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As of 19:33 MDT

Weather in Dewey, MT

27°Current weather

Dewey, Sunday, 11 October, 19:33

Light snow. Feels like 23°. High 31°, low 26°.

Pressure29.94 inHg
Wind3 mph E
Humidity96%
Visibility2.2 mi
Dew point26°
Mon, 1236° / 25°0.02Light snow
36 °Light snow

Dewey, Monday, 12 October

Light snow. High 36°, low 25°.

Pressure30.03 inHg
Wind2.6 mph E
Humidity95%
Visibility6.2 mi
Dew point26°
Tue, 1347° / 22°0Clear
47 °Clear

Dewey, Tuesday, 13 October

Clear. High 47°, low 22°.

Pressure30.09 inHg
Wind1.1 mph NW
Humidity76%
Visibility3.4 mi
Dew point27°
Wed, 1452° / 22°0Clear
52 °Clear

Dewey, Wednesday, 14 October

Clear. High 52°, low 22°.

Pressure30.15 inHg
Wind3 mph W
Humidity59%
Visibility6.2 mi
Dew point24°
Thu, 1551° / 26°0Clear
51 °Clear

Dewey, Thursday, 15 October

Clear. High 51°, low 26°.

Pressure30.59 inHg
Wind1.9 mph SE
Humidity64%
Visibility6.2 mi
Dew point29°
Fri, 1658° / 30°0Clear
58 °Clear

Dewey, Friday, 16 October

Clear. High 58°, low 30°.

Pressure30.42 inHg
Wind2.3 mph W
Humidity45%
Visibility—
Dew point30°
Sat, 1762° / 33°0Overcast
62 °Overcast

Dewey, Saturday, 17 October

Overcast. High 62°, low 33°.

Pressure30.03 inHg
Wind9 mph SW
Humidity44%
Visibility—
Dew point31°
Sun, 1861° / 42°0Overcast
61 °Overcast

Dewey, Sunday, 18 October

Overcast. High 61°, low 42°.

Pressure29.91 inHg
Wind14.2 mph W
Humidity28%
Visibility—
Dew point25°
Mon, 1962° / 42°0Overcast
62 °Overcast

Dewey, Monday, 19 October

Overcast. High 62°, low 42°.

Pressure29.74 inHg
Wind13.5 mph W
Humidity30%
Visibility—
Dew point25°
Tue, 2042° / 31°0.22Snow
42 °Snow

Dewey, Tuesday, 20 October

Snow. High 42°, low 31°.

Pressure29.83 inHg
Wind11.8 mph W
Humidity66%
Visibility—
Dew point28°
Wed, 2140° / 26°0Overcast
40 °Overcast

Dewey, Wednesday, 21 October

Overcast. High 40°, low 26°.

Pressure30.15 inHg
Wind12.5 mph W
Humidity59%
Visibility—
Dew point22°
Thu, 2253° / 28°0Overcast
53 °Overcast

Dewey, Thursday, 22 October

Overcast. High 53°, low 28°.

Pressure30.24 inHg
Wind6.6 mph W
Humidity53%
Visibility—
Dew point29°
Fri, 2359° / 34°0Overcast
59 °Overcast

Dewey, Friday, 23 October

Overcast. High 59°, low 34°.

Pressure29.88 inHg
Wind7.2 mph S
Humidity38%
Visibility—
Dew point26°
Sat, 2447° / 31°0.06Snow
47 °Snow

Dewey, Saturday, 24 October

Snow. High 47°, low 31°.

Pressure29.68 inHg
Wind10.8 mph NW
Humidity45%
Visibility—
Dew point26°
Sun, 2550° / 28°0Mostly clear
50 °Mostly clear

Dewey, Sunday, 25 October

Mostly clear. High 50°, low 28°.

Pressure29.94 inHg
Wind3.8 mph W
Humidity43%
Visibility—
Dew point22°
Mon, 2653° / 32°0Mostly clear
53 °Mostly clear

Dewey, Monday, 26 October

Mostly clear. High 53°, low 32°.

Pressure30.06 inHg
Wind4.5 mph W
Humidity34%
Visibility—
Dew point20°

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.