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As of 20:03 MDT

Weather in Dewey, MT

28°Current weather

Dewey, Monday, 12 October, 20:03

Clear. Feels like 28°. High 32°, low 25°.

Pressure30.00 inHg
Wind0.9 mph SW
Humidity89%
Visibility6.2 mi
Dew point25°
Tue, 1340° / 22°0Clear
40 °Clear

Dewey, Tuesday, 13 October

Clear. High 40°, low 22°.

Pressure30.09 inHg
Wind1.5 mph NW
Humidity75%
Visibility0.4 mi
Dew point26°
Wed, 1451° / 24°0Overcast
51 °Overcast

Dewey, Wednesday, 14 October

Overcast. High 51°, low 24°.

Pressure30.18 inHg
Wind3.2 mph W
Humidity62%
Visibility6.2 mi
Dew point26°
Thu, 1551° / 24°0Clear
51 °Clear

Dewey, Thursday, 15 October

Clear. High 51°, low 24°.

Pressure30.56 inHg
Wind1.9 mph SE
Humidity60%
Visibility6.2 mi
Dew point29°
Fri, 1657° / 27°0Clear
57 °Clear

Dewey, Friday, 16 October

Clear. High 57°, low 27°.

Pressure30.45 inHg
Wind1 mph W
Humidity47%
Visibility6.2 mi
Dew point23°
Sat, 1760° / 31°0Partly cloudy
60 °Partly cloudy

Dewey, Saturday, 17 October

Partly cloudy. High 60°, low 31°.

Pressure30.06 inHg
Wind3.1 mph W
Humidity47%
Visibility—
Dew point31°
Sun, 1859° / 36°0Partly cloudy
59 °Partly cloudy

Dewey, Sunday, 18 October

Partly cloudy. High 59°, low 36°.

Pressure29.97 inHg
Wind8.1 mph NW
Humidity44%
Visibility—
Dew point31°
Mon, 1963° / 42°0Overcast
63 °Overcast

Dewey, Monday, 19 October

Overcast. High 63°, low 42°.

Pressure29.65 inHg
Wind11.9 mph S
Humidity34%
Visibility—
Dew point28°
Tue, 2043° / 33°0.23Snow
43 °Snow

Dewey, Tuesday, 20 October

Snow. High 43°, low 33°.

Pressure29.77 inHg
Wind6.6 mph NW
Humidity58%
Visibility—
Dew point26°
Wed, 2140° / 27°0Overcast
40 °Overcast

Dewey, Wednesday, 21 October

Overcast. High 40°, low 27°.

Pressure29.88 inHg
Wind8.2 mph N
Humidity59%
Visibility—
Dew point22°
Thu, 2240° / 23°0Mostly clear
40 °Mostly clear

Dewey, Thursday, 22 October

Mostly clear. High 40°, low 23°.

Pressure29.94 inHg
Wind7.7 mph W
Humidity54%
Visibility—
Dew point21°
Fri, 2340° / 26°0.03Light snow
40 °Light snow

Dewey, Friday, 23 October

Light snow. High 40°, low 26°.

Pressure30.27 inHg
Wind11.6 mph NW
Humidity57%
Visibility—
Dew point22°
Sat, 2447° / 23°0Overcast
47 °Overcast

Dewey, Saturday, 24 October

Overcast. High 47°, low 23°.

Pressure30.47 inHg
Wind6.3 mph SW
Humidity37%
Visibility—
Dew point15°
Sun, 2553° / 31°0Overcast
53 °Overcast

Dewey, Sunday, 25 October

Overcast. High 53°, low 31°.

Pressure30.42 inHg
Wind6.7 mph W
Humidity48%
Visibility—
Dew point28°
Mon, 2664° / 37°0Mostly clear
64 °Mostly clear

Dewey, Monday, 26 October

Mostly clear. High 64°, low 37°.

Pressure30.42 inHg
Wind3.7 mph W
Humidity37%
Visibility—
Dew point30°
Tue, 2767° / 42°0Clear
67 °Clear

Dewey, Tuesday, 27 October

Clear. High 67°, low 42°.

Pressure30.27 inHg
Wind4.4 mph W
Humidity32%
Visibility—
Dew point29°

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.