As of 13:43 CDT

Weather in Vermillion, SD

85°Current weather

Vermillion, Sunday, 9 August, 13:43

Clear. Feels like 88°. High 87°, low 70°.

Pressure29.77 inHg
Wind7 mph N
Humidity53%
Visibility6.2 mi
Dew point66°

Monthly outlook for Vermillion, SD: average high 88°, average low 67.1°. That is 2.9° above the climate normal for August. Precipitation is expected on 7 days (about 2.2 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 11 August (99.4°), the coolest 21 August (63.5°).

88°/67.1°
Average high / low
+2.9°
Above normal
7 / 5
Wet days / normal
2.2 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
9 August – 18 August86.2°82.7°+1.9°
19 August – 28 August91°82.8°+4.5°
29 August – 7 Septemberat normal81.1°

August records over 66 years

105.1°30 August 2012All-time high
46.9°28 August 1986All-time low

Climate normals and records are computed from the nearest reference point — Gayville (15 mi).

Mon, 1091° / 69°0Overcast
91 °Overcast

Vermillion, Monday, 10 August

Overcast. High 91°, low 69°.

Pressure29.80 inHg
Wind16.9 mph E
Humidity33%
Visibility6.2 mi
Dew point59°
Tue, 1199° / 68°0.01Light rain
99 °Light rain

Vermillion, Tuesday, 11 August

Light rain. High 99°, low 68°.

Pressure29.77 inHg
Wind13.7 mph NE
Humidity33%
Visibility6.2 mi
Dew point60°
Wed, 1298° / 67°0.33Heavy rain
98 °Heavy rain

Vermillion, Wednesday, 12 August

Heavy rain. High 98°, low 67°.

Pressure29.83 inHg
Wind13.7 mph E
Humidity42%
Visibility6.2 mi
Dew point61°
Thu, 1383° / 65°0.07Light rain
83 °Light rain

Vermillion, Thursday, 13 August

Light rain. High 83°, low 65°.

Pressure29.83 inHg
Wind14.2 mph E
Humidity56%
Visibility6.2 mi
Dew point67°
Fri, 1472° / 66°0.64Rain
72 °Rain

Vermillion, Friday, 14 August

Rain. High 72°, low 66°.

Pressure29.88 inHg
Wind15.2 mph E
Humidity95%
Visibility
Dew point67°
Sat, 1576° / 69°0.27Light rain
76 °Light rain

Vermillion, Saturday, 15 August

Light rain. High 76°, low 69°.

Pressure29.91 inHg
Wind9.6 mph NW
Humidity97%
Visibility
Dew point70°
Sun, 1681° / 64°0.05Light rain
81 °Light rain

Vermillion, Sunday, 16 August

Light rain. High 81°, low 64°.

Pressure30.06 inHg
Wind10 mph NE
Humidity61%
Visibility
Dew point63°
Mon, 1785° / 66°0.74Rain
85 °Rain

Vermillion, Monday, 17 August

Rain. High 85°, low 66°.

Pressure29.80 inHg
Wind10.1 mph S
Humidity71%
Visibility
Dew point68°
Tue, 1890° / 66°0Partly cloudy
90 °Partly cloudy

Vermillion, Tuesday, 18 August

Partly cloudy. High 90°, low 66°.

Pressure29.94 inHg
Wind8.8 mph NW
Humidity38%
Visibility
Dew point55°
Wed, 1987° / 69°0Light rain
87 °Light rain

Vermillion, Wednesday, 19 August

Light rain. High 87°, low 69°.

Pressure29.94 inHg
Wind12.3 mph S
Humidity54%
Visibility
Dew point63°
Thu, 2095° / 70°0Clear
95 °Clear

Vermillion, Thursday, 20 August

Clear. High 95°, low 70°.

Pressure29.80 inHg
Wind13.7 mph N
Humidity39%
Visibility
Dew point61°
Fri, 2189° / 64°0Overcast
89 °Overcast

Vermillion, Friday, 21 August

Overcast. High 89°, low 64°.

Pressure30.00 inHg
Wind9.4 mph NE
Humidity41%
Visibility
Dew point57°
Sat, 2297° / 65°0.01Light rain
97 °Light rain

Vermillion, Saturday, 22 August

Light rain. High 97°, low 65°.

Pressure29.88 inHg
Wind16 mph S
Humidity32%
Visibility
Dew point54°
Sun, 2396° / 69°0Mostly clear
96 °Mostly clear

Vermillion, Sunday, 23 August

Mostly clear. High 96°, low 69°.

Pressure29.94 inHg
Wind12 mph NE
Humidity34%
Visibility
Dew point57°
Mon, 2482° / 67°0.11Light rain
82 °Light rain

Vermillion, Monday, 24 August

Light rain. High 82°, low 67°.

Pressure30.09 inHg
Wind7.9 mph E
Humidity57%
Visibility
Dew point63°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2583° / 65°0.12Climate normal
83 °Climate normal

Vermillion, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high83°
Average low65°
Average precipitation0.12 in
Chance of precipitation27%
Record high98° (1991)
Record low49° (2025)
Wed, 2683° / 66°0.1Climate normal
83 °Climate normal

Vermillion, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high83°
Average low66°
Average precipitation0.1 in
Chance of precipitation30%
Record high99° (1973)
Record low54° (1985)
Thu, 2782° / 65°0.09Climate normal
82 °Climate normal

Vermillion, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high82°
Average low65°
Average precipitation0.09 in
Chance of precipitation30%
Record high98° (1990)
Record low51° (1986)
Fri, 2883° / 65°0.11Climate normal
83 °Climate normal

Vermillion, Friday, 28 August

Climate normal for this date — 60-year average.

Average high83°
Average low65°
Average precipitation0.11 in
Chance of precipitation27%
Record high101° (1984)
Record low47° (1986)
Sat, 2983° / 64°0.06Climate normal
83 °Climate normal

Vermillion, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high83°
Average low64°
Average precipitation0.06 in
Chance of precipitation20%
Record high102° (2012)
Record low53° (2018)
Sun, 3082° / 64°0.07Climate normal
82 °Climate normal

Vermillion, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high82°
Average low64°
Average precipitation0.07 in
Chance of precipitation25%
Record high105° (2012)
Record low51° (2009)
Mon, 3181° / 64°0.12Climate normal
81 °Climate normal

Vermillion, Monday, 31 August

Climate normal for this date — 60-year average.

Average high81°
Average low64°
Average precipitation0.12 in
Chance of precipitation28%
Record high93° (1990)
Record low49° (1965)
Tue, 0181° / 64°0.06Climate normal
81 °Climate normal

Vermillion, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high81°
Average low64°
Average precipitation0.06 in
Chance of precipitation20%
Record high96° (1970)
Record low47° (1965)
Wed, 0282° / 63°0.09Climate normal
82 °Climate normal

Vermillion, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high82°
Average low63°
Average precipitation0.09 in
Chance of precipitation30%
Record high100° (2023)
Record low50° (1972)
Thu, 0381° / 63°0.1Climate normal
81 °Climate normal

Vermillion, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high81°
Average low63°
Average precipitation0.1 in
Chance of precipitation25%
Record high99° (2023)
Record low42° (1974)
Fri, 0481° / 63°0.11Climate normal
81 °Climate normal

Vermillion, Friday, 4 September

Climate normal for this date — 60-year average.

Average high81°
Average low63°
Average precipitation0.11 in
Chance of precipitation23%
Record high98° (2023)
Record low48° (1962)
Sat, 0580° / 63°0.07Climate normal
80 °Climate normal

Vermillion, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high80°
Average low63°
Average precipitation0.07 in
Chance of precipitation25%
Record high96° (1990)
Record low45° (1962)
Sun, 0681° / 62°0.03Climate normal
81 °Climate normal

Vermillion, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high81°
Average low62°
Average precipitation0.03 in
Chance of precipitation12%
Record high100° (1970)
Record low44° (2025)
Mon, 0780° / 61°0.07Climate normal
80 °Climate normal

Vermillion, Monday, 7 September

Climate normal for this date — 60-year average.

Average high80°
Average low61°
Average precipitation0.07 in
Chance of precipitation22%
Record high95° (1978)
Record low44° (1986)

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 Vermillion, 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 Vermillion, 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.