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As of 16:37 CDT

Weather in Harrison, SD

88°Current weather

Harrison, Saturday, 8 August, 16:37

Clear. Feels like 85°. High 88°, low 56°.

Pressure29.80 inHg
Wind12 mph S
Humidity31%
Visibility6.2 mi
Dew point53°
Sun, 0991° / 68°0Light rain
91 °Light rain

Harrison, Sunday, 9 August

Light rain. High 91°, low 68°.

Pressure29.77 inHg
Wind14.6 mph NE
Humidity42%
Visibility6.2 mi
Dew point62°
Mon, 10102° / 67°0.11Rain
102 °Rain

Harrison, Monday, 10 August

Rain. High 102°, low 67°.

Pressure29.77 inHg
Wind9.9 mph SE
Humidity31%
Visibility6.2 mi
Dew point60°
Tue, 1197° / 66°0.02Light rain
97 °Light rain

Harrison, Tuesday, 11 August

Light rain. High 97°, low 66°.

Pressure29.83 inHg
Wind12.2 mph NE
Humidity43%
Visibility6.2 mi
Dew point62°
Wed, 12100° / 69°0.21Rain
100 °Rain

Harrison, Wednesday, 12 August

Rain. High 100°, low 69°.

Pressure29.80 inHg
Wind8.7 mph SE
Humidity34%
Visibility6.2 mi
Dew point60°
Thu, 1384° / 64°0.55Heavy rain
84 °Heavy rain

Harrison, Thursday, 13 August

Heavy rain. High 84°, low 64°.

Pressure30.03 inHg
Wind14.5 mph E
Humidity41%
Visibility—
Dew point52°
Fri, 1489° / 61°0Partly cloudy
89 °Partly cloudy

Harrison, Friday, 14 August

Partly cloudy. High 89°, low 61°.

Pressure30.09 inHg
Wind15.5 mph S
Humidity40%
Visibility—
Dew point54°
Sat, 1588° / 66°0.05Light rain
88 °Light rain

Harrison, Saturday, 15 August

Light rain. High 88°, low 66°.

Pressure30.09 inHg
Wind15 mph S
Humidity75%
Visibility—
Dew point62°
Sun, 1698° / 69°0.04Light rain
98 °Light rain

Harrison, Sunday, 16 August

Light rain. High 98°, low 69°.

Pressure29.91 inHg
Wind12.1 mph S
Humidity45%
Visibility—
Dew point65°
Mon, 1791° / 67°0.01Light rain
91 °Light rain

Harrison, Monday, 17 August

Light rain. High 91°, low 67°.

Pressure30.00 inHg
Wind9.3 mph E
Humidity51%
Visibility—
Dew point63°
Tue, 18101° / 68°0.1Light rain
101 °Light rain

Harrison, Tuesday, 18 August

Light rain. High 101°, low 68°.

Pressure29.91 inHg
Wind13.3 mph S
Humidity34%
Visibility—
Dew point58°
Wed, 1991° / 65°0.11Light rain
91 °Light rain

Harrison, Wednesday, 19 August

Light rain. High 91°, low 65°.

Pressure29.85 inHg
Wind20.9 mph NE
Humidity32%
Visibility—
Dew point53°
Thu, 2087° / 61°0Partly cloudy
87 °Partly cloudy

Harrison, Thursday, 20 August

Partly cloudy. High 87°, low 61°.

Pressure30.00 inHg
Wind7.8 mph E
Humidity38%
Visibility—
Dew point52°
Fri, 2196° / 68°0Clear
96 °Clear

Harrison, Friday, 21 August

Clear. High 96°, low 68°.

Pressure29.85 inHg
Wind16.3 mph SE
Humidity36%
Visibility—
Dew point58°
Sat, 2281° / 61°0Overcast
81 °Overcast

Harrison, Saturday, 22 August

Overcast. High 81°, low 61°.

Pressure30.09 inHg
Wind19.5 mph NE
Humidity64%
Visibility—
Dew point55°
Sun, 2383° / 54°0.01Light rain
83 °Light rain

Harrison, Sunday, 23 August

Light rain. High 83°, low 54°.

Pressure30.12 inHg
Wind11 mph E
Humidity29%
Visibility—
Dew point41°

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 Harrison, 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 Harrison, 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.