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As of 09:14 MDT

Weather in Keystone, SD

45°Current weather

Keystone, Monday, 12 October, 09:14

Overcast. Feels like 43°. High 47°, low 37°.

Pressure29.85 inHg
Wind4.5 mph N
Humidity91%
Visibility—
Dew point42°

10-day forecast for Keystone, SD: 25° to 71°, with precipitation expected on 3 days. The table below breaks each day into morning, afternoon, evening and overnight.

70°
Best day: Saturday, October 17
47° · 0.08 in
Worst day: Monday, October 12

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

Tue, 1346° / 33°0.01Light rain
MorningOvercast35°feels 32°
AfternoonOvercast46°feels 43°
EveningOvercast42°feels 39°
OvernightOvercast33°feels 31°
46 °Light rain

Keystone, Tuesday, 13 October

Light rain. High 46°, low 33°.

Pressure30.03 inHg
Wind3.4 mph SE
Humidity74%
Visibility6.2 mi
Dew point39°
Wed, 1453° / 38°0.06Rain
MorningOvercast43°feels 43°
AfternoonOvercast53°feels 51°
EveningOvercast44°feels 44°
OvernightOvercast42°feels 42°
53 °Rain

Keystone, Wednesday, 14 October

Rain. High 53°, low 38°.

Pressure30.18 inHg
Wind5.3 mph SE
Humidity66%
Visibility6.2 mi
Dew point40°
Thu, 1551° / 38°0Overcast
MorningOvercast44°feels 38°
AfternoonClear51°feels 48°
EveningClear40°feels 33°
OvernightOvercast45°feels 41°
51 °Overcast

Keystone, Thursday, 15 October

Overcast. High 51°, low 38°.

Pressure30.45 inHg
Wind15.5 mph N
Humidity42%
Visibility6.2 mi
Dew point16°
Fri, 1660° / 25°0Clear
MorningClear35°feels 32°
AfternoonClear55°feels 52°
EveningClear48°feels 43°
OvernightClear31°feels 25°
60 °Clear

Keystone, Friday, 16 October

Clear. High 60°, low 25°.

Pressure30.53 inHg
Wind15 mph SW
Humidity31%
Visibility—
Dew point22°
Sat, 1770° / 48°0Clear
MorningClear57°feels 54°
AfternoonClear66°feels 64°
EveningClear55°feels 52°
OvernightClear49°feels 45°
70 °Clear

Keystone, Saturday, 17 October

Clear. High 70°, low 48°.

Pressure29.91 inHg
Wind16 mph SW
Humidity24%
Visibility—
Dew point28°
Sun, 1867° / 49°0Clear
MorningClear54°feels 51°
AfternoonClear65°feels 62°
EveningClear55°feels 52°
OvernightClear51°feels 48°
67 °Clear

Keystone, Sunday, 18 October

Clear. High 67°, low 49°.

Pressure29.80 inHg
Wind9.7 mph NE
Humidity21%
Visibility—
Dew point24°
Mon, 1960° / 45°0Clear
MorningClear49°feels 47°
AfternoonClear58°feels 55°
EveningClear53°feels 50°
OvernightClear49°feels 47°
60 °Clear

Keystone, Monday, 19 October

Clear. High 60°, low 45°.

Pressure30.09 inHg
Wind12.8 mph S
Humidity37%
Visibility—
Dew point31°
Tue, 2067° / 45°0Clear
MorningClear50°feels 47°
AfternoonClear62°feels 60°
EveningClear58°feels 55°
OvernightClear51°feels 49°
67 °Clear

Keystone, Tuesday, 20 October

Clear. High 67°, low 45°.

Pressure29.80 inHg
Wind13.4 mph S
Humidity37%
Visibility—
Dew point34°
Wed, 2171° / 51°0.12Light rain
MorningLight rain57°feels 55°
AfternoonLight rain69°feels 67°
EveningLight rain55°feels 54°
OvernightLight rain52°feels 51°
71 °Light rain

Keystone, Wednesday, 21 October

Light rain. High 71°, low 51°.

Pressure29.65 inHg
Wind9 mph SE
Humidity29%
Visibility—
Dew point35°

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.