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As of 11:51 MDT

Weather in Dewey, MT

30°Current weather

Dewey, Monday, 12 October, 11:51

Overcast. Feels like 30°. High 34°, low 25°.

Pressure30.00 inHg
Wind2.7 mph E
Humidity90%
Visibility6.2 mi
Dew point28°
Tue, 1345° / 22°0Clear
45 °Clear

Dewey, Tuesday, 13 October

Clear. High 45°, low 22°.

Pressure30.12 inHg
Wind1.4 mph NW
Humidity76%
Visibility3.2 mi
Dew point26°
Wed, 1451° / 22°0Mostly clear
51 °Mostly clear

Dewey, Wednesday, 14 October

Mostly clear. High 51°, low 22°.

Pressure30.18 inHg
Wind3.1 mph W
Humidity60%
Visibility6.2 mi
Dew point24°
Thu, 1551° / 27°0Clear
51 °Clear

Dewey, Thursday, 15 October

Clear. High 51°, low 27°.

Pressure30.56 inHg
Wind2.4 mph E
Humidity63%
Visibility6.2 mi
Dew point31°
Fri, 1657° / 26°0Clear
57 °Clear

Dewey, Friday, 16 October

Clear. High 57°, low 26°.

Pressure30.45 inHg
Wind2.6 mph W
Humidity48%
Visibility—
Dew point30°
Sat, 1759° / 32°0Partly cloudy
59 °Partly cloudy

Dewey, Saturday, 17 October

Partly cloudy. High 59°, low 32°.

Pressure30.06 inHg
Wind3.5 mph W
Humidity46%
Visibility—
Dew point31°
Sun, 1858° / 41°0Clear
58 °Clear

Dewey, Sunday, 18 October

Clear. High 58°, low 41°.

Pressure29.91 inHg
Wind10.8 mph W
Humidity39%
Visibility—
Dew point29°
Mon, 1960° / 39°0Overcast
60 °Overcast

Dewey, Monday, 19 October

Overcast. High 60°, low 39°.

Pressure29.83 inHg
Wind8.9 mph S
Humidity27%
Visibility—
Dew point20°
Tue, 2048° / 37°0.21Snow
48 °Snow

Dewey, Tuesday, 20 October

Snow. High 48°, low 37°.

Pressure29.62 inHg
Wind7.7 mph S
Humidity77%
Visibility—
Dew point38°
Wed, 2137° / 31°0.02Snow
37 °Snow

Dewey, Wednesday, 21 October

Snow. High 37°, low 31°.

Pressure29.94 inHg
Wind8.9 mph N
Humidity73%
Visibility—
Dew point28°
Thu, 2243° / 31°0.08Light snow
43 °Light snow

Dewey, Thursday, 22 October

Light snow. High 43°, low 31°.

Pressure30.09 inHg
Wind8.6 mph N
Humidity73%
Visibility—
Dew point29°
Fri, 2349° / 31°0.03Snow
49 °Snow

Dewey, Friday, 23 October

Snow. High 49°, low 31°.

Pressure29.94 inHg
Wind7.6 mph W
Humidity73%
Visibility—
Dew point32°
Sat, 2450° / 29°0Clear
50 °Clear

Dewey, Saturday, 24 October

Clear. High 50°, low 29°.

Pressure30.33 inHg
Wind5.7 mph W
Humidity53%
Visibility—
Dew point28°
Sun, 2558° / 31°0Partly cloudy
58 °Partly cloudy

Dewey, Sunday, 25 October

Partly cloudy. High 58°, low 31°.

Pressure30.47 inHg
Wind4.4 mph W
Humidity39%
Visibility—
Dew point26°
Mon, 2665° / 38°0Mostly clear
65 °Mostly clear

Dewey, Monday, 26 October

Mostly clear. High 65°, low 38°.

Pressure30.36 inHg
Wind4.3 mph W
Humidity30%
Visibility—
Dew point26°
Tue, 2767° / 43°0Overcast
67 °Overcast

Dewey, Tuesday, 27 October

Overcast. High 67°, low 43°.

Pressure30.21 inHg
Wind5 mph SW
Humidity33%
Visibility—
Dew point30°

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.