Monthly outlook for Hickory Grove, IL: average high 95.6°, average low 72°. That is 6.4° above the climate normal for August. Precipitation is expected on 7 days (about 1.2 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 20 August (114.8°), the coolest 14 August (63°).
95.6°/72°
Average high / low
+6.4°
Above normal
7 / 5
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
88.8°
84.2°
+2.5°
19 August – 28 August
107.1°
84.2°
+12.7°
29 August – 7 September
at normal
82°
—
August records over 66 years
101.5°15 August 2007All-time high
48.7°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — La Grange (13 mi).
Mon, 1096° / 77°0
96 °
Hickory Grove, Monday, 10 August
Overcast. High 96°, low 77°.
Pressure29.88 inHg
Wind10.2 mph W
Humidity43%
Visibility6.2 mi
Dew point66°
Tue, 11101° / 70°0.04
101 °
Hickory Grove, Tuesday, 11 August
Light rain. High 101°, low 70°.
Pressure29.80 inHg
Wind17.6 mph SW
Humidity38%
Visibility6.2 mi
Dew point66°
Wed, 1292° / 72°0.4
92 °
Hickory Grove, Wednesday, 12 August
Rain. High 92°, low 72°.
Pressure29.83 inHg
Wind3 mph NE
Humidity62%
Visibility6.2 mi
Dew point73°
Thu, 1384° / 69°0.18
84 °
Hickory Grove, Thursday, 13 August
Light rain. High 84°, low 69°.
Pressure29.94 inHg
Wind17.8 mph E
Humidity58%
Visibility—
Dew point66°
Fri, 1470° / 63°0.19
70 °
Hickory Grove, Friday, 14 August
Light rain. High 70°, low 63°.
Pressure30.09 inHg
Wind18.2 mph E
Humidity81%
Visibility—
Dew point63°
Sat, 1585° / 63°0.24
85 °
Hickory Grove, Saturday, 15 August
Light rain. High 85°, low 63°.
Pressure30.09 inHg
Wind14.9 mph SE
Humidity65%
Visibility—
Dew point65°
Sun, 1685° / 70°0
85 °
Hickory Grove, Sunday, 16 August
Overcast. High 85°, low 70°.
Pressure30.06 inHg
Wind10.1 mph N
Humidity63%
Visibility—
Dew point69°
Mon, 1788° / 68°0
88 °
Hickory Grove, Monday, 17 August
Partly cloudy. High 88°, low 68°.
Pressure30.06 inHg
Wind9.4 mph NE
Humidity49%
Visibility—
Dew point62°
Tue, 1893° / 68°0.01
93 °
Hickory Grove, Tuesday, 18 August
Light rain. High 93°, low 68°.
Pressure29.94 inHg
Wind12.3 mph SE
Humidity50%
Visibility—
Dew point65°
Wed, 19112° / 75°0
112 °
Hickory Grove, Wednesday, 19 August
Partly cloudy. High 112°, low 75°.
Pressure29.83 inHg
Wind14.4 mph W
Humidity25%
Visibility—
Dew point57°
Thu, 20115° / 81°0
115 °
Hickory Grove, Thursday, 20 August
Mostly clear. High 115°, low 81°.
Pressure29.77 inHg
Wind16 mph W
Humidity19%
Visibility—
Dew point54°
Fri, 21102° / 76°0
102 °
Hickory Grove, Friday, 21 August
Partly cloudy. High 102°, low 76°.
Pressure29.85 inHg
Wind15.7 mph NE
Humidity43%
Visibility—
Dew point69°
Sat, 22114° / 76°0.02
114 °
Hickory Grove, Saturday, 22 August
Light rain. High 114°, low 76°.
Pressure29.77 inHg
Wind15.7 mph SW
Humidity18%
Visibility—
Dew point53°
Sun, 23107° / 81°0.05
107 °
Hickory Grove, Sunday, 23 August
Light rain. High 107°, low 81°.
Pressure29.83 inHg
Wind13.9 mph SW
Humidity29%
Visibility—
Dew point60°
Mon, 2493° / 73°0.06
93 °
Hickory Grove, Monday, 24 August
Light rain. High 93°, low 73°.
Pressure29.97 inHg
Wind9 mph NE
Humidity43%
Visibility—
Dew point64°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2585° / 67°0.11
85 °
Hickory Grove, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high85°
Average low67°
Average precipitation0.11 in
Chance of precipitation28%
Record high98° (2003)
Record low55° (2015)
Wed, 2685° / 68°0.15
85 °
Hickory Grove, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.15 in
Chance of precipitation27%
Record high99° (2003)
Record low55° (2025)
Thu, 2784° / 69°0.06
84 °
Hickory Grove, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high84°
Average low69°
Average precipitation0.06 in
Chance of precipitation27%
Record high97° (1983)
Record low56° (2025)
Fri, 2884° / 67°0.09
84 °
Hickory Grove, Friday, 28 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.09 in
Chance of precipitation25%
Record high96° (2013)
Record low51° (1986)
Sat, 2984° / 67°0.07
84 °
Hickory Grove, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.07 in
Chance of precipitation25%
Record high95° (1984)
Record low49° (1986)
Sun, 3083° / 67°0.09
83 °
Hickory Grove, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.09 in
Chance of precipitation23%
Record high99° (2013)
Record low54° (2009)
Mon, 3182° / 66°0.12
82 °
Hickory Grove, Monday, 31 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.12 in
Chance of precipitation25%
Record high95° (2000)
Record low54° (1967)
Tue, 0182° / 66°0.13
82 °
Hickory Grove, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.13 in
Chance of precipitation28%
Record high98° (2011)
Record low48° (1967)
Wed, 0282° / 66°0.1
82 °
Hickory Grove, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.1 in
Chance of precipitation27%
Record high94° (2011)
Record low52° (1974)
Thu, 0382° / 65°0.09
82 °
Hickory Grove, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.09 in
Chance of precipitation22%
Record high94° (1960)
Record low49° (1974)
Fri, 0481° / 64°0.08
81 °
Hickory Grove, Friday, 4 September
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.08 in
Chance of precipitation18%
Record high95° (1960)
Record low44° (1974)
Sat, 0582° / 64°0.03
82 °
Hickory Grove, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.03 in
Chance of precipitation20%
Record high94° (1990)
Record low49° (1974)
Sun, 0681° / 65°0.07
81 °
Hickory Grove, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.07 in
Chance of precipitation20%
Record high95° (1990)
Record low49° (1974)
Mon, 0781° / 64°0.11
81 °
Hickory Grove, Monday, 7 September
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.11 in
Chance of precipitation22%
Record high94° (2013)
Record low49° (2025)
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 Hickory Grove, IL 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 Hickory Grove, IL 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.