As of 04:38 MDT

Weather in Mystic, SD

28°

Mystic, Friday, 16 October, 04:38

Clear. Feels like 20°. High 51°, low 27°.

Pressure30.77 inHg

Wind8.1 mph NW

Humidity73%

Visibility6.2 mi

Dew point21°

See detailed hourly forecast

Sat, 1764° / 35°

64 °

Mystic, Saturday, 17 October

Clear. High 64°, low 35°.

Pressure30.03 inHg

Wind8.1 mph W

Humidity20%

Visibility6.2 mi

Dew point19°

Sun, 1859° / 38°

59 °

Mystic, Sunday, 18 October

Clear. High 59°, low 38°.

Pressure30.09 inHg

Wind7.5 mph NE

Humidity35%

Visibility6.2 mi

Dew point29°

Mon, 1962° / 31°

62 °

Mystic, Monday, 19 October

Clear. High 62°, low 31°.

Pressure30.00 inHg

Wind5.7 mph SE

Humidity32%

Visibility6.2 mi

Dew point29°

Tue, 2065° / 42°

65 °

Mystic, Tuesday, 20 October

Clear. High 65°, low 42°.

Pressure29.85 inHg

Wind8.9 mph SW

Humidity34%

Visibility—

Dew point33°

Wed, 2163° / 44°

63 °

Mystic, Wednesday, 21 October

Clear. High 63°, low 44°.

Pressure30.09 inHg

Wind8.4 mph W

Humidity31%

Visibility—

Dew point30°

Thu, 2266° / 44°

66 °

Mystic, Thursday, 22 October

Partly cloudy. High 66°, low 44°.

Pressure29.94 inHg

Wind15.5 mph SW

Humidity31%

Visibility—

Dew point31°

Fri, 2367° / 48°

0.04

67 °

Mystic, Friday, 23 October

Light rain. High 67°, low 48°.

Pressure29.62 inHg

Wind14 mph SW

Humidity35%

Visibility—

Dew point36°

Sat, 2444° / 27°

0.06

44 °

Mystic, Saturday, 24 October

Snow. High 44°, low 27°.

Pressure30.06 inHg

Wind17.1 mph NW

Humidity69%

Visibility—

Dew point25°

Sun, 2536° / 24°

0.09

36 °

Mystic, Sunday, 25 October

Light snow. High 36°, low 24°.

Pressure30.36 inHg

Wind4 mph SE

Humidity69%

Visibility—

Dew point25°

Mon, 2646° / 21°

46 °

Mystic, Monday, 26 October

Partly cloudy. High 46°, low 21°.

Pressure29.88 inHg

Wind8.5 mph NW

Humidity35%

Visibility—

Dew point16°

Tue, 2747° / 29°

47 °

Mystic, Tuesday, 27 October

Overcast. High 47°, low 29°.

Pressure29.80 inHg

Wind7.7 mph W

Humidity47%

Visibility—

Dew point24°

Wed, 2853° / 31°

0.01

53 °

Mystic, Wednesday, 28 October

Light rain. High 53°, low 31°.

Pressure29.53 inHg

Wind11.1 mph SW

Humidity63%

Visibility—

Dew point35°

Thu, 2940° / 26°

40 °

Mystic, Thursday, 29 October

Overcast. High 40°, low 26°.

Pressure29.83 inHg

Wind14.9 mph W

Humidity65%

Visibility—

Dew point24°

Fri, 3043° / 25°

43 °

Mystic, Friday, 30 October

Partly cloudy. High 43°, low 25°.

Pressure29.83 inHg

Wind16.4 mph NW

Humidity54%

Visibility—

Dew point23°

Sat, 3156° / 38°

56 °

Mystic, Saturday, 31 October

Overcast. High 56°, low 38°.

Pressure29.74 inHg

Wind14.3 mph W

Humidity30%

Visibility—

Dew point20°

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.