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As of 20:32 MDT

Weather in Dewey, SD

59°Current weather

Dewey, Sunday, 11 October, 20:32

Overcast. Feels like 59°. High 61°, low 49°.

Pressure29.74 inHg
Wind10.9 mph E
Humidity81%
Visibility3.9 mi
Dew point53°
Mon, 1256° / 46°0.01Light rain
56 °Light rain

Dewey, Monday, 12 October

Light rain. High 56°, low 46°.

Pressure29.85 inHg
Wind14.5 mph NW
Humidity64%
Visibility6.2 mi
Dew point43°
Tue, 1353° / 40°0.26Rain
53 °Rain

Dewey, Tuesday, 13 October

Rain. High 53°, low 40°.

Pressure30.03 inHg
Wind8 mph SE
Humidity71%
Visibility6.2 mi
Dew point41°
Wed, 1452° / 45°0.03Light rain
52 °Light rain

Dewey, Wednesday, 14 October

Light rain. High 52°, low 45°.

Pressure30.15 inHg
Wind6.2 mph SE
Humidity63%
Visibility6.2 mi
Dew point40°
Thu, 1558° / 41°0.04Light rain
58 °Light rain

Dewey, Thursday, 15 October

Light rain. High 58°, low 41°.

Pressure30.39 inHg
Wind18.3 mph N
Humidity34%
Visibility6.2 mi
Dew point24°
Fri, 1655° / 29°0Clear
55 °Clear

Dewey, Friday, 16 October

Clear. High 55°, low 29°.

Pressure30.68 inHg
Wind9.3 mph SE
Humidity46%
Visibility—
Dew point25°
Sat, 1772° / 36°0Clear
72 °Clear

Dewey, Saturday, 17 October

Clear. High 72°, low 36°.

Pressure29.97 inHg
Wind4.6 mph E
Humidity30%
Visibility—
Dew point27°
Sun, 1874° / 48°0Clear
74 °Clear

Dewey, Sunday, 18 October

Clear. High 74°, low 48°.

Pressure29.91 inHg
Wind9.4 mph E
Humidity19%
Visibility—
Dew point22°
Mon, 1973° / 50°0Clear
73 °Clear

Dewey, Monday, 19 October

Clear. High 73°, low 50°.

Pressure29.88 inHg
Wind11.2 mph E
Humidity20%
Visibility—
Dew point24°
Tue, 2066° / 45°0Overcast
66 °Overcast

Dewey, Tuesday, 20 October

Overcast. High 66°, low 45°.

Pressure29.59 inHg
Wind27.5 mph SW
Humidity29%
Visibility—
Dew point31°
Wed, 2154° / 42°0Overcast
54 °Overcast

Dewey, Wednesday, 21 October

Overcast. High 54°, low 42°.

Pressure29.94 inHg
Wind17.9 mph NW
Humidity40%
Visibility—
Dew point26°
Thu, 2259° / 36°0Mostly clear
59 °Mostly clear

Dewey, Thursday, 22 October

Mostly clear. High 59°, low 36°.

Pressure30.09 inHg
Wind29.9 mph NW
Humidity26%
Visibility—
Dew point18°
Fri, 2371° / 39°0Clear
71 °Clear

Dewey, Friday, 23 October

Clear. High 71°, low 39°.

Pressure30.00 inHg
Wind14.6 mph SE
Humidity29%
Visibility—
Dew point25°
Sat, 2472° / 48°0Overcast
72 °Overcast

Dewey, Saturday, 24 October

Overcast. High 72°, low 48°.

Pressure29.59 inHg
Wind8.7 mph NW
Humidity16%
Visibility—
Dew point16°
Sun, 2555° / 43°0Overcast
55 °Overcast

Dewey, Sunday, 25 October

Overcast. High 55°, low 43°.

Pressure29.97 inHg
Wind17.4 mph NW
Humidity47%
Visibility—
Dew point32°
Mon, 2656° / 36°0Mostly clear
56 °Mostly clear

Dewey, Monday, 26 October

Mostly clear. High 56°, low 36°.

Pressure30.06 inHg
Wind7 mph SE
Humidity43%
Visibility—
Dew point28°

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 Dewey, 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 Dewey, 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.