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As of 01:50 MDT

Weather in Dewey, MT

41°Current weather

Dewey, Saturday, 10 October, 01:50

Overcast. Feels like 41°. High 46°, low 28°.

Pressure29.56 inHg
Wind1.4 mph NW
Humidity51%
Visibility6.2 mi
Dew point25°
Sun, 1132° / 24°0.69Snow
32 °Snow

Dewey, Sunday, 11 October

Snow. High 32°, low 24°.

Pressure29.97 inHg
Wind4.2 mph E
Humidity97%
Visibility3.3 mi
Dew point25°
Mon, 1241° / 23°0.16Snow
41 °Snow

Dewey, Monday, 12 October

Snow. High 41°, low 23°.

Pressure30.09 inHg
Wind2.8 mph SE
Humidity93%
Visibility6.2 mi
Dew point24°
Tue, 1348° / 23°0Clear
48 °Clear

Dewey, Tuesday, 13 October

Clear. High 48°, low 23°.

Pressure30.00 inHg
Wind0.9 mph N
Humidity66%
Visibility6.2 mi
Dew point26°
Wed, 1453° / 27°0Clear
53 °Clear

Dewey, Wednesday, 14 October

Clear. High 53°, low 27°.

Pressure30.15 inHg
Wind2 mph NE
Humidity58%
Visibility—
Dew point32°
Thu, 1550° / 31°0.09Snow
50 °Snow

Dewey, Thursday, 15 October

Snow. High 50°, low 31°.

Pressure30.33 inHg
Wind5 mph NE
Humidity62%
Visibility—
Dew point35°
Fri, 1648° / 33°0.01Light snow
48 °Light snow

Dewey, Friday, 16 October

Light snow. High 48°, low 33°.

Pressure30.53 inHg
Wind6.4 mph S
Humidity63%
Visibility—
Dew point28°
Sat, 1762° / 35°0Overcast
62 °Overcast

Dewey, Saturday, 17 October

Overcast. High 62°, low 35°.

Pressure30.06 inHg
Wind6.4 mph SW
Humidity31%
Visibility—
Dew point23°
Sun, 1861° / 38°0Overcast
61 °Overcast

Dewey, Sunday, 18 October

Overcast. High 61°, low 38°.

Pressure29.94 inHg
Wind5.4 mph SW
Humidity30%
Visibility—
Dew point23°
Mon, 1949° / 36°0.03Snow
49 °Snow

Dewey, Monday, 19 October

Snow. High 49°, low 36°.

Pressure29.85 inHg
Wind14.2 mph W
Humidity55%
Visibility—
Dew point29°
Tue, 2043° / 30°0.04Snow
43 °Snow

Dewey, Tuesday, 20 October

Snow. High 43°, low 30°.

Pressure29.77 inHg
Wind19.3 mph W
Humidity55%
Visibility—
Dew point27°
Wed, 2148° / 26°0Overcast
48 °Overcast

Dewey, Wednesday, 21 October

Overcast. High 48°, low 26°.

Pressure30.06 inHg
Wind7.2 mph S
Humidity33%
Visibility—
Dew point14°
Thu, 2240° / 25°0.17Snow
40 °Snow

Dewey, Thursday, 22 October

Snow. High 40°, low 25°.

Pressure29.97 inHg
Wind11.9 mph W
Humidity60%
Visibility—
Dew point25°
Fri, 2340° / 23°0Mostly clear
40 °Mostly clear

Dewey, Friday, 23 October

Mostly clear. High 40°, low 23°.

Pressure30.39 inHg
Wind7.7 mph W
Humidity56%
Visibility—
Dew point21°
Sat, 2447° / 25°0Overcast
47 °Overcast

Dewey, Saturday, 24 October

Overcast. High 47°, low 25°.

Pressure30.30 inHg
Wind6.4 mph SW
Humidity36%
Visibility—
Dew point16°
Sun, 2554° / 31°0Mostly clear
54 °Mostly clear

Dewey, Sunday, 25 October

Mostly clear. High 54°, low 31°.

Pressure30.42 inHg
Wind4.4 mph W
Humidity37%
Visibility—
Dew point26°

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.