Monthly outlook for Sand Ridge, IL: average high 83.4°, average low 66.6°. That is 1.4° above the climate normal for August. Precipitation is expected on 7 days (about 1.3 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 22 August (92.3°), the coolest 14 August (59.1°).
83.4°/66.6°
Average high / low
+1.4°
Above normal
7 / 5
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
80.6°
80.9°
-0.2°
19 August – 28 August
88.2°
80.9°
+4°
29 August – 7 September
at normal
79.3°
—
August records over 66 years
97.9°24 August 2023All-time high
45.7°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Joliet (11 mi).
Mon, 1092° / 73°0.01
92 °
Sand Ridge, Monday, 10 August
Light rain. High 92°, low 73°.
Pressure29.88 inHg
Wind7.9 mph NW
Humidity75%
Visibility6.2 mi
Dew point75°
Tue, 1183° / 70°0.12
83 °
Sand Ridge, Tuesday, 11 August
Rain. High 83°, low 70°.
Pressure29.85 inHg
Wind3 mph SW
Humidity84%
Visibility6.2 mi
Dew point71°
Wed, 1283° / 68°0.04
83 °
Sand Ridge, Wednesday, 12 August
Light rain. High 83°, low 68°.
Pressure29.85 inHg
Wind4.3 mph W
Humidity84%
Visibility6.2 mi
Dew point73°
Thu, 1376° / 61°0.24
76 °
Sand Ridge, Thursday, 13 August
Rain. High 76°, low 61°.
Pressure30.00 inHg
Wind9.1 mph E
Humidity66%
Visibility—
Dew point62°
Fri, 1474° / 59°0.22
74 °
Sand Ridge, Friday, 14 August
Rain. High 74°, low 59°.
Pressure30.15 inHg
Wind10.2 mph E
Humidity61%
Visibility—
Dew point56°
Sat, 1575° / 61°0.04
75 °
Sand Ridge, Saturday, 15 August
Light rain. High 75°, low 61°.
Pressure30.24 inHg
Wind10.4 mph SE
Humidity64%
Visibility—
Dew point59°
Sun, 1677° / 61°0.04
77 °
Sand Ridge, Sunday, 16 August
Light rain. High 77°, low 61°.
Pressure30.09 inHg
Wind6.2 mph SE
Humidity75%
Visibility—
Dew point65°
Mon, 1781° / 65°0.02
81 °
Sand Ridge, Monday, 17 August
Light rain. High 81°, low 65°.
Pressure30.09 inHg
Wind7.4 mph E
Humidity70%
Visibility—
Dew point66°
Tue, 1879° / 63°0
79 °
Sand Ridge, Tuesday, 18 August
Partly cloudy. High 79°, low 63°.
Pressure30.03 inHg
Wind7 mph SE
Humidity80%
Visibility—
Dew point68°
Wed, 1986° / 66°0.07
86 °
Sand Ridge, Wednesday, 19 August
Light rain. High 86°, low 66°.
Pressure29.91 inHg
Wind15.7 mph S
Humidity74%
Visibility—
Dew point71°
Thu, 2089° / 74°0
89 °
Sand Ridge, Thursday, 20 August
Overcast. High 89°, low 74°.
Pressure29.77 inHg
Wind9.6 mph SW
Humidity60%
Visibility—
Dew point71°
Fri, 2187° / 71°0
87 °
Sand Ridge, Friday, 21 August
Mostly clear. High 87°, low 71°.
Pressure29.91 inHg
Wind13.3 mph NE
Humidity62%
Visibility—
Dew point70°
Sat, 2292° / 69°0
92 °
Sand Ridge, Saturday, 22 August
Clear. High 92°, low 69°.
Pressure29.85 inHg
Wind10.2 mph S
Humidity70%
Visibility—
Dew point75°
Sun, 2390° / 72°0
90 °
Sand Ridge, Sunday, 23 August
Overcast. High 90°, low 72°.
Pressure29.83 inHg
Wind8.7 mph NE
Humidity56%
Visibility—
Dew point71°
Mon, 2485° / 68°0.39
85 °
Sand Ridge, Monday, 24 August
Rain. High 85°, low 68°.
Pressure30.03 inHg
Wind13.7 mph E
Humidity70%
Visibility—
Dew point70°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2581° / 64°0.11
81 °
Sand Ridge, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.11 in
Chance of precipitation27%
Record high92° (1991)
Record low52° (2017)
Wed, 2682° / 66°0.17
82 °
Sand Ridge, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.17 in
Chance of precipitation35%
Record high95° (2024)
Record low51° (1964)
Thu, 2782° / 66°0.12
82 °
Sand Ridge, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.12 in
Chance of precipitation27%
Record high96° (2024)
Record low53° (2025)
Fri, 2881° / 65°0.11
81 °
Sand Ridge, Friday, 28 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.11 in
Chance of precipitation25%
Record high93° (1984)
Record low48° (1986)
Sat, 2981° / 64°0.12
81 °
Sand Ridge, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.12 in
Chance of precipitation33%
Record high94° (1984)
Record low46° (1986)
Sun, 3080° / 64°0.07
80 °
Sand Ridge, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.07 in
Chance of precipitation22%
Record high93° (2013)
Record low50° (1986)
Mon, 3180° / 63°0.07
80 °
Sand Ridge, Monday, 31 August
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.07 in
Chance of precipitation22%
Record high90° (2011)
Record low51° (2009)
Tue, 0180° / 63°0.11
80 °
Sand Ridge, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.11 in
Chance of precipitation30%
Record high96° (2011)
Record low49° (2009)
Wed, 0280° / 63°0.06
80 °
Sand Ridge, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.06 in
Chance of precipitation22%
Record high94° (2008)
Record low47° (2017)
Thu, 0380° / 63°0.08
80 °
Sand Ridge, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.08 in
Chance of precipitation25%
Record high93° (2023)
Record low49° (1974)
Fri, 0478° / 62°0.1
78 °
Sand Ridge, Friday, 4 September
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.1 in
Chance of precipitation28%
Record high92° (2023)
Record low47° (1974)
Sat, 0579° / 62°0.06
79 °
Sand Ridge, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.06 in
Chance of precipitation17%
Record high90° (1983)
Record low50° (1974)
Sun, 0678° / 62°0.12
78 °
Sand Ridge, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.12 in
Chance of precipitation37%
Record high92° (1990)
Record low48° (1988)
Mon, 0778° / 61°0.13
78 °
Sand Ridge, Monday, 7 September
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.13 in
Chance of precipitation35%
Record high93° (1960)
Record low47° (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 Sand Ridge, 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 Sand Ridge, 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.