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As of 19:55 MDT

Weather in Dewey, MT

35°Current weather

Dewey, Thursday, 15 October, 19:55

Clear. Feels like 35°. High 46°, low 27°.

Pressure30.62 inHg
Wind1.3 mph S
Humidity83%
Visibility6.2 mi
Dew point31°
Fri, 1657° / 27°0Overcast
57 °Overcast

Dewey, Friday, 16 October

Overcast. High 57°, low 27°.

Pressure30.47 inHg
Wind1.4 mph W
Humidity48%
Visibility6.2 mi
Dew point22°
Sat, 1760° / 32°0Overcast
60 °Overcast

Dewey, Saturday, 17 October

Overcast. High 60°, low 32°.

Pressure30.12 inHg
Wind1.6 mph W
Humidity43%
Visibility6.2 mi
Dew point25°
Sun, 1859° / 35°0Clear
59 °Clear

Dewey, Sunday, 18 October

Clear. High 59°, low 35°.

Pressure30.06 inHg
Wind0.6 mph SW
Humidity52%
Visibility6.2 mi
Dew point29°
Mon, 1960° / 35°0Overcast
60 °Overcast

Dewey, Monday, 19 October

Overcast. High 60°, low 35°.

Pressure29.85 inHg
Wind1.5 mph SE
Humidity51%
Visibility6.2 mi
Dew point34°
Tue, 2056° / 41°0.19Light rain
56 °Light rain

Dewey, Tuesday, 20 October

Light rain. High 56°, low 41°.

Pressure29.83 inHg
Wind2.5 mph SW
Humidity53%
Visibility—
Dew point38°
Wed, 2159° / 34°0.03Light rain
59 °Light rain

Dewey, Wednesday, 21 October

Light rain. High 59°, low 34°.

Pressure30.00 inHg
Wind5.1 mph S
Humidity60%
Visibility—
Dew point38°
Thu, 2257° / 42°0.14Light rain
57 °Light rain

Dewey, Thursday, 22 October

Light rain. High 57°, low 42°.

Pressure29.74 inHg
Wind5.3 mph S
Humidity47%
Visibility—
Dew point35°
Fri, 2341° / 25°0.82Snow
41 °Snow

Dewey, Friday, 23 October

Snow. High 41°, low 25°.

Pressure30.09 inHg
Wind9.2 mph W
Humidity64%
Visibility—
Dew point23°
Sat, 2437° / 24°0.02Light snow
37 °Light snow

Dewey, Saturday, 24 October

Light snow. High 37°, low 24°.

Pressure30.47 inHg
Wind4.8 mph SW
Humidity54%
Visibility—
Dew point18°
Sun, 2542° / 23°0Overcast
42 °Overcast

Dewey, Sunday, 25 October

Overcast. High 42°, low 23°.

Pressure30.24 inHg
Wind5.6 mph SW
Humidity52%
Visibility—
Dew point21°
Mon, 2636° / 24°0.28Snow
36 °Snow

Dewey, Monday, 26 October

Snow. High 36°, low 24°.

Pressure30.03 inHg
Wind6 mph N
Humidity75%
Visibility—
Dew point28°
Tue, 2739° / 20°0Partly cloudy
39 °Partly cloudy

Dewey, Tuesday, 27 October

Partly cloudy. High 39°, low 20°.

Pressure30.00 inHg
Wind6 mph SW
Humidity72%
Visibility—
Dew point24°
Wed, 2841° / 26°0.03Light snow
41 °Light snow

Dewey, Wednesday, 28 October

Light snow. High 41°, low 26°.

Pressure29.80 inHg
Wind14.1 mph W
Humidity63%
Visibility—
Dew point27°
Thu, 2944° / 26°0Overcast
44 °Overcast

Dewey, Thursday, 29 October

Overcast. High 44°, low 26°.

Pressure30.00 inHg
Wind5.9 mph SW
Humidity60%
Visibility—
Dew point26°
Fri, 3047° / 30°0.03Light snow
47 °Light snow

Dewey, Friday, 30 October

Light snow. High 47°, low 30°.

Pressure29.85 inHg
Wind12.2 mph SW
Humidity72%
Visibility—
Dew point35°

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.