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As of 00:40 MDT

Weather in Keystone, SD

55°Current weather

Keystone, Sunday, 11 October, 00:40

Overcast. Feels like 53°. High 60°, low 44°.

Pressure29.71 inHg
Wind4.3 mph NE
Humidity48%
Visibility6.2 mi
Dew point36°

10-day forecast for Keystone, SD: 27° to 73°, with precipitation expected on 2 days. The table below breaks each day into morning, afternoon, evening and overnight.

73°
Best day: Tuesday, October 20
50° · 0.37 in
Worst day: Tuesday, October 13

Tap any day below to see morning, afternoon, evening and overnight.

Mon, 1263° / 38°0.02Light rain
MorningOvercast51°feels 51°
AfternoonPartly cloudy63°feels 61°
EveningOvercast41°feels 41°
OvernightOvercast53°feels 52°
63 °Light rain

Keystone, Monday, 12 October

Light rain. High 63°, low 38°.

Pressure29.77 inHg
Wind3.9 mph N
Humidity58%
Visibility6.2 mi
Dew point45°
Tue, 1350° / 36°0.37Rain
MorningOvercast37°feels 35°
AfternoonOvercast50°feels 47°
EveningMostly clear40°feels 40°
OvernightRain37°feels 37°
50 °Rain

Keystone, Tuesday, 13 October

Rain. High 50°, low 36°.

Pressure30.00 inHg
Wind5.6 mph SE
Humidity72%
Visibility6.2 mi
Dew point39°
Wed, 1452° / 37°0Clear
MorningClear42°feels 42°
AfternoonMostly clear52°feels 49°
EveningPartly cloudy44°feels 42°
OvernightPartly cloudy37°feels 33°
52 °Clear

Keystone, Wednesday, 14 October

Clear. High 52°, low 37°.

Pressure30.27 inHg
Wind4.8 mph E
Humidity56%
Visibility6.2 mi
Dew point36°
Thu, 1558° / 37°0.18Rain
MorningRain43°feels 40°
AfternoonRain55°feels 53°
EveningRain51°feels 48°
OvernightRain43°feels 39°
58 °Rain

Keystone, Thursday, 15 October

Rain. High 58°, low 37°.

Pressure30.36 inHg
Wind10.9 mph NE
Humidity56%
Visibility—
Dew point38°
Fri, 1649° / 29°0Overcast
MorningOvercast36°feels 35°
AfternoonOvercast47°feels 42°
EveningOvercast35°feels 29°
OvernightOvercast29°feels 24°
49 °Overcast

Keystone, Friday, 16 October

Overcast. High 49°, low 29°.

Pressure30.59 inHg
Wind12.7 mph E
Humidity38%
Visibility—
Dew point22°
Sat, 1756° / 27°0Clear
MorningClear34°feels 28°
AfternoonClear50°feels 46°
EveningClear45°feels 42°
OvernightClear42°feels 37°
56 °Clear

Keystone, Saturday, 17 October

Clear. High 56°, low 27°.

Pressure30.27 inHg
Wind13.8 mph S
Humidity33%
Visibility—
Dew point19°
Sun, 1870° / 46°0Clear
MorningClear53°feels 49°
AfternoonClear67°feels 65°
EveningClear54°feels 51°
OvernightClear51°feels 47°
70 °Clear

Keystone, Sunday, 18 October

Clear. High 70°, low 46°.

Pressure30.03 inHg
Wind9.4 mph W
Humidity19%
Visibility—
Dew point23°
Mon, 1973° / 50°0Clear
MorningClear56°feels 53°
AfternoonClear69°feels 67°
EveningClear58°feels 55°
OvernightClear53°feels 50°
73 °Clear

Keystone, Monday, 19 October

Clear. High 73°, low 50°.

Pressure30.03 inHg
Wind8.2 mph SW
Humidity20%
Visibility—
Dew point25°
Tue, 2073° / 51°0Partly cloudy
MorningPartly cloudy57°feels 54°
AfternoonPartly cloudy70°feels 68°
EveningPartly cloudy58°feels 55°
OvernightPartly cloudy54°feels 51°
73 °Partly cloudy

Keystone, Tuesday, 20 October

Partly cloudy. High 73°, low 51°.

Pressure29.83 inHg
Wind9.5 mph W
Humidity15%
Visibility—
Dew point20°

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 Keystone, 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.