As of 15:26 EDT

Weather in London, TN

83°

London, Sunday, 9 August, 15:26

Overcast. Feels like 89°. High 84°, low 68°.

Pressure30.15 inHg

Wind0.5 mph NE

Humidity74%

Visibility6.2 mi

Dew point73°

See detailed hourly forecast

Monthly outlook for London, TN: average high 90.4°, average low 71.1°. That is 3.7° above the climate normal for August. Precipitation is expected on 11 days (about 2.8 inches), against a normal of 7 days and 1.9 inches. The warmest day looks like 18 August (95.6°), the coolest 9 August (67.8°).

90.4°/71.1°

Average high / low

+3.7°

Above normal

11 / 7

Wet days / normal

2.8 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
9 August – 18 August	90°	83.7°	+3.5°
19 August – 28 August	91°	83.7°	+4°
29 August – 7 September	at normal	82.3°	—

August records over 66 years

98.2°16 August 2007All-time high

51.3°29 August 1986All-time low

Climate normals and records are computed from the nearest reference point — Parrottsville (11 mi).

Mon, 1086° / 69°

86 °

London, Monday, 10 August

Mostly clear. High 86°, low 69°.

Pressure30.15 inHg

Wind7.9 mph NW

Humidity58%

Visibility6.2 mi

Dew point66°

Tue, 1190° / 70°

0.03

90 °

London, Tuesday, 11 August

Light rain. High 90°, low 70°.

Pressure30.09 inHg

Wind6.1 mph NW

Humidity56%

Visibility6.2 mi

Dew point67°

Wed, 1291° / 70°

0.09

91 °

London, Wednesday, 12 August

Light rain. High 91°, low 70°.

Pressure29.94 inHg

Wind10 mph W

Humidity51%

Visibility6.2 mi

Dew point66°

Thu, 1388° / 71°

0.77

88 °

London, Thursday, 13 August

Rain. High 88°, low 71°.

Pressure30.00 inHg

Wind5.9 mph W

Humidity55%

Visibility6.2 mi

Dew point68°

Fri, 1490° / 70°

0.15

90 °

London, Friday, 14 August

Light rain. High 90°, low 70°.

Pressure30.09 inHg

Wind10.3 mph NW

Humidity53%

Visibility—

Dew point68°

Sat, 1590° / 72°

0.35

90 °

London, Saturday, 15 August

Light rain. High 90°, low 72°.

Pressure30.18 inHg

Wind10.3 mph N

Humidity58%

Visibility—

Dew point71°

Sun, 1693° / 73°

93 °

London, Sunday, 16 August

Light rain. High 93°, low 73°.

Pressure30.09 inHg

Wind11.8 mph NW

Humidity42%

Visibility—

Dew point64°

Mon, 1794° / 75°

94 °

London, Monday, 17 August

Mostly clear. High 94°, low 75°.

Pressure30.03 inHg

Wind10 mph NW

Humidity40%

Visibility—

Dew point63°

Tue, 1896° / 75°

0.04

96 °

London, Tuesday, 18 August

Light rain. High 96°, low 75°.

Pressure30.06 inHg

Wind10 mph N

Humidity39%

Visibility—

Dew point64°

Wed, 1994° / 72°

0.33

94 °

London, Wednesday, 19 August

Rain. High 94°, low 72°.

Pressure30.06 inHg

Wind9.6 mph NW

Humidity43%

Visibility—

Dew point65°

Thu, 2093° / 71°

0.03

93 °

London, Thursday, 20 August

Light rain. High 93°, low 71°.

Pressure30.03 inHg

Wind10.6 mph NW

Humidity46%

Visibility—

Dew point66°

Fri, 2192° / 72°

0.09

92 °

London, Friday, 21 August

Light rain. High 92°, low 72°.

Pressure29.91 inHg

Wind11.1 mph NW

Humidity46%

Visibility—

Dew point66°

Sat, 2291° / 72°

0.34

91 °

London, Saturday, 22 August

Light rain. High 91°, low 72°.

Pressure29.91 inHg

Wind10.9 mph NW

Humidity47%

Visibility—

Dew point65°

Sun, 2388° / 70°

0.1

88 °

London, Sunday, 23 August

Light rain. High 88°, low 70°.

Pressure30.00 inHg

Wind9.7 mph N

Humidity49%

Visibility—

Dew point64°

Mon, 2488° / 70°

0.08

88 °

London, Monday, 24 August

Light rain. High 88°, low 70°.

Pressure30.09 inHg

Wind6.6 mph NW

Humidity55%

Visibility—

Dew point66°

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

Tue, 2584° / 65°

0.08

84 °

London, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high84°

Average low65°

Average precipitation0.08 in

Chance of precipitation35%

Record high95° (2023)

Record low59° (1997)

Wed, 2684° / 65°

0.1

84 °

London, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high84°

Average low65°

Average precipitation0.1 in

Chance of precipitation28%

Record high94° (2016)

Record low56° (2015)

Thu, 2784° / 66°

0.13

84 °

London, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high84°

Average low66°

Average precipitation0.13 in

Chance of precipitation37%

Record high93° (2016)

Record low54° (2025)

Fri, 2884° / 65°

0.08

84 °

London, Friday, 28 August

Climate normal for this date — 60-year average.

Average high84°

Average low65°

Average precipitation0.08 in

Chance of precipitation33%

Record high94° (1990)

Record low54° (1968)

Sat, 2984° / 65°

0.06

84 °

London, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high84°

Average low65°

Average precipitation0.06 in

Chance of precipitation37%

Record high93° (2024)

Record low51° (1986)

Sun, 3083° / 65°

0.07

83 °

London, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high83°

Average low65°

Average precipitation0.07 in

Chance of precipitation38%

Record high93° (2024)

Record low53° (1965)

Mon, 3183° / 65°

0.13

83 °

London, Monday, 31 August

Climate normal for this date — 60-year average.

Average high83°

Average low65°

Average precipitation0.13 in

Chance of precipitation43%

Record high91° (2016)

Record low55° (1976)

Tue, 0182° / 65°

0.14

82 °

London, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high82°

Average low65°

Average precipitation0.14 in

Chance of precipitation42%

Record high91° (1973)

Record low55° (1999)

Wed, 0282° / 65°

0.09

82 °

London, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high82°

Average low65°

Average precipitation0.09 in

Chance of precipitation38%

Record high93° (2011)

Record low52° (1967)

Thu, 0383° / 64°

0.11

83 °

London, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high83°

Average low64°

Average precipitation0.11 in

Chance of precipitation43%

Record high94° (2011)

Record low52° (1967)

Fri, 0482° / 64°

0.15

82 °

London, Friday, 4 September

Climate normal for this date — 60-year average.

Average high82°

Average low64°

Average precipitation0.15 in

Chance of precipitation43%

Record high94° (2019)

Record low53° (1997)

Sat, 0581° / 64°

0.14

81 °

London, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high81°

Average low64°

Average precipitation0.14 in

Chance of precipitation38%

Record high94° (1975)

Record low48° (1997)

Sun, 0681° / 64°

0.11

81 °

London, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high81°

Average low64°

Average precipitation0.11 in

Chance of precipitation35%

Record high91° (1990)

Record low52° (1984)

Mon, 0781° / 63°

0.09

81 °

London, Monday, 7 September

Climate normal for this date — 60-year average.

Average high81°

Average low63°

Average precipitation0.09 in

Chance of precipitation33%

Record high94° (1990)

Record low53° (2017)

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, TN 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, TN 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.