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As of 16:38 MDT

Weather in Custer, MT

98°Current weather

Custer, Saturday, 8 August, 16:38

Clear. Feels like 92°. High 98°, low 64°.

Pressure29.71 inHg
Wind20.6 mph N
Humidity9%
Visibility6.2 mi
Dew point32°
Sun, 0995° / 64°0Clear
95 °Clear

Custer, Sunday, 9 August

Clear. High 95°, low 64°.

Pressure29.77 inHg
Wind9.4 mph N
Humidity13%
Visibility6.2 mi
Dew point35°
Mon, 1092° / 57°0Clear
92 °Clear

Custer, Monday, 10 August

Clear. High 92°, low 57°.

Pressure29.85 inHg
Wind6 mph NE
Humidity26%
Visibility6.2 mi
Dew point42°
Tue, 1195° / 64°0Clear
95 °Clear

Custer, Tuesday, 11 August

Clear. High 95°, low 64°.

Pressure29.85 inHg
Wind8 mph N
Humidity20%
Visibility6.2 mi
Dew point43°
Wed, 1291° / 66°0Overcast
91 °Overcast

Custer, Wednesday, 12 August

Overcast. High 91°, low 66°.

Pressure29.83 inHg
Wind13.5 mph NE
Humidity24%
Visibility6.2 mi
Dew point44°
Thu, 1396° / 67°0Partly cloudy
96 °Partly cloudy

Custer, Thursday, 13 August

Partly cloudy. High 96°, low 67°.

Pressure29.85 inHg
Wind31.8 mph E
Humidity35%
Visibility—
Dew point54°
Fri, 1495° / 75°0.01Light rain
95 °Light rain

Custer, Friday, 14 August

Light rain. High 95°, low 75°.

Pressure29.80 inHg
Wind16.8 mph N
Humidity33%
Visibility—
Dew point53°
Sat, 1591° / 67°0.02Light rain
91 °Light rain

Custer, Saturday, 15 August

Light rain. High 91°, low 67°.

Pressure29.94 inHg
Wind15.8 mph SW
Humidity33%
Visibility—
Dew point53°
Sun, 1696° / 63°0.03Light rain
96 °Light rain

Custer, Sunday, 16 August

Light rain. High 96°, low 63°.

Pressure29.94 inHg
Wind16.4 mph S
Humidity22%
Visibility—
Dew point43°
Mon, 1797° / 69°0Overcast
97 °Overcast

Custer, Monday, 17 August

Overcast. High 97°, low 69°.

Pressure29.91 inHg
Wind17.6 mph N
Humidity20%
Visibility—
Dew point43°
Tue, 1899° / 70°0Overcast
99 °Overcast

Custer, Tuesday, 18 August

Overcast. High 99°, low 70°.

Pressure29.85 inHg
Wind11.8 mph SE
Humidity16%
Visibility—
Dew point40°
Wed, 1981° / 66°0Clear
81 °Clear

Custer, Wednesday, 19 August

Clear. High 81°, low 66°.

Pressure30.00 inHg
Wind22.5 mph N
Humidity42%
Visibility—
Dew point53°
Thu, 2094° / 62°0Overcast
94 °Overcast

Custer, Thursday, 20 August

Overcast. High 94°, low 62°.

Pressure29.88 inHg
Wind10.7 mph E
Humidity28%
Visibility—
Dew point47°
Fri, 21100° / 70°0Mostly clear
100 °Mostly clear

Custer, Friday, 21 August

Mostly clear. High 100°, low 70°.

Pressure29.80 inHg
Wind17.7 mph N
Humidity16%
Visibility—
Dew point39°
Sat, 2296° / 67°0.01Light rain
96 °Light rain

Custer, Saturday, 22 August

Light rain. High 96°, low 67°.

Pressure29.91 inHg
Wind20.6 mph E
Humidity25%
Visibility—
Dew point46°
Sun, 2393° / 66°0Clear
93 °Clear

Custer, Sunday, 23 August

Clear. High 93°, low 66°.

Pressure30.00 inHg
Wind15.7 mph NE
Humidity27%
Visibility—
Dew point47°

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.