Monthly outlook for Prairie View, IL: average high 78.5°, average low 64°. That is 0.3° above the climate normal for August. Precipitation is expected on 3 days (about 2.8 inches), against a normal of 6 days and 1.8 inches. The warmest day looks like 10 August (85.6°), the coolest 20 August (55.7°).
78.5°/64°
Average high / low
+0.3°
Above normal
3 / 6
Wet days / normal
2.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
80.5°
78.1°
+1.3°
18 August – 27 August
75.1°
77.8°
-1.5°
28 August – 6 September
at normal
76.4°
—
August records over 66 years
98.6°24 August 2023All-time high
52.5°22 August 2024All-time low
Climate normals and records are computed from the nearest reference point — Highwood (7 mi).
Sun, 0985° / 64°1.22
85 °
Prairie View, Sunday, 9 August
Heavy rain. High 85°, low 64°.
Pressure29.94 inHg
Wind10.1 mph SW
Humidity65%
Visibility6.2 mi
Dew point69°
Mon, 1086° / 70°0.93
86 °
Prairie View, Monday, 10 August
Heavy rain. High 86°, low 70°.
Pressure29.91 inHg
Wind3.3 mph SE
Humidity64%
Visibility6.2 mi
Dew point67°
Tue, 1185° / 70°0.61
85 °
Prairie View, Tuesday, 11 August
Heavy rain. High 85°, low 70°.
Pressure29.80 inHg
Wind3.8 mph SE
Humidity93%
Visibility6.2 mi
Dew point73°
Wed, 1282° / 67°0
82 °
Prairie View, Wednesday, 12 August
Overcast. High 82°, low 67°.
Pressure29.85 inHg
Wind4.9 mph NW
Humidity64%
Visibility6.2 mi
Dew point66°
Thu, 1371° / 64°0
71 °
Prairie View, Thursday, 13 August
Overcast. High 71°, low 64°.
Pressure30.03 inHg
Wind8.8 mph NE
Humidity55%
Visibility—
Dew point53°
Fri, 1478° / 60°0
78 °
Prairie View, Friday, 14 August
Clear. High 78°, low 60°.
Pressure30.12 inHg
Wind7.9 mph NE
Humidity44%
Visibility—
Dew point52°
Sat, 1577° / 65°0
77 °
Prairie View, Saturday, 15 August
Overcast. High 77°, low 65°.
Pressure30.27 inHg
Wind5.8 mph E
Humidity40%
Visibility—
Dew point49°
Sun, 1677° / 63°0
77 °
Prairie View, Sunday, 16 August
Overcast. High 77°, low 63°.
Pressure30.15 inHg
Wind5.2 mph E
Humidity53%
Visibility—
Dew point55°
Mon, 1782° / 65°0.01
82 °
Prairie View, Monday, 17 August
Light rain. High 82°, low 65°.
Pressure30.03 inHg
Wind4.5 mph W
Humidity55%
Visibility—
Dew point61°
Tue, 1884° / 68°0
84 °
Prairie View, Tuesday, 18 August
Overcast. High 84°, low 68°.
Pressure29.97 inHg
Wind11.2 mph SW
Humidity53%
Visibility—
Dew point62°
Wed, 1975° / 63°0.01
75 °
Prairie View, Wednesday, 19 August
Light rain. High 75°, low 63°.
Pressure29.91 inHg
Wind15.7 mph NW
Humidity62%
Visibility—
Dew point57°
Thu, 2068° / 56°0
68 °
Prairie View, Thursday, 20 August
Overcast. High 68°, low 56°.
Pressure30.06 inHg
Wind9.5 mph NW
Humidity52%
Visibility—
Dew point48°
Fri, 2174° / 56°0
74 °
Prairie View, Friday, 21 August
Clear. High 74°, low 56°.
Pressure30.09 inHg
Wind8.4 mph NE
Humidity46%
Visibility—
Dew point50°
Sat, 2268° / 61°0.02
68 °
Prairie View, Saturday, 22 August
Light rain. High 68°, low 61°.
Pressure29.91 inHg
Wind7.5 mph S
Humidity81%
Visibility—
Dew point57°
Sun, 2382° / 65°0
82 °
Prairie View, Sunday, 23 August
Mostly clear. High 82°, low 65°.
Pressure29.88 inHg
Wind13.4 mph W
Humidity39%
Visibility—
Dew point52°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2478° / 68°0.11
78 °
Prairie View, Monday, 24 August
Climate normal for this date — 60-year average.
Average high78°
Average low68°
Average precipitation0.11 in
Chance of precipitation25%
Record high99° (2023)
Record low58° (2025)
Tue, 2578° / 68°0.07
78 °
Prairie View, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high78°
Average low68°
Average precipitation0.07 in
Chance of precipitation25%
Record high91° (2024)
Record low54° (2017)
Wed, 2679° / 68°0.14
79 °
Prairie View, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high79°
Average low68°
Average precipitation0.14 in
Chance of precipitation35%
Record high94° (2024)
Record low54° (2025)
Thu, 2778° / 69°0.1
78 °
Prairie View, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high78°
Average low69°
Average precipitation0.1 in
Chance of precipitation32%
Record high96° (2024)
Record low55° (2025)
Fri, 2878° / 68°0.12
78 °
Prairie View, Friday, 28 August
Climate normal for this date — 60-year average.
Average high78°
Average low68°
Average precipitation0.12 in
Chance of precipitation35%
Record high92° (2021)
Record low54° (1986)
Sat, 2978° / 68°0.13
78 °
Prairie View, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high78°
Average low68°
Average precipitation0.13 in
Chance of precipitation28%
Record high89° (1984)
Record low54° (1965)
Sun, 3077° / 67°0.09
77 °
Prairie View, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high77°
Average low67°
Average precipitation0.09 in
Chance of precipitation27%
Record high91° (2013)
Record low57° (2023)
Mon, 3176° / 67°0.06
76 °
Prairie View, Monday, 31 August
Climate normal for this date — 60-year average.
Average high76°
Average low67°
Average precipitation0.06 in
Chance of precipitation20%
Record high89° (2012)
Record low56° (2025)
Tue, 0176° / 67°0.1
76 °
Prairie View, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high76°
Average low67°
Average precipitation0.1 in
Chance of precipitation28%
Record high89° (1960)
Record low57° (2017)
Wed, 0277° / 67°0.04
77 °
Prairie View, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high77°
Average low67°
Average precipitation0.04 in
Chance of precipitation25%
Record high87° (2023)
Record low50° (2017)
Thu, 0376° / 66°0.09
76 °
Prairie View, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high76°
Average low66°
Average precipitation0.09 in
Chance of precipitation27%
Record high92° (2023)
Record low54° (1974)
Fri, 0475° / 66°0.08
75 °
Prairie View, Friday, 4 September
Climate normal for this date — 60-year average.
Average high75°
Average low66°
Average precipitation0.08 in
Chance of precipitation30%
Record high91° (2023)
Record low49° (2025)
Sat, 0575° / 65°0.08
75 °
Prairie View, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high75°
Average low65°
Average precipitation0.08 in
Chance of precipitation25%
Record high89° (2023)
Record low55° (2017)
Sun, 0675° / 65°0.09
75 °
Prairie View, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high75°
Average low65°
Average precipitation0.09 in
Chance of precipitation33%
Record high90° (1990)
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 Prairie View, 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 Prairie View, 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.