Observed 12:25 AM CDT at KMCW

Portland, IA weather

Partly cloudy and 52°11°, 13°7° warmer than a typical Oct 25, jacket by 6 AM.

Forecasts differ

Now 52°11°

Partly cloudy

Wind: 7 mph11 km/h; From the north-northwest. 58–8 mph13 km/h through 12 PM
Dew point: 46°8°; Comfortable
UV index: 0Low; Moderate 12–4 PM · peak 4
Pressure: 30.31 inHg1026 hPa; Rising slowly · +0.03 inHg+0.9 hPa next 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

10°5° cooler than this time yesterday (61°16° then, 51°11° now)

Good hours for

Low 50°10° today at 8 AM
Above 60°16° today by 11 AM
High 68°20° today at 3 PM
Below 60°16° tonight after 8 PM

TonightDown to 52°11° by 5 AM · Mostly cloudy
This morningUp to 61°16° by 11 AM · Mostly cloudy
This afternoonUp to 68°20° by 3 PM · Mostly cloudy
TonightDown to 47°8° by 5 AM · Mostly cloudy
Tomorrow morningUp to 56°13° by 11 AM · rain chance 20% · Mostly cloudy
Tomorrow afternoonUp to 64°18° by 3 PM · Cloudy
Tomorrow nightDown to 53°12° by 11 PM · rain chance 20% · Cloudy

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sun 12a	Cloudy	57°14° (likely 55°13° to 57°14°)	57°14°	0%	7 mph11 km/h from NNW, gusts 13 mph21 km/h	77%	85%	0
Sun 1a	Mostly cloudy	56°13° (likely 53°12° to 56°13°)	56°13°	0%	7 mph11 km/h from NNW, gusts 12 mph19 km/h	80%	70%	0
Sun 2a	Mostly cloudy	55°13° (likely 53°12° to 55°13°)	55°13°	0%	7 mph11 km/h from N, gusts 11 mph17 km/h	80%	70%	0
Sun 3a	Cloudy	54°12° (likely 52°11° to 54°12°)	54°12°	5%	6 mph10 km/h from N, gusts 10 mph17 km/h	83%	82%	0
Sun 4a	Cloudy	53°12° (likely 51°11° to 53°12°)	53°12°	0%	8 mph13 km/h from N, gusts 11 mph18 km/h	86%	87%	0
Sun 5a	Cloudy	52°11° (likely 51°11° to 52°11°)	52°11°	0%	7 mph11 km/h from N, gusts 11 mph18 km/h	89%	82%	0
Sun 6a	Cloudy	52°11° (likely 51°11° to 52°11°)	52°11°	0%	6 mph10 km/h from N, gusts 11 mph17 km/h	86%	74%	0
Sun 7a	Cloudy	51°11° (likely 50°10° to 52°11°)	51°11°	5%	6 mph10 km/h from N, gusts 10 mph16 km/h	89%	72%	0
Sun 8a	Cloudy	50°10° (likely 50°10° to 52°11°)	48°9°	5%	5 mph8 km/h from N, gusts 10 mph16 km/h	93%	67%	0
Sun 9a	Cloudy	53°12° (likely 51°11° to 53°12°)	53°12°	5%	6 mph10 km/h from NNE, gusts 11 mph18 km/h	83%	61%	0
Sun 10a	Mostly cloudy	57°14° (likely 54°12° to 57°14°)	57°14°	5%	6 mph10 km/h from NNE, gusts 12 mph19 km/h	75%	49%	1
Sun 11a	Cloudy	61°16° (likely 56°13° to 61°16°)	61°16°	5%	6 mph10 km/h from NNE, gusts 11 mph17 km/h	62%	71%	2
Sun 12p	Cloudy	64°18° (likely 58°14° to 64°18°)	64°18°	5%	5 mph8 km/h from NE, gusts 9 mph15 km/h	58%	75%	3
Sun 1p	Cloudy	66°19° (likely 60°16° to 66°19°)	66°19°	5%	5 mph8 km/h from NNE, gusts 9 mph14 km/h	54%	74%	4
Sun 2p	Cloudy	67°19° (likely 62°17° to 67°19°)	67°19°	5%	5 mph8 km/h from NNE, gusts 8 mph13 km/h	52%	76%	4
Sun 3p	Cloudy	68°20° (likely 63°17° to 68°20°)	68°20°	5%	6 mph10 km/h from NNE, gusts 8 mph13 km/h	49%	74%	3
Sun 4p	Cloudy	68°20° (likely 63°17° to 68°20°)	68°20°	5%	7 mph11 km/h from NNE, gusts 9 mph15 km/h	47%	73%	2
Sun 5p	Mostly cloudy	66°19° (likely 61°16° to 66°19°)	66°19°	5%	7 mph11 km/h from NNE, gusts 13 mph22 km/h	48%	65%	1
Sun 6p	Cloudy	64°18° (likely 52°11° to 64°18°)	64°18°	5%	8 mph13 km/h from NNE, gusts 14 mph22 km/h	50%	73%	0
Sun 7p	Cloudy	61°16° (likely 51°11° to 61°16°)	61°16°	5%	8 mph13 km/h from NNE, gusts 15 mph24 km/h	51%	78%	0
Sun 8p	Cloudy	55°13° (likely 50°10° to 56°13°)	55°13°	5%	7 mph11 km/h from NNE, gusts 16 mph26 km/h	59%	79%	0
Sun 9p	Cloudy	54°12° (likely 49°9° to 54°12°)	54°12°	5%	7 mph11 km/h from NNE, gusts 15 mph25 km/h	59%	82%	0
Sun 10p	Cloudy	52°11° (likely 49°9° to 53°12°)	52°11°	5%	6 mph10 km/h from NNE, gusts 16 mph26 km/h	61%	85%	0
Sun 11p	Cloudy	51°11° (likely 48°9° to 52°11°)	51°11°	5%	6 mph10 km/h from NE, gusts 14 mph22 km/h	59%	82%	0
Mon 12a	Cloudy	50°10° (likely 47°8° to 51°11°)	48°9°	5%	6 mph10 km/h from NE, gusts 15 mph23 km/h	61%	81%	0
Mon 1a	Cloudy	49°9° (likely 46°8° to 51°11°)	47°8°	5%	6 mph10 km/h from NE, gusts 15 mph23 km/h	63%	84%	0
Mon 2a	Cloudy	49°9° (likely 46°8° to 50°10°)	47°8°	5%	6 mph10 km/h from NE, gusts 14 mph23 km/h	63%	81%	0
Mon 3a	Cloudy	48°9° (likely 45°7° to 50°10°)	45°7°	5%	6 mph10 km/h from NE, gusts 12 mph19 km/h	63%	80%	0
Mon 4a	Cloudy	48°9° (likely 44°7° to 50°10°)	45°7°	5%	7 mph11 km/h from NE, gusts 16 mph26 km/h	63%	79%	0
Mon 5a	Cloudy	47°8° (likely 44°7° to 50°10°)	44°7°	5%	7 mph11 km/h from NE, gusts 16 mph26 km/h	65%	81%	0
Mon 6a	Cloudy	46°8° (likely 44°7° to 50°10°)	42°6°	5%	7 mph11 km/h from NE, gusts 16 mph25 km/h	63%	81%	0
Mon 7a	Cloudy	46°8° (likely 44°7° to 49°9°)	42°6°	20%	7 mph11 km/h from ENE, gusts 15 mph24 km/h	63%	82%	0
Mon 8a	Cloudy	45°7° (likely 45°7° to 50°10°)	41°5°	20%	8 mph13 km/h from ENE, gusts 18 mph30 km/h	68%	82%	0
Mon 9a	Cloudy	48°9° (likely 46°8° to 51°11°)	45°7°	20%	8 mph13 km/h from ENE, gusts 22 mph35 km/h	65%	88%	0
Mon 10a	Cloudy	53°12° (likely 48°9° to 53°12°)	53°12°	20%	9 mph14 km/h from ENE, gusts 21 mph34 km/h	59%	86%	1
Mon 11a	Cloudy	56°13° (likely 51°11° to 56°13°)	56°13°	20%	9 mph14 km/h from ENE, gusts 21 mph33 km/h	55%	88%	1
Mon 12p	Cloudy	59°15° (likely 53°12° to 59°15°)	59°15°	5%	9 mph14 km/h from ENE, gusts 19 mph30 km/h	51%	93%	2
Mon 1p	Cloudy	61°16° (likely 55°13° to 61°16°)	61°16°	0%	9 mph14 km/h from E, gusts 18 mph29 km/h	50%	92%	2
Mon 2p	Cloudy	62°17° (likely 55°13° to 62°17°)	62°17°	0%	9 mph14 km/h from E, gusts 17 mph28 km/h	50%	92%	3
Mon 3p	Cloudy	64°18° (likely 56°13° to 64°18°)	64°18°	0%	9 mph14 km/h from E, gusts 17 mph27 km/h	48%	86%	3
Mon 4p	Cloudy	64°18° (likely 56°13° to 64°18°)	64°18°	0%	9 mph14 km/h from E, gusts 18 mph29 km/h	48%	88%	2
Mon 5p	Cloudy	62°17° (likely 54°12° to 62°17°)	62°17°	0%	9 mph14 km/h from E, gusts 20 mph32 km/h	52%	81%	1
Mon 6p	Cloudy	61°16° (likely 53°12° to 61°16°)	61°16°	0%	8 mph13 km/h from E, gusts 19 mph31 km/h	53%	93%	0
Mon 7p	Cloudy	58°14° (likely 51°11° to 59°15°)	58°14°	20%	8 mph13 km/h from E, gusts 20 mph33 km/h	60%	93%	0
Mon 8p	Showers	57°14° (likely 54°12° to 60°16°)	57°14°	20%	8 mph13 km/h from E, gusts 20 mph32 km/h	62%	93%	0
Mon 9p	Cloudy	55°13° (likely 53°12° to 59°15°)	55°13°	20%	8 mph13 km/h from E, gusts 20 mph33 km/h	69%	99%	0
Mon 10p	Cloudy	54°12° (likely 53°12° to 59°15°)	54°12°	20%	8 mph13 km/h from E, gusts 22 mph35 km/h	71%	97%	0
Mon 11p	Showers	53°12° (likely 53°12° to 59°15°)	53°12°	20%	8 mph13 km/h from ESE, gusts 23 mph37 km/h	74%	97%	0

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 25. Cloudy. High 68°20°, low 50°10°. Typical 55°13° / 33°1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 47°8°
  Dry
Official NWS forecast
Today: Mostly cloudy. High near 68, with temperatures falling to around 66 in the afternoon. North northeast wind around 7 mph.
Tonight: Mostly cloudy. Low around 50, with temperatures rising to around 52 overnight. North wind around 8 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
63°17°–68°20°
Low, likely
48°9°–51°11°
Typical high / low
55°13° / 33°1°
Wind
13 mph20 km/h, gusts 18 mph29 km/h
UV peak
4
Tomorrow, Oct 26. Mostly cloudy. High 64°18°, low 47°8°. Typical 54°12° / 33°1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 64°18°
  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 noon. Mostly cloudy. High near 64, with temperatures falling to around 62 in the afternoon. East northeast wind around 9 mph. Chance of precipitation is 20%.
Night: A slight chance of rain showers between 7pm and 1am. Mostly cloudy, with a low around 47. East southeast wind around 10 mph. Chance of precipitation is 20%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
57°14°–64°18°
Low, likely
45°7°–49°9°
Typical high / low
54°12° / 33°1°
Wind
14 mph22 km/h, gusts 28 mph45 km/h
UV peak
3
Tuesday, Oct 27. Mostly cloudy. High 69°21°, low 52°11°. Typical 54°12° / 32°0°. Dry. 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
  Drizzle, 62°17°
  20% chance
4. Overnight
  midnight–6 AM
  Drizzle, 58°14°
  30% chance · 0.03 in0.8 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly cloudy, with a high near 69.
Night: A chance of rain showers after 7pm. Mostly cloudy, with a low around 52. Chance of precipitation is 30%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
64°18°–70°21°
Low, likely
51°11°–58°14°
Typical high / low
54°12° / 32°0°
Wind
17 mph28 km/h, gusts 32 mph51 km/h
UV peak
2
Wednesday, Oct 28. Showers. High 72°22°, low 48°9°. Typical 53°12° / 32°0°. Rain 0.17 in4.3 mm, 40% chance. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 57°14°
  30% chance
2. Afternoon
  noon–6 PM
  Sunny, 71°22°
  Dry
3. Evening
  6 PM–midnight
  Showers, 62°17°
  30% chance · 0.15 in3.9 mm
4. Overnight
  midnight–6 AM
  Showers, 54°12°
  30% 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 72. Chance of precipitation is 40%.
Night: A chance of rain showers. Partly cloudy, with a low around 48. Chance of precipitation is 40%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
69°21°–73°23°
Low, likely
48°9°–56°13°
Typical high / low
53°12° / 32°0°
Wind
16 mph25 km/h, gusts 32 mph52 km/h
UV peak
4
Thursday, Oct 29. Showers. High 72°22°, low 52°11°. Typical 53°12° / 31°−1°. Rain 0.19 in4.8 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 53°12°
  30% chance · 0.02 in0.4 mm
2. Afternoon
  noon–6 PM
  Cloudy, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 55°13°
  20% chance · 0.03 in0.7 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain showers before 1pm. Mostly sunny, with a high near 72. Chance of precipitation is 30%.
Night: A chance of rain showers after 7pm. Partly cloudy, with a low around 52. Chance of precipitation is 30%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
63°17°–72°22°
Low, likely
46°8°–54°12°
Typical high / low
53°12° / 31°−1°
Wind
12 mph19 km/h, gusts 32 mph52 km/h
UV peak
2
Friday, Oct 30. Showers. High 73°23°, low 53°12°. Typical 52°11° / 31°−1°. Rain 0.14 in3.6 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 56°13°
  30% chance
2. Afternoon
  noon–6 PM
  Drizzle, 66°19°
  40% chance · 0.01 in0.3 mm
3. Evening
  6 PM–midnight
  Drizzle, 61°16°
  40% chance · 0.05 in1.2 mm
4. Overnight
  midnight–6 AM
  Showers, 57°14°
  50% chance · 0.11 in2.9 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 73. Chance of precipitation is 30%.
Night: Rain showers likely. Mostly cloudy, with a low around 53. Chance of precipitation is 60%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
60°16°–73°23°
Low, likely
47°8°–60°16°
Typical high / low
52°11° / 31°−1°
Wind
23 mph36 km/h, gusts 39 mph62 km/h
UV peak
1
Saturday, Oct 31. Showers. High 68°20°, low 55°13°. Typical 52°11° / 31°−1°. Rain 0.26 in6.6 mm, 70% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 57°14°
  50% chance · 0.09 in2.3 mm
2. Afternoon
  noon–6 PM
  Drizzle, 64°18°
  50% chance · 0.03 in0.8 mm
3. Evening
  6 PM–midnight
  Drizzle, 58°15°
  50% chance · 0.04 in1.1 mm
4. Overnight
  midnight–6 AM
  Drizzle, 56°13°
  50% chance · 0.09 in2.3 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: Rain showers likely. Mostly cloudy, with a high near 68.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
62°17°–68°20°
Low, likely
49°9°–59°15°
Typical high / low
52°11° / 31°−1°
Wind
17 mph28 km/h, gusts 29 mph46 km/h
UV peak
2
Sunday, Nov 1. Drizzle. High 63°17°, low 51°11°. Typical 51°11° / 30°−1°. Rain 0.17 in4.3 mm, 50% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 57°14°
  40% chance · 0.04 in0.9 mm
2. Afternoon
  noon–6 PM
  Cloudy, 60°15°
  30% chance
3. Evening
  6 PM–midnight
  Drizzle, 55°13°
  30% chance · 0.03 in0.6 mm
4. Overnight
  midnight–6 AM
  Cloudy, 51°11°
  30% chance · 0.14 in3.7 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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
61°16°–66°19°
Low, likely
41°5°–55°13°
Typical high / low
51°11° / 30°−1°
Wind
18 mph29 km/h, gusts 31 mph50 km/h
UV peak
2
Monday, Nov 2. Drizzle. High 61°16°, low 50°10°. Typical 51°11° / 30°−1°. Rain 0.49 in12 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 53°12°
  30% chance · 0.2 in5.2 mm
2. Afternoon
  noon–6 PM
  Drizzle, 60°16°
  30% chance · 0.11 in2.8 mm
3. Evening
  6 PM–midnight
  Drizzle, 54°12°
  30% chance · 0.01 in0.3 mm
4. Overnight
  midnight–6 AM
  Drizzle, 46°8°
  30% chance · 0.03 in0.7 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
49°9°–71°22°
Low, likely
34°1°–57°14°
Typical high / low
51°11° / 30°−1°
Wind
24 mph38 km/h, gusts 41 mph65 km/h
Tuesday, Nov 3. Rain. High 57°14°, low 45°7°. Typical 50°10° / 29°−2°. Rain 0.3 in7.6 mm, 30% chance. Forecasts agree.
1. Morning
  6 AM–noon
  Drizzle, 47°8°
  30% chance · 0.04 in1.1 mm
2. Afternoon
  noon–6 PM
  Rain, 49°9°
  30% chance · 0.13 in3.3 mm
3. Evening
  6 PM–midnight
  Drizzle, 46°8°
  20% chance · 0.03 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 agreeIndependent forecasts are close; the range is narrow.
High, likely
55°13°–58°14°
Low, likely
41°5°–48°9°
Typical high / low
50°10° / 29°−2°
Wind
26 mph42 km/h, gusts 44 mph71 km/h

10 days15 days30 days

The outlook

Today
Dry, high 68°, low 50°.
Tomorrow
Dry, high 64°, low 47°, cooling off.
Tuesday
Dry, high 69°, low 52°, warming up.
Rest of week
Highs 57–73°; chance of precipitation on Wednesday, 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

4.0 mi

Below flood stage

Level: 5.3 ft
Flow: 272 cfs

Reading from Sun 12 AM · NWS gauge page

Willow Creek at Mason City US 18 Bus

6.9 mi

Level: 85.8 ft

Reading from Sat 11:45 PM · NWS gauge page

Spring Creek near Mason City US 65

7.3 mi

Level: 80.8 ft
Flow: 17 cfs

Reading from Sat 11:45 PM · NWS gauge page

Clear Lake at Clear Lake

12 mi

Level: 4.6 ft

Reading from Sat 11 PM · NWS gauge page

For your home

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

Heating this week

About 88% less heating than a typical week.

This week 18Typical 157

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 4
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 46°F).

Open the windows?

Today, 11:00 AM–7:00 PM

Good stretch to open the windows (air quality forecast not available for part of this window).

Is this typical?

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

Oct 25, today vs a typical year

Today’s expected high is 13°7° warmer than typical.

Last 7 days vs normal

On average 10°6° warmer than normal (daily mean temperature).

+5°+3°MonOct 19
+5°+3°TueOct 20
+12°+7°WedOct 21
+15°+8°ThuOct 22
+14°+8°FriOct 23
—SatOct 24
—SunOct 25

Portland weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 35 min; Losing 2 min 44 s a day; shortest Dec 21, 1 h 36 min less
Golden hour: 5:34–6:31 PM; Morning 7:20–8:18 AM
Blue hour: 6:31–6:43 PM; Morning 7:09–7:20 AM; first light 7:09 AM

Stars tonight? Poor

Clouds most of the night (about 78% cover).

Moon

Waxing gibbous

99% lit · growing

Today: sets 7:04 AM · rises 5:39 PM
Full moon: Today, 11:12 PM
New moon: Nov 9

Looking west from Portland. A level horizon.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.