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Observed 11:35 AM CDT at KMCW

Mason City, IA weather

Sunny and 72°22°, 20°11° warmer than a typical Oct 24.

Today: low 50°10° (likely 50°10° to 57°14°), high 76°24° (likely 74°23° to 76°24°).

Forecasts agree

Now 72°22°

Sunny

Wind
9 mph14 km/hgusts 27 mph43 km/h
From the south. 35–14 mph23 km/h through 12 AM
Dew point
48°9°
Comfortable
UV index
3Moderate
Moderate until 3 PM
Air quality
55Moderate
Main pollutant: PM2.5 (fine particles)
Pressure
30.21 inHg1023 hPa
Steady over the last 3 h

Next 2 hours

No precipitation expected in the next 2 hours.

Next 48 hours

2°1° warmer than this time yesterday (65°18° then, 67°19° now)

Good hours for
  • Gusts to 27 mph43 km/h until 1 PM
  • High 76°24° today at 3 PM
  • Low 50°10° tomorrow at 8 AM
  • Above 60°16° tomorrow by 11 AM
  1. This afternoonUp to 76°24° by 3 PM · gusts to 27 mph43 km/h · Partly cloudy
  2. TonightDown to 51°11° by 5 AM · Mostly cloudy
  3. Tomorrow morningUp to 60°16° by 11 AM · Mostly cloudy
  4. Tomorrow afternoonNear 64°18° · Mostly cloudy
  5. Tomorrow nightDown to 46°8° by 5 AM · Mostly cloudy
  6. Monday morningUp to 54°12° by 11 AM · rain chance 20% · Cloudy
Hourly forecast, next 48 hours, in the place's local time
HourConditionsTemperatureFeels likePrecipitationWindHumidityCloud coverUV index
Sat 12pSunny70°21° (likely 69°21° to 71°22°)70°21°0%9 mph14 km/h from S, gusts 27 mph43 km/h49%5%3
Sat 1pSunny73°23° (likely 71°22° to 73°23°)73°23°0%13 mph21 km/h from S, gusts 25 mph40 km/h44%15%3
Sat 2pSunny75°24° (likely 73°23° to 75°24°)75°24°0%14 mph23 km/h from S, gusts 22 mph35 km/h40%22%3
Sat 3pSunny76°24° (likely 74°23° to 76°24°)76°24°0%13 mph21 km/h from SSW, gusts 20 mph32 km/h39%28%2
Sat 4pMostly sunny76°24° (likely 73°23° to 76°24°)76°24°0%12 mph19 km/h from SSW, gusts 18 mph30 km/h39%37%1
Sat 5pPartly sunny75°24° (likely 71°22° to 75°24°)75°24°0%9 mph14 km/h from SSW, gusts 18 mph29 km/h41%57%0
Sat 6pPartly cloudy71°22° (likely 68°20° to 72°22°)71°22°0%7 mph11 km/h from S, gusts 13 mph21 km/h47%70%0
Sat 7pMostly cloudy67°19° (likely 65°18° to 68°20°)67°19°0%6 mph10 km/h from SW, gusts 8 mph13 km/h54%47%0
Sat 8pCloudy63°17° (likely 63°17° to 68°20°)63°17°0%5 mph8 km/h from WNW, gusts 8 mph13 km/h65%88%0
Sat 9pCloudy61°16° (likely 60°16° to 63°17°)61°16°5%3 mph5 km/h from NNW, gusts 13 mph21 km/h72%90%0
Sat 10pCloudy59°15° (likely 56°13° to 61°16°)59°15°5%3 mph5 km/h from NNW, gusts 14 mph23 km/h78%96%0
Sat 11pCloudy58°14° (likely 55°13° to 59°15°)58°14°5%3 mph5 km/h from NNW, gusts 14 mph22 km/h77%81%0
Sun 12aCloudy56°13° (likely 54°12° to 57°14°)56°13°5%3 mph5 km/h from N, gusts 12 mph19 km/h83%81%0
Sun 1aCloudy55°13° (likely 53°12° to 56°13°)55°13°5%3 mph5 km/h from N, gusts 12 mph20 km/h86%81%0
Sun 2aCloudy55°13° (likely 52°11° to 55°13°)55°13°5%3 mph5 km/h from N, gusts 12 mph19 km/h83%82%0
Sun 3aCloudy54°12° (likely 52°11° to 54°12°)54°12°5%3 mph5 km/h from N, gusts 14 mph22 km/h83%81%0
Sun 4aCloudy53°12° (likely 51°11° to 53°12°)53°12°5%3 mph5 km/h from N, gusts 14 mph22 km/h86%78%0
Sun 5aCloudy51°11° (likely 51°11° to 53°12°)51°11°5%3 mph5 km/h from N, gusts 13 mph20 km/h89%80%0
Sun 6aCloudy51°11° (likely 50°10° to 52°11°)51°11°5%3 mph5 km/h from N, gusts 13 mph21 km/h89%86%0
Sun 7aCloudy51°11° (likely 49°9° to 52°11°)51°11°5%3 mph5 km/h from N, gusts 12 mph20 km/h86%89%0
Sun 8aCloudy50°10° (likely 49°9° to 52°11°)48°9°5%5 mph8 km/h from N, gusts 13 mph20 km/h89%81%0
Sun 9aCloudy53°12° (likely 51°11° to 54°12°)53°12°0%5 mph8 km/h from NNE, gusts 13 mph22 km/h80%74%0
Sun 10aCloudy57°14° (likely 52°11° to 57°14°)57°14°0%6 mph10 km/h from NNE, gusts 13 mph21 km/h69%73%1
Sun 11aCloudy60°16° (likely 54°12° to 60°16°)60°16°0%6 mph10 km/h from NNE, gusts 13 mph20 km/h62%77%2
Sun 12pCloudy63°17° (likely 56°13° to 63°17°)63°17°0%5 mph8 km/h from NNE, gusts 12 mph20 km/h56%70%3
Sun 1pCloudy64°18° (likely 58°14° to 66°19°)64°18°0%5 mph8 km/h from NNE, gusts 12 mph19 km/h54%70%3
Sun 2pCloudy65°18° (likely 60°16° to 68°20°)65°18°0%6 mph10 km/h from NNE, gusts 11 mph18 km/h50%73%3
Sun 3pCloudy65°18° (likely 60°16° to 69°21°)65°18°0%6 mph10 km/h from NNE, gusts 10 mph17 km/h48%75%3
Sun 4pCloudy66°19° (likely 60°16° to 68°20°)66°19°0%6 mph10 km/h from NNE, gusts 13 mph21 km/h47%79%2
Sun 5pCloudy64°18° (likely 58°14° to 67°19°)64°18°0%7 mph11 km/h from NNE, gusts 14 mph23 km/h48%78%1
Sun 6pCloudy62°17° (likely 56°13° to 63°17°)62°17°0%7 mph11 km/h from NNE, gusts 17 mph27 km/h50%76%0
Sun 7pCloudy59°15° (likely 53°12° to 60°16°)59°15°0%7 mph11 km/h from NNE, gusts 18 mph29 km/h51%75%0
Sun 8pCloudy54°12° (likely 52°11° to 57°14°)54°12°0%7 mph11 km/h from NNE, gusts 19 mph30 km/h59%77%0
Sun 9pCloudy52°11° (likely 51°11° to 55°13°)52°11°0%7 mph11 km/h from NNE, gusts 17 mph28 km/h59%77%0
Sun 10pCloudy51°11° (likely 49°9° to 53°12°)51°11°0%6 mph10 km/h from NNE, gusts 18 mph29 km/h59%80%0
Sun 11pCloudy50°10° (likely 48°9° to 52°11°)48°9°0%6 mph10 km/h from NNE, gusts 17 mph28 km/h61%76%0
Mon 12aCloudy50°10° (likely 48°9° to 51°11°)48°9°0%6 mph10 km/h from NNE, gusts 18 mph28 km/h58%82%0
Mon 1aCloudy49°9° (likely 47°8° to 51°11°)47°8°5%6 mph10 km/h from NNE, gusts 20 mph32 km/h56%88%0
Mon 2aCloudy48°9° (likely 47°8° to 50°10°)45°7°5%6 mph10 km/h from NNE, gusts 19 mph31 km/h58%85%0
Mon 3aCloudy48°9° (likely 47°8° to 50°10°)45°7°5%6 mph10 km/h from NE, gusts 18 mph29 km/h58%82%0
Mon 4aCloudy47°8° (likely 47°8° to 50°10°)44°7°5%6 mph10 km/h from NE, gusts 20 mph32 km/h60%96%0
Mon 5aCloudy46°8° (likely 46°8° to 50°10°)43°6°5%6 mph10 km/h from NE, gusts 20 mph32 km/h63%97%0
Mon 6aCloudy45°7° (likely 45°7° to 51°11°)41°5°5%7 mph11 km/h from NE, gusts 21 mph33 km/h65%98%0
Mon 7aCloudy44°7° (likely 44°7° to 51°11°)40°4°20%7 mph11 km/h from NE, gusts 20 mph32 km/h68%99%0
Mon 8aCloudy46°8° (likely 46°8° to 52°11°)42°6°20%7 mph11 km/h from ENE, gusts 17 mph28 km/h68%95%0
Mon 9aCloudy49°9° (likely 49°9° to 53°12°)46°8°20%7 mph11 km/h from ENE, gusts 18 mph28 km/h66%94%0
Mon 10aCloudy52°11° (likely 50°10° to 55°13°)52°11°20%7 mph11 km/h from ENE, gusts 18 mph28 km/h63%99%1
Mon 11aCloudy54°12° (likely 52°11° to 57°14°)54°12°20%7 mph11 km/h from ENE, gusts 19 mph31 km/h61%96%1

Days ahead

Shaded: typical range for these dates (1991–2020)
  1. Today, Oct 24. Cloudy. High 76°24°, low 50°10°. Typical 56°13° / 33°1°. Dry. Forecasts agree.
    1. Afternoon

      noon–6 PM

      Sunny, 76°24°

      Dry

    2. Evening

      6 PM–midnight

      Cloudy, 63°17°

      Dry

    3. Overnight

      midnight–6 AM

      Cloudy, 51°11°

      Dry

    Official NWS forecast

    Today: Mostly sunny, with a high near 76. South wind 9 to 14 mph, with gusts as high as 22 mph.

    Tonight: Mostly cloudy, with a low around 50. Northwest wind 3 to 7 mph.

    Forecasts agreeIndependent forecasts are close; the range is narrow.

    High, likely
    74°23°–76°24°
    Low, likely
    50°10°–57°14°
    Typical high / low
    56°13° / 33°1°
    Wind
    15 mph24 km/h, gusts 28 mph45 km/h
    UV peak
    4
  2. Tomorrow, Oct 25. Cloudy. High 66°19°, low 43°6°. Typical 55°13° / 33°1°. Dry. Forecasts differ.
    1. Morning

      6 AM–noon

      Cloudy, 50°10°

      Dry

    2. Afternoon

      noon–6 PM

      Cloudy, 66°19°

      Dry

    3. Evening

      6 PM–midnight

      Cloudy, 54°12°

      Dry

    4. Overnight

      midnight–6 AM

      Cloudy, 46°8°

      Dry

    Official NWS forecast

    Day: Partly sunny. High near 66, with temperatures falling to around 64 in the afternoon. North northeast wind 3 to 7 mph.

    Night: Mostly cloudy. Low around 43, with temperatures rising to around 46 overnight. North northeast wind around 7 mph.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    60°16°–69°21°
    Low, likely
    43°6°–51°11°
    Typical high / low
    55°13° / 33°1°
    Wind
    11 mph18 km/h, gusts 22 mph35 km/h
    UV peak
    3
  3. Monday, Oct 26. Showers. High 59°15°, low 43°6°. Typical 54°12° / 33°1°. Rain 0.01 in0.3 mm, 20% chance. Mostly agree.
    1. Morning

      6 AM–noon

      Cloudy, 46°8°

      Dry

    2. Afternoon

      noon–6 PM

      Cloudy, 62°17°

      Dry

    3. Evening

      6 PM–midnight

      Cloudy, 57°14°

      Dry

    4. Overnight

      midnight–6 AM

      Cloudy, 55°13°

      Dry

    Official NWS forecast

    Day: A slight chance of rain showers between 7am and 1pm. Mostly cloudy, with a high near 59. East northeast wind around 8 mph. Chance of precipitation is 20%.

    Night: A chance of rain showers after 7pm. Mostly cloudy, with a low around 43. Chance of precipitation is 30%.

    Mostly agreeIndependent forecasts are fairly close; small surprises are possible.

    High, likely
    59°15°–64°18°
    Low, likely
    43°6°–50°10°
    Typical high / low
    54°12° / 33°1°
    Wind
    13 mph22 km/h, gusts 28 mph44 km/h
    UV peak
    3
  4. Tuesday, Oct 27. Showers. High 65°18°, low 49°9°. Typical 54°12° / 32°0°. Rain 0.04 in1 mm, 30% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Cloudy, 55°13°

      Dry

    2. Afternoon

      noon–6 PM

      Cloudy, 67°19°

      Dry

    3. Evening

      6 PM–midnight

      Cloudy, 62°17°

      Dry

    4. Overnight

      midnight–6 AM

      Cloudy, 59°15°

      30% chance

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: A chance of rain showers before 1pm. Mostly cloudy, with a high near 65. Chance of precipitation is 30%.

    Night: A chance of rain showers after 7pm. Mostly cloudy, with a low around 49. Chance of precipitation is 40%.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    64°18°–70°21°
    Low, likely
    49°9°–56°13°
    Typical high / low
    54°12° / 32°0°
    Wind
    15 mph24 km/h, gusts 32 mph52 km/h
    UV peak
    2
  5. Wednesday, Oct 28. Showers. High 67°19°, low 42°6°. Typical 53°12° / 32°0°. Rain 0.13 in3.3 mm, 40% chance. Mostly agree.
    1. Morning

      6 AM–noon

      Cloudy, 58°15°

      20% chance

    2. Afternoon

      noon–6 PM

      Drizzle, 69°21°

      20% chance · 0.03 in0.8 mm

    3. Evening

      6 PM–midnight

      Cloudy, 63°17°

      Dry

    4. Overnight

      midnight–6 AM

      Cloudy, 59°15°

      20% chance · 0.11 in2.8 mm

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: A chance of rain showers. Partly sunny, with a high near 67. Chance of precipitation is 40%.

    Night: A slight chance of rain showers. Partly cloudy, with a low around 42.

    Mostly agreeIndependent forecasts are fairly close; small surprises are possible.

    High, likely
    67°19°–72°22°
    Low, likely
    42°6°–57°14°
    Typical high / low
    53°12° / 32°0°
    Wind
    15 mph24 km/h, gusts 37 mph60 km/h
    UV peak
    4
  6. Thursday, Oct 29. Showers. High 64°18°, low 43°6°. Typical 53°12° / 31°−1°. Rain 0.13 in3.3 mm, 20% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Mostly sunny, 57°14°

      Dry

    2. Afternoon

      noon–6 PM

      Cloudy, 68°20°

      Dry

    3. Evening

      6 PM–midnight

      Clear, 59°15°

      Dry

    4. Overnight

      midnight–6 AM

      Mostly clear, 53°12°

      30% chance · 0.02 in0.4 mm

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: A slight chance of rain showers. Mostly sunny, with a high near 64.

    Night: A chance of rain showers. Partly cloudy, with a low around 43. Chance of precipitation is 30%.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    64°18°–71°22°
    Low, likely
    43°6°–55°13°
    Typical high / low
    53°12° / 31°−1°
    Wind
    12 mph19 km/h, gusts 34 mph54 km/h
    UV peak
    3
  7. Friday, Oct 30. Showers. High 63°17°, low 43°6°. Typical 52°11° / 31°−1°. Rain 0.14 in3.6 mm, 40% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Cloudy, 55°13°

      30% chance · 0.05 in1.1 mm

    2. Afternoon

      noon–6 PM

      Cloudy, 67°20°

      20% chance · 0.01 in0.3 mm

    3. Evening

      6 PM–midnight

      Drizzle, 63°17°

      30% chance · 0.06 in1.4 mm

    4. Overnight

      midnight–6 AM

      Drizzle, 59°15°

      50% chance · 0.06 in1.5 mm

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: A chance of rain showers. Partly sunny, with a high near 63. Chance of precipitation is 40%.

    Night: A chance of rain showers. Mostly cloudy, with a low around 43.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    62°17°–72°22°
    Low, likely
    43°6°–61°16°
    Typical high / low
    52°11° / 31°−1°
    Wind
    15 mph24 km/h, gusts 32 mph51 km/h
    UV peak
    2
  8. Saturday, Oct 31. Drizzle. High 66°19°, low 57°14°. Typical 52°11° / 31°−1°. Rain 0.23 in5.8 mm, 60% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Drizzle, 60°15°

      60% chance · 0.03 in0.6 mm

    2. Afternoon

      noon–6 PM

      Cloudy, 67°19°

      50% chance · 0.01 in0.4 mm

    3. Evening

      6 PM–midnight

      Drizzle, 61°16°

      60% chance · 0.08 in2.1 mm

    4. Overnight

      midnight–6 AM

      Drizzle, 60°15°

      60% chance · 0.04 in0.9 mm

    Hours this far out come from computer models only.

    The National Weather Service writes about seven days ahead; this day is our model forecast only.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    61°16°–72°22°
    Low, likely
    52°11°–64°18°
    Typical high / low
    52°11° / 31°−1°
    Wind
    18 mph29 km/h, gusts 39 mph62 km/h
    UV peak
    1
  9. Sunday, Nov 1. Drizzle. High 62°17°, low 51°11°. Typical 51°11° / 30°−1°. Rain 0.3 in7.6 mm, 60% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Drizzle, 60°15°

      40% chance · 0.06 in1.6 mm

    2. Afternoon

      noon–6 PM

      Drizzle, 61°16°

      30% chance · 0.15 in3.9 mm

    3. Evening

      6 PM–midnight

      Drizzle, 57°14°

      30% chance · 0.06 in1.6 mm

    4. Overnight

      midnight–6 AM

      Drizzle, 51°10°

      20% chance · 0.04 in1.1 mm

    Hours this far out come from computer models only.

    The National Weather Service writes about seven days ahead; this day is our model forecast only.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    55°13°–68°20°
    Low, likely
    46°8°–59°15°
    Typical high / low
    51°11° / 30°−1°
    Wind
    19 mph30 km/h, gusts 30 mph48 km/h
  10. Monday, Nov 2. Drizzle. High 58°14°, low 50°10°. Typical 51°11° / 30°−1°. Rain 0.21 in5.3 mm, 30% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Drizzle, 50°10°

      20% chance · 0.04 in1.1 mm

    2. Afternoon

      noon–6 PM

      Drizzle, 55°13°

      30% chance · 0.03 in0.8 mm

    3. Evening

      6 PM–midnight

      Drizzle, 54°12°

      30% chance · 0.04 in1 mm

    Hours this far out come from computer models only.

    The National Weather Service writes about seven days ahead; this day is our model forecast only.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    54°12°–63°17°
    Low, likely
    43°6°–61°16°
    Typical high / low
    51°11° / 30°−1°
    Wind
    28 mph44 km/h, gusts 44 mph71 km/h
    UV peak
    3

The outlook

  1. Today

    Dry, high 76°, low 50°.

  2. Tomorrow

    Dry, high 66°, low 43°, cooling off.

  3. Monday

    Dry, high 59°, low 43°, cooling off.

  4. Rest of week

    Highs 58–67°; chance of precipitation on Friday, Saturday, Sunday.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (DMX) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue
Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Winnebago River at Mason City

1.3 mi
Below flood stage
Level
5.3 ft
Flow
275 cfs

Reading from Sat 11:15 AM · NWS gauge page

Willow Creek at Mason City US 18 Bus

3.4 mi
Level
85.8 ft

Reading from Sat 10:45 AM · NWS gauge page

Spring Creek near Mason City US 65

4.6 mi
Level
80.8 ft
Flow
17 cfs

Reading from Sat 10:45 AM · NWS gauge page

Clear Lake at Clear Lake

9.4 mi
Level
4.6 ft

Reading from Sat 11 AM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Heating this week

About 89% less heating than a typical week.

This week 18Typical 154

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F
5
h below 17°F
0
h below 5°F
0

47, 17 and 5°F are the test points heat pumps are rated at.

Comfort

Dry air outside (dew point 48°F).

Open the windows?

Today, 1:00 PM–9:00 PM

Good stretch to open the windows.

Is this typical?

Mason City Municipal Airport · official normals 1991–2020 · records 1948–2026

Oct 24, today vs a typical year

Today’s expected high is 20°11° warmer than typical.

Normal high / low
56°13° / 33°1°
Forecast high / low
76°24° / 50°10°
Record high
79°26° in 1963
Record low
15°−9° in 2020

Last 7 days vs normal

On average 9°5° warmer than normal (daily mean temperature).

  1. +6°+3°SunOct 18
  2. +5°+3°MonOct 19
  3. +5°+3°TueOct 20
  4. +12°+7°WedOct 21
  5. +15°+8°ThuOct 22
  6. +14°+8°FriOct 23
  7. —SatOct 24

Mason City weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Sunrise 7:37 AM, sunset 6:15 PM.

Daylight
10 h 38 min
Losing 2 min 44 s a day; shortest Dec 21, 1 h 39 min less
Golden hour
5:36–6:33 PM
Morning 7:19–8:17 AM
Blue hour
6:33–6:44 PM
Morning 7:08–7:19 AM; first light 7:08 AM

Stars tonight? Poor

Clouds most of the night (about 81% cover).

Moon

Waxing gibbous

97% lit · growing

Today
sets 5:50 AM · rises 5:14 PM
Full moon
Oct 25
New moon
Nov 9
Looking west from Mason City. A level horizon.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.