Monthly outlook for Sugar Grove, IN: average high 93.1°, average low 73°. That is 4.8° above the climate normal for August. Precipitation is expected on 4 days (about 1.5 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 23 August (106.5°), the coolest 15 August (64.9°).
93.1°/73°
Average high / low
+4.8°
Above normal
4 / 5
Wet days / normal
1.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
88.4°
84.4°
+2.2°
19 August – 28 August
100.8°
84.7°
+9°
29 August – 7 September
at normal
83°
—
August records over 66 years
102°15 August 2007All-time high
50.9°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — New Middletown (8 mi).
Mon, 1095° / 77°0
95 °
Sugar Grove, Monday, 10 August
Clear. High 95°, low 77°.
Pressure30.03 inHg
Wind10 mph SW
Humidity52%
Visibility6.2 mi
Dew point69°
Tue, 1196° / 76°0
96 °
Sugar Grove, Tuesday, 11 August
Light rain. High 96°, low 76°.
Pressure29.97 inHg
Wind12.3 mph SW
Humidity54%
Visibility6.2 mi
Dew point70°
Wed, 1290° / 72°0.77
90 °
Sugar Grove, Wednesday, 12 August
Heavy rain. High 90°, low 72°.
Pressure29.83 inHg
Wind12 mph SW
Humidity53%
Visibility6.2 mi
Dew point70°
Thu, 1388° / 71°0.31
88 °
Sugar Grove, Thursday, 13 August
Rain. High 88°, low 71°.
Pressure29.94 inHg
Wind6.6 mph NE
Humidity53%
Visibility—
Dew point66°
Fri, 1477° / 67°0.26
77 °
Sugar Grove, Friday, 14 August
Light rain. High 77°, low 67°.
Pressure30.09 inHg
Wind9.2 mph NE
Humidity81%
Visibility—
Dew point65°
Sat, 1580° / 65°0.09
80 °
Sugar Grove, Saturday, 15 August
Light rain. High 80°, low 65°.
Pressure30.21 inHg
Wind9.4 mph E
Humidity69%
Visibility—
Dew point65°
Sun, 1688° / 66°0.02
88 °
Sugar Grove, Sunday, 16 August
Light rain. High 88°, low 66°.
Pressure30.06 inHg
Wind5.9 mph E
Humidity57%
Visibility—
Dew point67°
Mon, 1788° / 69°0
88 °
Sugar Grove, Monday, 17 August
Clear. High 88°, low 69°.
Pressure30.03 inHg
Wind7.1 mph N
Humidity52%
Visibility—
Dew point64°
Tue, 1888° / 68°0
88 °
Sugar Grove, Tuesday, 18 August
Clear. High 88°, low 68°.
Pressure30.00 inHg
Wind5.3 mph E
Humidity45%
Visibility—
Dew point61°
Wed, 1992° / 69°0
92 °
Sugar Grove, Wednesday, 19 August
Mostly clear. High 92°, low 69°.
Pressure30.03 inHg
Wind8.8 mph S
Humidity36%
Visibility—
Dew point58°
Thu, 2099° / 75°0
99 °
Sugar Grove, Thursday, 20 August
Overcast. High 99°, low 75°.
Pressure29.91 inHg
Wind9.8 mph SW
Humidity43%
Visibility—
Dew point68°
Fri, 21104° / 81°0
104 °
Sugar Grove, Friday, 21 August
Overcast. High 104°, low 81°.
Pressure29.85 inHg
Wind11.2 mph W
Humidity29%
Visibility—
Dew point62°
Sat, 22103° / 78°0
103 °
Sugar Grove, Saturday, 22 August
Overcast. High 103°, low 78°.
Pressure29.88 inHg
Wind4.7 mph NE
Humidity43%
Visibility—
Dew point71°
Sun, 23106° / 81°0
106 °
Sugar Grove, Sunday, 23 August
Clear. High 106°, low 81°.
Pressure29.88 inHg
Wind4 mph NW
Humidity31%
Visibility—
Dew point65°
Mon, 24101° / 80°0
101 °
Sugar Grove, Monday, 24 August
Overcast. High 101°, low 80°.
Pressure29.97 inHg
Wind3.8 mph NE
Humidity39%
Visibility—
Dew point68°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2585° / 67°0.06
85 °
Sugar Grove, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high85°
Average low67°
Average precipitation0.06 in
Chance of precipitation30%
Record high98° (2023)
Record low58° (2025)
Wed, 2685° / 68°0.08
85 °
Sugar Grove, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.08 in
Chance of precipitation32%
Record high96° (1983)
Record low54° (2025)
Thu, 2785° / 68°0.1
85 °
Sugar Grove, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.1 in
Chance of precipitation32%
Record high95° (2024)
Record low54° (2025)
Fri, 2885° / 68°0.1
85 °
Sugar Grove, Friday, 28 August
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.1 in
Chance of precipitation28%
Record high96° (2007)
Record low55° (1986)
Sat, 2984° / 68°0.11
84 °
Sugar Grove, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.11 in
Chance of precipitation38%
Record high97° (2024)
Record low51° (1986)
Sun, 3084° / 67°0.15
84 °
Sugar Grove, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.15 in
Chance of precipitation37%
Record high95° (2024)
Record low52° (1986)
Mon, 3183° / 67°0.12
83 °
Sugar Grove, Monday, 31 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.12 in
Chance of precipitation40%
Record high94° (2013)
Record low56° (2009)
Tue, 0183° / 67°0.13
83 °
Sugar Grove, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.13 in
Chance of precipitation35%
Record high97° (2011)
Record low53° (1967)
Wed, 0283° / 67°0.13
83 °
Sugar Grove, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.13 in
Chance of precipitation33%
Record high97° (2011)
Record low54° (1967)
Thu, 0383° / 66°0.09
83 °
Sugar Grove, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.09 in
Chance of precipitation33%
Record high99° (2011)
Record low54° (1974)
Fri, 0482° / 66°0.07
82 °
Sugar Grove, Friday, 4 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.07 in
Chance of precipitation23%
Record high96° (1999)
Record low53° (1974)
Sat, 0582° / 65°0.11
82 °
Sugar Grove, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.11 in
Chance of precipitation30%
Record high95° (1999)
Record low54° (1997)
Sun, 0682° / 65°0.02
82 °
Sugar Grove, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.02 in
Chance of precipitation15%
Record high96° (1998)
Record low53° (2017)
Mon, 0782° / 65°0.04
82 °
Sugar Grove, Monday, 7 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.04 in
Chance of precipitation17%
Record high97° (1990)
Record low50° (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 Sugar Grove, 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 Sugar Grove, 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.