As of 06:37 CDT

Weather in Harvard Hills, IL

68°

Harvard Hills, Sunday, 9 August, 06:37

Overcast. Feels like 69°. High 91°, low 67°.

Pressure30.00 inHg

Wind2 mph SE

Humidity96%

Visibility6.2 mi

Dew point67°

See detailed hourly forecast

Monthly outlook for Harvard Hills, IL: average high 86°, average low 68.4°. That is 2.5° above the climate normal for August. Precipitation is expected on 7 days (about 3.0 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 22 August (99.1°), the coolest 14 August (58.7°).

86°/68.4°

Average high / low

+2.5°

Above normal

7 / 5

Wet days / normal

3.0 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
9 August – 18 August	82.5°	81.6°	+0.5°
19 August – 28 August	91.9°	81.7°	+5.7°
29 August – 7 September	at normal	80°	—

August records over 66 years

97.7°1 August 1988All-time high

47.1°29 August 1986All-time low

Climate normals and records are computed from the nearest reference point — Peoria (7 mi).

Mon, 1095° / 75°

95 °

Harvard Hills, Monday, 10 August

Overcast. High 95°, low 75°.

Pressure29.88 inHg

Wind10 mph W

Humidity61%

Visibility6.2 mi

Dew point71°

Tue, 1192° / 69°

0.06

92 °

Harvard Hills, Tuesday, 11 August

Light rain. High 92°, low 69°.

Pressure29.83 inHg

Wind10.4 mph W

Humidity59%

Visibility6.2 mi

Dew point73°

Wed, 1282° / 72°

0.99

82 °

Harvard Hills, Wednesday, 12 August

Heavy rain. High 82°, low 72°.

Pressure29.80 inHg

Wind3.4 mph E

Humidity92%

Visibility6.2 mi

Dew point72°

Thu, 1378° / 63°

0.09

78 °

Harvard Hills, Thursday, 13 August

Light rain. High 78°, low 63°.

Pressure29.97 inHg

Wind13.5 mph E

Humidity65%

Visibility—

Dew point64°

Fri, 1470° / 59°

1.44

70 °

Harvard Hills, Friday, 14 August

Heavy rain. High 70°, low 59°.

Pressure30.15 inHg

Wind11.2 mph E

Humidity80%

Visibility—

Dew point56°

Sat, 1575° / 60°

0.06

75 °

Harvard Hills, Saturday, 15 August

Light rain. High 75°, low 60°.

Pressure30.18 inHg

Wind12.9 mph SE

Humidity76%

Visibility—

Dew point62°

Sun, 1679° / 64°

0.02

79 °

Harvard Hills, Sunday, 16 August

Light rain. High 79°, low 64°.

Pressure30.06 inHg

Wind7.6 mph SE

Humidity76%

Visibility—

Dew point69°

Mon, 1782° / 66°

82 °

Harvard Hills, Monday, 17 August

Overcast. High 82°, low 66°.

Pressure30.09 inHg

Wind4.1 mph NE

Humidity66%

Visibility—

Dew point66°

Tue, 1882° / 66°

82 °

Harvard Hills, Tuesday, 18 August

Partly cloudy. High 82°, low 66°.

Pressure30.00 inHg

Wind10.1 mph SE

Humidity68%

Visibility—

Dew point67°

Wed, 1994° / 71°

94 °

Harvard Hills, Wednesday, 19 August

Overcast. High 94°, low 71°.

Pressure29.85 inHg

Wind14.8 mph S

Humidity64%

Visibility—

Dew point72°

Thu, 2095° / 76°

95 °

Harvard Hills, Thursday, 20 August

Overcast. High 95°, low 76°.

Pressure29.80 inHg

Wind9.9 mph S

Humidity55%

Visibility—

Dew point71°

Fri, 2188° / 74°

88 °

Harvard Hills, Friday, 21 August

Mostly clear. High 88°, low 74°.

Pressure29.88 inHg

Wind11.1 mph E

Humidity70%

Visibility—

Dew point74°

Sat, 2299° / 71°

0.09

99 °

Harvard Hills, Saturday, 22 August

Light rain. High 99°, low 71°.

Pressure29.83 inHg

Wind31.4 mph S

Humidity48%

Visibility—

Dew point69°

Sun, 2393° / 75°

0.02

93 °

Harvard Hills, Sunday, 23 August

Light rain. High 93°, low 75°.

Pressure29.83 inHg

Wind15.8 mph SW

Humidity51%

Visibility—

Dew point70°

Mon, 2482° / 68°

0.24

82 °

Harvard Hills, Monday, 24 August

Light rain. High 82°, low 68°.

Pressure30.00 inHg

Wind12.9 mph E

Humidity75%

Visibility—

Dew point71°

From day 17 onward the outlook is built from 60-year climate statistics

Tue, 2582° / 65°

0.1

82 °

Harvard Hills, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high82°

Average low65°

Average precipitation0.1 in

Chance of precipitation33%

Record high94° (2014)

Record low54° (1966)

Wed, 2682° / 66°

0.14

82 °

Harvard Hills, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high82°

Average low66°

Average precipitation0.14 in

Chance of precipitation35%

Record high92° (2003)

Record low53° (1964)

Thu, 2782° / 66°

0.09

82 °

Harvard Hills, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high82°

Average low66°

Average precipitation0.09 in

Chance of precipitation23%

Record high94° (2024)

Record low54° (1968)

Fri, 2882° / 65°

0.12

82 °

Harvard Hills, Friday, 28 August

Climate normal for this date — 60-year average.

Average high82°

Average low65°

Average precipitation0.12 in

Chance of precipitation27%

Record high93° (2013)

Record low49° (1986)

Sat, 2982° / 65°

0.11

82 °

Harvard Hills, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high82°

Average low65°

Average precipitation0.11 in

Chance of precipitation35%

Record high94° (1984)

Record low47° (1986)

Sun, 3081° / 65°

0.06

81 °

Harvard Hills, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high81°

Average low65°

Average precipitation0.06 in

Chance of precipitation28%

Record high96° (2013)

Record low52° (1986)

Mon, 3180° / 64°

0.08

80 °

Harvard Hills, Monday, 31 August

Climate normal for this date — 60-year average.

Average high80°

Average low64°

Average precipitation0.08 in

Chance of precipitation23%

Record high92° (2011)

Record low50° (2009)

Tue, 0180° / 64°

0.17

80 °

Harvard Hills, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high80°

Average low64°

Average precipitation0.17 in

Chance of precipitation28%

Record high98° (2011)

Record low48° (1967)

Wed, 0280° / 64°

0.06

80 °

Harvard Hills, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high80°

Average low64°

Average precipitation0.06 in

Chance of precipitation22%

Record high95° (2011)

Record low49° (1967)

Thu, 0380° / 64°

0.09

80 °

Harvard Hills, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high80°

Average low64°

Average precipitation0.09 in

Chance of precipitation28%

Record high92° (1964)

Record low47° (1974)

Fri, 0479° / 62°

0.11

79 °

Harvard Hills, Friday, 4 September

Climate normal for this date — 60-year average.

Average high79°

Average low62°

Average precipitation0.11 in

Chance of precipitation32%

Record high91° (2007)

Record low44° (1974)

Sat, 0579° / 62°

0.04

79 °

Harvard Hills, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high79°

Average low62°

Average precipitation0.04 in

Chance of precipitation17%

Record high92° (1990)

Record low50° (1974)

Sun, 0678° / 62°

0.1

78 °

Harvard Hills, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high78°

Average low62°

Average precipitation0.1 in

Chance of precipitation33%

Record high92° (2015)

Record low46° (1962)

Mon, 0779° / 62°

0.11

79 °

Harvard Hills, Monday, 7 September

Climate normal for this date — 60-year average.

Average high79°

Average low62°

Average precipitation0.11 in

Chance of precipitation28%

Record high92° (1960)

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 Harvard Hills, 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 Harvard Hills, 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.