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As of 07:31 MDT

Weather in Dewey, SD

49°Current weather

Dewey, Sunday, 11 October, 07:31

Overcast. Feels like 49°. High 65°, low 49°.

Pressure29.80 inHg
Wind3.3 mph SW
Humidity72%
Visibility6.2 mi
Dew point41°
Mon, 1257° / 44°0Partly cloudy
57 °Partly cloudy

Dewey, Monday, 12 October

Partly cloudy. High 57°, low 44°.

Pressure29.85 inHg
Wind17.5 mph NW
Humidity67%
Visibility6.2 mi
Dew point43°
Tue, 1352° / 42°0.32Rain
52 °Rain

Dewey, Tuesday, 13 October

Rain. High 52°, low 42°.

Pressure30.00 inHg
Wind9.1 mph SE
Humidity69%
Visibility6.2 mi
Dew point41°
Wed, 1451° / 44°0.3Rain
51 °Rain

Dewey, Wednesday, 14 October

Rain. High 51°, low 44°.

Pressure30.18 inHg
Wind5.7 mph SE
Humidity69%
Visibility6.2 mi
Dew point42°
Thu, 1560° / 43°0.09Light rain
60 °Light rain

Dewey, Thursday, 15 October

Light rain. High 60°, low 43°.

Pressure30.39 inHg
Wind16.5 mph N
Humidity65%
Visibility—
Dew point38°
Fri, 1656° / 30°0Clear
56 °Clear

Dewey, Friday, 16 October

Clear. High 56°, low 30°.

Pressure30.65 inHg
Wind6.1 mph E
Humidity46%
Visibility—
Dew point27°
Sat, 1768° / 39°0Clear
68 °Clear

Dewey, Saturday, 17 October

Clear. High 68°, low 39°.

Pressure30.09 inHg
Wind6 mph E
Humidity33%
Visibility—
Dew point26°
Sun, 1871° / 49°0Overcast
71 °Overcast

Dewey, Sunday, 18 October

Overcast. High 71°, low 49°.

Pressure30.00 inHg
Wind8.4 mph E
Humidity22%
Visibility—
Dew point26°
Mon, 1976° / 49°0Partly cloudy
76 °Partly cloudy

Dewey, Monday, 19 October

Partly cloudy. High 76°, low 49°.

Pressure29.94 inHg
Wind8.9 mph E
Humidity27%
Visibility—
Dew point29°
Tue, 2068° / 50°0Clear
68 °Clear

Dewey, Tuesday, 20 October

Clear. High 68°, low 50°.

Pressure29.74 inHg
Wind23.5 mph NW
Humidity21%
Visibility—
Dew point24°
Wed, 2165° / 45°0Clear
65 °Clear

Dewey, Wednesday, 21 October

Clear. High 65°, low 45°.

Pressure29.94 inHg
Wind9.5 mph S
Humidity32%
Visibility—
Dew point30°
Thu, 2267° / 50°0Overcast
67 °Overcast

Dewey, Thursday, 22 October

Overcast. High 67°, low 50°.

Pressure30.03 inHg
Wind6.5 mph NW
Humidity27%
Visibility—
Dew point26°
Fri, 2371° / 46°0Clear
71 °Clear

Dewey, Friday, 23 October

Clear. High 71°, low 46°.

Pressure30.09 inHg
Wind14.1 mph SE
Humidity33%
Visibility—
Dew point31°
Sat, 2471° / 48°0Clear
71 °Clear

Dewey, Saturday, 24 October

Clear. High 71°, low 48°.

Pressure30.00 inHg
Wind11.1 mph SE
Humidity20%
Visibility—
Dew point22°
Sun, 2558° / 45°0Partly cloudy
58 °Partly cloudy

Dewey, Sunday, 25 October

Partly cloudy. High 58°, low 45°.

Pressure30.30 inHg
Wind15.7 mph NW
Humidity25%
Visibility—
Dew point20°
Mon, 2662° / 38°0Overcast
62 °Overcast

Dewey, Monday, 26 October

Overcast. High 62°, low 38°.

Pressure30.03 inHg
Wind6.3 mph NW
Humidity27%
Visibility—
Dew point19°

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.