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As of 13:17 MDT

Weather in Dewey, MT

30°Current weather

Dewey, Sunday, 11 October, 13:17

Snow. Feels like 26°. High 31°, low 28°.

Pressure29.88 inHg
Wind3.8 mph E
Humidity92%
Visibility1.2 mi
Dew point29°
Mon, 1240° / 23°0.06Snow
40 °Snow

Dewey, Monday, 12 October

Snow. High 40°, low 23°.

Pressure30.03 inHg
Wind2.4 mph E
Humidity94%
Visibility6.2 mi
Dew point26°
Tue, 1347° / 23°0Clear
47 °Clear

Dewey, Tuesday, 13 October

Clear. High 47°, low 23°.

Pressure30.03 inHg
Wind1.6 mph N
Humidity68%
Visibility6.2 mi
Dew point26°
Wed, 1453° / 20°0Clear
53 °Clear

Dewey, Wednesday, 14 October

Clear. High 53°, low 20°.

Pressure30.15 inHg
Wind1.6 mph W
Humidity54%
Visibility6.2 mi
Dew point17°
Thu, 1552° / 29°0Clear
52 °Clear

Dewey, Thursday, 15 October

Clear. High 52°, low 29°.

Pressure30.53 inHg
Wind2.6 mph SE
Humidity62%
Visibility6.2 mi
Dew point31°
Fri, 1659° / 30°0Clear
59 °Clear

Dewey, Friday, 16 October

Clear. High 59°, low 30°.

Pressure30.42 inHg
Wind2.8 mph SW
Humidity48%
Visibility—
Dew point32°
Sat, 1764° / 37°0Overcast
64 °Overcast

Dewey, Saturday, 17 October

Overcast. High 64°, low 37°.

Pressure30.09 inHg
Wind7.1 mph SW
Humidity39%
Visibility—
Dew point32°
Sun, 1864° / 41°0Overcast
64 °Overcast

Dewey, Sunday, 18 October

Overcast. High 64°, low 41°.

Pressure29.97 inHg
Wind11.5 mph W
Humidity32%
Visibility—
Dew point27°
Mon, 1960° / 44°0Overcast
60 °Overcast

Dewey, Monday, 19 October

Overcast. High 60°, low 44°.

Pressure29.85 inHg
Wind13.6 mph SW
Humidity26%
Visibility—
Dew point23°
Tue, 2049° / 36°0Overcast
49 °Overcast

Dewey, Tuesday, 20 October

Overcast. High 49°, low 36°.

Pressure30.03 inHg
Wind7 mph W
Humidity56%
Visibility—
Dew point27°
Wed, 2150° / 33°0Overcast
50 °Overcast

Dewey, Wednesday, 21 October

Overcast. High 50°, low 33°.

Pressure30.03 inHg
Wind4.9 mph W
Humidity42%
Visibility—
Dew point22°
Thu, 2254° / 31°0Clear
54 °Clear

Dewey, Thursday, 22 October

Clear. High 54°, low 31°.

Pressure30.09 inHg
Wind5 mph W
Humidity23%
Visibility—
Dew point11°
Fri, 2361° / 37°0Mostly clear
61 °Mostly clear

Dewey, Friday, 23 October

Mostly clear. High 61°, low 37°.

Pressure29.97 inHg
Wind12 mph SW
Humidity19%
Visibility—
Dew point12°
Sat, 2457° / 34°0Overcast
57 °Overcast

Dewey, Saturday, 24 October

Overcast. High 57°, low 34°.

Pressure30.03 inHg
Wind13 mph W
Humidity20%
Visibility—
Dew point13°
Sun, 2558° / 32°0Overcast
58 °Overcast

Dewey, Sunday, 25 October

Overcast. High 58°, low 32°.

Pressure30.30 inHg
Wind5.4 mph W
Humidity16%
Visibility—
Dew point6°
Mon, 2662° / 38°0Partly cloudy
62 °Partly cloudy

Dewey, Monday, 26 October

Partly cloudy. High 62°, low 38°.

Pressure30.03 inHg
Wind13.5 mph W
Humidity23%
Visibility—
Dew point18°

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.