As of 03:24 CDT

Weather in Mound City, SD

64°

Mound City, Sunday, 9 August, 03:24

Mostly clear. Feels like 64°. High 86°, low 58°.

Pressure29.74 inHg

Wind7.7 mph NE

Humidity89%

Visibility6.2 mi

Dew point60°

See detailed hourly forecast

Monthly outlook for Mound City, SD: average high 86.7°, average low 64.6°. That is 2.7° above the climate normal for August. Precipitation is expected on 7 days (about 1.8 inches), against a normal of 4 days and 1.1 inches. The warmest day looks like 19 August (103.4°), the coolest 10 August (58°).

86.7°/64.6°

Average high / low

+2.7°

Above normal

7 / 4

Wet days / normal

1.8 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
9 August – 18 August	87.6°	82°	+3.1°
19 August – 28 August	85.1°	81.5°	+2°
29 August – 7 September	at normal	79.3°	—

August records over 66 years

102.7°23 August 2003All-time high

43.9°12 August 1964All-time low

Mon, 1093° / 58°

0.33

93 °

Mound City, Monday, 10 August

Rain. High 93°, low 58°.

Pressure29.83 inHg

Wind7.2 mph SE

Humidity45%

Visibility6.2 mi

Dew point60°

Tue, 1188° / 63°

0.05

88 °

Mound City, Tuesday, 11 August

Light rain. High 88°, low 63°.

Pressure29.88 inHg

Wind11.1 mph NE

Humidity37%

Visibility6.2 mi

Dew point52°

Wed, 1291° / 64°

91 °

Mound City, Wednesday, 12 August

Mostly clear. High 91°, low 64°.

Pressure29.91 inHg

Wind7.5 mph E

Humidity25%

Visibility6.2 mi

Dew point45°

Thu, 1378° / 64°

78 °

Mound City, Thursday, 13 August

Overcast. High 78°, low 64°.

Pressure30.00 inHg

Wind13.5 mph E

Humidity37%

Visibility—

Dew point48°

Fri, 1474° / 59°

74 °

Mound City, Friday, 14 August

Overcast. High 74°, low 59°.

Pressure30.06 inHg

Wind16.7 mph S

Humidity51%

Visibility—

Dew point52°

Sat, 1582° / 64°

0.03

82 °

Mound City, Saturday, 15 August

Light rain. High 82°, low 64°.

Pressure30.06 inHg

Wind9.8 mph SE

Humidity67%

Visibility—

Dew point60°

Sun, 1689° / 62°

89 °

Mound City, Sunday, 16 August

Overcast. High 89°, low 62°.

Pressure30.12 inHg

Wind9.5 mph E

Humidity28%

Visibility—

Dew point45°

Mon, 1795° / 69°

0.06

95 °

Mound City, Monday, 17 August

Light rain. High 95°, low 69°.

Pressure29.85 inHg

Wind16.8 mph SE

Humidity47%

Visibility—

Dew point62°

Tue, 18101° / 72°

101 °

Mound City, Tuesday, 18 August

Overcast. High 101°, low 72°.

Pressure29.71 inHg

Wind9.3 mph NW

Humidity24%

Visibility—

Dew point52°

Wed, 19103° / 76°

103 °

Mound City, Wednesday, 19 August

Overcast. High 103°, low 76°.

Pressure29.74 inHg

Wind16.2 mph N

Humidity28%

Visibility—

Dew point56°

Thu, 2087° / 69°

0.01

87 °

Mound City, Thursday, 20 August

Light rain. High 87°, low 69°.

Pressure29.97 inHg

Wind11.4 mph N

Humidity36%

Visibility—

Dew point48°

Fri, 2189° / 67°

0.38

89 °

Mound City, Friday, 21 August

Rain. High 89°, low 67°.

Pressure29.85 inHg

Wind13.5 mph S

Humidity38%

Visibility—

Dew point54°

Sat, 2281° / 66°

0.51

81 °

Mound City, Saturday, 22 August

Rain. High 81°, low 66°.

Pressure29.74 inHg

Wind17.2 mph NE

Humidity58%

Visibility—

Dew point63°

Sun, 2370° / 61°

0.35

70 °

Mound City, Sunday, 23 August

Rain. High 70°, low 61°.

Pressure29.97 inHg

Wind11.1 mph E

Humidity81%

Visibility—

Dew point59°

Mon, 2480° / 62°

80 °

Mound City, Monday, 24 August

Overcast. High 80°, low 62°.

Pressure30.03 inHg

Wind11.1 mph SE

Humidity68%

Visibility—

Dew point61°

From day 17 onward the outlook is built from 60-year climate statistics

Tue, 2582° / 62°

0.02

82 °

Mound City, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high82°

Average low62°

Average precipitation0.02 in

Chance of precipitation12%

Record high98° (1991)

Record low47° (2025)

Wed, 2681° / 61°

0.06

81 °

Mound City, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high81°

Average low61°

Average precipitation0.06 in

Chance of precipitation23%

Record high100° (1970)

Record low48° (2014)

Thu, 2781° / 61°

0.11

81 °

Mound City, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high81°

Average low61°

Average precipitation0.11 in

Chance of precipitation33%

Record high101° (1991)

Record low49° (1992)

Fri, 2881° / 62°

0.08

81 °

Mound City, Friday, 28 August

Climate normal for this date — 60-year average.

Average high81°

Average low62°

Average precipitation0.08 in

Chance of precipitation27%

Record high99° (1991)

Record low47° (1965)

Sat, 2982° / 62°

0.05

82 °

Mound City, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high82°

Average low62°

Average precipitation0.05 in

Chance of precipitation17%

Record high99° (2012)

Record low49° (1988)

Sun, 3081° / 61°

0.04

81 °

Mound City, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high81°

Average low61°

Average precipitation0.04 in

Chance of precipitation22%

Record high98° (1990)

Record low49° (1963)

Mon, 3180° / 61°

0.02

80 °

Mound City, Monday, 31 August

Climate normal for this date — 60-year average.

Average high80°

Average low61°

Average precipitation0.02 in

Chance of precipitation17%

Record high92° (1975)

Record low46° (1992)

Tue, 0179° / 60°

0.06

79 °

Mound City, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high79°

Average low60°

Average precipitation0.06 in

Chance of precipitation25%

Record high97° (1983)

Record low43° (1965)

Wed, 0279° / 60°

0.1

79 °

Mound City, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high79°

Average low60°

Average precipitation0.1 in

Chance of precipitation25%

Record high98° (1983)

Record low44° (1974)

Thu, 0379° / 59°

0.06

79 °

Mound City, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high79°

Average low59°

Average precipitation0.06 in

Chance of precipitation17%

Record high97° (2015)

Record low43° (1974)

Fri, 0479° / 60°

0.06

79 °

Mound City, Friday, 4 September

Climate normal for this date — 60-year average.

Average high79°

Average low60°

Average precipitation0.06 in

Chance of precipitation17%

Record high95° (2005)

Record low42° (1962)

Sat, 0578° / 59°

0.07

78 °

Mound City, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high78°

Average low59°

Average precipitation0.07 in

Chance of precipitation15%

Record high98° (1978)

Record low38° (1965)

Sun, 0678° / 58°

0.04

78 °

Mound City, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high78°

Average low58°

Average precipitation0.04 in

Chance of precipitation15%

Record high100° (1976)

Record low43° (2025)

Mon, 0777° / 57°

0.09

77 °

Mound City, Monday, 7 September

Climate normal for this date — 60-year average.

Average high77°

Average low57°

Average precipitation0.09 in

Chance of precipitation25%

Record high97° (1980)

Record low40° (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 Mound City, 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 Mound City, 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.