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As of 16:28 MDT

Weather in Mystic, SD

74°Current weather

Mystic, Saturday, 17 October, 16:28

Partly cloudy. Feels like 72°. High 74°, low 37°.

Pressure29.97 inHg
Wind4.9 mph W
Humidity15%
Visibility6.2 mi
Dew point26°
Sun, 1861° / 38°0Clear
61 °Clear

Mystic, Sunday, 18 October

Clear. High 61°, low 38°.

Pressure30.12 inHg
Wind7.4 mph NE
Humidity35%
Visibility6.2 mi
Dew point30°
Mon, 1958° / 35°0Clear
58 °Clear

Mystic, Monday, 19 October

Clear. High 58°, low 35°.

Pressure30.12 inHg
Wind7.5 mph SE
Humidity37%
Visibility6.2 mi
Dew point29°
Tue, 2068° / 43°0Clear
68 °Clear

Mystic, Tuesday, 20 October

Clear. High 68°, low 43°.

Pressure29.97 inHg
Wind7.6 mph W
Humidity34%
Visibility6.2 mi
Dew point38°
Wed, 2161° / 41°0Clear
61 °Clear

Mystic, Wednesday, 21 October

Clear. High 61°, low 41°.

Pressure30.15 inHg
Wind5.7 mph SE
Humidity41%
Visibility6.2 mi
Dew point38°
Thu, 2268° / 46°0Overcast
68 °Overcast

Mystic, Thursday, 22 October

Overcast. High 68°, low 46°.

Pressure29.97 inHg
Wind13.2 mph S
Humidity42%
Visibility—
Dew point40°
Fri, 2363° / 47°0.03Light rain
63 °Light rain

Mystic, Friday, 23 October

Light rain. High 63°, low 47°.

Pressure29.80 inHg
Wind8.5 mph SW
Humidity57%
Visibility—
Dew point43°
Sat, 2446° / 38°1.26Heavy rain
46 °Heavy rain

Mystic, Saturday, 24 October

Heavy rain. High 46°, low 38°.

Pressure30.24 inHg
Wind9.1 mph NE
Humidity98%
Visibility—
Dew point37°
Sun, 2555° / 37°0Clear
55 °Clear

Mystic, Sunday, 25 October

Clear. High 55°, low 37°.

Pressure30.09 inHg
Wind9.8 mph SW
Humidity54%
Visibility—
Dew point35°
Mon, 2659° / 36°0Clear
59 °Clear

Mystic, Monday, 26 October

Clear. High 59°, low 36°.

Pressure30.09 inHg
Wind8 mph SW
Humidity29%
Visibility—
Dew point24°
Tue, 2759° / 44°0Clear
59 °Clear

Mystic, Tuesday, 27 October

Clear. High 59°, low 44°.

Pressure29.88 inHg
Wind17.3 mph S
Humidity44%
Visibility—
Dew point35°
Wed, 2858° / 46°0Mostly clear
58 °Mostly clear

Mystic, Wednesday, 28 October

Mostly clear. High 58°, low 46°.

Pressure29.56 inHg
Wind18.3 mph SW
Humidity52%
Visibility—
Dew point38°
Thu, 2956° / 40°0Overcast
56 °Overcast

Mystic, Thursday, 29 October

Overcast. High 56°, low 40°.

Pressure29.62 inHg
Wind17.2 mph SW
Humidity46%
Visibility—
Dew point32°
Fri, 3043° / 29°0.09Snow
43 °Snow

Mystic, Friday, 30 October

Snow. High 43°, low 29°.

Pressure29.71 inHg
Wind10.5 mph W
Humidity81%
Visibility—
Dew point33°
Sat, 3153° / 31°0Overcast
53 °Overcast

Mystic, Saturday, 31 October

Overcast. High 53°, low 31°.

Pressure29.62 inHg
Wind27.5 mph SW
Humidity45%
Visibility—
Dew point27°
Sun, 0147° / 29°0Partly cloudy
47 °Partly cloudy

Mystic, Sunday, 1 November

Partly cloudy. High 47°, low 29°.

Pressure29.88 inHg
Wind26.8 mph SW
Humidity28%
Visibility—
Dew point15°

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.