As of 15:50 MDT

Weather in Custer, MT

79°

Custer, Wednesday, 7 October, 15:50

Overcast. Feels like 79°. High 79°, low 48°.

Pressure29.97 inHg

Wind3.6 mph NE

Humidity23%

Visibility6.2 mi

Dew point38°

See detailed hourly forecast

Thu, 0882° / 47°

82 °

Custer, Thursday, 8 October

Clear. High 82°, low 47°.

Pressure29.94 inHg

Wind7.2 mph SW

Humidity28%

Visibility6.2 mi

Dew point37°

Fri, 0986° / 49°

86 °

Custer, Friday, 9 October

Partly cloudy. High 86°, low 49°.

Pressure29.53 inHg

Wind7.2 mph SW

Humidity20%

Visibility6.2 mi

Dew point33°

Sat, 1064° / 44°

64 °

Custer, Saturday, 10 October

Overcast. High 64°, low 44°.

Pressure29.65 inHg

Wind7.8 mph NE

Humidity50%

Visibility6.2 mi

Dew point41°

Sun, 1142° / 34°

0.63

42 °

Custer, Sunday, 11 October

Snow. High 42°, low 34°.

Pressure30.15 inHg

Wind11.1 mph NE

Humidity96%

Visibility2.6 mi

Dew point35°

Mon, 1239° / 33°

0.31

39 °

Custer, Monday, 12 October

Snow. High 39°, low 33°.

Pressure30.24 inHg

Wind9.8 mph NE

Humidity86%

Visibility—

Dew point32°

Tue, 1370° / 32°

0.01

70 °

Custer, Tuesday, 13 October

Light rain. High 70°, low 32°.

Pressure29.77 inHg

Wind11.2 mph SW

Humidity61%

Visibility—

Dew point40°

Wed, 1458° / 42°

58 °

Custer, Wednesday, 14 October

Overcast. High 58°, low 42°.

Pressure29.68 inHg

Wind24.4 mph NW

Humidity31%

Visibility—

Dew point25°

Thu, 1539° / 33°

0.04

39 °

Custer, Thursday, 15 October

Light snow. High 39°, low 33°.

Pressure30.33 inHg

Wind20.6 mph NW

Humidity67%

Visibility—

Dew point28°

Fri, 1643° / 28°

43 °

Custer, Friday, 16 October

Clear. High 43°, low 28°.

Pressure30.68 inHg

Wind7.8 mph NW

Humidity52%

Visibility—

Dew point21°

Sat, 1755° / 35°

55 °

Custer, Saturday, 17 October

Clear. High 55°, low 35°.

Pressure30.24 inHg

Wind15.5 mph SE

Humidity56%

Visibility—

Dew point31°

Sun, 1849° / 44°

0.27

49 °

Custer, Sunday, 18 October

Rain. High 49°, low 44°.

Pressure29.71 inHg

Wind13.5 mph W

Humidity67%

Visibility—

Dew point38°

Mon, 1961° / 45°

0.27

61 °

Custer, Monday, 19 October

Rain. High 61°, low 45°.

Pressure29.91 inHg

Wind18.7 mph W

Humidity36%

Visibility—

Dew point28°

Tue, 2059° / 45°

59 °

Custer, Tuesday, 20 October

Overcast. High 59°, low 45°.

Pressure30.24 inHg

Wind6.2 mph W

Humidity45%

Visibility—

Dew point34°

Wed, 2163° / 47°

63 °

Custer, Wednesday, 21 October

Partly cloudy. High 63°, low 47°.

Pressure30.18 inHg

Wind14.8 mph W

Humidity41%

Visibility—

Dew point34°

Thu, 2254° / 45°

54 °

Custer, Thursday, 22 October

Light rain. High 54°, low 45°.

Pressure30.30 inHg

Wind23.5 mph NW

Humidity42%

Visibility—

Dew point29°

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 Custer, 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 Custer, 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.