Monthly outlook for Terre Haute, OH: average high 81.5°, average low 64.7°. That is 0.5° above the climate normal for August. Precipitation is expected on 5 days (about 4.4 inches), against a normal of 6 days and 1.7 inches. The warmest day looks like 23 August (92.5°), the coolest 15 August (55.9°).
81.5°/64.7°
Average high / low
+0.5°
Above normal
5 / 6
Wet days / normal
4.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
78.6°
80.7°
-1.2°
19 August – 28 August
86.3°
80.7°
+3.2°
29 August – 7 September
at normal
79.2°
—
August records over 66 years
96.8°20 August 1983All-time high
44.2°29 August 1965All-time low
Climate normals and records are computed from the nearest reference point — Casstown (13 mi).
Mon, 1088° / 69°1.22
88 °
Terre Haute, Monday, 10 August
Heavy rain. High 88°, low 69°.
Pressure30.00 inHg
Wind16.8 mph SW
Humidity81%
Visibility6.2 mi
Dew point73°
Tue, 1186° / 67°1.54
86 °
Terre Haute, Tuesday, 11 August
Heavy rain. High 86°, low 67°.
Pressure29.94 inHg
Wind11.1 mph SW
Humidity87%
Visibility6.2 mi
Dew point74°
Wed, 1282° / 63°1.33
82 °
Terre Haute, Wednesday, 12 August
Heavy rain. High 82°, low 63°.
Pressure29.80 inHg
Wind5.3 mph NW
Humidity81%
Visibility6.2 mi
Dew point73°
Thu, 1374° / 62°0
74 °
Terre Haute, Thursday, 13 August
Overcast. High 74°, low 62°.
Pressure29.97 inHg
Wind9 mph N
Humidity68%
Visibility—
Dew point62°
Fri, 1472° / 59°0.15
72 °
Terre Haute, Friday, 14 August
Rain. High 72°, low 59°.
Pressure30.12 inHg
Wind7.6 mph NE
Humidity66%
Visibility—
Dew point56°
Sat, 1572° / 56°0
72 °
Terre Haute, Saturday, 15 August
Overcast. High 72°, low 56°.
Pressure30.27 inHg
Wind8.1 mph NE
Humidity64%
Visibility—
Dew point56°
Sun, 1671° / 57°0.04
71 °
Terre Haute, Sunday, 16 August
Light rain. High 71°, low 57°.
Pressure30.15 inHg
Wind8.9 mph SE
Humidity73%
Visibility—
Dew point58°
Mon, 1776° / 59°0.03
76 °
Terre Haute, Monday, 17 August
Light rain. High 76°, low 59°.
Pressure30.06 inHg
Wind7.4 mph N
Humidity76%
Visibility—
Dew point65°
Tue, 1879° / 61°0
79 °
Terre Haute, Tuesday, 18 August
Clear. High 79°, low 61°.
Pressure30.06 inHg
Wind4.3 mph NE
Humidity61%
Visibility—
Dew point62°
Wed, 1979° / 62°0
79 °
Terre Haute, Wednesday, 19 August
Partly cloudy. High 79°, low 62°.
Pressure30.03 inHg
Wind11.9 mph SE
Humidity65%
Visibility—
Dew point65°
Thu, 2087° / 66°0.04
87 °
Terre Haute, Thursday, 20 August
Light rain. High 87°, low 66°.
Pressure29.88 inHg
Wind14 mph SW
Humidity70%
Visibility—
Dew point70°
Fri, 2189° / 74°0
89 °
Terre Haute, Friday, 21 August
Mostly clear. High 89°, low 74°.
Pressure29.85 inHg
Wind7.8 mph SW
Humidity72%
Visibility—
Dew point75°
Sat, 2286° / 68°0
86 °
Terre Haute, Saturday, 22 August
Partly cloudy. High 86°, low 68°.
Pressure29.97 inHg
Wind8.7 mph E
Humidity61%
Visibility—
Dew point67°
Sun, 2392° / 74°0
92 °
Terre Haute, Sunday, 23 August
Partly cloudy. High 92°, low 74°.
Pressure29.88 inHg
Wind7.3 mph S
Humidity63%
Visibility—
Dew point74°
Mon, 2484° / 73°0
84 °
Terre Haute, Monday, 24 August
Overcast. High 84°, low 73°.
Pressure30.03 inHg
Wind12.5 mph N
Humidity78%
Visibility—
Dew point73°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2581° / 63°0.07
81 °
Terre Haute, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high81°
Average low63°
Average precipitation0.07 in
Chance of precipitation25%
Record high92° (1983)
Record low51° (1984)
Wed, 2681° / 64°0.08
81 °
Terre Haute, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.08 in
Chance of precipitation27%
Record high90° (1983)
Record low49° (2025)
Thu, 2781° / 65°0.07
81 °
Terre Haute, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.07 in
Chance of precipitation30%
Record high91° (2024)
Record low49° (2025)
Fri, 2881° / 65°0.17
81 °
Terre Haute, Friday, 28 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.17 in
Chance of precipitation38%
Record high89° (1990)
Record low51° (1968)
Sat, 2980° / 64°0.12
80 °
Terre Haute, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.12 in
Chance of precipitation37%
Record high92° (2010)
Record low44° (1965)
Sun, 3080° / 63°0.11
80 °
Terre Haute, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.11 in
Chance of precipitation32%
Record high93° (2024)
Record low49° (1986)
Mon, 3180° / 62°0.1
80 °
Terre Haute, Monday, 31 August
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.1 in
Chance of precipitation32%
Record high91° (2012)
Record low49° (2009)
Tue, 0179° / 62°0.09
79 °
Terre Haute, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.09 in
Chance of precipitation25%
Record high93° (2011)
Record low49° (1987)
Wed, 0280° / 63°0.08
80 °
Terre Haute, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.08 in
Chance of precipitation27%
Record high95° (2011)
Record low47° (1967)
Thu, 0379° / 62°0.11
79 °
Terre Haute, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.11 in
Chance of precipitation30%
Record high93° (2011)
Record low50° (1967)
Fri, 0479° / 62°0.07
79 °
Terre Haute, Friday, 4 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.07 in
Chance of precipitation22%
Record high90° (1999)
Record low47° (1997)
Sat, 0579° / 61°0.08
79 °
Terre Haute, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high79°
Average low61°
Average precipitation0.08 in
Chance of precipitation23%
Record high91° (2007)
Record low47° (1997)
Sun, 0679° / 61°0.03
79 °
Terre Haute, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high79°
Average low61°
Average precipitation0.03 in
Chance of precipitation18%
Record high92° (1998)
Record low45° (1984)
Mon, 0778° / 61°0.07
78 °
Terre Haute, Monday, 7 September
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.07 in
Chance of precipitation28%
Record high92° (2002)
Record low45° (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 Terre Haute, OH 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 Terre Haute, OH 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.