As of 06:20 CDT

Weather in Hilltop, IL

72°

Hilltop, Sunday, 9 August, 06:20

Partly cloudy. Feels like 74°. High 96°, low 72°.

Pressure30.00 inHg

Wind7.2 mph S

Humidity93%

Visibility6.2 mi

Dew point70°

See detailed hourly forecast

Monthly outlook for Hilltop, IL: average high 97.5°, average low 73.6°. That is 6.2° above the climate normal for August. Precipitation is expected on 6 days (about 0.8 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 20 August (115°), the coolest 15 August (65.6°).

97.5°/73.6°

Average high / low

+6.2°

Above normal

6 / 5

Wet days / normal

0.8 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
9 August – 18 August	91.8°	86.3°	+3°
19 August – 28 August	106.9°	86.5°	+11.4°
29 August – 7 September	at normal	84.1°	—

August records over 66 years

103.5°15 August 2007All-time high

49.8°29 August 1986All-time low

Climate normals and records are computed from the nearest reference point — St. Louis (11 mi).

Mon, 10100° / 71°

0.09

100 °

Hilltop, Monday, 10 August

Rain. High 100°, low 71°.

Pressure29.94 inHg

Wind12.2 mph SW

Humidity45%

Visibility6.2 mi

Dew point70°

Tue, 11101° / 71°

0.03

101 °

Hilltop, Tuesday, 11 August

Light rain. High 101°, low 71°.

Pressure29.88 inHg

Wind11.7 mph SW

Humidity41%

Visibility6.2 mi

Dew point68°

Wed, 1298° / 76°

0.04

98 °

Hilltop, Wednesday, 12 August

Light rain. High 98°, low 76°.

Pressure29.83 inHg

Wind9.7 mph W

Humidity49%

Visibility6.2 mi

Dew point70°

Thu, 1387° / 71°

0.26

87 °

Hilltop, Thursday, 13 August

Light rain. High 87°, low 71°.

Pressure29.91 inHg

Wind15.2 mph E

Humidity67%

Visibility—

Dew point72°

Fri, 1476° / 66°

0.15

76 °

Hilltop, Friday, 14 August

Light rain. High 76°, low 66°.

Pressure30.06 inHg

Wind13.7 mph E

Humidity81%

Visibility—

Dew point65°

Sat, 1589° / 66°

0.09

89 °

Hilltop, Saturday, 15 August

Light rain. High 89°, low 66°.

Pressure30.12 inHg

Wind11 mph SE

Humidity73%

Visibility—

Dew point69°

Sun, 1690° / 71°

90 °

Hilltop, Sunday, 16 August

Overcast. High 90°, low 71°.

Pressure30.03 inHg

Wind10 mph SE

Humidity61%

Visibility—

Dew point71°

Mon, 1787° / 72°

0.05

87 °

Hilltop, Monday, 17 August

Light rain. High 87°, low 72°.

Pressure30.06 inHg

Wind7.1 mph NE

Humidity60%

Visibility—

Dew point69°

Tue, 1893° / 68°

0.03

93 °

Hilltop, Tuesday, 18 August

Light rain. High 93°, low 68°.

Pressure29.97 inHg

Wind11.3 mph E

Humidity55%

Visibility—

Dew point68°

Wed, 19105° / 77°

105 °

Hilltop, Wednesday, 19 August

Partly cloudy. High 105°, low 77°.

Pressure29.88 inHg

Wind11.3 mph S

Humidity36%

Visibility—

Dew point66°

Thu, 20115° / 81°

115 °

Hilltop, Thursday, 20 August

Clear. High 115°, low 81°.

Pressure29.83 inHg

Wind13.2 mph SW

Humidity18%

Visibility—

Dew point54°

Fri, 21104° / 81°

104 °

Hilltop, Friday, 21 August

Clear. High 104°, low 81°.

Pressure29.85 inHg

Wind10.8 mph NW

Humidity23%

Visibility—

Dew point56°

Sat, 22110° / 79°

110 °

Hilltop, Saturday, 22 August

Mostly clear. High 110°, low 79°.

Pressure29.85 inHg

Wind9.1 mph S

Humidity36%

Visibility—

Dew point64°

Sun, 23109° / 79°

0.01

109 °

Hilltop, Sunday, 23 August

Light rain. High 109°, low 79°.

Pressure29.85 inHg

Wind7.5 mph W

Humidity26%

Visibility—

Dew point60°

Mon, 2499° / 76°

0.02

99 °

Hilltop, Monday, 24 August

Light rain. High 99°, low 76°.

Pressure29.97 inHg

Wind10.5 mph SW

Humidity46%

Visibility—

Dew point68°

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

Tue, 2587° / 69°

0.06

87 °

Hilltop, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high87°

Average low69°

Average precipitation0.06 in

Chance of precipitation25%

Record high100° (2023)

Record low56° (2015)

Wed, 2687° / 69°

0.13

87 °

Hilltop, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high87°

Average low69°

Average precipitation0.13 in

Chance of precipitation32%

Record high99° (1983)

Record low58° (2015)

Thu, 2787° / 69°

0.12

87 °

Hilltop, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high87°

Average low69°

Average precipitation0.12 in

Chance of precipitation28%

Record high98° (1983)

Record low56° (2015)

Fri, 2887° / 69°

0.08

87 °

Hilltop, Friday, 28 August

Climate normal for this date — 60-year average.

Average high87°

Average low69°

Average precipitation0.08 in

Chance of precipitation27%

Record high98° (1990)

Record low55° (1967)

Sat, 2985° / 68°

0.07

85 °

Hilltop, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high85°

Average low68°

Average precipitation0.07 in

Chance of precipitation27%

Record high98° (1984)

Record low50° (1986)

Sun, 3085° / 68°

0.11

85 °

Hilltop, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high85°

Average low68°

Average precipitation0.11 in

Chance of precipitation28%

Record high98° (2013)

Record low53° (1986)

Mon, 3185° / 68°

0.11

85 °

Hilltop, Monday, 31 August

Climate normal for this date — 60-year average.

Average high85°

Average low68°

Average precipitation0.11 in

Chance of precipitation32%

Record high102° (2013)

Record low56° (1967)

Tue, 0184° / 68°

0.11

84 °

Hilltop, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high84°

Average low68°

Average precipitation0.11 in

Chance of precipitation33%

Record high99° (2011)

Record low52° (1967)

Wed, 0284° / 67°

0.12

84 °

Hilltop, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high84°

Average low67°

Average precipitation0.12 in

Chance of precipitation33%

Record high98° (2011)

Record low54° (1974)

Thu, 0384° / 67°

0.1

84 °

Hilltop, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high84°

Average low67°

Average precipitation0.1 in

Chance of precipitation27%

Record high97° (2011)

Record low51° (1974)

Fri, 0483° / 66°

0.13

83 °

Hilltop, Friday, 4 September

Climate normal for this date — 60-year average.

Average high83°

Average low66°

Average precipitation0.13 in

Chance of precipitation27%

Record high98° (1960)

Record low52° (1974)

Sat, 0583° / 66°

0.05

83 °

Hilltop, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high83°

Average low66°

Average precipitation0.05 in

Chance of precipitation15%

Record high97° (1998)

Record low51° (1974)

Sun, 0683° / 65°

0.05

83 °

Hilltop, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high83°

Average low65°

Average precipitation0.05 in

Chance of precipitation22%

Record high98° (1990)

Record low52° (1988)

Mon, 0783° / 65°

0.1

83 °

Hilltop, Monday, 7 September

Climate normal for this date — 60-year average.

Average high83°

Average low65°

Average precipitation0.1 in

Chance of precipitation20%

Record high97° (1960)

Record low49° (1988)

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 Hilltop, 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 Hilltop, 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.