GRINNELL, IA 50112 Weather Forecast & Current Conditions

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NEWTON_MUNI, IA
Current Weather

3:35 AM CDT JUL 16, 2025
Broken Clouds
72°F
Feels Like: 72°F
Dewpoint: 70°F
Rel. Hum.: 93%
Visibility: 8 miles
Wind: SE at 9 mph
Pressure: 29.81 inches
Last 72 hours

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GRINNELL, IA 50112
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TODAY
Mostly cloudy with a chance of showers. A slight chance of thunderstorms after midnight, then a chance of thunderstorms. Humid with highs in the mid 80s. South winds around 5 mph, becoming west this afternoon. Chance of rain 50 percent.
TONIGHT
Mostly cloudy. A chance of showers and thunderstorms in the evening. Humid with lows in the upper 50s. Northwest winds 5 to 10 mph. Chance of rain 40 percent.
THURSDAY
Mostly cloudy in the morning, then becoming partly sunny. Highs in the lower 70s. North winds 5 to 10 mph.
THURSDAY NIGHT
Partly cloudy. Lows in the upper 50s. Northeast winds around 5 mph.
FRIDAY
Partly sunny in the morning, then becoming mostly cloudy. A slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 70s. Southeast winds around 5 mph. Chance of rain 20 percent.
FRIDAY NIGHT
Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then showers likely with a chance of thunderstorms after midnight. Lows in the upper 60s. Chance of rain 60 percent.
SATURDAY
Mostly cloudy in the morning, then becoming partly sunny. A chance of showers and thunderstorms. Highs in the mid 80s. Chance of rain 50 percent.
SATURDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. A chance of thunderstorms. A chance of showers. Lows in the upper 60s. Chance of rain 40 percent.
SUNDAY
Mostly cloudy with a chance of showers and thunderstorms in the morning, then partly sunny with a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 40 percent.
SUNDAY NIGHT
Mostly cloudy with a chance of showers. A slight chance of thunderstorms in the evening, then a chance of thunderstorms after midnight. Lows in the upper 60s. Chance of rain 50 percent.
MONDAY
Partly sunny. A slight chance of showers and thunderstorms in the morning. Highs in the mid 80s. Chance of rain 20 percent.
MONDAY NIGHT
Mostly clear in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the lower 70s. Chance of rain 20 percent.
TUESDAY
Mostly sunny. A slight chance of showers and thunderstorms in the morning. Highs around 90. Chance of rain 20 percent. Heat index values up to 100 in the afternoon.

Visible Weather Satellite
GRINNELL, IA 50112
Infrared Weather Satellite
GRINNELL, IA 50112
NEXRAD Weather Radar
GRINNELL, IA 50112

NEWTON_MUNI, IA 3 hourly weather forecast

weather forecast created  8:00 PM EDT  7/15/2025
Wednesday
16 JUL 2025
GRINNELL, IA 50112 weather forecast Day 1, 0 hours 1 AM 72° 72° Partly Cloudy 28%
RAIN
***
0% Thunder
( 23% severe)
SSE   7 93% 70°
Low 70° GRINNELL, IA 50112 weather forecast Day 1, 3 hours 4 AM 71° 71° Partly Cloudy SSE   7 93% 69°
High 83° GRINNELL, IA 50112 weather forecast Day 1, 6 hours 7 AM 72° 72° Mostly Cloudy 39%
RAIN
>2 in
0% Thunder
( 37% severe)
SSE   8 97% 71°

Mostly Cloudy

Chance of Rain

GRINNELL, IA 50112 weather forecast Day 1, 9 hours 10 AM 78° 80° Mostly Cloudy SW   9 82% 72°
GRINNELL, IA 50112 weather forecast Day 1, 12 hours 1 PM 80° 85° Mostly Cloudy 37%
RAIN
.5–1 in
0% Thunder
( 43% severe)
W   9 82% 74°
GRINNELL, IA 50112 weather forecast Day 1, 15 hours 4 PM 80° 84° Partly Cloudy WNW   10 79% 73°
GRINNELL, IA 50112 weather forecast Day 1, 18 hours 7 PM 77° 78° Partly Cloudy 41%
RAIN
.01–.1 in
0% Thunder
( 25% severe)
NNW   9 85% 72°
GRINNELL, IA 50112 weather forecast Day 1, 21 hours 10 PM 70° 70° Mostly Cloudy NNW   9 97% 69°
Thursday
17 JUL 2025
GRINNELL, IA 50112 weather forecast Day 2, 0 hours 1 AM 66° 66° Mostly Cloudy 20%
RAIN
.01–.1 in
0% Thunder
( 18% severe)
N   10 97% 65°
Low 60° GRINNELL, IA 50112 weather forecast Day 2, 3 hours 4 AM 63° 62° Mostly Cloudy N   12 93% 61°
High 73° GRINNELL, IA 50112 weather forecast Day 2, 6 hours 7 AM 61° 59° Mostly Cloudy 3%

0% Thunder
( 4% severe)
N   13 97% 60°

Mostly Cloudy



GRINNELL, IA 50112 weather forecast Day 2, 9 hours 10 AM 66° 66° Mostly Cloudy N   13 78% 59°
GRINNELL, IA 50112 weather forecast Day 2, 12 hours 1 PM 70° 70° Mostly Cloudy 3%

0% Thunder
( 1% severe)
NNE   12 76% 62°
GRINNELL, IA 50112 weather forecast Day 2, 15 hours 4 PM 72° 72° Mostly Cloudy NE   9 71% 62°
GRINNELL, IA 50112 weather forecast Day 2, 18 hours 7 PM 71° 71° Partly Cloudy 2%

0% Thunder
( 0% severe)
NE   8 73% 62°
GRINNELL, IA 50112 weather forecast Day 2, 21 hours 10 PM 65° 65° Partly Cloudy ENE   6 90% 62°

NEWTON_MUNI, IA extended weather forecast

BAD DAY
BAD DATE
BAD DAY
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Low 61° Low 60° Low 67° Low 70° Low 67°
High 71° High 77° High 87° High 85° High 82°
GRINNELL, IA 50112 weather forecast Day 3 GRINNELL, IA 50112 weather forecast Day 4 GRINNELL, IA 50112 weather forecast Day 5 GRINNELL, IA 50112 weather forecast Day 6 GRINNELL, IA 50112 weather forecast Day 7
Overcast
48% Rain
Partly Cloudy
14% Rain
Overcast
58% Rain
Partly Cloudy
49% Rain
Overcast
47% Rain
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