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As of 10:32 MDT

Weather in Mystic, SD

61°Current weather

Mystic, Wednesday, 21 October, 10:32

Overcast. Feels like 60°. High 62°, low 37°.

Pressure30.21 inHg
Wind5.4 mph SE
Humidity52%
Visibility6.2 mi
Dew point42°
Thu, 2269° / 45°0Mostly clear
69 °Mostly clear

Mystic, Thursday, 22 October

Mostly clear. High 69°, low 45°.

Pressure29.94 inHg
Wind9.1 mph SW
Humidity40%
Visibility6.2 mi
Dew point42°
Fri, 2368° / 51°0Partly cloudy
68 °Partly cloudy

Mystic, Friday, 23 October

Partly cloudy. High 68°, low 51°.

Pressure29.71 inHg
Wind13 mph W
Humidity35%
Visibility6.2 mi
Dew point40°
Sat, 2451° / 34°0Overcast
51 °Overcast

Mystic, Saturday, 24 October

Overcast. High 51°, low 34°.

Pressure30.30 inHg
Wind6.3 mph NW
Humidity67%
Visibility6.2 mi
Dew point30°
Sun, 2534° / 30°0.2Snow
34 °Snow

Mystic, Sunday, 25 October

Snow. High 34°, low 30°.

Pressure30.36 inHg
Wind5.1 mph SE
Humidity99%
Visibility—
Dew point31°
Mon, 2640° / 28°0Overcast
40 °Overcast

Mystic, Monday, 26 October

Overcast. High 40°, low 28°.

Pressure30.45 inHg
Wind5.9 mph NW
Humidity83%
Visibility—
Dew point30°
Tue, 2755° / 27°0Overcast
55 °Overcast

Mystic, Tuesday, 27 October

Overcast. High 55°, low 27°.

Pressure29.94 inHg
Wind7.6 mph W
Humidity65%
Visibility—
Dew point39°
Wed, 2844° / 29°0Overcast
44 °Overcast

Mystic, Wednesday, 28 October

Overcast. High 44°, low 29°.

Pressure30.15 inHg
Wind8.1 mph W
Humidity63%
Visibility—
Dew point29°
Thu, 2948° / 28°0Overcast
48 °Overcast

Mystic, Thursday, 29 October

Overcast. High 48°, low 28°.

Pressure30.09 inHg
Wind6.8 mph S
Humidity63%
Visibility—
Dew point33°
Fri, 3059° / 37°0Overcast
59 °Overcast

Mystic, Friday, 30 October

Overcast. High 59°, low 37°.

Pressure29.62 inHg
Wind12.1 mph SW
Humidity35%
Visibility—
Dew point29°
Sat, 3151° / 31°0.1Snow
51 °Snow

Mystic, Saturday, 31 October

Snow. High 51°, low 31°.

Pressure29.47 inHg
Wind19.5 mph W
Humidity48%
Visibility—
Dew point29°
Sun, 0142° / 28°0Light snow
42 °Light snow

Mystic, Sunday, 1 November

Light snow. High 42°, low 28°.

Pressure30.09 inHg
Wind15.9 mph NW
Humidity51%
Visibility—
Dew point22°
Mon, 0258° / 30°0Overcast
58 °Overcast

Mystic, Monday, 2 November

Overcast. High 58°, low 30°.

Pressure30.03 inHg
Wind8.4 mph SW
Humidity16%
Visibility—
Dew point9°
Tue, 0351° / 33°0Overcast
51 °Overcast

Mystic, Tuesday, 3 November

Overcast. High 51°, low 33°.

Pressure30.12 inHg
Wind5 mph SW
Humidity27%
Visibility—
Dew point14°
Wed, 0453° / 32°0Partly cloudy
53 °Partly cloudy

Mystic, Wednesday, 4 November

Partly cloudy. High 53°, low 32°.

Pressure29.80 inHg
Wind5.8 mph SW
Humidity22%
Visibility—
Dew point13°
Thu, 0554° / 33°0Mostly clear
54 °Mostly clear

Mystic, Thursday, 5 November

Mostly clear. High 54°, low 33°.

Pressure29.44 inHg
Wind11.7 mph W
Humidity27%
Visibility—
Dew point18°

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Mystic, SD are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Mystic, SD since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.