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As of 16:34 CDT

Weather in Island Lake, IL

76°Current weather

Island Lake, Sunday, 9 August, 16:34

Overcast. Feels like 77°. High 78°, low 62°.

Pressure29.88 inHg
Wind1 mph S
Humidity80%
Visibility6.2 mi
Dew point69°
Mon, 1088° / 72°0.28Rain
88 °Rain

Island Lake, Monday, 10 August

Rain. High 88°, low 72°.

Pressure29.88 inHg
Wind4.1 mph SE
Humidity73%
Visibility6.2 mi
Dew point72°
Tue, 1182° / 69°0.3Heavy rain
82 °Heavy rain

Island Lake, Tuesday, 11 August

Heavy rain. High 82°, low 69°.

Pressure29.83 inHg
Wind12.1 mph E
Humidity97%
Visibility6.2 mi
Dew point69°
Wed, 1282° / 63°0Overcast
82 °Overcast

Island Lake, Wednesday, 12 August

Overcast. High 82°, low 63°.

Pressure29.91 inHg
Wind4.2 mph N
Humidity69%
Visibility6.2 mi
Dew point68°
Thu, 1381° / 64°0Overcast
81 °Overcast

Island Lake, Thursday, 13 August

Overcast. High 81°, low 64°.

Pressure29.97 inHg
Wind6.6 mph SE
Humidity44%
Visibility6.2 mi
Dew point57°
Fri, 1476° / 66°0.12Light rain
76 °Light rain

Island Lake, Friday, 14 August

Light rain. High 76°, low 66°.

Pressure30.06 inHg
Wind11.1 mph E
Humidity91%
Visibility—
Dew point68°
Sat, 1588° / 69°0.48Rain
88 °Rain

Island Lake, Saturday, 15 August

Rain. High 88°, low 69°.

Pressure29.91 inHg
Wind11.2 mph E
Humidity76%
Visibility—
Dew point72°
Sun, 1675° / 66°0Overcast
75 °Overcast

Island Lake, Sunday, 16 August

Overcast. High 75°, low 66°.

Pressure29.97 inHg
Wind14.1 mph NW
Humidity74%
Visibility—
Dew point63°
Mon, 1773° / 61°0.24Light rain
73 °Light rain

Island Lake, Monday, 17 August

Light rain. High 73°, low 61°.

Pressure30.00 inHg
Wind10.4 mph E
Humidity87%
Visibility—
Dew point63°
Tue, 1884° / 69°0.06Light rain
84 °Light rain

Island Lake, Tuesday, 18 August

Light rain. High 84°, low 69°.

Pressure29.85 inHg
Wind13.4 mph W
Humidity64%
Visibility—
Dew point69°
Wed, 1982° / 65°0Overcast
82 °Overcast

Island Lake, Wednesday, 19 August

Overcast. High 82°, low 65°.

Pressure30.03 inHg
Wind7.1 mph NW
Humidity60%
Visibility—
Dew point65°
Thu, 2084° / 69°0.15Light rain
84 °Light rain

Island Lake, Thursday, 20 August

Light rain. High 84°, low 69°.

Pressure29.85 inHg
Wind8.9 mph SW
Humidity69%
Visibility—
Dew point70°
Fri, 2174° / 60°0.16Rain
74 °Rain

Island Lake, Friday, 21 August

Rain. High 74°, low 60°.

Pressure29.94 inHg
Wind12.8 mph N
Humidity77%
Visibility—
Dew point65°
Sat, 2278° / 58°0Clear
78 °Clear

Island Lake, Saturday, 22 August

Clear. High 78°, low 58°.

Pressure30.03 inHg
Wind6.9 mph NE
Humidity51%
Visibility—
Dew point55°
Sun, 2379° / 61°0Overcast
79 °Overcast

Island Lake, Sunday, 23 August

Overcast. High 79°, low 61°.

Pressure29.97 inHg
Wind8.5 mph SW
Humidity64%
Visibility—
Dew point63°
Mon, 2484° / 67°0.06Light rain
84 °Light rain

Island Lake, Monday, 24 August

Light rain. High 84°, low 67°.

Pressure30.00 inHg
Wind7.5 mph W
Humidity68%
Visibility—
Dew point68°

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 Island Lake, 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 Island Lake, 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.