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As of 12:40 MDT

Weather in Spearfish, SD

92°Current weather

Spearfish, Saturday, 8 August, 12:40

Clear. Feels like 88°. High 92°, low 62°.

Pressure29.74 inHg
Wind1 mph NE
Humidity9%
Visibility6.2 mi
Dew point26°
Sun, 0985° / 64°0Clear
85 °Clear

Spearfish, Sunday, 9 August

Clear. High 85°, low 64°.

Pressure29.80 inHg
Wind13.7 mph E
Humidity22%
Visibility6.2 mi
Dew point44°
Mon, 1095° / 63°0Clear
95 °Clear

Spearfish, Monday, 10 August

Clear. High 95°, low 63°.

Pressure29.77 inHg
Wind9.4 mph NE
Humidity23%
Visibility6.2 mi
Dew point47°
Tue, 1188° / 65°0.05Light rain
88 °Light rain

Spearfish, Tuesday, 11 August

Light rain. High 88°, low 65°.

Pressure29.85 inHg
Wind13.4 mph E
Humidity35%
Visibility6.2 mi
Dew point54°
Wed, 1286° / 61°0.01Light rain
86 °Light rain

Spearfish, Wednesday, 12 August

Light rain. High 86°, low 61°.

Pressure29.77 inHg
Wind10.3 mph NE
Humidity29%
Visibility6.2 mi
Dew point51°
Thu, 1377° / 58°0.17Light rain
77 °Light rain

Spearfish, Thursday, 13 August

Light rain. High 77°, low 58°.

Pressure29.97 inHg
Wind17.3 mph SE
Humidity48%
Visibility—
Dew point53°
Fri, 1494° / 64°0.28Rain
94 °Rain

Spearfish, Friday, 14 August

Rain. High 94°, low 64°.

Pressure29.83 inHg
Wind17.1 mph N
Humidity28%
Visibility—
Dew point49°
Sat, 1583° / 63°0Overcast
83 °Overcast

Spearfish, Saturday, 15 August

Overcast. High 83°, low 63°.

Pressure30.03 inHg
Wind14.7 mph E
Humidity42%
Visibility—
Dew point54°
Sun, 1690° / 67°0Mostly clear
90 °Mostly clear

Spearfish, Sunday, 16 August

Mostly clear. High 90°, low 67°.

Pressure29.97 inHg
Wind13.7 mph NW
Humidity29%
Visibility—
Dew point48°
Mon, 1793° / 65°0.02Light rain
93 °Light rain

Spearfish, Monday, 17 August

Light rain. High 93°, low 65°.

Pressure29.91 inHg
Wind14.7 mph E
Humidity23%
Visibility—
Dew point46°
Tue, 1894° / 68°0Clear
94 °Clear

Spearfish, Tuesday, 18 August

Clear. High 94°, low 68°.

Pressure29.94 inHg
Wind19.1 mph SE
Humidity20%
Visibility—
Dew point42°
Wed, 1982° / 66°0.02Light rain
82 °Light rain

Spearfish, Wednesday, 19 August

Light rain. High 82°, low 66°.

Pressure29.97 inHg
Wind15.8 mph E
Humidity43%
Visibility—
Dew point52°
Thu, 2084° / 60°0Overcast
84 °Overcast

Spearfish, Thursday, 20 August

Overcast. High 84°, low 60°.

Pressure29.94 inHg
Wind14.6 mph E
Humidity37%
Visibility—
Dew point50°
Fri, 2192° / 67°0Clear
92 °Clear

Spearfish, Friday, 21 August

Clear. High 92°, low 67°.

Pressure29.83 inHg
Wind10.1 mph NE
Humidity23%
Visibility—
Dew point46°
Sat, 2281° / 56°0.05Light rain
81 °Light rain

Spearfish, Saturday, 22 August

Light rain. High 81°, low 56°.

Pressure30.06 inHg
Wind16.2 mph E
Humidity41%
Visibility—
Dew point47°
Sun, 2386° / 60°0.1Light rain
86 °Light rain

Spearfish, Sunday, 23 August

Light rain. High 86°, low 60°.

Pressure30.03 inHg
Wind11.2 mph N
Humidity41%
Visibility—
Dew point52°

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 Spearfish, 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 Spearfish, 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.