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As of 20:04 CDT

Weather in Passport, IL

81°Current weather

Passport, Saturday, 8 August, 20:04

Clear. Feels like 86°. High 90°, low 72°.

Pressure30.03 inHg
Wind3.1 mph NW
Humidity81%
Visibility6.2 mi
Dew point74°
Sun, 0993° / 74°0Overcast
93 °Overcast

Passport, Sunday, 9 August

Overcast. High 93°, low 74°.

Pressure30.03 inHg
Wind12 mph SW
Humidity61%
Visibility6.2 mi
Dew point72°
Mon, 1093° / 75°0Partly cloudy
93 °Partly cloudy

Passport, Monday, 10 August

Partly cloudy. High 93°, low 75°.

Pressure29.97 inHg
Wind13.1 mph SW
Humidity65%
Visibility6.2 mi
Dew point72°
Tue, 1196° / 78°0Overcast
96 °Overcast

Passport, Tuesday, 11 August

Overcast. High 96°, low 78°.

Pressure29.88 inHg
Wind13.7 mph SW
Humidity54%
Visibility6.2 mi
Dew point72°
Wed, 1288° / 68°0.13Light rain
88 °Light rain

Passport, Wednesday, 12 August

Light rain. High 88°, low 68°.

Pressure29.85 inHg
Wind8 mph W
Humidity58%
Visibility6.2 mi
Dew point70°
Thu, 1383° / 66°0.96Heavy rain
83 °Heavy rain

Passport, Thursday, 13 August

Heavy rain. High 83°, low 66°.

Pressure29.94 inHg
Wind15.8 mph E
Humidity70%
Visibility—
Dew point70°
Fri, 1474° / 67°0.77Heavy rain
74 °Heavy rain

Passport, Friday, 14 August

Heavy rain. High 74°, low 67°.

Pressure30.06 inHg
Wind10.2 mph E
Humidity96%
Visibility—
Dew point67°
Sat, 1573° / 65°0.11Light rain
73 °Light rain

Passport, Saturday, 15 August

Light rain. High 73°, low 65°.

Pressure30.24 inHg
Wind13.7 mph E
Humidity76%
Visibility—
Dew point64°
Sun, 1680° / 64°0.22Light rain
80 °Light rain

Passport, Sunday, 16 August

Light rain. High 80°, low 64°.

Pressure30.06 inHg
Wind8 mph SE
Humidity75%
Visibility—
Dew point69°
Mon, 1780° / 67°0.11Light rain
80 °Light rain

Passport, Monday, 17 August

Light rain. High 80°, low 67°.

Pressure30.03 inHg
Wind7.5 mph NE
Humidity91%
Visibility—
Dew point71°
Tue, 1881° / 67°0Overcast
81 °Overcast

Passport, Tuesday, 18 August

Overcast. High 81°, low 67°.

Pressure30.00 inHg
Wind6.8 mph E
Humidity74%
Visibility—
Dew point70°
Wed, 1986° / 70°0Overcast
86 °Overcast

Passport, Wednesday, 19 August

Overcast. High 86°, low 70°.

Pressure29.91 inHg
Wind12.8 mph N
Humidity64%
Visibility—
Dew point70°
Thu, 2075° / 56°0Clear
75 °Clear

Passport, Thursday, 20 August

Clear. High 75°, low 56°.

Pressure30.03 inHg
Wind10.8 mph NE
Humidity62%
Visibility—
Dew point58°
Fri, 2175° / 56°0.01Light rain
75 °Light rain

Passport, Friday, 21 August

Light rain. High 75°, low 56°.

Pressure30.06 inHg
Wind8.9 mph E
Humidity55%
Visibility—
Dew point54°
Sat, 2287° / 61°0.09Light rain
87 °Light rain

Passport, Saturday, 22 August

Light rain. High 87°, low 61°.

Pressure29.85 inHg
Wind13.6 mph S
Humidity65%
Visibility—
Dew point66°
Sun, 2390° / 70°0.01Light rain
90 °Light rain

Passport, Sunday, 23 August

Light rain. High 90°, low 70°.

Pressure29.94 inHg
Wind7 mph NW
Humidity60%
Visibility—
Dew point71°

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 Passport, 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 Passport, 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.