As of 02:10 MDT

Weather in Lacy, SD

58°

Lacy, Sunday, 11 October, 02:10

Overcast. Feels like 57°. High 63°, low 51°.

Pressure29.65 inHg

Wind12.6 mph N

Humidity73%

Visibility6.2 mi

Dew point50°

See detailed hourly forecast

Mon, 1260° / 49°

0.1

60 °

Lacy, Monday, 12 October

Rain. High 60°, low 49°.

Pressure29.83 inHg

Wind10.4 mph N

Humidity77%

Visibility6.2 mi

Dew point50°

Tue, 1350° / 44°

0.07

50 °

Lacy, Tuesday, 13 October

Light rain. High 50°, low 44°.

Pressure30.09 inHg

Wind5.9 mph N

Humidity69%

Visibility6.2 mi

Dew point37°

Wed, 1457° / 42°

57 °

Lacy, Wednesday, 14 October

Clear. High 57°, low 42°.

Pressure30.33 inHg

Wind2.1 mph N

Humidity54%

Visibility6.2 mi

Dew point39°

Thu, 1564° / 47°

0.22

64 °

Lacy, Thursday, 15 October

Rain. High 64°, low 47°.

Pressure30.36 inHg

Wind12.5 mph N

Humidity53%

Visibility—

Dew point41°

Fri, 1649° / 36°

49 °

Lacy, Friday, 16 October

Overcast. High 49°, low 36°.

Pressure30.74 inHg

Wind15.3 mph NE

Humidity51%

Visibility—

Dew point29°

Sat, 1748° / 28°

48 °

Lacy, Saturday, 17 October

Clear. High 48°, low 28°.

Pressure30.56 inHg

Wind20.8 mph SE

Humidity24%

Visibility—

Dew point7°

Sun, 1869° / 42°

69 °

Lacy, Sunday, 18 October

Overcast. High 69°, low 42°.

Pressure30.03 inHg

Wind16.8 mph S

Humidity32%

Visibility—

Dew point31°

Mon, 1973° / 51°

73 °

Lacy, Monday, 19 October

Clear. High 73°, low 51°.

Pressure30.09 inHg

Wind11.1 mph SE

Humidity35%

Visibility—

Dew point38°

Tue, 2077° / 55°

77 °

Lacy, Tuesday, 20 October

Partly cloudy. High 77°, low 55°.

Pressure29.83 inHg

Wind10.3 mph SW

Humidity28%

Visibility—

Dew point35°

Wed, 2164° / 54°

64 °

Lacy, Wednesday, 21 October

Mostly clear. High 64°, low 54°.

Pressure30.09 inHg

Wind21.2 mph NW

Humidity41%

Visibility—

Dew point37°

Thu, 2261° / 47°

61 °

Lacy, Thursday, 22 October

Overcast. High 61°, low 47°.

Pressure30.24 inHg

Wind7.4 mph SE

Humidity51%

Visibility—

Dew point37°

Fri, 2362° / 46°

62 °

Lacy, Friday, 23 October

Partly cloudy. High 62°, low 46°.

Pressure30.24 inHg

Wind7.6 mph NE

Humidity50%

Visibility—

Dew point39°

Sat, 2461° / 43°

61 °

Lacy, Saturday, 24 October

Mostly clear. High 61°, low 43°.

Pressure30.18 inHg

Wind12.6 mph SE

Humidity58%

Visibility—

Dew point40°

Sun, 2559° / 45°

59 °

Lacy, Sunday, 25 October

Overcast. High 59°, low 45°.

Pressure30.03 inHg

Wind14.7 mph S

Humidity70%

Visibility—

Dew point47°

Mon, 2671° / 51°

71 °

Lacy, Monday, 26 October

Partly cloudy. High 71°, low 51°.

Pressure29.74 inHg

Wind11.7 mph W

Humidity23%

Visibility—

Dew point29°

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 Lacy, 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 Lacy, 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.