Monthly outlook for London Heights, IN: average high 82.8°, average low 64.7°. That is 0.1° above the climate normal for August. Precipitation is expected on 7 days (about 1.6 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 10 August (96.4°), the coolest 24 August (56.4°).
82.8°/64.7°
Average high / low
+0.1°
Above normal
7 / 5
Wet days / normal
1.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
84.6°
82.5°
+1.1°
19 August – 28 August
79.9°
82.7°
-1.6°
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, 1096° / 73°0.06
96 °
London Heights, Monday, 10 August
Rain. High 96°, low 73°.
Pressure30.00 inHg
Wind12.7 mph SW
Humidity67%
Visibility6.2 mi
Dew point72°
Tue, 1193° / 67°0.01
93 °
London Heights, Tuesday, 11 August
Light rain. High 93°, low 67°.
Pressure29.97 inHg
Wind9.2 mph S
Humidity83%
Visibility6.2 mi
Dew point73°
Wed, 1288° / 73°0.09
88 °
London Heights, Wednesday, 12 August
Light rain. High 88°, low 73°.
Pressure29.83 inHg
Wind12.4 mph W
Humidity73%
Visibility6.2 mi
Dew point73°
Thu, 1378° / 67°0.21
78 °
London Heights, Thursday, 13 August
Light rain. High 78°, low 67°.
Pressure29.94 inHg
Wind9.8 mph S
Humidity69%
Visibility—
Dew point65°
Fri, 1476° / 66°0.67
76 °
London Heights, Friday, 14 August
Rain. High 76°, low 66°.
Pressure30.09 inHg
Wind10.3 mph E
Humidity87%
Visibility—
Dew point66°
Sat, 1577° / 60°0.13
77 °
London Heights, Saturday, 15 August
Light rain. High 77°, low 60°.
Pressure30.24 inHg
Wind12 mph E
Humidity70%
Visibility—
Dew point61°
Sun, 1688° / 65°0
88 °
London Heights, Sunday, 16 August
Overcast. High 88°, low 65°.
Pressure29.94 inHg
Wind12.4 mph NW
Humidity61%
Visibility—
Dew point70°
Mon, 1776° / 66°0
76 °
London Heights, Monday, 17 August
Overcast. High 76°, low 66°.
Pressure30.06 inHg
Wind10.9 mph N
Humidity61%
Visibility—
Dew point60°
Tue, 1881° / 62°0
81 °
London Heights, Tuesday, 18 August
Overcast. High 81°, low 62°.
Pressure29.91 inHg
Wind7.7 mph SE
Humidity59%
Visibility—
Dew point61°
Wed, 1985° / 66°0.25
85 °
London Heights, Wednesday, 19 August
Rain. High 85°, low 66°.
Pressure29.77 inHg
Wind14.5 mph NW
Humidity64%
Visibility—
Dew point69°
Thu, 2075° / 58°0
75 °
London Heights, Thursday, 20 August
Overcast. High 75°, low 58°.
Pressure29.94 inHg
Wind9.9 mph NE
Humidity60%
Visibility—
Dew point57°
Fri, 2182° / 59°0
82 °
London Heights, Friday, 21 August
Partly cloudy. High 82°, low 59°.
Pressure29.91 inHg
Wind8.8 mph S
Humidity55%
Visibility—
Dew point59°
Sat, 2286° / 65°0.22
86 °
London Heights, Saturday, 22 August
Rain. High 86°, low 65°.
Pressure29.80 inHg
Wind15.3 mph S
Humidity63%
Visibility—
Dew point68°
Sun, 2375° / 61°0
75 °
London Heights, Sunday, 23 August
Clear. High 75°, low 61°.
Pressure30.12 inHg
Wind12.5 mph N
Humidity54%
Visibility—
Dew point55°
Mon, 2476° / 56°0
76 °
London Heights, Monday, 24 August
Clear. High 76°, low 56°.
Pressure30.21 inHg
Wind8.6 mph NE
Humidity50%
Visibility—
Dew point54°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2583° / 65°0.05
83 °
London Heights, 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 Heights, 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 Heights, 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 Heights, 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 Heights, 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 Heights, 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 Heights, 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 Heights, 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 Heights, 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 Heights, 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 Heights, 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 Heights, 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 Heights, 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 Heights, 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 Heights, 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 Heights, 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.