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As of 19:46 MDT

Weather in Hartley, SD

89°Current weather

Hartley, Saturday, 8 August, 19:46

Clear. Feels like 86°. High 98°, low 64°.

Pressure29.68 inHg
Wind2.5 mph E
Humidity26%
Visibility6.2 mi
Dew point50°
Sun, 0993° / 67°0Overcast
93 °Overcast

Hartley, Sunday, 9 August

Overcast. High 93°, low 67°.

Pressure29.83 inHg
Wind15.9 mph E
Humidity32%
Visibility6.2 mi
Dew point53°
Mon, 10102° / 67°0Light rain
102 °Light rain

Hartley, Monday, 10 August

Light rain. High 102°, low 67°.

Pressure29.71 inHg
Wind13.6 mph SE
Humidity29%
Visibility6.2 mi
Dew point57°
Tue, 1192° / 67°0.08Light rain
92 °Light rain

Hartley, Tuesday, 11 August

Light rain. High 92°, low 67°.

Pressure29.85 inHg
Wind9.3 mph E
Humidity40%
Visibility6.2 mi
Dew point59°
Wed, 1290° / 68°0.2Light rain
90 °Light rain

Hartley, Wednesday, 12 August

Light rain. High 90°, low 68°.

Pressure29.85 inHg
Wind10.4 mph SE
Humidity40%
Visibility6.2 mi
Dew point59°
Thu, 1375° / 63°0.83Heavy rain
75 °Heavy rain

Hartley, Thursday, 13 August

Heavy rain. High 75°, low 63°.

Pressure29.97 inHg
Wind19.8 mph E
Humidity57%
Visibility—
Dew point57°
Fri, 1478° / 62°0.02Light rain
78 °Light rain

Hartley, Friday, 14 August

Light rain. High 78°, low 62°.

Pressure30.03 inHg
Wind19.1 mph SE
Humidity49%
Visibility—
Dew point52°
Sat, 1582° / 66°0Overcast
82 °Overcast

Hartley, Saturday, 15 August

Overcast. High 82°, low 66°.

Pressure30.06 inHg
Wind15.2 mph S
Humidity59%
Visibility—
Dew point60°
Sun, 1683° / 68°0.04Light rain
83 °Light rain

Hartley, Sunday, 16 August

Light rain. High 83°, low 68°.

Pressure30.06 inHg
Wind14.4 mph NE
Humidity68%
Visibility—
Dew point62°
Mon, 1794° / 64°0.03Light rain
94 °Light rain

Hartley, Monday, 17 August

Light rain. High 94°, low 64°.

Pressure29.94 inHg
Wind25.5 mph S
Humidity44%
Visibility—
Dew point58°
Tue, 1893° / 71°0.01Light rain
93 °Light rain

Hartley, Tuesday, 18 August

Light rain. High 93°, low 71°.

Pressure29.91 inHg
Wind26 mph NE
Humidity28%
Visibility—
Dew point49°
Wed, 1978° / 61°0Clear
78 °Clear

Hartley, Wednesday, 19 August

Clear. High 78°, low 61°.

Pressure30.12 inHg
Wind15.6 mph SE
Humidity41%
Visibility—
Dew point47°
Thu, 2078° / 63°0.37Rain
78 °Rain

Hartley, Thursday, 20 August

Rain. High 78°, low 63°.

Pressure29.97 inHg
Wind17.4 mph SE
Humidity73%
Visibility—
Dew point58°
Fri, 2187° / 64°0.47Rain
87 °Rain

Hartley, Friday, 21 August

Rain. High 87°, low 64°.

Pressure29.65 inHg
Wind25.4 mph W
Humidity40%
Visibility—
Dew point57°
Sat, 2282° / 65°0Clear
82 °Clear

Hartley, Saturday, 22 August

Clear. High 82°, low 65°.

Pressure29.85 inHg
Wind13.8 mph N
Humidity39%
Visibility—
Dew point51°
Sun, 2385° / 63°0Mostly clear
85 °Mostly clear

Hartley, Sunday, 23 August

Mostly clear. High 85°, low 63°.

Pressure29.91 inHg
Wind16.6 mph SE
Humidity28%
Visibility—
Dew point42°

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 Hartley, 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 Hartley, 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.