As of 08:46 MDT

Weather in Dewey, MT

27°

Dewey, Wednesday, 14 October, 08:46

Partly cloudy. Feels like 21°. High 45°, low 25°.

Pressure30.21 inHg

Wind4.7 mph W

Humidity93%

Visibility6.2 mi

Dew point25°

See detailed hourly forecast

Thu, 1545° / 27°

45 °

Dewey, Thursday, 15 October

Clear. High 45°, low 27°.

Pressure30.65 inHg

Wind2.1 mph E

Humidity72%

Visibility6.2 mi

Dew point28°

Fri, 1657° / 27°

57 °

Dewey, Friday, 16 October

Mostly clear. High 57°, low 27°.

Pressure30.47 inHg

Wind1.3 mph W

Humidity49%

Visibility6.2 mi

Dew point22°

Sat, 1760° / 32°

60 °

Dewey, Saturday, 17 October

Overcast. High 60°, low 32°.

Pressure30.15 inHg

Wind1.2 mph W

Humidity45%

Visibility6.2 mi

Dew point26°

Sun, 1858° / 35°

58 °

Dewey, Sunday, 18 October

Clear. High 58°, low 35°.

Pressure30.12 inHg

Wind2.7 mph S

Humidity53%

Visibility—

Dew point34°

Mon, 1961° / 36°

61 °

Dewey, Monday, 19 October

Light rain. High 61°, low 36°.

Pressure29.88 inHg

Wind6 mph S

Humidity49%

Visibility—

Dew point34°

Tue, 2059° / 43°

0.15

59 °

Dewey, Tuesday, 20 October

Light rain. High 59°, low 43°.

Pressure29.83 inHg

Wind6.1 mph NW

Humidity35%

Visibility—

Dew point29°

Wed, 2159° / 39°

0.01

59 °

Dewey, Wednesday, 21 October

Light rain. High 59°, low 39°.

Pressure30.00 inHg

Wind3.6 mph S

Humidity55%

Visibility—

Dew point36°

Thu, 2263° / 41°

63 °

Dewey, Thursday, 22 October

Clear. High 63°, low 41°.

Pressure29.83 inHg

Wind4.5 mph SW

Humidity36%

Visibility—

Dew point30°

Fri, 2352° / 37°

52 °

Dewey, Friday, 23 October

Overcast. High 52°, low 37°.

Pressure30.03 inHg

Wind7.6 mph N

Humidity44%

Visibility—

Dew point27°

Sat, 2459° / 32°

59 °

Dewey, Saturday, 24 October

Partly cloudy. High 59°, low 32°.

Pressure30.33 inHg

Wind6.4 mph SW

Humidity19%

Visibility—

Dew point9°

Sun, 2560° / 36°

60 °

Dewey, Sunday, 25 October

Overcast. High 60°, low 36°.

Pressure30.27 inHg

Wind6.3 mph SW

Humidity20%

Visibility—

Dew point13°

Mon, 2660° / 40°

60 °

Dewey, Monday, 26 October

Overcast. High 60°, low 40°.

Pressure30.03 inHg

Wind6.2 mph W

Humidity24%

Visibility—

Dew point18°

Tue, 2747° / 32°

0.02

47 °

Dewey, Tuesday, 27 October

Light rain. High 47°, low 32°.

Pressure30.00 inHg

Wind12.8 mph NW

Humidity39%

Visibility—

Dew point22°

Wed, 2855° / 30°

55 °

Dewey, Wednesday, 28 October

Overcast. High 55°, low 30°.

Pressure29.94 inHg

Wind5.7 mph SW

Humidity18%

Visibility—

Dew point6°

Thu, 2958° / 38°

58 °

Dewey, Thursday, 29 October

Overcast. High 58°, low 38°.

Pressure29.88 inHg

Wind14.3 mph SW

Humidity29%

Visibility—

Dew point21°

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.