Observed 12:25 AM CDT at KMCW

Clear Lake, IA weather

Partly cloudy and 52°11°, 12°7° warmer than a typical Oct 25.

Mostly agree

Now 52°11°

Partly cloudy

Wind: 7 mph11 km/h; From the north-northwest. 610–8 mph13 km/h through 12 PM
Dew point: 46°8°; Comfortable
UV index: 0Low; Moderate 12–4 PM · peak 4
Air quality: 49Good; Main pollutant: PM2.5 (fine particles)
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

Good hours for

Low 49°9° today at 8 AM
Above 60°16° today by 11 AM
High 67°19° today at 4 PM
Below 60°16° tonight after 7 PM

TonightDown to 51°11° by 5 AM · Mostly cloudy
This morningUp to 60°16° by 11 AM · Mostly cloudy
This afternoonUp to 67°19° by 4 PM · Mostly cloudy
TonightDown to 46°8° by 5 AM · Mostly cloudy
Tomorrow morningUp to 56°13° by 11 AM · rain chance 20% · Cloudy
Tomorrow afternoonUp to 63°17° by 4 PM · Cloudy
Tomorrow nightDown to 53°12° by 10 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	56°13° (likely 52°11° to 56°13°)	56°13°	5%	8 mph13 km/h from NNW, gusts 14 mph23 km/h	77%	87%	0
Sun 1a	Cloudy	55°13° (likely 51°11° to 55°13°)	55°13°	0%	8 mph13 km/h from N, gusts 13 mph21 km/h	80%	79%	0
Sun 2a	Cloudy	54°12° (likely 52°11° to 54°12°)	54°12°	5%	7 mph11 km/h from N, gusts 10 mph16 km/h	80%	74%	0
Sun 3a	Cloudy	53°12° (likely 51°11° to 53°12°)	53°12°	5%	7 mph11 km/h from N, gusts 11 mph18 km/h	83%	84%	0
Sun 4a	Cloudy	52°11° (likely 51°11° to 52°11°)	52°11°	0%	8 mph13 km/h from N, gusts 12 mph19 km/h	86%	91%	0
Sun 5a	Cloudy	51°11° (likely 50°10° to 51°11°)	51°11°	0%	7 mph11 km/h from N, gusts 11 mph18 km/h	86%	91%	0
Sun 6a	Cloudy	51°11° (likely 49°9° to 51°11°)	51°11°	0%	6 mph10 km/h from N, gusts 12 mph19 km/h	86%	85%	0
Sun 7a	Cloudy	50°10° (likely 48°9° to 51°11°)	48°9°	5%	6 mph10 km/h from NNE, gusts 12 mph19 km/h	89%	79%	0
Sun 8a	Cloudy	49°9° (likely 48°9° to 51°11°)	47°8°	5%	6 mph10 km/h from NNE, gusts 12 mph20 km/h	93%	75%	0
Sun 9a	Cloudy	52°11° (likely 50°10° to 52°11°)	52°11°	5%	6 mph10 km/h from NNE, gusts 14 mph22 km/h	83%	68%	0
Sun 10a	Mostly cloudy	57°14° (likely 52°11° to 57°14°)	57°14°	5%	6 mph10 km/h from NNE, gusts 13 mph21 km/h	69%	49%	1
Sun 11a	Cloudy	60°16° (likely 54°12° to 60°16°)	60°16°	5%	6 mph10 km/h from NNE, gusts 11 mph18 km/h	62%	72%	2
Sun 12p	Cloudy	63°17° (likely 56°13° to 63°17°)	63°17°	5%	6 mph10 km/h from NNE, gusts 10 mph17 km/h	56%	75%	3
Sun 1p	Cloudy	64°18° (likely 58°14° to 64°18°)	64°18°	5%	5 mph8 km/h from NNE, gusts 10 mph16 km/h	54%	75%	4
Sun 2p	Cloudy	66°19° (likely 60°16° to 66°19°)	66°19°	5%	6 mph10 km/h from NNE, gusts 9 mph15 km/h	50%	76%	4
Sun 3p	Cloudy	66°19° (likely 61°16° to 66°19°)	66°19°	5%	6 mph10 km/h from NNE, gusts 9 mph15 km/h	48%	74%	3
Sun 4p	Cloudy	67°19° (likely 61°16° to 67°19°)	67°19°	5%	7 mph11 km/h from NNE, gusts 11 mph17 km/h	47%	69%	2
Sun 5p	Mostly cloudy	65°18° (likely 57°14° to 65°18°)	65°18°	5%	7 mph11 km/h from NNE, gusts 14 mph22 km/h	48%	67%	1
Sun 6p	Cloudy	63°17° (likely 50°10° to 63°17°)	63°17°	5%	8 mph13 km/h from NNE, gusts 16 mph26 km/h	50%	73%	0
Sun 7p	Cloudy	59°15° (likely 49°9° to 59°15°)	59°15°	5%	8 mph13 km/h from NNE, gusts 16 mph26 km/h	53%	73%	0
Sun 8p	Cloudy	54°12° (likely 48°9° to 55°13°)	54°12°	5%	8 mph13 km/h from NNE, gusts 18 mph28 km/h	61%	78%	0
Sun 9p	Cloudy	52°11° (likely 47°8° to 53°12°)	52°11°	5%	8 mph13 km/h from NNE, gusts 16 mph26 km/h	61%	81%	0
Sun 10p	Cloudy	50°10° (likely 47°8° to 52°11°)	47°8°	5%	7 mph11 km/h from NE, gusts 17 mph27 km/h	63%	84%	0
Sun 11p	Cloudy	50°10° (likely 46°8° to 51°11°)	47°8°	5%	7 mph11 km/h from NE, gusts 17 mph27 km/h	61%	82%	0
Mon 12a	Cloudy	49°9° (likely 46°8° to 51°11°)	46°8°	5%	7 mph11 km/h from NE, gusts 18 mph29 km/h	63%	83%	0
Mon 1a	Cloudy	49°9° (likely 45°7° to 50°10°)	46°8°	5%	7 mph11 km/h from NE, gusts 18 mph28 km/h	61%	84%	0
Mon 2a	Cloudy	48°9° (likely 44°7° to 50°10°)	45°7°	5%	7 mph11 km/h from NE, gusts 15 mph24 km/h	63%	82%	0
Mon 3a	Cloudy	48°9° (likely 44°7° to 50°10°)	45°7°	5%	8 mph13 km/h from NE, gusts 14 mph23 km/h	63%	81%	0
Mon 4a	Cloudy	48°9° (likely 44°7° to 49°9°)	44°7°	5%	8 mph13 km/h from NE, gusts 17 mph28 km/h	60%	81%	0
Mon 5a	Cloudy	46°8° (likely 43°6° to 49°9°)	42°6°	5%	8 mph13 km/h from NE, gusts 19 mph31 km/h	65%	82%	0
Mon 6a	Cloudy	46°8° (likely 43°6° to 49°9°)	42°6°	5%	8 mph13 km/h from ENE, gusts 17 mph28 km/h	60%	81%	0
Mon 7a	Cloudy	46°8° (likely 43°6° to 49°9°)	42°6°	10%	9 mph14 km/h from ENE, gusts 17 mph27 km/h	60%	83%	0
Mon 8a	Cloudy	45°7° (likely 43°6° to 49°9°)	40°4°	10%	9 mph14 km/h from ENE, gusts 21 mph34 km/h	65%	83%	0
Mon 9a	Cloudy	48°9° (likely 45°7° to 50°10°)	44°7°	20%	9 mph14 km/h from ENE, gusts 22 mph36 km/h	63%	93%	0
Mon 10a	Cloudy	53°12° (likely 46°8° to 53°12°)	53°12°	20%	9 mph14 km/h from ENE, gusts 23 mph37 km/h	57%	85%	1
Mon 11a	Cloudy	56°13° (likely 49°9° to 56°13°)	56°13°	20%	10 mph16 km/h from ENE, gusts 22 mph35 km/h	53%	89%	1
Mon 12p	Cloudy	58°14° (likely 50°10° to 58°14°)	58°14°	5%	9 mph14 km/h from E, gusts 21 mph34 km/h	51%	88%	1
Mon 1p	Cloudy	60°16° (likely 53°12° to 60°16°)	60°16°	0%	9 mph14 km/h from E, gusts 19 mph31 km/h	47%	85%	3
Mon 2p	Cloudy	61°16° (likely 54°12° to 61°16°)	61°16°	0%	9 mph14 km/h from E, gusts 18 mph30 km/h	48%	97%	3
Mon 3p	Cloudy	62°17° (likely 54°12° to 62°17°)	62°17°	0%	9 mph14 km/h from E, gusts 19 mph30 km/h	46%	89%	2
Mon 4p	Cloudy	63°17° (likely 53°12° to 63°17°)	63°17°	0%	9 mph14 km/h from E, gusts 20 mph32 km/h	46%	86%	2
Mon 5p	Cloudy	62°17° (likely 53°12° to 62°17°)	62°17°	0%	9 mph14 km/h from E, gusts 21 mph33 km/h	48%	82%	0
Mon 6p	Cloudy	60°16° (likely 52°11° to 60°16°)	60°16°	0%	8 mph13 km/h from E, gusts 19 mph30 km/h	53%	91%	0
Mon 7p	Cloudy	58°14° (likely 51°11° to 58°14°)	58°14°	20%	8 mph13 km/h from E, gusts 19 mph31 km/h	57%	97%	0
Mon 8p	Showers	56°13° (likely 53°12° to 59°15°)	56°13°	20%	8 mph13 km/h from E, gusts 18 mph30 km/h	62%	94%	0
Mon 9p	Cloudy	54°12° (likely 53°12° to 59°15°)	54°12°	20%	9 mph14 km/h from ESE, gusts 19 mph31 km/h	69%	98%	0
Mon 10p	Showers	53°12° (likely 52°11° to 59°15°)	53°12°	20%	9 mph14 km/h from ESE, gusts 21 mph34 km/h	71%	99%	0
Mon 11p	Showers	53°12° (likely 52°11° to 59°15°)	53°12°	20%	9 mph14 km/h from ESE, gusts 24 mph39 km/h	74%	98%	0

Days ahead

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

Today, Oct 25. Cloudy. High 67°19°, low 49°9°. Typical 55°13° / 33°1°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 49°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 46°8°
  Dry
Official NWS forecast
Today: Mostly cloudy. High near 67, with temperatures falling to around 65 in the afternoon. North northeast wind around 7 mph.
Tonight: Mostly cloudy. Low around 49, with temperatures rising to around 51 overnight. North wind around 8 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
61°16°–67°19°
Low, likely
46°8°–50°10°
Typical high / low
55°13° / 33°1°
Wind
12 mph19 km/h, gusts 20 mph32 km/h
UV peak
4
Tomorrow, Oct 26. Mostly cloudy. High 63°17°, low 48°9°. Typical 54°12° / 33°1°. Rain 0.03 in0.8 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 45°7°
  20% chance
2. Afternoon
  noon–6 PM
  Cloudy, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 56°13°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 54°12°
  Dry
Official NWS forecast
Day: A slight chance of rain showers between 9am and noon. Mostly cloudy, with a high near 63. East wind around 10 mph. Chance of precipitation is 20%.
Night: A slight chance of rain showers after 7pm. Mostly cloudy, with a low around 48. East southeast wind 8 to 12 mph. Chance of precipitation is 20%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
55°13°–63°17°
Low, likely
44°7°–49°9°
Typical high / low
54°12° / 33°1°
Wind
15 mph24 km/h, gusts 29 mph46 km/h
UV peak
3
Tuesday, Oct 27. Mostly cloudy. High 68°20°, low 52°11°. Typical 54°12° / 32°0°. Dry. Mostly agree. Best day outdoors this week.
1. Morning
  6 AM–noon
  Cloudy, 55°13°
  Dry
2. Afternoon
  noon–6 PM
  Drizzle, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Drizzle, 61°16°
  20% chance · 0.02 in0.6 mm
4. Overnight
  midnight–6 AM
  Partly cloudy, 58°14°
  30% chance · 0.04 in0.9 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain showers before 7am. Partly sunny, with a high near 68. Chance of precipitation is 20%.
Night: A chance of rain showers after 7pm. Mostly cloudy, with a low around 52. Chance of precipitation is 30%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Best day outdoors this week: the one dry, mild day the forecasts agree on (high 68°20°).
High, likely
65°18°–69°21°
Low, likely
51°11°–57°14°
Typical high / low
54°12° / 32°0°
Wind
17 mph27 km/h, gusts 34 mph55 km/h
UV peak
3
Wednesday, Oct 28. Showers. High 71°22°, low 48°9°. Typical 53°12° / 32°0°. Rain 0.2 in5.1 mm, 40% chance. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 57°14°
  30% chance
2. Afternoon
  noon–6 PM
  Sunny, 71°21°
  Dry
3. Evening
  6 PM–midnight
  Showers, 62°17°
  30% chance · 0.17 in4.3 mm
4. Overnight
  midnight–6 AM
  Showers, 53°12°
  30% chance · 0.11 in2.7 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 71. 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
68°20°–72°22°
Low, likely
48°9°–56°13°
Typical high / low
53°12° / 32°0°
Wind
15 mph24 km/h, gusts 31 mph49 km/h
UV peak
4
Thursday, Oct 29. Showers. High 71°22°, low 52°11°. Typical 53°12° / 31°−1°. Rain 0.17 in4.3 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 52°11°
  20% chance · 0.01 in0.3 mm
2. Afternoon
  noon–6 PM
  Partly sunny, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 58°14°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 54°12°
  20% 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 before 1pm. Mostly sunny, with a high near 71.
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°–71°22°
Low, likely
45°7°–54°12°
Typical high / low
53°12° / 31°−1°
Wind
13 mph21 km/h, gusts 34 mph54 km/h
UV peak
2
Friday, Oct 30. Showers. High 72°22°, low 53°12°. Typical 52°11° / 31°−1°. Rain 0.17 in4.3 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 55°13°
  30% chance · 0.03 in0.8 mm
2. Afternoon
  noon–6 PM
  Cloudy, 65°19°
  30% chance · 0.03 in0.7 mm
3. Evening
  6 PM–midnight
  Drizzle, 61°16°
  50% chance · 0.05 in1.3 mm
4. Overnight
  midnight–6 AM
  Drizzle, 56°13°
  50% chance · 0.13 in3.3 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 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°–72°22°
Low, likely
45°7°–60°16°
Typical high / low
52°11° / 31°−1°
Wind
23 mph36 km/h, gusts 37 mph60 km/h
UV peak
1
Saturday, Oct 31. Showers. High 67°19°, low 55°13°. Typical 52°11° / 31°−1°. Rain 0.3 in7.6 mm, 70% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 57°14°
  50% chance · 0.12 in3.1 mm
2. Afternoon
  noon–6 PM
  Drizzle, 63°17°
  50% chance · 0.02 in0.6 mm
3. Evening
  6 PM–midnight
  Drizzle, 58°14°
  50% chance · 0.05 in1.4 mm
4. Overnight
  midnight–6 AM
  Drizzle, 56°13°
  40% chance · 0.11 in2.9 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: Rain showers likely. Mostly cloudy, with a high near 67.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
61°16°–67°19°
Low, likely
49°9°–58°14°
Typical high / low
52°11° / 31°−1°
Wind
18 mph29 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 0.19 in4.8 mm, 50% chance. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 56°13°
  40% chance · 0.03 in0.7 mm
2. Afternoon
  noon–6 PM
  Cloudy, 58°15°
  30% chance
3. Evening
  6 PM–midnight
  Drizzle, 55°13°
  30% chance · 0.02 in0.5 mm
4. Overnight
  midnight–6 AM
  Cloudy, 50°10°
  30% chance · 0.13 in3.4 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
60°16°–65°18°
Low, likely
40°4°–55°13°
Typical high / low
51°11° / 30°−1°
Wind
18 mph29 km/h, gusts 30 mph49 km/h
UV peak
2
Monday, Nov 2. Drizzle. High 60°16°, low 49°9°. Typical 51°11° / 30°−1°. Rain 0.43 in11 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 53°11°
  30% chance · 0.17 in4.4 mm
2. Afternoon
  noon–6 PM
  Drizzle, 60°16°
  30% chance · 0.08 in2.1 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 · 0.04 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
48°9°–72°22°
Low, likely
33°1°–57°14°
Typical high / low
51°11° / 30°−1°
Wind
23 mph37 km/h, gusts 40 mph64 km/h
Tuesday, Nov 3. Rain. High 56°13°, low 44°7°. Typical 50°10° / 29°−2°. Rain 0.26 in6.6 mm, 30% chance. Forecasts agree.
1. Morning
  6 AM–noon
  Drizzle, 46°8°
  30% chance · 0.02 in0.6 mm
2. Afternoon
  noon–6 PM
  Rain, 48°9°
  30% chance · 0.1 in2.6 mm
3. Evening
  6 PM–midnight
  Drizzle, 45°7°
  20% chance · 0.02 in0.5 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°–47°8°
Typical high / low
50°10° / 29°−2°
Wind
26 mph42 km/h, gusts 45 mph72 km/h

10 days15 days30 days

The outlook

Today
Dry, high 67°, low 49°.
Tomorrow
Dry, high 63°, low 48°, cooling off.
Tuesday
Dry, high 68°, low 52°, warming up.
Rest of week
Highs 56–72°; 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

Clear Lake at Clear Lake

0.9 mi

Level: 4.6 ft

Reading from Sat 11 PM · NWS gauge page

Willow Creek at Mason City US 18 Bus

5.4 mi

Level: 85.8 ft

Reading from Sat 11:45 PM · NWS gauge page

Winnebago River at Mason City

9.4 mi

Below flood stage

Level: 5.3 ft
Flow: 272 cfs

Reading from Sun 12 AM · NWS gauge page

Spring Creek near Mason City US 65

9.8 mi

Level: 80.8 ft
Flow: 17 cfs

Reading from Sat 11:45 PM · NWS gauge page

For your home

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

Heating this week

About 87% less heating than a typical week.

This week 20Typical 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–6:00 PM

Good stretch to open the windows.

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 12°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

Clear Lake 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: 5:35–6:32 PM; Morning 7:21–8:19 AM
Blue hour: 6:32–6:44 PM; Morning 7:10–7:21 AM; first light 7:10 AM

Stars tonight? Poor

Clouds most of the night (about 84% cover).

Moon

Waxing gibbous

99% lit · growing

Today: sets 7:05 AM · rises 5:40 PM
Full moon: Today, 11:12 PM
New moon: Nov 9

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