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As of 13:17 MDT

Weather in Custer, SD

90°Current weather

Custer, Saturday, 8 August, 13:17

Clear. Feels like 87°. High 90°, low 58°.

Pressure29.77 inHg
Wind6 mph SW
Humidity22%
Visibility6.2 mi
Dew point45°
Sun, 0983° / 61°0Overcast
83 °Overcast

Custer, Sunday, 9 August

Overcast. High 83°, low 61°.

Pressure29.83 inHg
Wind10.1 mph SE
Humidity19%
Visibility6.2 mi
Dew point37°
Mon, 1092° / 60°0Mostly clear
92 °Mostly clear

Custer, Monday, 10 August

Mostly clear. High 92°, low 60°.

Pressure29.77 inHg
Wind8.7 mph S
Humidity20%
Visibility6.2 mi
Dew point43°
Tue, 1185° / 60°0Light rain
85 °Light rain

Custer, Tuesday, 11 August

Light rain. High 85°, low 60°.

Pressure29.85 inHg
Wind9.8 mph E
Humidity32%
Visibility6.2 mi
Dew point49°
Wed, 1285° / 60°0Partly cloudy
85 °Partly cloudy

Custer, Wednesday, 12 August

Partly cloudy. High 85°, low 60°.

Pressure29.80 inHg
Wind10.4 mph SE
Humidity26%
Visibility6.2 mi
Dew point47°
Thu, 1368° / 54°0.06Light rain
68 °Light rain

Custer, Thursday, 13 August

Light rain. High 68°, low 54°.

Pressure30.09 inHg
Wind11.6 mph E
Humidity85%
Visibility—
Dew point55°
Fri, 1484° / 58°0.03Light rain
84 °Light rain

Custer, Friday, 14 August

Light rain. High 84°, low 58°.

Pressure29.94 inHg
Wind16.5 mph S
Humidity45%
Visibility—
Dew point52°
Sat, 1582° / 59°0.01Light rain
82 °Light rain

Custer, Saturday, 15 August

Light rain. High 82°, low 59°.

Pressure30.03 inHg
Wind12.4 mph E
Humidity31%
Visibility—
Dew point44°
Sun, 1688° / 63°0Clear
88 °Clear

Custer, Sunday, 16 August

Clear. High 88°, low 63°.

Pressure29.97 inHg
Wind11.1 mph E
Humidity20%
Visibility—
Dew point39°
Mon, 1789° / 63°0Overcast
89 °Overcast

Custer, Monday, 17 August

Overcast. High 89°, low 63°.

Pressure30.00 inHg
Wind12.5 mph E
Humidity32%
Visibility—
Dew point48°
Tue, 1888° / 66°0Light rain
88 °Light rain

Custer, Tuesday, 18 August

Light rain. High 88°, low 66°.

Pressure30.00 inHg
Wind12.8 mph SE
Humidity19%
Visibility—
Dew point37°
Wed, 1982° / 59°0.02Light rain
82 °Light rain

Custer, Wednesday, 19 August

Light rain. High 82°, low 59°.

Pressure29.88 inHg
Wind13.8 mph E
Humidity28%
Visibility—
Dew point44°
Thu, 2079° / 53°0.01Light rain
79 °Light rain

Custer, Thursday, 20 August

Light rain. High 79°, low 53°.

Pressure30.00 inHg
Wind9.2 mph S
Humidity43%
Visibility—
Dew point48°
Fri, 2188° / 62°0Mostly clear
88 °Mostly clear

Custer, Friday, 21 August

Mostly clear. High 88°, low 62°.

Pressure29.85 inHg
Wind9.6 mph E
Humidity23%
Visibility—
Dew point40°
Sat, 2272° / 56°0.06Light rain
72 °Light rain

Custer, Saturday, 22 August

Light rain. High 72°, low 56°.

Pressure30.09 inHg
Wind11.6 mph E
Humidity44%
Visibility—
Dew point47°
Sun, 2382° / 55°0.28Rain
82 °Rain

Custer, Sunday, 23 August

Rain. High 82°, low 55°.

Pressure30.00 inHg
Wind6.6 mph E
Humidity35%
Visibility—
Dew point48°

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, SD 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, SD 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.