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Johnston, IA
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7-Day Forecast
This Afternoon
Chance Showers
High: 65°
A 30% chance of showers.
Cloudy with a high near 65.
Southeast wind around 11 mph.
New precipitation amounts of less than a tenth of an inch possible.
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Tonight
Chance Showers then Chance T-storms
Low: 52°
A chance of showers with thunderstorms also possible after 7pm.
Cloudy with a low around 52.
East southeast wind 5 to 8 mph becoming light and variable after midnight.
Chance of precipitation is 40%.
New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
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Thursday
Chance Showers then Chance T-storms
High: 67°
A chance of showers and thunderstorms before noon,
then a chance of showers
between noon and 1pm,
then a chance of showers and thunderstorms after 1pm.
Mostly cloudy with a high near 67.
Light northwest wind increasing
to 5 to 10 mph in the morning.
Chance of precipitation is 50%.
New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
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Thursday Night
Slight Chance T-storms then Mostly Clear
Low: 46°
A slight chance of showers and thunderstorms before 7pm,
then a slight chance of showers
between 7pm and 8pm.
Partly cloudy with a low around 46.
Northwest wind 6 to 11 mph.
Chance of precipitation is 20%.
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Friday
Chance Showers
High: 64°
A chance of showers before 10am,
then a chance of showers and thunderstorms
between 10am and 1pm,
then a chance of showers after 1pm.
Partly sunny with a high near 64.
North northwest wind 6 to 10 mph
with gusts as high as 18 mph.
Chance of precipitation is 40%.
New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
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Friday Night
Mostly Clear
Low: 42°
Mostly clear with a low around 42.
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Saturday
Sunny
High: 68°
Sunny with a high near 68.
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Saturday Night
Mostly Clear
Low: 46°
Mostly clear with a low around 46.
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Sunday
Sunny
High: 73°
Sunny with a high near 73.
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Sunday Night
Mostly Clear
Low: 49°
Mostly clear with a low around 49.
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Monday
Sunny
High: 75°
Sunny with a high near 75.
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Monday Night
Partly Cloudy
Low: 51°
Partly cloudy with a low around 51.
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Tuesday
Mostly Sunny
High: 78°
Mostly sunny with a high near 78.
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Source: National Weather Service
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