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As of 14:25 MDT

Weather in Dewey, SD

82°Current weather

Dewey, Friday, 9 October, 14:25

Mostly clear. Feels like 80°. High 83°, low 50°.

Pressure29.62 inHg
Wind5.2 mph S
Humidity25%
Visibility6.2 mi
Dew point42°
Sat, 1080° / 57°0Clear
80 °Clear

Dewey, Saturday, 10 October

Clear. High 80°, low 57°.

Pressure29.56 inHg
Wind2.5 mph S
Humidity25%
Visibility6.2 mi
Dew point39°
Sun, 1169° / 52°0Overcast
69 °Overcast

Dewey, Sunday, 11 October

Overcast. High 69°, low 52°.

Pressure29.77 inHg
Wind3.6 mph SW
Humidity49%
Visibility6.2 mi
Dew point45°
Mon, 1268° / 47°0.23Rain
68 °Rain

Dewey, Monday, 12 October

Rain. High 68°, low 47°.

Pressure29.77 inHg
Wind4.7 mph SE
Humidity60%
Visibility6.2 mi
Dew point48°
Tue, 1349° / 46°0.11Light rain
49 °Light rain

Dewey, Tuesday, 13 October

Light rain. High 49°, low 46°.

Pressure30.03 inHg
Wind9.7 mph SE
Humidity80%
Visibility4.4 mi
Dew point42°
Wed, 1454° / 40°0.32Rain
54 °Rain

Dewey, Wednesday, 14 October

Rain. High 54°, low 40°.

Pressure30.15 inHg
Wind11.8 mph SE
Humidity64%
Visibility—
Dew point37°
Thu, 1549° / 44°0.12Light rain
49 °Light rain

Dewey, Thursday, 15 October

Light rain. High 49°, low 44°.

Pressure30.18 inHg
Wind26.1 mph NW
Humidity64%
Visibility—
Dew point37°
Fri, 1646° / 35°0Clear
46 °Clear

Dewey, Friday, 16 October

Clear. High 46°, low 35°.

Pressure30.56 inHg
Wind30.9 mph NW
Humidity26%
Visibility—
Dew point10°
Sat, 1762° / 31°0Clear
62 °Clear

Dewey, Saturday, 17 October

Clear. High 62°, low 31°.

Pressure30.18 inHg
Wind6.3 mph E
Humidity20%
Visibility—
Dew point9°
Sun, 1862° / 41°0Partly cloudy
62 °Partly cloudy

Dewey, Sunday, 18 October

Partly cloudy. High 62°, low 41°.

Pressure30.12 inHg
Wind11.2 mph SE
Humidity28%
Visibility—
Dew point22°
Mon, 1971° / 41°0Clear
71 °Clear

Dewey, Monday, 19 October

Clear. High 71°, low 41°.

Pressure29.88 inHg
Wind7.2 mph E
Humidity24%
Visibility—
Dew point22°
Tue, 2067° / 50°0Overcast
67 °Overcast

Dewey, Tuesday, 20 October

Overcast. High 67°, low 50°.

Pressure29.88 inHg
Wind23.5 mph NW
Humidity18%
Visibility—
Dew point20°
Wed, 2167° / 42°0Clear
67 °Clear

Dewey, Wednesday, 21 October

Clear. High 67°, low 42°.

Pressure30.09 inHg
Wind7.9 mph S
Humidity35%
Visibility—
Dew point30°
Thu, 2252° / 38°0Mostly clear
52 °Mostly clear

Dewey, Thursday, 22 October

Mostly clear. High 52°, low 38°.

Pressure30.27 inHg
Wind29.8 mph NW
Humidity31%
Visibility—
Dew point20°
Fri, 2353° / 30°0Clear
53 °Clear

Dewey, Friday, 23 October

Clear. High 53°, low 30°.

Pressure30.33 inHg
Wind7.7 mph E
Humidity29%
Visibility—
Dew point15°
Sat, 2472° / 36°0Clear
72 °Clear

Dewey, Saturday, 24 October

Clear. High 72°, low 36°.

Pressure30.00 inHg
Wind9 mph NW
Humidity18%
Visibility—
Dew point16°

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.