EN
English Español

As of 21:41 CDT

Weather in Mount Vernon, SD

75°Current weather

Mount Vernon, Saturday, 8 August, 21:41

Clear. Feels like 76°. High 85°, low 56°.

Pressure29.80 inHg
Wind9.9 mph S
Humidity76%
Visibility6.2 mi
Dew point67°
Sun, 0989° / 65°0Clear
89 °Clear

Mount Vernon, Sunday, 9 August

Clear. High 89°, low 65°.

Pressure29.77 inHg
Wind13.8 mph N
Humidity44%
Visibility6.2 mi
Dew point65°
Mon, 10101° / 65°0.25Rain
101 °Rain

Mount Vernon, Monday, 10 August

Rain. High 101°, low 65°.

Pressure29.80 inHg
Wind9 mph E
Humidity41%
Visibility6.2 mi
Dew point63°
Tue, 1196° / 66°0.02Light rain
96 °Light rain

Mount Vernon, Tuesday, 11 August

Light rain. High 96°, low 66°.

Pressure29.83 inHg
Wind11 mph NE
Humidity45%
Visibility6.2 mi
Dew point63°
Wed, 1293° / 66°0.19Rain
93 °Rain

Mount Vernon, Wednesday, 12 August

Rain. High 93°, low 66°.

Pressure29.91 inHg
Wind7.5 mph E
Humidity45%
Visibility6.2 mi
Dew point61°
Thu, 1377° / 63°0.64Rain
77 °Rain

Mount Vernon, Thursday, 13 August

Rain. High 77°, low 63°.

Pressure30.03 inHg
Wind15.2 mph E
Humidity79%
Visibility—
Dew point59°
Fri, 1481° / 60°0Overcast
81 °Overcast

Mount Vernon, Friday, 14 August

Overcast. High 81°, low 60°.

Pressure30.09 inHg
Wind10.8 mph SE
Humidity45%
Visibility—
Dew point53°
Sat, 1579° / 63°0Overcast
79 °Overcast

Mount Vernon, Saturday, 15 August

Overcast. High 79°, low 63°.

Pressure30.12 inHg
Wind11.8 mph SE
Humidity60%
Visibility—
Dew point60°
Sun, 1686° / 63°0.03Light rain
86 °Light rain

Mount Vernon, Sunday, 16 August

Light rain. High 86°, low 63°.

Pressure30.06 inHg
Wind8.1 mph SE
Humidity57%
Visibility—
Dew point63°
Mon, 1794° / 66°0.01Light rain
94 °Light rain

Mount Vernon, Monday, 17 August

Light rain. High 94°, low 66°.

Pressure29.97 inHg
Wind14.6 mph W
Humidity49%
Visibility—
Dew point63°
Tue, 1897° / 66°0.01Light rain
97 °Light rain

Mount Vernon, Tuesday, 18 August

Light rain. High 97°, low 66°.

Pressure29.91 inHg
Wind14.9 mph W
Humidity30%
Visibility—
Dew point52°
Wed, 1983° / 62°0.03Light rain
83 °Light rain

Mount Vernon, Wednesday, 19 August

Light rain. High 83°, low 62°.

Pressure30.12 inHg
Wind15.9 mph NE
Humidity36%
Visibility—
Dew point46°
Thu, 2070° / 59°0.15Rain
70 °Rain

Mount Vernon, Thursday, 20 August

Rain. High 70°, low 59°.

Pressure30.15 inHg
Wind12.1 mph S
Humidity92%
Visibility—
Dew point58°
Fri, 2183° / 55°0.14Rain
83 °Rain

Mount Vernon, Friday, 21 August

Rain. High 83°, low 55°.

Pressure29.85 inHg
Wind20.6 mph S
Humidity38%
Visibility—
Dew point49°
Sat, 2291° / 62°0Clear
91 °Clear

Mount Vernon, Saturday, 22 August

Clear. High 91°, low 62°.

Pressure29.80 inHg
Wind15.3 mph NW
Humidity35%
Visibility—
Dew point53°
Sun, 2388° / 58°0Clear
88 °Clear

Mount Vernon, Sunday, 23 August

Clear. High 88°, low 58°.

Pressure29.94 inHg
Wind7.4 mph E
Humidity27%
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 Mount Vernon, 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 Mount Vernon, 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.