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Mason SD Weather - Clear - 82°F
Clear
82°F
Updated 9:00 pm
Feels Like 77°F
Humidity 30%
Wind S 15 mph
Barometer  29.99 in
Dew Point 48°F
Mason SD Weather - Clear - 28°C
Clear
28°C
Updated 9:00 pm
Feels Like 25°C
Humidity 30%
Wind S 24 km/h
Barometer  101.5 kPa
Dew Point 9°C
Mason, SD Weather and Current Conditionsmason sd weather forecast

Mason, SD Weather Forecast

Mason South Dakota WeatherMason, South Dakota Weather Weather Forecast
14 day API forecast for Mason, South Dakota. Note. The 7-day weather forecast for Mason, SD 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.
Mason, SD Weather Forecast Dated: 900 PM Sat Sep 05 2026
Expect a mild stretch with a mix of sun and clouds and mostly dry weather over the coming period. comfortable humidity and no major pressure swings will dominate.

Saturday, September 5, 2026

Mid-Morning
Mason Weather - 2026-09-05 - Morning - Sunny
75°F 24°C
Sunny
Mid-Afternoon
Mason Weather - 2026-09-05 - Afternoon - Sunny
95°F 35°C
Sunny
Early-Evening
Mason Weather - 2026-09-05 - Evening - Overcast
90°F 32°C
Overcast
Very hot with temperatures reaching 95°F 35°C, sunny through the afternoon, turning overcast this evening, with steady humidity and steady pressure. Winds turning from the NW to the ENE at 11 mph 17 km/h.

Sunday, September 6, 2026

Mid-Morning
Mason Weather - 2026-09-06 - Morning - Sunny
79°F 26°C
Sunny
Mid-Afternoon
Mason Weather - 2026-09-06 - Afternoon - Sunny
97°F 36°C
Sunny
Early-Evening
Mason Weather - 2026-09-06 - Evening - Overcast
89°F 32°C
Overcast
Hot and sweltering around 97°F 36°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and barometric pressure falling. Winds building from WNW at 3 mph 5 km/h to SE at 13 mph 20 km/h. Gusts up to 21 mph 34 km/h.

Monday, September 7, 2026

Mid-Morning
Mason Weather - 2026-09-07 - Morning - Scattered Showers
76°F 25°C
Scattered Showers
Mid-Afternoon
Mason Weather - 2026-09-07 - Afternoon - Cloudy
93°F 34°C
Cloudy
Early-Evening
Mason Weather - 2026-09-07 - Evening - Overcast
82°F 28°C
Overcast
Sizzling hot with 93°F 34°C, locally heavy downpours at times, with lower humidity and steady pressure. Winds moving from the SSW to the NW at 6 mph 9 km/h.

Tuesday, September 8, 2026

Mid-Morning
Mason Weather - 2026-09-08 - Morning - Sunny
68°F 20°C
Sunny
Mid-Afternoon
Mason Weather - 2026-09-08 - Afternoon - Sunny
82°F 28°C
Sunny
Early-Evening
Mason Weather - 2026-09-08 - Evening - Sunny
73°F 23°C
Sunny
Warm temperatures up to 82°F 28°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure. Winds swinging from the WNW to the NE at 10 mph 16 km/h.

Wednesday, September 9, 2026

Mid-Morning
Mason Weather - 2026-09-09 - Morning - Sunny
66°F 19°C
Sunny
Mid-Afternoon
Mason Weather - 2026-09-09 - Afternoon - Sunny
83°F 28°C
Sunny
Early-Evening
Mason Weather - 2026-09-09 - Evening - Partly Cloudy
75°F 24°C
Partly Cloudy
Very warm with a high of 83°F 28°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and barometric pressure falling. Winds shifting from the WNW to the NW at 12 mph 19 km/h.

Thursday, September 10, 2026

Mid-Morning
Mason Weather - 2026-09-10 - Morning - Overcast
79°F 26°C
Overcast
Mid-Afternoon
Mason Weather - 2026-09-10 - Afternoon - Sunny
92°F 33°C
Sunny
Early-Evening
Mason Weather - 2026-09-10 - Evening - Overcast
79°F 26°C
Overcast
Very hot with temperatures reaching 92°F 33°C, overcast in the morning, sunny in the afternoon, and partly cloudy this evening, with steady humidity and barometric pressure falling. Winds turning from the SW to the E at 9 mph 15 km/h.

Friday, September 11, 2026

Mid-Morning
Mason Weather - 2026-09-11 - Morning - Sunny
63°F 17°C
Sunny
Mid-Afternoon
Mason Weather - 2026-09-11 - Afternoon - Sunny
83°F 28°C
Sunny
Early-Evening
Mason Weather - 2026-09-11 - Evening - Sunny
57°F 14°C
Sunny
Balmy with temperatures reaching 83°F 28°C, sunny through the afternoon, turning cloudy this evening, with steady humidity and barometric pressure rising. Winds picking up from E at 15 mph 24 km/h to NW at 24 mph 39 km/h. Gusts up to 35 mph 56 km/h.

Saturday, September 12, 2026

Mid-Morning
Mason Weather - 2026-09-12 - Morning - Sunny
51°F 11°C
Sunny
Mid-Afternoon
Mason Weather - 2026-09-12 - Afternoon - Sunny
63°F 17°C
Sunny
Early-Evening
Mason Weather - 2026-09-12 - Evening - Overcast
60°F 15°C
Overcast
Cool with a high near 63°F 17°C, sunny through the afternoon, turning overcast this evening, with lower humidity and steady pressure. Winds moving from the NW to the NE at 9 mph 14 km/h.

Sunday, September 13, 2026

Mid-Morning
Mason Weather - 2026-09-13 - Morning - Light Showers
46°F 8°C
Light Showers
Mid-Afternoon
Mason Weather - 2026-09-13 - Afternoon - Light Showers
45°F 7°C
Light Showers
Early-Evening
Mason Weather - 2026-09-13 - Evening - Scattered Showers
47°F 8°C
Scattered Showers
Brisk around 45°F 7°C, locally heavy downpours at times, with steady humidity and barometric pressure rising. Winds swinging from the NE to the W at 8 mph 13 km/h.

Monday, September 14, 2026

Mid-Morning
Mason Weather - 2026-09-14 - Morning - Sunny
51°F 11°C
Sunny
Mid-Afternoon
Mason Weather - 2026-09-14 - Afternoon - Sunny
62°F 17°C
Sunny
Early-Evening
Mason Weather - 2026-09-14 - Evening - Sunny
57°F 14°C
Sunny
Mildly cool near 62°F 17°C, sunny throughout the day, with lower humidity and steady pressure. Winds shifting from the W to the SE at 6 mph 10 km/h.

Tuesday, September 15, 2026

Mid-Morning
Mason Weather - 2026-09-15 - Morning - Sunny
55°F 13°C
Sunny
Mid-Afternoon
Mason Weather - 2026-09-15 - Afternoon - Sunny
72°F 22°C
Sunny
Early-Evening
Mason Weather - 2026-09-15 - Evening - Sunny
64°F 18°C
Sunny
Pleasant near 72°F 22°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with steady humidity and barometric pressure falling. Winds blowing from the ESE at 7 mph 12 km/h.

Wednesday, September 16, 2026

Mid-Morning
Mason Weather - 2026-09-16 - Morning - Sunny
59°F 15°C
Sunny
Mid-Afternoon
Mason Weather - 2026-09-16 - Afternoon - Overcast
77°F 25°C
Overcast
Early-Evening
Mason Weather - 2026-09-16 - Evening - Overcast
68°F 20°C
Overcast
Comfortable with temperatures reaching 77°F 25°C, sunny in the morning, overcast in the afternoon, and cloudy this evening, with steady humidity and barometric pressure falling. Winds switching from the E to the ESE at 7 mph 12 km/h.

Thursday, September 17, 2026

Mid-Morning
Mason Weather - 2026-09-17 - Morning - Sunny
62°F 16°C
Sunny
Mid-Afternoon
Mason Weather - 2026-09-17 - Afternoon - Sunny
76°F 25°C
Sunny
Early-Evening
Mason Weather - 2026-09-17 - Evening - Overcast
70°F 21°C
Overcast
Enjoyable around 76°F 25°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and barometric pressure falling. Winds picking up from ESE at 12 mph 19 km/h to ESE at 20 mph 33 km/h. Gusts up to 35 mph 56 km/h.

Friday, September 18, 2026

Mid-Morning
Mason Weather - 2026-09-18 - Morning - Overcast
62°F 17°C
Overcast
Mid-Afternoon
Mason Weather - 2026-09-18 - Afternoon - Overcast
75°F 24°C
Overcast
Early-Evening
Mason Weather - 2026-09-18 - Evening - Overcast
67°F 20°C
Overcast
Mild temperatures up to 75°F 24°C, overcast through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure. Winds tapering down from WNW 16 mph 26 km/h to NNW 8 mph 13 km/h.

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Weather by the Numbers

Sat, 5th
Mason SD Weather - Saturday, Sep 5, 2026 - Sunny
Hi: 95°F 35°C
Lo: 69°F 21°C
Sunrise 06:22 AM
Sunset 07:25 PM
Wind NE 5 mph9 km/h
Dew Point 41°F5°C
uv Index 7
Barometric Pressure 29.77 in1008 mb
POP 0% *
Humidity 19%
Sun, 6th
Mason SD Weather - Sunday, Sep 6, 2026 - Sunny
Hi: 98°F 36°C
Lo: 68°F 20°C
Sunrise 06:24 AM
Sunset 07:23 PM
Wind NE 7 mph11 km/h
Dew Point 51°F10°C
uv Index 7
Barometric Pressure 29.77 in1008 mb
POP 0% *
Humidity 25%
Mon, 7th
Mason SD Weather - Monday, Sep 7, 2026 - Overcast
Hi: 93°F 34°C
Lo: 69°F 20°C
Sunrise 06:25 AM
Sunset 07:21 PM
Wind W 20 mph33 km/h
Dew Point 46°F8°C
uv Index 5
Barometric Pressure 29.59 in1002 mb
POP 9% *
Humidity 22%
Tue, 8th
Mason SD Weather - Tuesday, Sep 8, 2026 - Sunny
Hi: 82°F 28°C
Lo: 60°F 15°C
Sunrise 06:26 AM
Sunset 07:19 PM
Wind WNW 15 mph23 km/h
Dew Point 36°F2°C
uv Index 6
Barometric Pressure 29.97 in1015 mb
POP 0% *
Humidity 24%
Wed, 9th
Mason SD Weather - Wednesday, Sep 9, 2026 - Sunny
Hi: 84°F 29°C
Lo: 56°F 14°C
Sunrise 06:27 AM
Sunset 07:17 PM
Wind NW 13 mph20 km/h
Dew Point 35°F2°C
uv Index 5
Barometric Pressure 30.06 in1018 mb
POP 0% *
Humidity 22%
Thu, 10th
Mason SD Weather - Thursday, Sep 10, 2026 - Sunny
Hi: 92°F 33°C
Lo: 60°F 15°C
Sunrise 06:28 AM
Sunset 07:16 PM
Wind WNW 20 mph32 km/h
Dew Point 18°F-8°C
uv Index 8
Barometric Pressure 29.71 in1006 mb
POP 0% *
Humidity 7%
Fri, 11th
Mason SD Weather - Friday, Sep 11, 2026 - Cloudy
Hi: 83°F 28°C
Lo: 51°F 11°C
Sunrise 06:30 AM
Sunset 07:14 PM
Wind ESE 13 mph22 km/h
Dew Point 42°F6°C
uv Index 5
Barometric Pressure 29.5 in999 mb
POP 7% *
Humidity 30%
Sat, 12th
Mason SD Weather - Saturday, Sep 12, 2026 - Sunny
Hi: 63°F 17°C
Lo: 48°F 9°C
Sunrise 06:31 AM
Sunset 07:12 PM
Wind NW 13 mph21 km/h
Dew Point 32°F-0°C
uv Index 4
Barometric Pressure 30.03 in1017 mb
POP 1% *
Humidity 35%
Sun, 13th
Mason SD Weather - Sunday, Sep 13, 2026 - Light Rain Shower
Hi: 49°F 10°C
Lo: 45°F 7°C
Sunrise 06:32 AM
Sunset 07:10 PM
Wind N 12 mph20 km/h
Dew Point 44°F7°C
uv Index 2
Barometric Pressure 30.12 in1020 mb
POP 81% *
Humidity 90%
Mon, 14th
Mason SD Weather - Monday, Sep 14, 2026 - Cloudy
Hi: 62°F 17°C
Lo: 47°F 8°C
Sunrise 06:33 AM
Sunset 07:08 PM
Wind NW 9 mph14 km/h
Dew Point 37°F3°C
uv Index 3
Barometric Pressure 30.3 in1026 mb
POP 6% *
Humidity 45%
Tue, 15th
Mason SD Weather - Tuesday, Sep 15, 2026 - Sunny
Hi: 72°F 22°C
Lo: 46°F 8°C
Sunrise 06:34 AM
Sunset 07:06 PM
Wind ESE 7 mph11 km/h
Dew Point 33°F0°C
uv Index 5
Barometric Pressure 30.24 in1024 mb
POP 0% *
Humidity 28%
Wed, 16th
Mason SD Weather - Wednesday, Sep 16, 2026 - Partly Cloudy
Hi: 77°F 25°C
Lo: 50°F 10°C
Sunrise 06:35 AM
Sunset 07:04 PM
Wind E 7 mph11 km/h
Dew Point 36°F2°C
uv Index 6
Barometric Pressure 29.97 in1015 mb
POP 3% *
Humidity 28%
Thu, 17th
Mason SD Weather - Thursday, Sep 17, 2026 - Sunny
Hi: 76°F 25°C
Lo: 53°F 12°C
Sunrise 06:37 AM
Sunset 07:02 PM
Wind ESE 19 mph31 km/h
Dew Point 45°F7°C
uv Index 6
Barometric Pressure 29.85 in1011 mb
POP 1% *
Humidity 39%
Fri, 18th
Mason SD Weather - Friday, Sep 18, 2026 - Overcast
Hi: 75°F 24°C
Lo: 58°F 15°C
Sunrise 06:38 AM
Sunset 07:00 PM
Wind NNW 9 mph15 km/h
Dew Point 34°F1°C
uv Index 5
Barometric Pressure 29.59 in1002 mb
POP 9% *
Humidity 26%
* POP = Probability of Precipitation. Data for 12:00 PM.