As of 06:18 CDT

Weather in Essex, IL

65°

Essex, Sunday, 9 August, 06:18

Partly cloudy. Feels like 66°. High 87°, low 65°.

Pressure30.00 inHg

Wind4.8 mph S

Humidity96%

Visibility6.2 mi

Dew point64°

See detailed hourly forecast

Monthly outlook for Essex, IL: average high 83.5°, average low 67°. That is 1.4° above the climate normal for August. Precipitation is expected on 7 days (about 1.5 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 22 August (92.4°), the coolest 14 August (59.1°).

83.5°/67°

Average high / low

+1.4°

Above normal

7 / 5

Wet days / normal

1.5 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
9 August – 18 August	80.7°	81°	-0.2°
19 August – 28 August	88.3°	81.4°	+3.8°
29 August – 7 September	at normal	80°	—

August records over 66 years

97.5°17 August 1983All-time high

45°29 August 1986All-time low

Climate normals and records are computed from the nearest reference point — Cabery (13 mi).

Mon, 1091° / 73°

0.02

91 °

Essex, Monday, 10 August

Light rain. High 91°, low 73°.

Pressure29.88 inHg

Wind9.1 mph W

Humidity74%

Visibility6.2 mi

Dew point75°

Tue, 1185° / 71°

0.05

85 °

Essex, Tuesday, 11 August

Light rain. High 85°, low 71°.

Pressure29.85 inHg

Wind8.6 mph W

Humidity78%

Visibility6.2 mi

Dew point75°

Wed, 1282° / 69°

0.05

82 °

Essex, Wednesday, 12 August

Light rain. High 82°, low 69°.

Pressure29.85 inHg

Wind6.9 mph W

Humidity84%

Visibility6.2 mi

Dew point74°

Thu, 1376° / 62°

0.13

76 °

Essex, Thursday, 13 August

Light rain. High 76°, low 62°.

Pressure30.00 inHg

Wind9.6 mph NE

Humidity73%

Visibility—

Dew point65°

Fri, 1474° / 59°

0.3

74 °

Essex, Friday, 14 August

Rain. High 74°, low 59°.

Pressure30.15 inHg

Wind11.4 mph E

Humidity63%

Visibility—

Dew point57°

Sat, 1575° / 62°

75 °

Essex, Saturday, 15 August

Overcast. High 75°, low 62°.

Pressure30.21 inHg

Wind11.4 mph SE

Humidity64%

Visibility—

Dew point59°

Sun, 1678° / 61°

0.02

78 °

Essex, Sunday, 16 August

Light rain. High 78°, low 61°.

Pressure30.09 inHg

Wind7.2 mph SE

Humidity74%

Visibility—

Dew point65°

Mon, 1781° / 64°

0.01

81 °

Essex, Monday, 17 August

Light rain. High 81°, low 64°.

Pressure30.09 inHg

Wind6.8 mph E

Humidity70%

Visibility—

Dew point66°

Tue, 1878° / 63°

78 °

Essex, Tuesday, 18 August

Partly cloudy. High 78°, low 63°.

Pressure30.03 inHg

Wind6.9 mph SE

Humidity75%

Visibility—

Dew point68°

Wed, 1985° / 66°

0.06

85 °

Essex, Wednesday, 19 August

Light rain. High 85°, low 66°.

Pressure29.91 inHg

Wind14.7 mph S

Humidity74%

Visibility—

Dew point71°

Thu, 2090° / 74°

90 °

Essex, Thursday, 20 August

Overcast. High 90°, low 74°.

Pressure29.80 inHg

Wind9.8 mph SW

Humidity62%

Visibility—

Dew point72°

Fri, 2186° / 73°

86 °

Essex, Friday, 21 August

Mostly clear. High 86°, low 73°.

Pressure29.88 inHg

Wind12.9 mph NE

Humidity68%

Visibility—

Dew point73°

Sat, 2292° / 69°

92 °

Essex, Saturday, 22 August

Clear. High 92°, low 69°.

Pressure29.85 inHg

Wind11.3 mph S

Humidity71%

Visibility—

Dew point76°

Sun, 2392° / 73°

92 °

Essex, Sunday, 23 August

Overcast. High 92°, low 73°.

Pressure29.83 inHg

Wind10.7 mph NE

Humidity56%

Visibility—

Dew point71°

Mon, 2484° / 68°

0.84

84 °

Essex, Monday, 24 August

Heavy rain. High 84°, low 68°.

Pressure30.03 inHg

Wind12.2 mph E

Humidity72%

Visibility—

Dew point71°

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

Tue, 2582° / 64°

0.13

82 °

Essex, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high82°

Average low64°

Average precipitation0.13 in

Chance of precipitation32%

Record high94° (1991)

Record low52° (2017)

Wed, 2682° / 65°

0.15

82 °

Essex, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high82°

Average low65°

Average precipitation0.15 in

Chance of precipitation32%

Record high94° (2024)

Record low51° (1964)

Thu, 2782° / 66°

0.11

82 °

Essex, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high82°

Average low66°

Average precipitation0.11 in

Chance of precipitation23%

Record high96° (2024)

Record low53° (1968)

Fri, 2881° / 65°

0.15

81 °

Essex, Friday, 28 August

Climate normal for this date — 60-year average.

Average high81°

Average low65°

Average precipitation0.15 in

Chance of precipitation32%

Record high93° (1991)

Record low48° (1986)

Sat, 2981° / 64°

0.12

81 °

Essex, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high81°

Average low64°

Average precipitation0.12 in

Chance of precipitation38%

Record high93° (1984)

Record low45° (1986)

Sun, 3080° / 64°

0.06

80 °

Essex, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high80°

Average low64°

Average precipitation0.06 in

Chance of precipitation25%

Record high95° (1995)

Record low48° (1986)

Mon, 3180° / 63°

0.09

80 °

Essex, Monday, 31 August

Climate normal for this date — 60-year average.

Average high80°

Average low63°

Average precipitation0.09 in

Chance of precipitation27%

Record high94° (2011)

Record low49° (2009)

Tue, 0180° / 63°

0.11

80 °

Essex, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high80°

Average low63°

Average precipitation0.11 in

Chance of precipitation27%

Record high100° (2011)

Record low49° (2009)

Wed, 0280° / 63°

0.07

80 °

Essex, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high80°

Average low63°

Average precipitation0.07 in

Chance of precipitation23%

Record high98° (2011)

Record low47° (2017)

Thu, 0380° / 63°

0.07

80 °

Essex, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high80°

Average low63°

Average precipitation0.07 in

Chance of precipitation25%

Record high96° (2011)

Record low48° (1974)

Fri, 0479° / 62°

0.07

79 °

Essex, Friday, 4 September

Climate normal for this date — 60-year average.

Average high79°

Average low62°

Average precipitation0.07 in

Chance of precipitation23%

Record high94° (1960)

Record low45° (1974)

Sat, 0580° / 61°

0.06

80 °

Essex, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high80°

Average low61°

Average precipitation0.06 in

Chance of precipitation20%

Record high92° (1999)

Record low49° (1997)

Sun, 0679° / 62°

0.11

79 °

Essex, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high79°

Average low62°

Average precipitation0.11 in

Chance of precipitation33%

Record high94° (1960)

Record low45° (1962)

Mon, 0779° / 61°

0.09

79 °

Essex, Monday, 7 September

Climate normal for this date — 60-year average.

Average high79°

Average low61°

Average precipitation0.09 in

Chance of precipitation28%

Record high94° (1960)

Record low47° (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 Essex, 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 Essex, 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.