Monthly outlook for Terre Haute, IA: average high 90.4°, average low 70.5°. That is 4.2° above the climate normal for August. Precipitation is expected on 7 days (about 1.6 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 19 August (111°), the coolest 15 August (62.8°).
90.4°/70.5°
Average high / low
+4.2°
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
84.5°
82.8°
+0.9°
19 August – 28 August
100.3°
82.8°
+9.7°
29 August – 7 September
at normal
80.6°
—
August records over 66 years
100.8°17 August 1983All-time high
45.1°28 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Leon (7 mi).
Mon, 1085° / 73°0.03
85 °
Terre Haute, Monday, 10 August
Light rain. High 85°, low 73°.
Pressure29.85 inHg
Wind4.3 mph SE
Humidity55%
Visibility6.2 mi
Dew point68°
Tue, 1199° / 73°0.07
99 °
Terre Haute, Tuesday, 11 August
Rain. High 99°, low 73°.
Pressure29.77 inHg
Wind11.4 mph SW
Humidity48%
Visibility6.2 mi
Dew point69°
Wed, 1287° / 69°0.02
87 °
Terre Haute, Wednesday, 12 August
Light rain. High 87°, low 69°.
Pressure29.85 inHg
Wind6 mph NE
Humidity67%
Visibility6.2 mi
Dew point69°
Thu, 1380° / 66°0.41
80 °
Terre Haute, Thursday, 13 August
Rain. High 80°, low 66°.
Pressure29.91 inHg
Wind17.8 mph NE
Humidity68%
Visibility—
Dew point67°
Fri, 1468° / 63°0.25
68 °
Terre Haute, Friday, 14 August
Light rain. High 68°, low 63°.
Pressure30.09 inHg
Wind17.2 mph E
Humidity96%
Visibility—
Dew point65°
Sat, 1576° / 63°0.17
76 °
Terre Haute, Saturday, 15 August
Light rain. High 76°, low 63°.
Pressure30.12 inHg
Wind10.2 mph E
Humidity92%
Visibility—
Dew point66°
Sun, 1682° / 66°0.01
82 °
Terre Haute, Sunday, 16 August
Light rain. High 82°, low 66°.
Pressure30.12 inHg
Wind9.9 mph N
Humidity68%
Visibility—
Dew point67°
Mon, 1781° / 68°0
81 °
Terre Haute, Monday, 17 August
Overcast. High 81°, low 68°.
Pressure30.09 inHg
Wind7.8 mph SE
Humidity75%
Visibility—
Dew point67°
Tue, 1893° / 67°0
93 °
Terre Haute, Tuesday, 18 August
Overcast. High 93°, low 67°.
Pressure29.88 inHg
Wind13.2 mph SE
Humidity61%
Visibility—
Dew point70°
Wed, 19111° / 75°0
111 °
Terre Haute, Wednesday, 19 August
Overcast. High 111°, low 75°.
Pressure29.77 inHg
Wind11.1 mph S
Humidity35%
Visibility—
Dew point64°
Thu, 20102° / 81°0
102 °
Terre Haute, Thursday, 20 August
Partly cloudy. High 102°, low 81°.
Pressure29.77 inHg
Wind15.3 mph NE
Humidity39%
Visibility—
Dew point65°
Fri, 2189° / 73°0
89 °
Terre Haute, Friday, 21 August
Overcast. High 89°, low 73°.
Pressure29.91 inHg
Wind13.4 mph NE
Humidity53%
Visibility—
Dew point65°
Sat, 22111° / 73°0.04
111 °
Terre Haute, Saturday, 22 August
Light rain. High 111°, low 73°.
Pressure29.74 inHg
Wind31.8 mph S
Humidity24%
Visibility—
Dew point58°
Sun, 2398° / 75°0.24
98 °
Terre Haute, Sunday, 23 August
Rain. High 98°, low 75°.
Pressure29.83 inHg
Wind13.6 mph SW
Humidity46%
Visibility—
Dew point66°
Mon, 2491° / 70°0.37
91 °
Terre Haute, Monday, 24 August
Rain. High 91°, low 70°.
Pressure29.91 inHg
Wind12.6 mph S
Humidity53%
Visibility—
Dew point67°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2584° / 65°0.18
84 °
Terre Haute, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high84°
Average low65°
Average precipitation0.18 in
Chance of precipitation33%
Record high100° (2003)
Record low51° (1966)
Wed, 2683° / 66°0.17
83 °
Terre Haute, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.17 in
Chance of precipitation30%
Record high98° (2003)
Record low52° (2015)
Thu, 2783° / 67°0.13
83 °
Terre Haute, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.13 in
Chance of precipitation33%
Record high96° (2013)
Record low53° (1967)
Fri, 2883° / 65°0.14
83 °
Terre Haute, Friday, 28 August
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.14 in
Chance of precipitation33%
Record high98° (1984)
Record low45° (1986)
Sat, 2983° / 65°0.07
83 °
Terre Haute, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.07 in
Chance of precipitation23%
Record high98° (1984)
Record low52° (1986)
Sun, 3081° / 65°0.11
81 °
Terre Haute, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.11 in
Chance of precipitation30%
Record high100° (2013)
Record low49° (2009)
Mon, 3181° / 64°0.11
81 °
Terre Haute, Monday, 31 August
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.11 in
Chance of precipitation28%
Record high93° (2000)
Record low49° (2009)
Tue, 0181° / 64°0.1
81 °
Terre Haute, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.1 in
Chance of precipitation30%
Record high95° (1984)
Record low47° (1967)
Wed, 0281° / 64°0.09
81 °
Terre Haute, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.09 in
Chance of precipitation30%
Record high92° (2000)
Record low51° (1974)
Thu, 0381° / 64°0.1
81 °
Terre Haute, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.1 in
Chance of precipitation25%
Record high92° (1999)
Record low43° (1974)
Fri, 0480° / 63°0.09
80 °
Terre Haute, Friday, 4 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.09 in
Chance of precipitation20%
Record high93° (2012)
Record low42° (1974)
Sat, 0580° / 62°0.09
80 °
Terre Haute, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.09 in
Chance of precipitation23%
Record high92° (2012)
Record low45° (1962)
Sun, 0680° / 63°0.09
80 °
Terre Haute, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.09 in
Chance of precipitation25%
Record high94° (1970)
Record low46° (1988)
Mon, 0779° / 62°0.17
79 °
Terre Haute, Monday, 7 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.17 in
Chance of precipitation30%
Record high97° (2013)
Record low47° (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 Terre Haute, IA 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, IA 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.