WALNUT, IA 51577 Weather Forecast & Current Conditions
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  51577 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)
 CURRENT WEATHER

HARLAN, IA
Current Weather
1:55 AM CDT JUN 9, 2026
Clear
72°F
Feels Like: 72°F
Dewpoint: 70°F
Rel. Hum.: 93%
Visibility: 10 miles
Wind: Calm
Pressure: 29.92 inches
Last 72 hours

Local Area Snow Depth

Iowa Current Weather

Iowa MOS Forecast Weather


Weather Map

(Automated weather data from NWS/FAA)
  51577 WEATHER FORECAST
10-Day model forecast maps
2025 Hurricanes

WALNUT, IA 51577
Weather Forecast

 Snowfall Forecast pages
Snow Depth pages
REST OF TONIGHT
Mostly cloudy. Lows in the upper 60s. Southeast winds around 5 mph.
TUESDAY
Mostly sunny. Humid with highs in the lower 90s. Southeast winds 5 to 10 mph, increasing to south 15 to 20 mph in the afternoon. Heat index values up to 103 in the afternoon.
TUESDAY NIGHT
Partly cloudy with a chance of thunderstorms. A chance of showers, mainly in the evening. Humid with lows in the mid 70s. South winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 40 percent.
WEDNESDAY
Mostly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Breezy with highs in the mid 90s. Southwest winds 15 to 25 mph. Chance of rain 50 percent.
WEDNESDAY NIGHT
Mostly clear in the evening, then partly cloudy with showers with a chance of thunderstorms after midnight. Not as warm with lows in the mid 60s. West winds 5 to 10 mph with gusts up to 20 mph, becoming southeast after midnight. Chance of rain 80 percent.
THURSDAY
Showers likely with a chance of thunderstorms in the morning, then a slight chance of showers and thunderstorms in the afternoon. Not as warm with highs in the lower 80s. Chance of rain 70 percent.
THURSDAY NIGHT
Mostly clear. Lows in the upper 50s.
FRIDAY
Sunny. Highs in the mid 80s.
FRIDAY NIGHT
Mostly clear. Lows in the lower 60s.
SATURDAY
Mostly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 30 percent.
SATURDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers. A chance of thunderstorms, mainly in the evening. Lows in the upper 50s. Chance of rain 50 percent.
SUNDAY
Partly sunny with a slight chance of thunderstorms. A slight chance of showers in the morning, then a chance of showers in the afternoon. Highs in the mid 70s. Chance of rain 30 percent.
SUNDAY NIGHT
Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the mid 50s. Chance of rain 20 percent.

  51577 WEATHER SATELLITE LOOPS
Visible Weather Satellite
WALNUT, IA 51577
Infrared Weather Satellite
WALNUT, IA 51577
  51577 WEATHER RADAR LOOP
NEXRAD Weather Radar
WALNUT, IA 51577
 MOS COMPUTER WEATHER FORECAST

HARLAN, IA 3 hourly weather forecast
weather forecast created  5:00 PM PDT  6/ 8/2026
Tuesday
9 JUN 2026		 WALNUT, IA 51577 weather forecast Day 1, 0 hours 1 AM 72° 72° Mostly Cloudy 15%
RAIN
.01–.1 in		 0% Thunder
( 26% severe)		   CALM 87% 68°
Low 68° WALNUT, IA 51577 weather forecast Day 1, 3 hours 4 AM 69° 69° Mostly Cloudy   CALM 97% 68°
High 91° WALNUT, IA 51577 weather forecast Day 1, 6 hours 7 AM 70° 70° Mostly Cloudy 9%

 0% Thunder
( 19% severe)		 SE   5 100% 70°

Partly Cloudy



 WALNUT, IA 51577 weather forecast Day 1, 9 hours 10 AM 81° 86° Partly Cloudy S   10 79% 74°
WALNUT, IA 51577 weather forecast Day 1, 12 hours 1 PM 86° 94° Partly Cloudy 6%

 0% Thunder
( 20% severe)		 S   15 68% 74°
WALNUT, IA 51577 weather forecast Day 1, 15 hours 4 PM 90° 100° Partly Cloudy S   18 60% 74°
WALNUT, IA 51577 weather forecast Day 1, 18 hours 7 PM 90° 101° Partly Cloudy 20%
RAIN
.5–1 in		 0% Thunder
( 40% severe)		 SSE   17 62% 75°
WALNUT, IA 51577 weather forecast Day 1, 21 hours 10 PM 81° 85° Mostly Cloudy SSE   18 74% 72°
Wednesday
10 JUN 2026		 WALNUT, IA 51577 weather forecast Day 2, 0 hours 1 AM 79° 82° Mostly Cloudy 13%
RAIN
<.01 in		 0% Thunder
( 33% severe)		 S   17 74% 70°
Low 75° WALNUT, IA 51577 weather forecast Day 2, 3 hours 4 AM 77° 79° Partly Cloudy S   17 76% 69°
High 91° WALNUT, IA 51577 weather forecast Day 2, 6 hours 7 AM 75° 75° Partly Cloudy 11%
RAIN
<.01 in		 0% Thunder
( 33% severe)		 S   17 82% 69°

Partly Cloudy

Chance of Rain


Breezy		 WALNUT, IA 51577 weather forecast Day 2, 9 hours 10 AM 83° 88° Partly Cloudy S   21 70% 72°
WALNUT, IA 51577 weather forecast Day 2, 12 hours 1 PM 88° 93° Partly Cloudy 37%
RAIN
.1–.25 in		 0% Thunder
( 29% severe)		 SSW   20 55% 70°
WALNUT, IA 51577 weather forecast Day 2, 15 hours 4 PM 91° 93° Partly Cloudy SW   15 41% 64°
WALNUT, IA 51577 weather forecast Day 2, 18 hours 7 PM 87° 87° Clear 7%

 0% Thunder
( 12% severe)		 W   9 42% 61°
WALNUT, IA 51577 weather forecast Day 2, 21 hours 10 PM 75° 75° Clear WNW   3 52% 56°

HARLAN, IA extended weather forecast
Thursday
11 JUN 2026		 Friday
12 JUN 2026		 Saturday
13 JUN 2026		 Sunday
14 JUN 2026		 Monday
15 JUN 2026
Low 66° Low 54° Low 60° Low 60° Low 55°
High 80° High 79° High 81° High 71° High 70°
WALNUT, IA 51577 weather forecast Day 3 WALNUT, IA 51577 weather forecast Day 4 WALNUT, IA 51577 weather forecast Day 5 WALNUT, IA 51577 weather forecast Day 6 WALNUT, IA 51577 weather forecast Day 7
Overcast
63% Rain		 Clear
7% Rain		 Partly Cloudy
29% Rain		 Overcast
56% Rain		 Partly Cloudy
35% Rain
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