00 PM

Moderate rain

70° 💧 0.05 in 💨 7 mph H 88%30.03 inHg

10:00 PM

Light rain

70° 💧 0.01 in 💨 13 mph H 88%29.97 inHg

11:00 PM

Overcast night

70° 💧 None 💨 13 mph H 87%30.00 inHg

Monday

12:00 AM

Light rain

68° 💧 0.01 in 💨 12 mph H 90%30.03 inHg

1:00 AM

Overcast night

68° 💧 None 💨 13 mph H 90%30.03 inHg

2:00 AM

Overcast night

67° 💧 None 💨 13 mph H 91%30.03 inHg

3:00 AM

Overcast night

66° 💧 None 💨 14 mph H 89%30.03 inHg

4:00 AM

Overcast night

66° 💧 None 💨 13 mph H 86%30.03 inHg

5:00 AM

Overcast night

65° 💧 None 💨 12 mph H 83%30.03 inHg

6:00 AM

Overcast night

64° 💧 None 💨 13 mph H 81%30.03 inHg

7:00 AM

Overcast

63° 💧 None 💨 11 mph H 82%30.03 inHg

8:00 AM

Overcast

65° 💧 None 💨 13 mph H 78%30.06 inHg

9:00 AM

Overcast

69° 💧 None 💨 16 mph H 67%30.06 inHg

10:00 AM

Overcast

71° 💧 None 💨 15 mph H 61%30.03 inHg

11:00 AM

Overcast

77° 💧 None 💨 17 mph H 49%30.03 inHg

12:00 PM

Overcast

80° 💧 None 💨 18 mph H 46%30.00 inHg

1:00 PM

Overcast

82° 💧 None 💨 18 mph H 44%30.00 inHg

2:00 PM

Overcast

83° 💧 None 💨 17 mph H 43%29.97 inHg

3:00 PM

Overcast

84° 💧 None 💨 17 mph H 43%29.94 inHg

4:00 PM

Overcast

80° 💧 None 💨 15 mph H 48%29.94 inHg

5:00 PM

Overcast

83° 💧 None 💨 17 mph H 43%29.94 inHg

6:00 PM

Overcast

80° 💧 None 💨 17 mph H 45%29.94 inHg

7:00 PM

Overcast

79° 💧 None 💨 16 mph H 44%29.94 inHg

8:00 PM

Overcast night

77° 💧 None 💨 15 mph H 46%29.94 inHg

9:00 PM

Overcast night

75° 💧 None 💨 15 mph H 50%29.94 inHg

10:00 PM

Mostly cloudy night

73° 💧 None 💨 16 mph H 53%29.94 inHg

11:00 PM

Overcast night

73° 💧 None 💨 16 mph H 53%29.94 inHg

Tuesday

12:00 AM

Overcast night

72° 💧 None 💨 16 mph H 54%29.94 inHg

1:00 AM

Light rain

69° 💧 0.01 in 💨 14 mph H 64%29.94 inHg

2:00 AM

Light rain

65° 💧 0.02 in 💨 15 mph H 81%29.94 inHg

3:00 AM

Light rain

65° 💧 0.00 in 💨 16 mph H 80%29.91 inHg

4:00 AM

Overcast night

64° 💧 None 💨 15 mph H 78%29.91 inHg

5:00 AM

Overcast night

64° 💧 None 💨 14 mph H 72%29.91 inHg

6:00 AM

Overcast night

65° 💧 None 💨 14 mph H 68%29.88 inHg

7:00 AM

Overcast

66° 💧 None 💨 14 mph H 59%29.88 inHg

8:00 AM

Overcast

71° 💧 None 💨 15 mph H 48%29.88 inHg

9:00 AM

Overcast

76° 💧 None 💨 15 mph H 44%29.88 inHg

In Mason City and, more broadly, across the state of Iowa: This morning will start with mostly sunny skies and just a few clouds drifting through. Temperatures will be very hot, ranging from the low 70s to the mid-100s by midday. Expect the heat to intensify as the day progresses, with afternoon temperatures reaching up to 104 degrees Fahrenheit. Winds will be moderate from the southwest at around 10 mph, with gusts up to 18 mph, providing some relief but not enough to significantly cool the air. No precipitation is expected today, so it will remain dry throughout. It’s important to stay hydrated and take precautions against the heat, especially during the hottest part of the day. Keep an eye on the weather if you plan outdoor activities, as conditions can become quite intense.

15-Day Weather Outlook for Mason City

TomorrowTomorrow

Light rain 92°/70° 💧 0.04 in 💨 11 mph

Sunday, Sep 6Sun Sep 6

Moderate rain 87°/64° 💧 0.20 in 💨 16 mph

Monday, Sep 7Mon Sep 7

Light rain 82°/63° 💧 0.01 in 💨 18 mph

Tuesday, Sep 8Tue Sep 8

Light rain 93°/64° 💧 0.09 in 💨 17 mph

Wednesday, Sep 9Wed Sep 9

Overcast 82°/62° 💧 None 💨 18 mph

Thursday, Sep 10Thu Sep 10

Light rain 80°/56° 💧 0.01 in 💨 7 mph

Friday, Sep 11Fri Sep 11

Light rain 74°/58° 💧 0.01 in 💨 15 mph

Saturday, Sep 12Sat Sep 12

Overcast 71°/57° 💧 None 💨 10 mph

Sunday, Sep 13Sun Sep 13

Light rain 69°/51° 💧 0.01 in 💨 17 mph

Monday, Sep 14Mon Sep 14

Sunny 73°/42° 💧 None 💨 9 mph

Tuesday, Sep 15Tue Sep 15

Light rain 67°/52° 💧 0.12 in 💨 19 mph

Wednesday, Sep 16Wed Sep 16

Sunny 85°/57° 💧 None 💨 17 mph

Thursday, Sep 17Thu Sep 17

Mostly cloudy 72°/52° 💧 None 💨 17 mph

Friday, Sep 18Fri Sep 18

Sunny 69°/41° 💧 None 💨 13 mph

Saturday, Sep 19Sat Sep 19

Sunny 74°/41° 💧 None 💨 11 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Mason City

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Mason City

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 10:00 AM

PM2.5 Fine particles Good 3,0µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 3,4µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Good 32,6µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 2,6µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is favorable for outdoor activities.

UV & HEALTH

UV, Sun & Health Outlook in Mason City

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 5,4Moderate 😊Good

Tomorrow UV 6,9High 🙂Fair

Sunday UV 7,1High 🙂Fair

Monday UV 7,0High 🙂Fair

Tuesday UV 7,0High 🙂Fair

Wednesday UV 7,0High —Unavailable

Thursday UV 5,0Moderate —Unavailable

Hourly UV index today

10:00 AMUV 1,0 11:00 AMUV 3,0 12:00 PMUV 5,2 1:00 PMUV 5,0 2:00 PMUV 5,4 3:00 PMUV 5,3 4:00 PMUV 3,6 5:00 PMUV 1,9 6:00 PMUV 0,7 7:00 PMUV 0,1

Today's weather health advice Open today's recommendations.

Moderate UV risk

Sunglasses and sun protection are recommended for prolonged exposure.

Good air quality

Air quality is good and outdoor activities can be enjoyed normally.

Stay hydrated

Drink water regularly, especially during physical activity or prolonged sun exposure.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Mason City

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

Internal PR simulation: 4.47 Population: 27,050

DISCOVER WEATHER NEARBY Weather in other cities

Explore current conditions and forecasts for other locations.

Forecast data for Mason City were last refreshed today at 9:39 AM. The current forecast period extends through 06/09/2026 at 7:00 AM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.