Observed 2:15 PM CDT at KSLB

Marathon, IA weather

Sunny and 72°22°, 18°10° warmer than a typical Oct 24.

Forecasts agree

Now 72°22°

Sunny

Wind: 10 mph17 km/hgusts 20 mph32 km/h; From the west-northwest. 58–10 mph17 km/h through 2 AM
Dew point: 52°11°; Comfortable
UV index: 3Moderate; Moderate until 3 PM · peak 4
Air quality: 58Moderate; PM2.5 (fine particles) · tomorrow good
Pressure: 30.19 inHg1022 hPa; Steady over the last 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

4°2° cooler than this time yesterday (75°24° then, 72°22° now)

Good hours for

Below 60°16° tonight after 8 PM
Low 48°9° tomorrow at 8 AM
Above 60°16° tomorrow by noon
Gusts to 26 mph42 km/h tomorrow night 2–4 AM

This afternoonNear 73°23° · Mostly cloudy
TonightDown to 49°9° by 4 AM · Mostly cloudy
Tomorrow morningUp to 57°14° by 11 AM · rain chance 10% · Mostly cloudy
Tomorrow afternoonUp to 64°18° by 3 PM · Mostly cloudy
Tomorrow nightDown to 45°7° by 5 AM · rain chance 10% · gusts to 26 mph42 km/h · Cloudy
Monday morningUp to 54°12° by 11 AM · rain chance 30% · Cloudy

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 2p	Partly sunny	74°23° (likely 73°23° to 74°23°)	74°23°	10%	10 mph16 km/h from WSW, gusts 16 mph26 km/h	46%	43%	3
Sat 3p	Mostly sunny	74°23° (likely 72°22° to 74°23°)	74°23°	5%	10 mph16 km/h from W, gusts 16 mph25 km/h	48%	55%	2
Sat 4p	Cloudy	73°23° (likely 70°21° to 73°23°)	73°23°	5%	5 mph8 km/h from W, gusts 13 mph21 km/h	49%	76%	1
Sat 5p	Cloudy	71°22° (likely 67°19° to 72°22°)	71°22°	10%	5 mph8 km/h from NW, gusts 12 mph19 km/h	53%	83%	1
Sat 6p	Cloudy	67°19° (likely 63°17° to 68°20°)	67°19°	5%	5 mph8 km/h from NNW, gusts 15 mph23 km/h	59%	87%	0
Sat 7p	Partly cloudy	63°17° (likely 57°14° to 65°18°)	63°17°	5%	5 mph8 km/h from N, gusts 18 mph29 km/h	65%	83%	0
Sat 8p	Cloudy	59°15° (likely 53°12° to 61°16°)	59°15°	10%	5 mph8 km/h from N, gusts 17 mph27 km/h	69%	77%	0
Sat 9p	Cloudy	57°14° (likely 51°11° to 58°14°)	57°14°	5%	5 mph8 km/h from N, gusts 16 mph26 km/h	72%	77%	0
Sat 10p	Cloudy	55°13° (likely 50°10° to 55°13°)	55°13°	5%	5 mph8 km/h from N, gusts 15 mph24 km/h	74%	78%	0
Sat 11p	Cloudy	54°12° (likely 50°10° to 54°12°)	54°12°	10%	5 mph8 km/h from N, gusts 14 mph23 km/h	74%	81%	0
Sun 12a	Cloudy	53°12° (likely 49°9° to 53°12°)	53°12°	10%	5 mph8 km/h from N, gusts 14 mph22 km/h	77%	81%	0
Sun 1a	Cloudy	52°11° (likely 48°9° to 52°11°)	52°11°	5%	5 mph8 km/h from NNE, gusts 13 mph22 km/h	77%	83%	0
Sun 2a	Cloudy	51°11° (likely 48°9° to 51°11°)	51°11°	5%	5 mph8 km/h from NNE, gusts 14 mph23 km/h	80%	83%	0
Sun 3a	Cloudy	50°10° (likely 48°9° to 50°10°)	48°9°	5%	5 mph8 km/h from NNE, gusts 13 mph21 km/h	83%	83%	0
Sun 4a	Mostly cloudy	49°9° (likely 47°8° to 50°10°)	46°8°	5%	5 mph8 km/h from NNE, gusts 13 mph22 km/h	83%	86%	0
Sun 5a	Mostly cloudy	49°9° (likely 47°8° to 49°9°)	46°8°	5%	5 mph8 km/h from NE, gusts 15 mph23 km/h	83%	80%	0
Sun 6a	Mostly cloudy	49°9° (likely 47°8° to 49°9°)	46°8°	10%	5 mph8 km/h from NE, gusts 14 mph23 km/h	83%	67%	0
Sun 7a	Cloudy	49°9° (likely 46°8° to 49°9°)	47°8°	10%	5 mph8 km/h from NE, gusts 15 mph25 km/h	83%	90%	0
Sun 8a	Cloudy	48°9° (likely 46°8° to 49°9°)	45°7°	5%	5 mph8 km/h from NE, gusts 16 mph25 km/h	86%	84%	0
Sun 9a	Cloudy	50°10° (likely 47°8° to 50°10°)	47°8°	5%	5 mph8 km/h from NE, gusts 18 mph29 km/h	83%	88%	0
Sun 10a	Mostly cloudy	54°12° (likely 48°9° to 54°12°)	54°12°	5%	5 mph8 km/h from NE, gusts 18 mph30 km/h	74%	77%	1
Sun 11a	Cloudy	57°14° (likely 49°9° to 57°14°)	57°14°	5%	5 mph8 km/h from ENE, gusts 18 mph29 km/h	69%	87%	2
Sun 12p	Cloudy	60°16° (likely 50°10° to 60°16°)	60°16°	5%	5 mph8 km/h from ENE, gusts 17 mph27 km/h	62%	96%	3
Sun 1p	Cloudy	61°16° (likely 52°11° to 62°17°)	61°16°	5%	5 mph8 km/h from NE, gusts 15 mph24 km/h	60%	79%	4
Sun 2p	Cloudy	62°17° (likely 53°12° to 64°18°)	62°17°	5%	5 mph8 km/h from NE, gusts 15 mph25 km/h	58%	75%	4
Sun 3p	Cloudy	64°18° (likely 55°13° to 65°18°)	64°18°	5%	5 mph8 km/h from NE, gusts 16 mph26 km/h	54%	67%	3
Sun 4p	Cloudy	62°17° (likely 55°13° to 65°18°)	62°17°	5%	10 mph16 km/h from NE, gusts 18 mph28 km/h	56%	63%	3
Sun 5p	Cloudy	62°17° (likely 54°12° to 62°17°)	62°17°	5%	10 mph16 km/h from NE, gusts 20 mph32 km/h	54%	65%	1
Sun 6p	Cloudy	60°16° (likely 51°11° to 60°16°)	60°16°	5%	10 mph16 km/h from NE, gusts 21 mph35 km/h	55%	75%	0
Sun 7p	Cloudy	55°13° (likely 49°9° to 55°13°)	55°13°	0%	10 mph16 km/h from NE, gusts 22 mph36 km/h	61%	81%	0
Sun 8p	Cloudy	52°11° (likely 48°9° to 52°11°)	52°11°	0%	10 mph16 km/h from NE, gusts 22 mph35 km/h	66%	82%	0
Sun 9p	Cloudy	50°10° (likely 47°8° to 51°11°)	46°8°	0%	10 mph16 km/h from NE, gusts 22 mph36 km/h	68%	79%	0
Sun 10p	Cloudy	49°9° (likely 46°8° to 50°10°)	45°7°	0%	10 mph16 km/h from NE, gusts 24 mph39 km/h	66%	86%	0
Sun 11p	Cloudy	48°9° (likely 46°8° to 50°10°)	44°7°	0%	10 mph16 km/h from NE, gusts 24 mph39 km/h	65%	92%	0
Mon 12a	Cloudy	47°8° (likely 46°8° to 49°9°)	43°6°	0%	10 mph16 km/h from NE, gusts 23 mph36 km/h	65%	90%	0
Mon 1a	Cloudy	47°8° (likely 46°8° to 49°9°)	43°6°	10%	10 mph16 km/h from NE, gusts 24 mph38 km/h	65%	96%	0
Mon 2a	Cloudy	47°8° (likely 45°7° to 48°9°)	43°6°	10%	10 mph16 km/h from NE, gusts 26 mph41 km/h	65%	98%	0
Mon 3a	Cloudy	46°8° (likely 44°7° to 48°9°)	41°5°	0%	10 mph16 km/h from NE, gusts 26 mph42 km/h	68%	100%	0
Mon 4a	Cloudy	46°8° (likely 44°7° to 48°9°)	41°5°	10%	10 mph16 km/h from NE, gusts 25 mph40 km/h	68%	96%	0
Mon 5a	Cloudy	45°7° (likely 44°7° to 48°9°)	40°4°	0%	10 mph16 km/h from NE, gusts 24 mph38 km/h	70%	100%	0
Mon 6a	Cloudy	45°7° (likely 44°7° to 48°9°)	40°4°	20%	10 mph16 km/h from ENE, gusts 24 mph39 km/h	73%	100%	0
Mon 7a	Cloudy	45°7° (likely 44°7° to 48°9°)	40°4°	30%	10 mph16 km/h from ENE, gusts 25 mph39 km/h	73%	100%	0
Mon 8a	Cloudy	44°7° (likely 44°7° to 50°10°)	39°4°	30%	10 mph16 km/h from ENE, gusts 22 mph35 km/h	79%	100%	0
Mon 9a	Cloudy	46°8° (likely 46°8° to 51°11°)	41°5°	30%	10 mph16 km/h from ENE, gusts 22 mph35 km/h	79%	98%	0
Mon 10a	Cloudy	51°11° (likely 48°9° to 53°12°)	51°11°	30%	10 mph16 km/h from ENE, gusts 21 mph34 km/h	71%	95%	0
Mon 11a	Cloudy	54°12° (likely 49°9° to 55°13°)	54°12°	30%	10 mph16 km/h from E, gusts 21 mph33 km/h	66%	96%	0
Mon 12p	Cloudy	56°13° (likely 53°12° to 57°14°)	56°13°	30%	10 mph16 km/h from E, gusts 20 mph32 km/h	64%	85%	1
Mon 1p	Cloudy	58°14° (likely 54°12° to 60°16°)	58°14°	20%	10 mph16 km/h from E, gusts 19 mph31 km/h	60%	84%	2

Days ahead

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

Today, Oct 24. Cloudy. High 74°23°, low 48°9°. Typical 56°13° / 35°2°. Dry. Forecasts agree.
1. Afternoon
  noon–6 PM
  Cloudy, 74°23°
  Dry
2. Evening
  6 PM–midnight
  Cloudy, 59°15°
  Dry
3. Overnight
  midnight–6 AM
  Cloudy, 49°9°
  Dry
Official NWS forecast
Today: Partly sunny. High near 74, with temperatures falling to around 71 in the afternoon. West wind 5 to 10 mph.
Tonight: Mostly cloudy, with a low around 48. North wind around 5 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
73°23°–74°23°
Low, likely
48°9°–54°12°
Typical high / low
56°13° / 35°2°
Wind
16 mph25 km/h, gusts 30 mph48 km/h
UV peak
4
Tomorrow, Oct 25. Mostly cloudy. High 64°18°, low 43°6°. Typical 56°13° / 34°1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 52°11°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 45°7°
  Dry
Official NWS forecast
Day: Mostly cloudy, with a high near 64. Northeast wind 5 to 10 mph.
Night: Mostly cloudy, with a low around 43. Northeast wind around 10 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
55°13°–65°18°
Low, likely
43°6°–48°9°
Typical high / low
56°13° / 34°1°
Wind
15 mph24 km/h, gusts 29 mph47 km/h
UV peak
4
Monday, Oct 26. Showers. High 63°17°, low 50°10°. Typical 55°13° / 34°1°. Rain 0.08 in2 mm, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 44°7°
  30% chance
2. Afternoon
  noon–6 PM
  Cloudy, 62°17°
  30% chance
3. Evening
  6 PM–midnight
  Drizzle, 59°15°
  30% chance · 0.05 in1.2 mm
4. Overnight
  midnight–6 AM
  Drizzle, 59°15°
  20% chance · 0.09 in2.3 mm
Official NWS forecast
Day: A chance of rain showers. Mostly cloudy, with a high near 63. East wind around 10 mph. Chance of precipitation is 30%.
Night: A chance of rain showers. Mostly cloudy, with a low around 50. Southeast wind 5 to 10 mph. Chance of precipitation is 30%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
58°14°–64°18°
Low, likely
44°7°–50°10°
Typical high / low
55°13° / 34°1°
Wind
19 mph30 km/h, gusts 32 mph52 km/h
UV peak
3
Tuesday, Oct 27. Mostly cloudy. High 66°19°, low 51°11°. Typical 55°13° / 34°1°. Rain 0.13 in3.3 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 57°14°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 62°16°
  20% chance · 0.01 in0.3 mm
4. Overnight
  midnight–6 AM
  Mostly clear, 56°13°
  20% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain showers before 7am. Partly sunny, with a high near 66. Chance of precipitation is 30%.
Night: A chance of showers and thunderstorms after 7pm. Mostly cloudy, with a low around 51. 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°–57°14°
Typical high / low
55°13° / 34°1°
Wind
18 mph29 km/h, gusts 33 mph54 km/h
UV peak
2
Wednesday, Oct 28. Thunderstorms. High 70°21°, low 48°9°. Typical 54°12° / 33°1°. Storms 0.16 in4.1 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly sunny, 55°13°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 71°22°
  Dry
3. Evening
  6 PM–midnight
  Drizzle, 62°17°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 52°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain showers before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 70. Chance of precipitation is 30%.
Night: A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 48. Chance of precipitation is 30%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
67°19°–72°22°
Low, likely
48°9°–53°12°
Typical high / low
54°12° / 33°1°
Wind
16 mph26 km/h, gusts 34 mph55 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 71°22°, low 54°12°. Typical 53°12° / 33°1°. Dry. Mostly agree. Best day outdoors this week.
1. Morning
  6 AM–noon
  Sunny, 51°11°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 57°14°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 71.
Night: A chance of rain showers after 7pm. Partly cloudy, with a low around 54. 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 71°22°).
High, likely
65°18°–71°22°
Low, likely
44°7°–54°12°
Typical high / low
53°12° / 33°1°
Wind
15 mph23 km/h, gusts 28 mph46 km/h
UV peak
4
Friday, Oct 30. Showers. High 72°22°, low 54°12°. Typical 53°12° / 32°0°. Rain 0.2 in5.1 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 61°16°
  30% chance · 0.05 in1.2 mm
2. Afternoon
  noon–6 PM
  Drizzle, 73°23°
  30% chance · 0.02 in0.5 mm
3. Evening
  6 PM–midnight
  Drizzle, 67°19°
  30% chance · 0.11 in2.9 mm
4. Overnight
  midnight–6 AM
  Cloudy, 60°16°
  40% chance · 0.24 in6.1 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 54. Chance of precipitation is 60%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
69°21°–76°24°
Low, likely
51°11°–63°17°
Typical high / low
53°12° / 32°0°
Wind
21 mph34 km/h, gusts 34 mph55 km/h
UV peak
2
Saturday, Oct 31. Drizzle. High 64°18°, low 57°14°. Typical 52°11° / 32°0°. Rain 0.57 in14 mm, 50% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 60°15°
  50% chance · 0.07 in1.9 mm
2. Afternoon
  noon–6 PM
  Drizzle, 65°18°
  50% chance · 0.05 in1.3 mm
3. Evening
  6 PM–midnight
  Drizzle, 59°15°
  50% chance · 0.16 in4 mm
4. Overnight
  midnight–6 AM
  Drizzle, 58°14°
  40% chance · 0.15 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
62°17°–67°19°
Low, likely
53°12°–60°16°
Typical high / low
52°11° / 32°0°
Wind
22 mph35 km/h, gusts 37 mph59 km/h
UV peak
2
Sunday, Nov 1. Drizzle. High 59°15°, low 46°8°. Typical 52°11° / 31°−1°. Rain 0.19 in4.8 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 55°13°
  30% chance · 0.02 in0.4 mm
2. Afternoon
  noon–6 PM
  Drizzle, 53°12°
  30% chance · 0.02 in0.5 mm
3. Evening
  6 PM–midnight
  Drizzle, 49°10°
  20% chance · 0.02 in0.4 mm
4. Overnight
  midnight–6 AM
  Drizzle, 44°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 differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
54°12°–65°18°
Low, likely
37°3°–58°14°
Typical high / low
52°11° / 31°−1°
Wind
19 mph31 km/h, gusts 28 mph46 km/h
UV peak
1
Monday, Nov 2. Drizzle. High 55°13°, low 43°6°. Typical 51°11° / 31°−1°. Rain 0.25 in6.4 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 46°8°
  30% chance · 0.01 in0.4 mm
2. Afternoon
  noon–6 PM
  Cloudy, 55°13°
  30% chance · 0.18 in4.5 mm
3. Evening
  6 PM–midnight
  Cloudy, 51°11°
  30% chance · 0.07 in1.7 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°–68°20°
Low, likely
32°0°–59°15°
Typical high / low
51°11° / 31°−1°
Wind
25 mph41 km/h, gusts 49 mph79 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 74°, low 48°.
Tomorrow
Dry, high 64°, low 43°, cooling off.
Monday
Dry, high 63°, low 50°.
Rest of week
Highs 55–72°; chance of precipitation on Saturday, Sunday.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (FSD) (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

Willow Creek (North Central IA) near Cornell

12 mi

Below flood stage

Level: 82.1 ft

Reading from Sat 2:15 PM · NWS gauge page

Little Sioux River at Linn Grove

13 mi

Below flood stage

Level: 6.1 ft
Flow: 365 cfs

Reading from Sat 2 PM · NWS gauge page

Storm Lake at Storm Lake

19 mi

Level: 13.4 ft

Reading from Sat 2 PM · NWS gauge page

Ocheyedan River near Spencer

22 mi

Below flood stage

Level: 2.7 ft
Flow: 135 cfs

Reading from Sat 1:45 PM · NWS gauge page

For your home

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

Heating this week

About 85% less heating than a typical week.

This week 22Typical 147

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 10
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 52°F).

Open the windows?

Today, 3:00 PM–7:00 PM

Good stretch to open the windows.

Is this typical?

Sioux Rapids · official normals 1991–2020 · records 1941–2026

Oct 24, today vs a typical year

Today’s expected high is 18°10° warmer than typical.

Last 7 days vs normal

On average 6°3° colder than normal (daily mean temperature).

−5°−3°SunOct 18
—MonOct 19
—TueOct 20
—WedOct 21
—ThuOct 22
—FriOct 23
—SatOct 24

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

Sun & moon

Sun

Daylight: 10 h 39 min; Losing 2 min 39 s a day; shortest Dec 21, 1 h 38 min less
Golden hour: 5:43–6:41 PM; Morning 7:26–8:23 AM
Blue hour: 6:41–6:52 PM; Morning 7:15–7:26 AM; first light 7:15 AM

Stars tonight? Poor

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

Moon

Waxing gibbous

98% lit · growing

Today: sets 5:57 AM · rises 5:22 PM
Full moon: Oct 25
New moon: Nov 9

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

Marathon, IA weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Willow Creek (North Central IA) near Cornell

Little Sioux River at Linn Grove

Storm Lake at Storm Lake

Ocheyedan River near Spencer

For your home

Heating this week

Heat-pump hours, next 7 days

Comfort

Open the windows?

Is this typical?

Oct 24, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Poor

Moon