As of 18:02 CDT

Weather in Northlake, IL

83°Current weather

Northlake, Saturday, 8 August, 18:02

Clear. Feels like 85°. High 83°, low 69°.

Pressure30.00 inHg
Wind4 mph W
Humidity57%
Visibility6.2 mi
Dew point65°

Monthly outlook for Northlake, IL: average high 80.4°, average low 66.5°. That is 0.1° above the climate normal for August. Precipitation is expected on 6 days (about 2.2 inches), against a normal of 6 days and 1.9 inches. The warmest day looks like 12 August (86.3°), the coolest 23 August (58.6°).

80.4°/66.5°
Average high / low
+0.1°
Above normal
6 / 6
Wet days / normal
2.2 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
8 August – 17 August81.5°80.5°+0.6°
18 August – 27 August78.5°80.3°-1°
28 August – 6 Septemberat normal78.8°

August records over 66 years

99.3°24 August 2023All-time high
48°29 August 1965All-time low

Climate normals and records are computed from the nearest reference point — Stone Park (1 mi).

Sun, 0984° / 65°1.34Heavy rain
84 °Heavy rain

Northlake, Sunday, 9 August

Heavy rain. High 84°, low 65°.

Pressure29.85 inHg
Wind7.2 mph NE
Humidity96%
Visibility6.2 mi
Dew point66°
Mon, 1085° / 72°0.07Rain
85 °Rain

Northlake, Monday, 10 August

Rain. High 85°, low 72°.

Pressure29.88 inHg
Wind3.9 mph SE
Humidity68%
Visibility6.2 mi
Dew point68°
Tue, 1185° / 72°0.22Rain
85 °Rain

Northlake, Tuesday, 11 August

Rain. High 85°, low 72°.

Pressure29.80 inHg
Wind9 mph W
Humidity58%
Visibility6.2 mi
Dew point70°
Wed, 1286° / 69°0.02Light rain
86 °Light rain

Northlake, Wednesday, 12 August

Light rain. High 86°, low 69°.

Pressure29.85 inHg
Wind3.5 mph NE
Humidity61%
Visibility6.2 mi
Dew point64°
Thu, 1374° / 66°0.06Light rain
74 °Light rain

Northlake, Thursday, 13 August

Light rain. High 74°, low 66°.

Pressure29.94 inHg
Wind10.1 mph E
Humidity59%
Visibility
Dew point58°
Fri, 1476° / 62°0Clear
76 °Clear

Northlake, Friday, 14 August

Clear. High 76°, low 62°.

Pressure30.18 inHg
Wind9.2 mph NE
Humidity37%
Visibility
Dew point47°
Sat, 1579° / 61°0Overcast
79 °Overcast

Northlake, Saturday, 15 August

Overcast. High 79°, low 61°.

Pressure30.30 inHg
Wind5.4 mph SW
Humidity36%
Visibility
Dew point46°
Sun, 1681° / 62°0Partly cloudy
81 °Partly cloudy

Northlake, Sunday, 16 August

Partly cloudy. High 81°, low 62°.

Pressure30.18 inHg
Wind9.3 mph SW
Humidity41%
Visibility
Dew point51°
Mon, 1782° / 69°0.04Light rain
82 °Light rain

Northlake, Monday, 17 August

Light rain. High 82°, low 69°.

Pressure30.00 inHg
Wind4.9 mph S
Humidity79%
Visibility
Dew point66°
Tue, 1884° / 71°0.01Light rain
84 °Light rain

Northlake, Tuesday, 18 August

Light rain. High 84°, low 71°.

Pressure30.00 inHg
Wind8.6 mph NE
Humidity48%
Visibility
Dew point61°
Wed, 1986° / 69°0.39Rain
86 °Rain

Northlake, Wednesday, 19 August

Rain. High 86°, low 69°.

Pressure29.91 inHg
Wind8 mph SW
Humidity53%
Visibility
Dew point65°
Thu, 2077° / 70°0.01Light rain
77 °Light rain

Northlake, Thursday, 20 August

Light rain. High 77°, low 70°.

Pressure29.88 inHg
Wind7.7 mph NE
Humidity63%
Visibility
Dew point62°
Fri, 2181° / 66°0Partly cloudy
81 °Partly cloudy

Northlake, Friday, 21 August

Partly cloudy. High 81°, low 66°.

Pressure29.97 inHg
Wind8.6 mph NE
Humidity48%
Visibility
Dew point57°
Sat, 2275° / 62°0.01Light rain
75 °Light rain

Northlake, Saturday, 22 August

Light rain. High 75°, low 62°.

Pressure29.94 inHg
Wind12.5 mph NE
Humidity69%
Visibility
Dew point60°
Sun, 2368° / 59°0Clear
68 °Clear

Northlake, Sunday, 23 August

Clear. High 68°, low 59°.

Pressure30.24 inHg
Wind10.8 mph NE
Humidity40%
Visibility
Dew point41°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2480° / 65°0.13Climate normal
80 °Climate normal

Northlake, Monday, 24 August

Climate normal for this date — 60-year average.

Average high80°
Average low65°
Average precipitation0.13 in
Chance of precipitation27%
Record high99° (2023)
Record low54° (1965)
Tue, 2581° / 65°0.07Climate normal
81 °Climate normal

Northlake, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high81°
Average low65°
Average precipitation0.07 in
Chance of precipitation25%
Record high92° (2024)
Record low51° (2017)
Wed, 2681° / 66°0.15Climate normal
81 °Climate normal

Northlake, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high81°
Average low66°
Average precipitation0.15 in
Chance of precipitation32%
Record high96° (2024)
Record low53° (1964)
Thu, 2781° / 67°0.11Climate normal
81 °Climate normal

Northlake, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high81°
Average low67°
Average precipitation0.11 in
Chance of precipitation28%
Record high97° (2024)
Record low54° (2025)
Fri, 2880° / 66°0.13Climate normal
80 °Climate normal

Northlake, Friday, 28 August

Climate normal for this date — 60-year average.

Average high80°
Average low66°
Average precipitation0.13 in
Chance of precipitation37%
Record high93° (1984)
Record low50° (1986)
Sat, 2980° / 65°0.12Climate normal
80 °Climate normal

Northlake, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high80°
Average low65°
Average precipitation0.12 in
Chance of precipitation28%
Record high95° (1984)
Record low48° (1965)
Sun, 3079° / 64°0.13Climate normal
79 °Climate normal

Northlake, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high79°
Average low64°
Average precipitation0.13 in
Chance of precipitation28%
Record high94° (2013)
Record low53° (1986)
Mon, 3179° / 64°0.08Climate normal
79 °Climate normal

Northlake, Monday, 31 August

Climate normal for this date — 60-year average.

Average high79°
Average low64°
Average precipitation0.08 in
Chance of precipitation18%
Record high91° (2012)
Record low53° (2023)
Tue, 0179° / 64°0.12Climate normal
79 °Climate normal

Northlake, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high79°
Average low64°
Average precipitation0.12 in
Chance of precipitation32%
Record high94° (2011)
Record low51° (2009)
Wed, 0279° / 64°0.04Climate normal
79 °Climate normal

Northlake, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high79°
Average low64°
Average precipitation0.04 in
Chance of precipitation22%
Record high92° (2008)
Record low48° (2017)
Thu, 0379° / 64°0.09Climate normal
79 °Climate normal

Northlake, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high79°
Average low64°
Average precipitation0.09 in
Chance of precipitation28%
Record high94° (2023)
Record low51° (1974)
Fri, 0478° / 63°0.09Climate normal
78 °Climate normal

Northlake, Friday, 4 September

Climate normal for this date — 60-year average.

Average high78°
Average low63°
Average precipitation0.09 in
Chance of precipitation32%
Record high92° (2023)
Record low49° (2025)
Sat, 0578° / 62°0.08Climate normal
78 °Climate normal

Northlake, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high78°
Average low62°
Average precipitation0.08 in
Chance of precipitation23%
Record high90° (2023)
Record low52° (2010)
Sun, 0677° / 63°0.11Climate normal
77 °Climate normal

Northlake, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high77°
Average low63°
Average precipitation0.11 in
Chance of precipitation38%
Record high92° (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 Northlake, 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 Northlake, 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.