As of 09:56 CDT

Weather in Lebanon, SD

68°

Lebanon, Sunday, 9 August, 09:56

Partly cloudy. Feels like 67°. High 85°, low 62°.

Pressure29.88 inHg

Wind14.2 mph NE

Humidity64%

Visibility6.2 mi

Dew point55°

See detailed hourly forecast

Monthly outlook for Lebanon, SD: average high 87.8°, average low 64°. That is 3.4° above the climate normal for August. Precipitation is expected on 4 days (about 1.9 inches), against a normal of 4 days and 1.2 inches. The warmest day looks like 24 August (100.3°), the coolest 10 August (59.5°).

87.8°/64°

Average high / low

+3.4°

Above normal

4 / 4

Wet days / normal

1.9 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
9 August – 18 August	85.8°	81.7°	+2.3°
19 August – 28 August	91.2°	81.5°	+5.4°
29 August – 7 September	at normal	79.3°	—

August records over 66 years

104°15 August 1988All-time high

44.8°12 August 1964All-time low

Mon, 1092° / 59°

0.36

92 °

Lebanon, Monday, 10 August

Heavy rain. High 92°, low 59°.

Pressure29.85 inHg

Wind4.9 mph SW

Humidity47%

Visibility6.2 mi

Dew point61°

Tue, 1188° / 64°

0.15

88 °

Lebanon, Tuesday, 11 August

Rain. High 88°, low 64°.

Pressure29.85 inHg

Wind9.9 mph NE

Humidity52%

Visibility6.2 mi

Dew point60°

Wed, 1288° / 66°

0.02

88 °

Lebanon, Wednesday, 12 August

Light rain. High 88°, low 66°.

Pressure29.85 inHg

Wind8.8 mph E

Humidity41%

Visibility6.2 mi

Dew point58°

Thu, 1384° / 62°

0.11

84 °

Lebanon, Thursday, 13 August

Light rain. High 84°, low 62°.

Pressure29.94 inHg

Wind10.1 mph E

Humidity43%

Visibility—

Dew point53°

Fri, 1474° / 63°

0.03

74 °

Lebanon, Friday, 14 August

Light rain. High 74°, low 63°.

Pressure30.03 inHg

Wind15.7 mph SE

Humidity56%

Visibility—

Dew point56°

Sat, 1578° / 62°

0.04

78 °

Lebanon, Saturday, 15 August

Light rain. High 78°, low 62°.

Pressure30.06 inHg

Wind12.4 mph SE

Humidity65%

Visibility—

Dew point61°

Sun, 1687° / 61°

87 °

Lebanon, Sunday, 16 August

Overcast. High 87°, low 61°.

Pressure30.15 inHg

Wind8.9 mph SE

Humidity29%

Visibility—

Dew point45°

Mon, 1791° / 65°

1.15

91 °

Lebanon, Monday, 17 August

Heavy rain. High 91°, low 65°.

Pressure29.85 inHg

Wind13.7 mph S

Humidity48%

Visibility—

Dew point61°

Tue, 1890° / 66°

90 °

Lebanon, Tuesday, 18 August

Mostly clear. High 90°, low 66°.

Pressure29.80 inHg

Wind16.2 mph NW

Humidity33%

Visibility—

Dew point50°

Wed, 1981° / 60°

81 °

Lebanon, Wednesday, 19 August

Partly cloudy. High 81°, low 60°.

Pressure30.03 inHg

Wind11 mph N

Humidity41%

Visibility—

Dew point50°

Thu, 2095° / 65°

95 °

Lebanon, Thursday, 20 August

Mostly clear. High 95°, low 65°.

Pressure29.80 inHg

Wind13.5 mph S

Humidity32%

Visibility—

Dew point53°

Fri, 2192° / 70°

92 °

Lebanon, Friday, 21 August

Overcast. High 92°, low 70°.

Pressure29.74 inHg

Wind11.6 mph N

Humidity29%

Visibility—

Dew point51°

Sat, 2286° / 64°

86 °

Lebanon, Saturday, 22 August

Clear. High 86°, low 64°.

Pressure30.06 inHg

Wind10.6 mph N

Humidity30%

Visibility—

Dew point45°

Sun, 2393° / 64°

93 °

Lebanon, Sunday, 23 August

Clear. High 93°, low 64°.

Pressure30.03 inHg

Wind12.9 mph SE

Humidity27%

Visibility—

Dew point47°

Mon, 24100° / 69°

100 °

Lebanon, Monday, 24 August

Clear. High 100°, low 69°.

Pressure29.91 inHg

Wind8.3 mph S

Humidity21%

Visibility—

Dew point47°

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

Tue, 2582° / 63°

0.03

82 °

Lebanon, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high82°

Average low63°

Average precipitation0.03 in

Chance of precipitation17%

Record high96° (1991)

Record low48° (1964)

Wed, 2681° / 62°

0.05

81 °

Lebanon, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high81°

Average low62°

Average precipitation0.05 in

Chance of precipitation22%

Record high100° (1970)

Record low46° (1992)

Thu, 2781° / 61°

0.09

81 °

Lebanon, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high81°

Average low61°

Average precipitation0.09 in

Chance of precipitation27%

Record high100° (1973)

Record low47° (1992)

Fri, 2881° / 62°

0.09

81 °

Lebanon, Friday, 28 August

Climate normal for this date — 60-year average.

Average high81°

Average low62°

Average precipitation0.09 in

Chance of precipitation25%

Record high99° (1991)

Record low47° (1986)

Sat, 2982° / 62°

0.05

82 °

Lebanon, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high82°

Average low62°

Average precipitation0.05 in

Chance of precipitation22%

Record high99° (2012)

Record low46° (1988)

Sun, 3081° / 61°

0.06

81 °

Lebanon, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high81°

Average low61°

Average precipitation0.06 in

Chance of precipitation20%

Record high94° (1961)

Record low49° (1992)

Mon, 3180° / 62°

0.06

80 °

Lebanon, Monday, 31 August

Climate normal for this date — 60-year average.

Average high80°

Average low62°

Average precipitation0.06 in

Chance of precipitation18%

Record high94° (1979)

Record low47° (1987)

Tue, 0179° / 60°

0.07

79 °

Lebanon, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high79°

Average low60°

Average precipitation0.07 in

Chance of precipitation23%

Record high97° (1983)

Record low43° (1965)

Wed, 0279° / 60°

0.11

79 °

Lebanon, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high79°

Average low60°

Average precipitation0.11 in

Chance of precipitation22%

Record high100° (1983)

Record low46° (1974)

Thu, 0380° / 60°

0.06

80 °

Lebanon, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high80°

Average low60°

Average precipitation0.06 in

Chance of precipitation17%

Record high97° (2005)

Record low41° (1974)

Fri, 0479° / 60°

0.1

79 °

Lebanon, Friday, 4 September

Climate normal for this date — 60-year average.

Average high79°

Average low60°

Average precipitation0.1 in

Chance of precipitation23%

Record high97° (1979)

Record low43° (1962)

Sat, 0578° / 60°

0.04

78 °

Lebanon, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high78°

Average low60°

Average precipitation0.04 in

Chance of precipitation15%

Record high100° (1978)

Record low39° (1965)

Sun, 0679° / 58°

0.04

79 °

Lebanon, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high79°

Average low58°

Average precipitation0.04 in

Chance of precipitation13%

Record high101° (1976)

Record low42° (2025)

Mon, 0777° / 57°

0.09

77 °

Lebanon, Monday, 7 September

Climate normal for this date — 60-year average.

Average high77°

Average low57°

Average precipitation0.09 in

Chance of precipitation22%

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 Lebanon, 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 Lebanon, 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.