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Keystone IA Weather - Partly Cloudy - 80°F
Partly Cloudy
80°F
Updated 4:01 pm
Feels Like 86°F
Humidity 61%
Wind E 13 mph
Barometer  30.05 in
Dew Point 66°F
Keystone IA Weather - Partly Cloudy - 27°C
Partly Cloudy
27°C
Updated 4:01 pm
Feels Like 30°C
Humidity 61%
Wind E 21 km/h
Barometer  101.8 kPa
Dew Point 19°C
Keystone, IA Weather and Current Conditionskeystone ia weather forecast

Keystone, IA Weather Forecast

Keystone Iowa WeatherKeystone, Iowa Weather Weather Forecast
14 day API forecast for Keystone, Iowa. Note. The 7-day weather forecast for Keystone, IA is the most reliable and accurate forecast. This model should only be used as a likely scenario. It is difficult to predict weather more than 7 days in advance.
Keystone, IA Weather Forecast Dated: 401 PM Sun Sep 06 2026
Expect a very warm period with a mix of sun and clouds and frequent chances of rain over the coming period. moderate humidity and no major pressure swings will dominate.

Sunday, September 6, 2026

Mid-Morning
Keystone Weather - 2026-09-06 - Morning - Partly Cloudy
73°F 23°C
Partly Cloudy
Mid-Afternoon
Keystone Weather - 2026-09-06 - Afternoon - Overcast
85°F 29°C
Overcast
Early-Evening
Keystone Weather - 2026-09-06 - Evening - Overcast
79°F 26°C
Overcast
Warm and summery near 85°F 29°C, partly cloudy in the morning, becoming overcast through the afternoon and evening, with lower humidity and steady pressure. Winds turning from the ESE to the E at 11 mph 18 km/h.

Monday, September 7, 2026

Mid-Morning
Keystone Weather - 2026-09-07 - Morning - Partly Cloudy
68°F 20°C
Partly Cloudy
Mid-Afternoon
Keystone Weather - 2026-09-07 - Afternoon - Overcast
84°F 29°C
Overcast
Early-Evening
Keystone Weather - 2026-09-07 - Evening - Overcast
76°F 25°C
Overcast
Balmy with temperatures reaching 84°F 29°C, cloudy in the morning, overcast in the afternoon, and cloudy this evening, with lower humidity and barometric pressure falling. Winds blowing from the SE at 15 mph 23 km/h. Gusts up to 25 mph 41 km/h.

Tuesday, September 8, 2026

Mid-Morning
Keystone Weather - 2026-09-08 - Morning - Overcast
71°F 22°C
Overcast
Mid-Afternoon
Keystone Weather - 2026-09-08 - Afternoon - Overcast
93°F 34°C
Overcast
Early-Evening
Keystone Weather - 2026-09-08 - Evening - Overcast
80°F 26°C
Overcast
Sizzling hot with 93°F 34°C, overcast throughout the day, with increasing humidity and steady pressure. Winds moving from the SSE to the WSW at 8 mph 12 km/h.

Wednesday, September 9, 2026

Mid-Morning
Keystone Weather - 2026-09-09 - Morning - Light Fog
69°F 21°C
Light Fog
Mid-Afternoon
Keystone Weather - 2026-09-09 - Afternoon - Overcast
85°F 29°C
Overcast
Early-Evening
Keystone Weather - 2026-09-09 - Evening - Scattered Showers
77°F 25°C
Scattered Showers
Warm temperatures up to 85°F 29°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure. Winds swinging from the SW to the NNW at 10 mph 15 km/h. Gusts up to 23 mph 37 km/h.

Thursday, September 10, 2026

Mid-Morning
Keystone Weather - 2026-09-10 - Morning - Sunny
64°F 18°C
Sunny
Mid-Afternoon
Keystone Weather - 2026-09-10 - Afternoon - Sunny
78°F 26°C
Sunny
Early-Evening
Keystone Weather - 2026-09-10 - Evening - Sunny
72°F 22°C
Sunny
Mild with a high of 78°F 26°C, sunny throughout the day, with steady humidity and steady pressure.

Friday, September 11, 2026

Mid-Morning
Keystone Weather - 2026-09-11 - Morning - Overcast
68°F 20°C
Overcast
Mid-Afternoon
Keystone Weather - 2026-09-11 - Afternoon - Overcast
89°F 32°C
Overcast
Early-Evening
Keystone Weather - 2026-09-11 - Evening - Overcast
77°F 25°C
Overcast
Warm and summery near 89°F 32°C, cloudy in the morning, becoming overcast through the afternoon and evening, with increasing humidity and barometric pressure falling. Winds shifting from the S to the SSE at 17 mph 27 km/h. Gusts up to 31 mph 49 km/h.

Saturday, September 12, 2026

Mid-Morning
Keystone Weather - 2026-09-12 - Morning - Fog
69°F 20°C
Fog
Mid-Afternoon
Keystone Weather - 2026-09-12 - Afternoon - Sunny
84°F 29°C
Sunny
Early-Evening
Keystone Weather - 2026-09-12 - Evening - Overcast
82°F 28°C
Overcast
Balmy with temperatures reaching 84°F 29°C, partly cloudy in the morning, becoming cloudy through the afternoon and evening, with lower humidity and barometric pressure falling. Winds turning from the SSW to the SE at 10 mph 16 km/h. Gusts up to 21 mph 33 km/h.

Sunday, September 13, 2026

Mid-Morning
Keystone Weather - 2026-09-13 - Morning - Scattered Showers
73°F 23°C
Scattered Showers
Mid-Afternoon
Keystone Weather - 2026-09-13 - Afternoon - Cloudy
91°F 33°C
Cloudy
Early-Evening
Keystone Weather - 2026-09-13 - Evening - Nearby Thunderstorms
79°F 27°C
Nearby Thunderstorms
Sizzling hot with 91°F 33°C, scattered downpours possible, with lower humidity and steady pressure. Winds switching from the ESE to the ENE at 14 mph 22 km/h. Gusts up to 23 mph 37 km/h.

Monday, September 14, 2026

Mid-Morning
Keystone Weather - 2026-09-14 - Morning - Light Fog
71°F 22°C
Light Fog
Mid-Afternoon
Keystone Weather - 2026-09-14 - Afternoon - Scattered Showers
73°F 23°C
Scattered Showers
Early-Evening
Keystone Weather - 2026-09-14 - Evening - Overcast
61°F 17°C
Overcast
Mild temperatures up to 73°F 23°C, locally heavy downpours at times, with steady humidity and barometric pressure rising. Winds moving from the W to the NNW at 14 mph 23 km/h. Gusts up to 20 mph 33 km/h.

Tuesday, September 15, 2026

Mid-Morning
Keystone Weather - 2026-09-15 - Morning - Sunny
56°F 13°C
Sunny
Mid-Afternoon
Keystone Weather - 2026-09-15 - Afternoon - Sunny
69°F 21°C
Sunny
Early-Evening
Keystone Weather - 2026-09-15 - Evening - Overcast
67°F 20°C
Overcast
Mild with a high of 69°F 21°C, sunny in the morning, cloudy in the afternoon, and overcast this evening, with lower humidity and steady pressure. Winds swinging from the ESE to the ENE at 7 mph 11 km/h.

Wednesday, September 16, 2026

Mid-Morning
Keystone Weather - 2026-09-16 - Morning - Light Showers
57°F 14°C
Light Showers
Mid-Afternoon
Keystone Weather - 2026-09-16 - Afternoon - Scattered Showers
65°F 18°C
Scattered Showers
Early-Evening
Keystone Weather - 2026-09-16 - Evening - Overcast
65°F 18°C
Overcast
Comfortable at 65°F 18°C, scattered downpours possible, with steady humidity and steady pressure. Winds shifting from the SSE to the SW at 6 mph 10 km/h.

Thursday, September 17, 2026

Mid-Morning
Keystone Weather - 2026-09-17 - Morning - Sunny
54°F 12°C
Sunny
Mid-Afternoon
Keystone Weather - 2026-09-17 - Afternoon - Overcast
68°F 20°C
Overcast
Early-Evening
Keystone Weather - 2026-09-17 - Evening - Overcast
65°F 18°C
Overcast
Comfortable with temperatures reaching 68°F 20°C, cloudy in the morning, becoming overcast through the afternoon and evening, with lower humidity and steady pressure. Winds turning from the SE to the ENE at 8 mph 13 km/h.

Friday, September 18, 2026

Mid-Morning
Keystone Weather - 2026-09-18 - Morning - Fog
62°F 16°C
Fog
Mid-Afternoon
Keystone Weather - 2026-09-18 - Afternoon - Sunny
78°F 26°C
Sunny
Early-Evening
Keystone Weather - 2026-09-18 - Evening - Sunny
76°F 25°C
Sunny
Enjoyable around 78°F 26°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure falling. Winds switching from the SE to the SSE at 11 mph 18 km/h. Gusts up to 24 mph 38 km/h.

Saturday, September 19, 2026

Mid-Morning
Keystone Weather - 2026-09-19 - Morning - Scattered Showers
72°F 22°C
Scattered Showers
Mid-Afternoon
Keystone Weather - 2026-09-19 - Afternoon - Scattered Showers
93°F 34°C
Scattered Showers
Early-Evening
Keystone Weather - 2026-09-19 - Evening - Cloudy
79°F 26°C
Cloudy
Hot temperatures near 93°F 34°C, scattered downpours possible, with lower humidity and steady pressure. Winds moving from the S to the NW at 18 mph 28 km/h. Gusts up to 30 mph 49 km/h.

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Weather by the Numbers

Sun, 6th
Keystone IA Weather - Sunday, Sep 6, 2026 - Overcast
Hi: 85°F 30°C
Lo: 68°F 20°C
Sunrise 06:40 AM
Sunset 07:34 PM
Wind ESE 9 mph14 km/h
Dew Point 69°F21°C
uv Index 7
Barometric Pressure 30.03 in1017 mb
POP 15% *
Humidity 67%
Mon, 7th
Keystone IA Weather - Monday, Sep 7, 2026 - Overcast
Hi: 84°F 29°C
Lo: 64°F 18°C
Sunrise 06:41 AM
Sunset 07:32 PM
Wind SSE 13 mph22 km/h
Dew Point 50°F10°C
uv Index 7
Barometric Pressure 30.09 in1019 mb
POP 9% *
Humidity 36%
Tue, 8th
Keystone IA Weather - Tuesday, Sep 8, 2026 - Cloudy
Hi: 93°F 34°C
Lo: 66°F 19°C
Sunrise 06:42 AM
Sunset 07:30 PM
Wind S 17 mph27 km/h
Dew Point 55°F13°C
uv Index 6
Barometric Pressure 29.94 in1014 mb
POP 8% *
Humidity 35%
Wed, 9th
Keystone IA Weather - Wednesday, Sep 9, 2026 - Light Rain Shower
Hi: 85°F 29°C
Lo: 67°F 20°C
Sunrise 06:43 AM
Sunset 07:29 PM
Wind NW 6 mph9 km/h
Dew Point 69°F21°C
uv Index 5
Barometric Pressure 29.94 in1014 mb
POP 55% *
Humidity 79%
Thu, 10th
Keystone IA Weather - Thursday, Sep 10, 2026 - Sunny
Hi: 78°F 26°C
Lo: 60°F 16°C
Sunrise 06:44 AM
Sunset 07:27 PM
Wind NNW 6 mph10 km/h
Dew Point 45°F7°C
uv Index 6
Barometric Pressure 30.03 in1017 mb
POP 1% *
Humidity 35%
Fri, 11th
Keystone IA Weather - Friday, Sep 11, 2026 - Partly Cloudy
Hi: 91°F 33°C
Lo: 61°F 16°C
Sunrise 06:45 AM
Sunset 07:25 PM
Wind SSW 18 mph29 km/h
Dew Point 46°F8°C
uv Index 7
Barometric Pressure 29.85 in1011 mb
POP 7% *
Humidity 31%
Sat, 12th
Keystone IA Weather - Saturday, Sep 12, 2026 - Sunny
Hi: 86°F 30°C
Lo: 66°F 19°C
Sunrise 06:46 AM
Sunset 07:24 PM
Wind S 6 mph10 km/h
Dew Point 63°F17°C
uv Index 7
Barometric Pressure 29.85 in1011 mb
POP 3% *
Humidity 61%
Sun, 13th
Keystone IA Weather - Sunday, Sep 13, 2026 - Partly Cloudy
Hi: 94°F 34°C
Lo: 71°F 22°C
Sunrise 06:47 AM
Sunset 07:22 PM
Wind SSE 11 mph17 km/h
Dew Point 68°F20°C
uv Index 7
Barometric Pressure 29.71 in1006 mb
POP 9% *
Humidity 67%
Mon, 14th
Keystone IA Weather - Monday, Sep 14, 2026 - Patchy Rain Nearby
Hi: 74°F 23°C
Lo: 55°F 13°C
Sunrise 06:48 AM
Sunset 07:20 PM
Wind WNW 13 mph22 km/h
Dew Point 64°F18°C
uv Index 5
Barometric Pressure 29.88 in1012 mb
POP 15% *
Humidity 71%
Tue, 15th
Keystone IA Weather - Tuesday, Sep 15, 2026 - Sunny
Hi: 70°F 21°C
Lo: 52°F 11°C
Sunrise 06:49 AM
Sunset 07:18 PM
Wind SW 8 mph13 km/h
Dew Point 46°F8°C
uv Index 5
Barometric Pressure 30.09 in1019 mb
POP 2% *
Humidity 51%
Wed, 16th
Keystone IA Weather - Wednesday, Sep 16, 2026 - Overcast
Hi: 66°F 19°C
Lo: 57°F 14°C
Sunrise 06:50 AM
Sunset 07:16 PM
Wind S 10 mph15 km/h
Dew Point 55°F13°C
uv Index 4
Barometric Pressure 30.09 in1019 mb
POP 27% *
Humidity 86%
Thu, 17th
Keystone IA Weather - Thursday, Sep 17, 2026 - Cloudy
Hi: 69°F 20°C
Lo: 52°F 11°C
Sunrise 06:51 AM
Sunset 07:15 PM
Wind NE 11 mph17 km/h
Dew Point 48°F9°C
uv Index 4
Barometric Pressure 30.27 in1025 mb
POP 13% *
Humidity 61%
Fri, 18th
Keystone IA Weather - Friday, Sep 18, 2026 - Sunny
Hi: 80°F 26°C
Lo: 56°F 13°C
Sunrise 06:52 AM
Sunset 07:13 PM
Wind SE 11 mph18 km/h
Dew Point 55°F13°C
uv Index 6
Barometric Pressure 30.09 in1019 mb
POP 3% *
Humidity 57%
Sat, 19th
Keystone IA Weather - Saturday, Sep 19, 2026 - Overcast
Hi: 95°F 35°C
Lo: 60°F 16°C
Sunrise 06:53 AM
Sunset 07:11 PM
Wind SSW 19 mph30 km/h
Dew Point 63°F17°C
uv Index 6
Barometric Pressure 29.68 in1005 mb
POP 17% *
Humidity 51%
* POP = Probability of Precipitation. Data for 12:00 PM.