Johnston, IA 14 Day Weather - 50131 WeatherWorld.com
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Johnston, IA Weather Forecast


Johnston, IA Weather Forecast Dated: 620 AM Sun Sep 13 2026
Expect a mild stretch with more clouds than sun and frequent chances of rain over the coming period. generally humid conditions and no major pressure swings will dominate.
Sunday, September 13, 2026
Mid-Morning
61°F 16°C
Cloudy
Mid-Afternoon
74°F 23°C
Overcast
Early-Evening
67°F 19°C
Sunny
Pleasant near 74°F 23°C, cloudy in the morning, overcast in the afternoon, and sunny this evening, with steady humidity and steady pressure. Winds turning from the NE to the E at 10 mph 16 km/h.
Monday, September 14, 2026
Mid-Morning
56°F 13°C
Light Showers
Mid-Afternoon
71°F 21°C
Light Showers
Early-Evening
78°F 26°C
Scattered Showers
Comfortable with temperatures reaching 71°F 21°C, scattered downpours possible, with lower humidity and barometric pressure falling. Winds switching from the SE to the S at 13 mph 21 km/h. Gusts up to 24 mph 37 km/h.
Tuesday, September 15, 2026
Mid-Morning
68°F 20°C
Light Showers
Mid-Afternoon
64°F 18°C
Light Showers
Early-Evening
65°F 18°C
Light Showers
Comfortable at 64°F 18°C, on-and-off showers throughout the day, with lower humidity and barometric pressure rising.
Wednesday, September 16, 2026
Mid-Morning
59°F 15°C
Light Showers
Mid-Afternoon
62°F 16°C
Heavy Rain Showers
Early-Evening
61°F 16°C
Light Fog
Cool with a high near 62°F 16°C, intermittent showers through midday, easing by evening, with increasing humidity and steady pressure. Winds moving from the E to the ENE at 8 mph 13 km/h.
Thursday, September 17, 2026
Mid-Morning
62°F 17°C
Light Showers
Mid-Afternoon
70°F 21°C
Scattered Showers
Early-Evening
69°F 21°C
Overcast
Mild with a high of 70°F 21°C, scattered downpours possible, with steady humidity and steady pressure.
Friday, September 18, 2026
Mid-Morning
64°F 18°C
Light Showers
Mid-Afternoon
69°F 21°C
Scattered Showers
Early-Evening
69°F 21°C
Light Showers
Pleasant near 69°F 21°C, locally heavy downpours at times, with steady humidity and barometric pressure falling. Winds swinging from the ESE to the E at 11 mph 18 km/h. Gusts up to 22 mph 35 km/h.
Saturday, September 19, 2026
Mid-Morning
68°F 20°C
Fog
Mid-Afternoon
65°F 19°C
Scattered Showers
Early-Evening
63°F 17°C
Light Showers
Comfortable at 65°F 19°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds shifting from the SSE to the NW at 9 mph 15 km/h.
Sunday, September 20, 2026
Mid-Morning
58°F 15°C
Overcast
Mid-Afternoon
62°F 17°C
Scattered Showers
Early-Evening
64°F 18°C
Scattered Showers
Cool with a high near 62°F 17°C, scattered downpours possible, with lower humidity and steady pressure. Winds turning from the NNE to the NE at 8 mph 13 km/h. Gusts up to 23 mph 37 km/h.
Monday, September 21, 2026
Mid-Morning
60°F 16°C
Sunny
Mid-Afternoon
69°F 20°C
Partly Cloudy
Early-Evening
64°F 18°C
Overcast
Mild temperatures up to 69°F 20°C, sunny in the morning, becoming cloudy through the afternoon and evening, with steady humidity and steady pressure. Winds switching from the ENE to the NE at 10 mph 16 km/h. Gusts up to 21 mph 33 km/h.
Tuesday, September 22, 2026
Mid-Morning
58°F 14°C
Sunny
Mid-Afternoon
66°F 19°C
Overcast
Early-Evening
63°F 17°C
Overcast
Mildly cool near 66°F 19°C, sunny in the morning, becoming overcast through the afternoon and evening, with steady humidity and steady pressure. Winds moving from the NE to the NNE at 9 mph 15 km/h.
Wednesday, September 23, 2026
Mid-Morning
56°F 14°C
Light Fog
Mid-Afternoon
62°F 17°C
Cloudy
Early-Evening
61°F 16°C
Scattered Showers
Comfortable at 62°F 17°C, scattered downpours possible, with steady humidity and steady pressure. Winds swinging from the NNE to the E at 7 mph 11 km/h.
Thursday, September 24, 2026
Mid-Morning
62°F 16°C
Fog
Mid-Afternoon
69°F 21°C
Scattered Showers
Early-Evening
70°F 21°C
Scattered Showers
Comfortable with temperatures reaching 69°F 21°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds out of the SSE at 9 mph 15 km/h.
Friday, September 25, 2026
Mid-Morning
68°F 20°C
Light Fog
Mid-Afternoon
82°F 28°C
Sunny
Early-Evening
78°F 26°C
Sunny
Quite warm around 82°F 28°C, sunny throughout the day, with steady humidity and steady pressure. Winds blowing from the SSW at 12 mph 20 km/h.
Saturday, September 26, 2026
Mid-Morning
72°F 22°C
Sunny
Mid-Afternoon
84°F 29°C
Sunny
Early-Evening
79°F 26°C
Sunny
Quite warm reaching 84°F 29°C, feeling like 87°F 30°C during peak afternoon, sunny throughout the day, with steady humidity and barometric pressure falling. Winds switching from the SSE to the SE at 15 mph 25 km/h. Gusts up to 32 mph 51 km/h.
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