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As of 08:26 CDT

Weather in Cissna Park, IL

73°Current weather

Cissna Park, Sunday, 9 August, 08:26

Overcast. Feels like 74°. High 90°, low 66°.

Pressure30.03 inHg
Wind7.6 mph S
Humidity83%
Visibility6.2 mi
Dew point68°
Mon, 1094° / 76°0.06Light rain
94 °Light rain

Cissna Park, Monday, 10 August

Light rain. High 94°, low 76°.

Pressure29.91 inHg
Wind12.4 mph SW
Humidity68%
Visibility6.2 mi
Dew point74°
Tue, 1189° / 67°0.39Rain
89 °Rain

Cissna Park, Tuesday, 11 August

Rain. High 89°, low 67°.

Pressure29.88 inHg
Wind14.8 mph SW
Humidity70%
Visibility6.2 mi
Dew point74°
Wed, 1285° / 71°0.02Light rain
85 °Light rain

Cissna Park, Wednesday, 12 August

Light rain. High 85°, low 71°.

Pressure29.85 inHg
Wind5.3 mph N
Humidity72%
Visibility6.2 mi
Dew point72°
Thu, 1379° / 64°0.91Rain
79 °Rain

Cissna Park, Thursday, 13 August

Rain. High 79°, low 64°.

Pressure29.88 inHg
Wind12.9 mph E
Humidity74%
Visibility—
Dew point68°
Fri, 1475° / 64°0.13Light rain
75 °Light rain

Cissna Park, Friday, 14 August

Light rain. High 75°, low 64°.

Pressure30.09 inHg
Wind12.9 mph E
Humidity76%
Visibility—
Dew point65°
Sat, 1575° / 62°0.24Light rain
75 °Light rain

Cissna Park, Saturday, 15 August

Light rain. High 75°, low 62°.

Pressure30.21 inHg
Wind14.9 mph SE
Humidity80%
Visibility—
Dew point64°
Sun, 1681° / 69°0Overcast
81 °Overcast

Cissna Park, Sunday, 16 August

Overcast. High 81°, low 69°.

Pressure29.97 inHg
Wind12.9 mph SE
Humidity79%
Visibility—
Dew point73°
Mon, 1777° / 62°0Overcast
77 °Overcast

Cissna Park, Monday, 17 August

Overcast. High 77°, low 62°.

Pressure30.09 inHg
Wind8.8 mph N
Humidity62%
Visibility—
Dew point60°
Tue, 1878° / 58°0Overcast
78 °Overcast

Cissna Park, Tuesday, 18 August

Overcast. High 78°, low 58°.

Pressure29.91 inHg
Wind10 mph S
Humidity71%
Visibility—
Dew point63°
Wed, 1979° / 66°0.02Light rain
79 °Light rain

Cissna Park, Wednesday, 19 August

Light rain. High 79°, low 66°.

Pressure29.83 inHg
Wind14.2 mph NW
Humidity60%
Visibility—
Dew point63°
Thu, 2076° / 60°0.16Light rain
76 °Light rain

Cissna Park, Thursday, 20 August

Light rain. High 76°, low 60°.

Pressure29.94 inHg
Wind6.3 mph NW
Humidity70%
Visibility—
Dew point63°
Fri, 2180° / 61°0.04Light rain
80 °Light rain

Cissna Park, Friday, 21 August

Light rain. High 80°, low 61°.

Pressure29.85 inHg
Wind13.6 mph S
Humidity62%
Visibility—
Dew point63°
Sat, 2282° / 65°0.34Rain
82 °Rain

Cissna Park, Saturday, 22 August

Rain. High 82°, low 65°.

Pressure29.80 inHg
Wind12.4 mph NW
Humidity64%
Visibility—
Dew point67°
Sun, 2375° / 60°0Clear
75 °Clear

Cissna Park, Sunday, 23 August

Clear. High 75°, low 60°.

Pressure30.15 inHg
Wind9.1 mph N
Humidity53%
Visibility—
Dew point54°
Mon, 2478° / 58°0Clear
78 °Clear

Cissna Park, Monday, 24 August

Clear. High 78°, low 58°.

Pressure30.21 inHg
Wind6.6 mph S
Humidity56%
Visibility—
Dew point58°

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 Cissna Park, 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 Cissna Park, 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.