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As of 18:15 MDT

Weather in Thunder Butte, SD

96°Current weather

Thunder Butte, Saturday, 8 August, 18:15

Clear. Feels like 93°. High 96°, low 62°.

Pressure29.62 inHg
Wind4.9 mph W
Humidity20%
Visibility6.2 mi
Dew point47°
Sun, 0992° / 63°0Overcast
92 °Overcast

Thunder Butte, Sunday, 9 August

Overcast. High 92°, low 63°.

Pressure29.83 inHg
Wind14.8 mph E
Humidity29%
Visibility6.2 mi
Dew point50°
Mon, 10100° / 68°0.06Rain
100 °Rain

Thunder Butte, Monday, 10 August

Rain. High 100°, low 68°.

Pressure29.74 inHg
Wind5.7 mph S
Humidity35%
Visibility6.2 mi
Dew point61°
Tue, 1192° / 65°0Clear
92 °Clear

Thunder Butte, Tuesday, 11 August

Clear. High 92°, low 65°.

Pressure29.85 inHg
Wind8.8 mph NE
Humidity38%
Visibility6.2 mi
Dew point57°
Wed, 1290° / 66°0.74Heavy rain
90 °Heavy rain

Thunder Butte, Wednesday, 12 August

Heavy rain. High 90°, low 66°.

Pressure29.83 inHg
Wind8.6 mph E
Humidity33%
Visibility6.2 mi
Dew point56°
Thu, 1380° / 60°0Overcast
80 °Overcast

Thunder Butte, Thursday, 13 August

Overcast. High 80°, low 60°.

Pressure30.06 inHg
Wind13.8 mph E
Humidity40%
Visibility—
Dew point47°
Fri, 1491° / 64°0.46Rain
91 °Rain

Thunder Butte, Friday, 14 August

Rain. High 91°, low 64°.

Pressure29.97 inHg
Wind24.7 mph SE
Humidity38%
Visibility—
Dew point54°
Sat, 1590° / 70°0.13Rain
90 °Rain

Thunder Butte, Saturday, 15 August

Rain. High 90°, low 70°.

Pressure29.97 inHg
Wind9.4 mph S
Humidity47%
Visibility—
Dew point61°
Sun, 1691° / 74°0.11Light rain
91 °Light rain

Thunder Butte, Sunday, 16 August

Light rain. High 91°, low 74°.

Pressure29.91 inHg
Wind9.5 mph NW
Humidity50%
Visibility—
Dew point65°
Mon, 1794° / 69°0.02Light rain
94 °Light rain

Thunder Butte, Monday, 17 August

Light rain. High 94°, low 69°.

Pressure30.00 inHg
Wind18.5 mph NE
Humidity48%
Visibility—
Dew point59°
Tue, 1894° / 71°0.01Light rain
94 °Light rain

Thunder Butte, Tuesday, 18 August

Light rain. High 94°, low 71°.

Pressure29.94 inHg
Wind13.8 mph N
Humidity21%
Visibility—
Dew point43°
Wed, 1981° / 70°0.23Rain
81 °Rain

Thunder Butte, Wednesday, 19 August

Rain. High 81°, low 70°.

Pressure30.00 inHg
Wind23 mph E
Humidity53%
Visibility—
Dew point57°
Thu, 2084° / 66°0Overcast
84 °Overcast

Thunder Butte, Thursday, 20 August

Overcast. High 84°, low 66°.

Pressure30.00 inHg
Wind9.1 mph E
Humidity35%
Visibility—
Dew point49°
Fri, 2196° / 70°0Clear
96 °Clear

Thunder Butte, Friday, 21 August

Clear. High 96°, low 70°.

Pressure29.83 inHg
Wind7.9 mph SE
Humidity34%
Visibility—
Dew point55°
Sat, 2277° / 56°0Partly cloudy
77 °Partly cloudy

Thunder Butte, Saturday, 22 August

Partly cloudy. High 77°, low 56°.

Pressure30.15 inHg
Wind19.8 mph NE
Humidity41%
Visibility—
Dew point44°
Sun, 2385° / 60°0Partly cloudy
85 °Partly cloudy

Thunder Butte, Sunday, 23 August

Partly cloudy. High 85°, low 60°.

Pressure30.06 inHg
Wind13.1 mph SE
Humidity40%
Visibility—
Dew point51°

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 Thunder Butte, 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 Thunder Butte, 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.