As of 23:39 CDT

Weather in Erie, IL

67°

Erie, Saturday, 8 August, 23:39

Mostly clear. Feels like 68°. High 83°, low 67°.

Pressure30.00 inHg

Wind3.4 mph S

Humidity87%

Visibility6.2 mi

Dew point62°

See detailed hourly forecast

Monthly outlook for Erie, IL: average high 78.8°, average low 62.6°. That is 1.1° below the climate normal for August. Precipitation is expected on 5 days (about 0.6 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 9 August (89.1°), the coolest 20 August (52.6°).

78.8°/62.6°

Average high / low

−1.1°

Below normal

5 / 5

Wet days / normal

0.6 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
8 August – 17 August	79.9°	80.9°	-0.6°
18 August – 27 August	77°	81°	-2.2°
28 August – 6 September	at normal	79.5°	—

August records over 66 years

101.5°16 August 1988All-time high

46.8°29 August 1986All-time low

Climate normals and records are computed from the nearest reference point — Princeton (14 mi).

Sun, 0989° / 64°

89 °

Erie, Sunday, 9 August

Partly cloudy. High 89°, low 64°.

Pressure29.85 inHg

Wind11.1 mph S

Humidity78%

Visibility6.2 mi

Dew point75°

Mon, 1087° / 72°

0.01

87 °

Erie, Monday, 10 August

Light rain. High 87°, low 72°.

Pressure29.88 inHg

Wind5.9 mph S

Humidity75%

Visibility6.2 mi

Dew point74°

Tue, 1189° / 73°

0.01

89 °

Erie, Tuesday, 11 August

Light rain. High 89°, low 73°.

Pressure29.77 inHg

Wind10.1 mph SW

Humidity71%

Visibility6.2 mi

Dew point73°

Wed, 1280° / 68°

0.02

80 °

Erie, Wednesday, 12 August

Light rain. High 80°, low 68°.

Pressure29.88 inHg

Wind6.3 mph N

Humidity85%

Visibility6.2 mi

Dew point73°

Thu, 1374° / 61°

0.07

74 °

Erie, Thursday, 13 August

Light rain. High 74°, low 61°.

Pressure30.00 inHg

Wind7.4 mph E

Humidity80%

Visibility—

Dew point65°

Fri, 1477° / 59°

77 °

Erie, Friday, 14 August

Partly cloudy. High 77°, low 59°.

Pressure30.12 inHg

Wind7.5 mph E

Humidity61%

Visibility—

Dew point59°

Sat, 1564° / 60°

0.06

64 °

Erie, Saturday, 15 August

Light rain. High 64°, low 60°.

Pressure30.30 inHg

Wind8.1 mph SE

Humidity97%

Visibility—

Dew point60°

Sun, 1675° / 60°

75 °

Erie, Sunday, 16 August

Overcast. High 75°, low 60°.

Pressure30.15 inHg

Wind6.6 mph E

Humidity71%

Visibility—

Dew point60°

Mon, 1781° / 65°

0.02

81 °

Erie, Monday, 17 August

Light rain. High 81°, low 65°.

Pressure30.06 inHg

Wind6 mph SE

Humidity73%

Visibility—

Dew point66°

Tue, 1885° / 65°

85 °

Erie, Tuesday, 18 August

Overcast. High 85°, low 65°.

Pressure29.97 inHg

Wind12.3 mph SW

Humidity66%

Visibility—

Dew point67°

Wed, 1976° / 61°

0.13

76 °

Erie, Wednesday, 19 August

Light rain. High 76°, low 61°.

Pressure30.00 inHg

Wind13.7 mph NW

Humidity86%

Visibility—

Dew point60°

Thu, 2070° / 53°

0.1

70 °

Erie, Thursday, 20 August

Light rain. High 70°, low 53°.

Pressure30.09 inHg

Wind8.6 mph NE

Humidity55%

Visibility—

Dew point51°

Fri, 2173° / 53°

73 °

Erie, Friday, 21 August

Overcast. High 73°, low 53°.

Pressure30.06 inHg

Wind7 mph SE

Humidity61%

Visibility—

Dew point55°

Sat, 2277° / 56°

77 °

Erie, Saturday, 22 August

Overcast. High 77°, low 56°.

Pressure29.85 inHg

Wind10.6 mph S

Humidity76%

Visibility—

Dew point63°

Sun, 2382° / 65°

82 °

Erie, Sunday, 23 August

Clear. High 82°, low 65°.

Pressure29.94 inHg

Wind12.6 mph SW

Humidity44%

Visibility—

Dew point56°

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

Mon, 2481° / 64°

0.09

81 °

Erie, Monday, 24 August

Climate normal for this date — 60-year average.

Average high81°

Average low64°

Average precipitation0.09 in

Chance of precipitation25%

Record high98° (2023)

Record low53° (1966)

Tue, 2581° / 65°

0.12

81 °

Erie, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high81°

Average low65°

Average precipitation0.12 in

Chance of precipitation32%

Record high94° (2003)

Record low53° (2025)

Wed, 2681° / 65°

0.19

81 °

Erie, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high81°

Average low65°

Average precipitation0.19 in

Chance of precipitation30%

Record high94° (2003)

Record low51° (1964)

Thu, 2781° / 66°

0.12

81 °

Erie, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high81°

Average low66°

Average precipitation0.12 in

Chance of precipitation25%

Record high96° (2024)

Record low54° (1968)

Fri, 2881° / 65°

0.17

81 °

Erie, Friday, 28 August

Climate normal for this date — 60-year average.

Average high81°

Average low65°

Average precipitation0.17 in

Chance of precipitation35%

Record high94° (1984)

Record low47° (1986)

Sat, 2981° / 64°

0.09

81 °

Erie, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high81°

Average low64°

Average precipitation0.09 in

Chance of precipitation22%

Record high94° (1984)

Record low47° (1986)

Sun, 3080° / 64°

0.07

80 °

Erie, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high80°

Average low64°

Average precipitation0.07 in

Chance of precipitation22%

Record high96° (2013)

Record low53° (2009)

Mon, 3180° / 63°

0.09

80 °

Erie, Monday, 31 August

Climate normal for this date — 60-year average.

Average high80°

Average low63°

Average precipitation0.09 in

Chance of precipitation23%

Record high94° (2000)

Record low47° (2009)

Tue, 0180° / 63°

0.1

80 °

Erie, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high80°

Average low63°

Average precipitation0.1 in

Chance of precipitation30%

Record high95° (1984)

Record low47° (1967)

Wed, 0280° / 63°

0.06

80 °

Erie, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high80°

Average low63°

Average precipitation0.06 in

Chance of precipitation28%

Record high92° (2000)

Record low49° (1967)

Thu, 0379° / 63°

0.13

79 °

Erie, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high79°

Average low63°

Average precipitation0.13 in

Chance of precipitation33%

Record high93° (2023)

Record low49° (1974)

Fri, 0478° / 62°

0.1

78 °

Erie, Friday, 4 September

Climate normal for this date — 60-year average.

Average high78°

Average low62°

Average precipitation0.1 in

Chance of precipitation27%

Record high92° (2023)

Record low46° (1974)

Sat, 0578° / 61°

0.07

78 °

Erie, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high78°

Average low61°

Average precipitation0.07 in

Chance of precipitation22%

Record high92° (1990)

Record low49° (1974)

Sun, 0678° / 62°

0.12

78 °

Erie, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high78°

Average low62°

Average precipitation0.12 in

Chance of precipitation28%

Record high93° (1960)

Record low46° (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 Erie, 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 Erie, 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.