Monthly outlook for White Heath, IL: average high 80.5°, average low 64.3°. That is 0.7° below the climate normal for August. Precipitation is expected on 8 days (about 1.4 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 9 August (93.8°), the coolest 21 August (53°).
80.5°/64.3°
Average high / low
−0.7°
Below normal
8 / 5
Wet days / normal
1.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
81.7°
81.6°
+0°
18 August – 27 August
78.6°
82°
-1.9°
28 August – 6 September
at normal
80.8°
—
August records over 66 years
99.1°17 August 1988All-time high
45.1°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Champaign (13 mi).
Sun, 0994° / 70°0
94 °
White Heath, Sunday, 9 August
Mostly clear. High 94°, low 70°.
Pressure29.97 inHg
Wind13 mph S
Humidity69%
Visibility6.2 mi
Dew point73°
Mon, 1090° / 75°0.09
90 °
White Heath, Monday, 10 August
Rain. High 90°, low 75°.
Pressure29.91 inHg
Wind13.1 mph SW
Humidity65%
Visibility6.2 mi
Dew point74°
Tue, 1189° / 73°0.04
89 °
White Heath, Tuesday, 11 August
Light rain. High 89°, low 73°.
Pressure29.83 inHg
Wind16.2 mph SW
Humidity66%
Visibility6.2 mi
Dew point72°
Wed, 1284° / 71°0.37
84 °
White Heath, Wednesday, 12 August
Rain. High 84°, low 71°.
Pressure29.85 inHg
Wind0.5 mph S
Humidity77%
Visibility6.2 mi
Dew point74°
Thu, 1380° / 66°0.35
80 °
White Heath, Thursday, 13 August
Rain. High 80°, low 66°.
Pressure29.97 inHg
Wind11.2 mph NE
Humidity67%
Visibility—
Dew point66°
Fri, 1477° / 62°0.04
77 °
White Heath, Friday, 14 August
Light rain. High 77°, low 62°.
Pressure30.09 inHg
Wind10.5 mph E
Humidity68%
Visibility—
Dew point63°
Sat, 1567° / 59°0.39
67 °
White Heath, Saturday, 15 August
Rain. High 67°, low 59°.
Pressure30.27 inHg
Wind11.7 mph E
Humidity95%
Visibility—
Dew point58°
Sun, 1672° / 61°0
72 °
White Heath, Sunday, 16 August
Light rain. High 72°, low 61°.
Pressure30.12 inHg
Wind7.7 mph E
Humidity83%
Visibility—
Dew point62°
Mon, 1778° / 63°0.07
78 °
White Heath, Monday, 17 August
Light rain. High 78°, low 63°.
Pressure30.06 inHg
Wind6.7 mph N
Humidity83%
Visibility—
Dew point67°
Tue, 1882° / 65°0
82 °
White Heath, Tuesday, 18 August
Overcast. High 82°, low 65°.
Pressure30.00 inHg
Wind5.4 mph SW
Humidity70%
Visibility—
Dew point67°
Wed, 1979° / 61°0
79 °
White Heath, Wednesday, 19 August
Light rain. High 79°, low 61°.
Pressure29.91 inHg
Wind11.3 mph N
Humidity83%
Visibility—
Dew point73°
Thu, 2072° / 54°0
72 °
White Heath, Thursday, 20 August
Partly cloudy. High 72°, low 54°.
Pressure30.03 inHg
Wind13.4 mph N
Humidity64%
Visibility—
Dew point56°
Fri, 2173° / 53°0
73 °
White Heath, Friday, 21 August
Overcast. High 73°, low 53°.
Pressure30.06 inHg
Wind8.5 mph E
Humidity59%
Visibility—
Dew point55°
Sat, 2278° / 59°0.04
78 °
White Heath, Saturday, 22 August
Light rain. High 78°, low 59°.
Pressure29.85 inHg
Wind14.1 mph S
Humidity69%
Visibility—
Dew point64°
Sun, 2388° / 67°0
88 °
White Heath, Sunday, 23 August
Clear. High 88°, low 67°.
Pressure29.94 inHg
Wind9.7 mph W
Humidity58%
Visibility—
Dew point66°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2482° / 65°0.09
82 °
White Heath, Monday, 24 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.09 in
Chance of precipitation28%
Record high96° (2023)
Record low53° (1966)
Tue, 2582° / 65°0.07
82 °
White Heath, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.07 in
Chance of precipitation25%
Record high92° (2020)
Record low55° (1977)
Wed, 2683° / 66°0.09
83 °
White Heath, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.09 in
Chance of precipitation32%
Record high92° (2024)
Record low53° (1964)
Thu, 2783° / 66°0.12
83 °
White Heath, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.12 in
Chance of precipitation32%
Record high94° (2024)
Record low52° (1968)
Fri, 2882° / 66°0.14
82 °
White Heath, Friday, 28 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.14 in
Chance of precipitation32%
Record high94° (2013)
Record low49° (1986)
Sat, 2982° / 65°0.11
82 °
White Heath, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.11 in
Chance of precipitation28%
Record high93° (1984)
Record low45° (1986)
Sun, 3081° / 65°0.07
81 °
White Heath, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.07 in
Chance of precipitation25%
Record high93° (1995)
Record low48° (1986)
Mon, 3181° / 64°0.08
81 °
White Heath, Monday, 31 August
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.08 in
Chance of precipitation22%
Record high97° (2013)
Record low51° (2009)
Tue, 0181° / 64°0.11
81 °
White Heath, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.11 in
Chance of precipitation22%
Record high99° (2011)
Record low49° (1967)
Wed, 0281° / 64°0.08
81 °
White Heath, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.08 in
Chance of precipitation27%
Record high99° (2011)
Record low49° (1965)
Thu, 0381° / 64°0.08
81 °
White Heath, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.08 in
Chance of precipitation28%
Record high96° (2011)
Record low48° (1974)
Fri, 0480° / 63°0.09
80 °
White Heath, Friday, 4 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.09 in
Chance of precipitation22%
Record high93° (1999)
Record low48° (1974)
Sat, 0580° / 62°0.04
80 °
White Heath, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.04 in
Chance of precipitation20%
Record high93° (1999)
Record low48° (1997)
Sun, 0680° / 63°0.07
80 °
White Heath, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.07 in
Chance of precipitation28%
Record high93° (1990)
Record low47° (1962)
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 White Heath, 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 White Heath, 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.