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As of 17:43 MDT

Weather in Dewey, SD

48°Current weather

Dewey, Wednesday, 14 October, 17:43

Overcast. Feels like 46°. High 50°, low 43°.

Pressure30.09 inHg
Wind5.8 mph S
Humidity87%
Visibility6.2 mi
Dew point45°
Thu, 1548° / 32°0.05Light rain
48 °Light rain

Dewey, Thursday, 15 October

Light rain. High 48°, low 32°.

Pressure30.42 inHg
Wind22.5 mph NW
Humidity44%
Visibility6.2 mi
Dew point26°
Fri, 1651° / 26°0Clear
51 °Clear

Dewey, Friday, 16 October

Clear. High 51°, low 26°.

Pressure30.74 inHg
Wind2.5 mph W
Humidity54%
Visibility6.2 mi
Dew point21°
Sat, 1769° / 39°0Mostly clear
69 °Mostly clear

Dewey, Saturday, 17 October

Mostly clear. High 69°, low 39°.

Pressure30.15 inHg
Wind2.7 mph N
Humidity31%
Visibility6.2 mi
Dew point27°
Sun, 1867° / 39°0Clear
67 °Clear

Dewey, Sunday, 18 October

Clear. High 67°, low 39°.

Pressure30.18 inHg
Wind6.2 mph SW
Humidity37%
Visibility6.2 mi
Dew point35°
Mon, 1965° / 39°0Clear
65 °Clear

Dewey, Monday, 19 October

Clear. High 65°, low 39°.

Pressure30.12 inHg
Wind7.7 mph E
Humidity48%
Visibility—
Dew point37°
Tue, 2076° / 46°0Clear
76 °Clear

Dewey, Tuesday, 20 October

Clear. High 76°, low 46°.

Pressure29.85 inHg
Wind11.5 mph S
Humidity33%
Visibility—
Dew point35°
Wed, 2166° / 47°0Clear
66 °Clear

Dewey, Wednesday, 21 October

Clear. High 66°, low 47°.

Pressure29.94 inHg
Wind11.4 mph NW
Humidity33%
Visibility—
Dew point31°
Thu, 2276° / 47°0Clear
76 °Clear

Dewey, Thursday, 22 October

Clear. High 76°, low 47°.

Pressure29.88 inHg
Wind12.3 mph SW
Humidity35%
Visibility—
Dew point37°
Fri, 2358° / 38°0.27Rain
58 °Rain

Dewey, Friday, 23 October

Rain. High 58°, low 38°.

Pressure29.80 inHg
Wind30.4 mph N
Humidity56%
Visibility—
Dew point35°
Sat, 2449° / 33°0Clear
49 °Clear

Dewey, Saturday, 24 October

Clear. High 49°, low 33°.

Pressure30.33 inHg
Wind20.4 mph NW
Humidity37%
Visibility—
Dew point19°
Sun, 2554° / 32°0Clear
54 °Clear

Dewey, Sunday, 25 October

Clear. High 54°, low 32°.

Pressure30.45 inHg
Wind7.3 mph NW
Humidity44%
Visibility—
Dew point24°
Mon, 2663° / 40°0Clear
63 °Clear

Dewey, Monday, 26 October

Clear. High 63°, low 40°.

Pressure30.09 inHg
Wind5 mph SE
Humidity28%
Visibility—
Dew point23°
Tue, 2768° / 45°0Clear
68 °Clear

Dewey, Tuesday, 27 October

Clear. High 68°, low 45°.

Pressure29.85 inHg
Wind5.6 mph W
Humidity25%
Visibility—
Dew point25°
Wed, 2868° / 48°0Overcast
68 °Overcast

Dewey, Wednesday, 28 October

Overcast. High 68°, low 48°.

Pressure29.83 inHg
Wind15.9 mph NW
Humidity28%
Visibility—
Dew point26°
Thu, 2969° / 47°0Partly cloudy
69 °Partly cloudy

Dewey, Thursday, 29 October

Partly cloudy. High 69°, low 47°.

Pressure29.91 inHg
Wind6 mph E
Humidity32%
Visibility—
Dew point30°

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.