As of 00:16 EDT

Weather in London, IN

75°

London, Sunday, 9 August, 00:16

Clear. Feels like 77°. High 93°, low 71°.

Pressure30.03 inHg

Wind3.6 mph NW

Humidity91%

Visibility6.2 mi

Dew point72°

See detailed hourly forecast

Monthly outlook for London, IN: average high 80.8°, average low 64.8°. That is 1° below the climate normal for August. Precipitation is expected on 7 days (about 0.8 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 9 August (93.4°), the coolest 21 August (53.3°).

80.8°/64.8°

Average high / low

−1°

Below normal

7 / 5

Wet days / normal

0.8 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
9 August – 18 August	81.8°	82.5°	-0.4°
19 August – 28 August	79.3°	82.7°	-1.9°
29 August – 7 September	at normal	80.9°	—

August records over 66 years

99.1°17 August 1988All-time high

44.8°29 August 1986All-time low

Climate normals and records are computed from the nearest reference point — Franklin (12 mi).

Mon, 1091° / 76°

0.04

91 °

London, Monday, 10 August

Light rain. High 91°, low 76°.

Pressure30.00 inHg

Wind9.5 mph W

Humidity72%

Visibility6.2 mi

Dew point73°

Tue, 1189° / 71°

0.39

89 °

London, Tuesday, 11 August

Rain. High 89°, low 71°.

Pressure29.94 inHg

Wind14.6 mph S

Humidity96%

Visibility6.2 mi

Dew point72°

Wed, 1286° / 71°

0.04

86 °

London, Wednesday, 12 August

Light rain. High 86°, low 71°.

Pressure29.83 inHg

Wind6.8 mph N

Humidity82%

Visibility6.2 mi

Dew point74°

Thu, 1379° / 64°

0.04

79 °

London, Thursday, 13 August

Light rain. High 79°, low 64°.

Pressure30.00 inHg

Wind7.8 mph E

Humidity60%

Visibility—

Dew point62°

Fri, 1475° / 64°

0.04

75 °

London, Friday, 14 August

Light rain. High 75°, low 64°.

Pressure30.09 inHg

Wind7.4 mph NE

Humidity76%

Visibility—

Dew point63°

Sat, 1572° / 58°

0.04

72 °

London, Saturday, 15 August

Light rain. High 72°, low 58°.

Pressure30.27 inHg

Wind9.6 mph NE

Humidity68%

Visibility—

Dew point59°

Sun, 1677° / 63°

77 °

London, Sunday, 16 August

Overcast. High 77°, low 63°.

Pressure30.12 inHg

Wind8 mph SE

Humidity64%

Visibility—

Dew point62°

Mon, 1774° / 68°

0.09

74 °

London, Monday, 17 August

Light rain. High 74°, low 68°.

Pressure30.06 inHg

Wind5.6 mph E

Humidity96%

Visibility—

Dew point67°

Tue, 1881° / 64°

81 °

London, Tuesday, 18 August

Overcast. High 81°, low 64°.

Pressure30.00 inHg

Wind4.9 mph SE

Humidity68%

Visibility—

Dew point66°

Wed, 1983° / 66°

0.04

83 °

London, Wednesday, 19 August

Light rain. High 83°, low 66°.

Pressure29.88 inHg

Wind12.2 mph NW

Humidity67%

Visibility—

Dew point69°

Thu, 2072° / 57°

0.01

72 °

London, Thursday, 20 August

Light rain. High 72°, low 57°.

Pressure30.00 inHg

Wind13.4 mph N

Humidity67%

Visibility—

Dew point56°

Fri, 2171° / 53°

71 °

London, Friday, 21 August

Overcast. High 71°, low 53°.

Pressure30.09 inHg

Wind8.4 mph NE

Humidity53%

Visibility—

Dew point50°

Sat, 2278° / 56°

0.05

78 °

London, Saturday, 22 August

Light rain. High 78°, low 56°.

Pressure29.91 inHg

Wind13.2 mph S

Humidity67%

Visibility—

Dew point61°

Sun, 2388° / 68°

88 °

London, Sunday, 23 August

Clear. High 88°, low 68°.

Pressure29.94 inHg

Wind11.1 mph W

Humidity55%

Visibility—

Dew point66°

Mon, 2485° / 67°

85 °

London, Monday, 24 August

Overcast. High 85°, low 67°.

Pressure30.03 inHg

Wind6.1 mph N

Humidity58%

Visibility—

Dew point66°

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

Tue, 2583° / 65°

0.05

83 °

London, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high83°

Average low65°

Average precipitation0.05 in

Chance of precipitation25%

Record high93° (2023)

Record low53° (1984)

Wed, 2683° / 65°

0.08

83 °

London, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high83°

Average low65°

Average precipitation0.08 in

Chance of precipitation35%

Record high91° (1987)

Record low52° (2025)

Thu, 2783° / 66°

0.09

83 °

London, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high83°

Average low66°

Average precipitation0.09 in

Chance of precipitation33%

Record high93° (2024)

Record low50° (2025)

Fri, 2883° / 66°

0.15

83 °

London, Friday, 28 August

Climate normal for this date — 60-year average.

Average high83°

Average low66°

Average precipitation0.15 in

Chance of precipitation37%

Record high93° (2007)

Record low51° (1986)

Sat, 2982° / 65°

0.12

82 °

London, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high82°

Average low65°

Average precipitation0.12 in

Chance of precipitation32%

Record high95° (2007)

Record low45° (1986)

Sun, 3081° / 64°

0.16

81 °

London, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high81°

Average low64°

Average precipitation0.16 in

Chance of precipitation30%

Record high93° (2013)

Record low47° (1986)

Mon, 3181° / 64°

0.05

81 °

London, Monday, 31 August

Climate normal for this date — 60-year average.

Average high81°

Average low64°

Average precipitation0.05 in

Chance of precipitation30%

Record high96° (2013)

Record low51° (1986)

Tue, 0181° / 64°

0.1

81 °

London, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high81°

Average low64°

Average precipitation0.1 in

Chance of precipitation25%

Record high97° (2011)

Record low49° (1967)

Wed, 0281° / 64°

0.18

81 °

London, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high81°

Average low64°

Average precipitation0.18 in

Chance of precipitation30%

Record high98° (2011)

Record low49° (1967)

Thu, 0381° / 63°

0.09

81 °

London, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high81°

Average low63°

Average precipitation0.09 in

Chance of precipitation30%

Record high96° (2011)

Record low51° (1974)

Fri, 0480° / 63°

0.06

80 °

London, Friday, 4 September

Climate normal for this date — 60-year average.

Average high80°

Average low63°

Average precipitation0.06 in

Chance of precipitation25%

Record high95° (2007)

Record low49° (1997)

Sat, 0580° / 62°

0.07

80 °

London, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high80°

Average low62°

Average precipitation0.07 in

Chance of precipitation27%

Record high97° (2007)

Record low49° (1997)

Sun, 0680° / 62°

0.04

80 °

London, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high80°

Average low62°

Average precipitation0.04 in

Chance of precipitation20%

Record high93° (1998)

Record low49° (1984)

Mon, 0780° / 62°

0.05

80 °

London, Monday, 7 September

Climate normal for this date — 60-year average.

Average high80°

Average low62°

Average precipitation0.05 in

Chance of precipitation33%

Record high93° (2002)

Record low46° (1962)

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 London, IN 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 London, IN 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.