10-day forecast for Altamont, SD: 56° to 90°, with precipitation expected on 5 days. The table below breaks each day into morning, afternoon, evening and overnight.
89°
Best day: Tuesday, August 18
81° · 0.81 in
Worst day: Tuesday, August 11
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1089° / 58°0.47
Morning61°feels 60°
Afternoon85°feels 85°
Evening81°feels 82°
Overnight62°feels 60°
89 °
Altamont, Monday, 10 August
Heavy rain. High 89°, low 58°.
Pressure29.88 inHg
Wind11.9 mph E
Humidity44%
Visibility6.2 mi
Dew point57°
Tue, 1181° / 63°0.81
Morning65°feels 66°
Afternoon79°feels 79°
Evening75°feels 75°
Overnight64°feels 64°
81 °
Altamont, Tuesday, 11 August
Heavy rain. High 81°, low 63°.
Pressure29.88 inHg
Wind10.2 mph NE
Humidity68%
Visibility6.2 mi
Dew point64°
Wed, 1279° / 61°0
Morning64°feels 63°
Afternoon78°feels 77°
Evening70°feels 69°
Overnight64°feels 63°
79 °
Altamont, Wednesday, 12 August
Clear. High 79°, low 61°.
Pressure29.97 inHg
Wind11.2 mph NE
Humidity44%
Visibility6.2 mi
Dew point52°
Thu, 1371° / 58°0.03
Morning60°feels 59°
Afternoon65°feels 64°
Evening69°feels 68°
Overnight60°feels 59°
71 °
Altamont, Thursday, 13 August
Light rain. High 71°, low 58°.
Pressure30.06 inHg
Wind8.2 mph SE
Humidity61%
Visibility—
Dew point49°
Fri, 1478° / 56°0
Morning63°feels 62°
Afternoon76°feels 76°
Evening71°feels 71°
Overnight62°feels 61°
78 °
Altamont, Friday, 14 August
Overcast. High 78°, low 56°.
Pressure30.12 inHg
Wind11 mph E
Humidity43%
Visibility—
Dew point50°
Sat, 1581° / 59°0
Morning65°feels 65°
Afternoon77°feels 77°
Evening73°feels 73°
Overnight66°feels 66°
81 °
Altamont, Saturday, 15 August
Overcast. High 81°, low 59°.
Pressure30.15 inHg
Wind11.8 mph SE
Humidity40%
Visibility—
Dew point49°
Sun, 1683° / 59°0.13
Morning66°feels 66°
Afternoon79°feels 79°
Evening74°feels 74°
Overnight64°feels 64°
83 °
Altamont, Sunday, 16 August
Light rain. High 83°, low 59°.
Pressure30.09 inHg
Wind12.3 mph SW
Humidity55%
Visibility—
Dew point60°
Mon, 1790° / 58°0.05
Morning65°feels 65°
Afternoon83°feels 84°
Evening86°feels 85°
Overnight72°feels 72°
90 °
Altamont, Monday, 17 August
Light rain. High 90°, low 58°.
Pressure30.00 inHg
Wind8.8 mph S
Humidity56%
Visibility—
Dew point62°
Tue, 1889° / 66°0
Morning71°feels 71°
Afternoon85°feels 83°
Evening82°feels 80°
Overnight71°feels 70°
89 °
Altamont, Tuesday, 18 August
Partly cloudy. High 89°, low 66°.
Pressure29.94 inHg
Wind18.3 mph N
Humidity34%
Visibility—
Dew point51°
About this forecast
How reliable is a 10-day forecast?
The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.
What does the time-of-day table show?
Temperature in Altamont, SD around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.
How is the best day chosen?
We weigh the daytime high against precipitation: a warm, dry day scores highest.