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As of 08:35 MDT

Weather in Dewey, MT

25°Current weather

Dewey, Tuesday, 13 October, 08:35

Overcast. Feels like 20°. High 41°, low 24°.

Pressure30.18 inHg
Wind3.7 mph W
Humidity93%
Visibility<0.1 mi
Dew point23°
Wed, 1447° / 24°0Mostly clear
47 °Mostly clear

Dewey, Wednesday, 14 October

Mostly clear. High 47°, low 24°.

Pressure30.18 inHg
Wind3.4 mph W
Humidity63%
Visibility6.2 mi
Dew point27°
Thu, 1552° / 23°0Clear
52 °Clear

Dewey, Thursday, 15 October

Clear. High 52°, low 23°.

Pressure30.59 inHg
Wind1.9 mph SE
Humidity62%
Visibility6.2 mi
Dew point28°
Fri, 1658° / 26°0Mostly clear
58 °Mostly clear

Dewey, Friday, 16 October

Mostly clear. High 58°, low 26°.

Pressure30.47 inHg
Wind1.1 mph W
Humidity46%
Visibility6.2 mi
Dew point20°
Sat, 1759° / 32°0Overcast
59 °Overcast

Dewey, Saturday, 17 October

Overcast. High 59°, low 32°.

Pressure30.12 inHg
Wind4.9 mph SW
Humidity46%
Visibility—
Dew point31°
Sun, 1859° / 34°0Clear
59 °Clear

Dewey, Sunday, 18 October

Clear. High 59°, low 34°.

Pressure30.00 inHg
Wind2.8 mph W
Humidity51%
Visibility—
Dew point34°
Mon, 1955° / 39°0Overcast
55 °Overcast

Dewey, Monday, 19 October

Overcast. High 55°, low 39°.

Pressure29.68 inHg
Wind16.2 mph SW
Humidity36%
Visibility—
Dew point27°
Tue, 2042° / 30°0.3Snow
42 °Snow

Dewey, Tuesday, 20 October

Snow. High 42°, low 30°.

Pressure29.88 inHg
Wind4.5 mph NE
Humidity77%
Visibility—
Dew point31°
Wed, 2143° / 23°0Partly cloudy
43 °Partly cloudy

Dewey, Wednesday, 21 October

Partly cloudy. High 43°, low 23°.

Pressure30.06 inHg
Wind5.2 mph NW
Humidity65%
Visibility—
Dew point26°
Thu, 2242° / 25°0.03Light snow
42 °Light snow

Dewey, Thursday, 22 October

Light snow. High 42°, low 25°.

Pressure30.00 inHg
Wind6.4 mph W
Humidity68%
Visibility—
Dew point26°
Fri, 2339° / 26°0.12Light snow
39 °Light snow

Dewey, Friday, 23 October

Light snow. High 39°, low 26°.

Pressure30.36 inHg
Wind5.4 mph NW
Humidity70%
Visibility—
Dew point26°
Sat, 2446° / 24°0Overcast
46 °Overcast

Dewey, Saturday, 24 October

Overcast. High 46°, low 24°.

Pressure30.39 inHg
Wind6.7 mph SW
Humidity51%
Visibility—
Dew point22°
Sun, 2554° / 30°0Clear
54 °Clear

Dewey, Sunday, 25 October

Clear. High 54°, low 30°.

Pressure30.36 inHg
Wind6.1 mph SW
Humidity49%
Visibility—
Dew point29°
Mon, 2656° / 34°0Mostly clear
56 °Mostly clear

Dewey, Monday, 26 October

Mostly clear. High 56°, low 34°.

Pressure29.97 inHg
Wind6.3 mph SW
Humidity47%
Visibility—
Dew point31°
Tue, 2748° / 32°0Overcast
48 °Overcast

Dewey, Tuesday, 27 October

Overcast. High 48°, low 32°.

Pressure29.77 inHg
Wind20 mph W
Humidity44%
Visibility—
Dew point25°
Wed, 2847° / 29°0Partly cloudy
47 °Partly cloudy

Dewey, Wednesday, 28 October

Partly cloudy. High 47°, low 29°.

Pressure30.06 inHg
Wind9.3 mph W
Humidity44%
Visibility—
Dew point21°

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, MT 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, MT 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.