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As of 01:33 CDT

Weather in Port Jackson, IL

74°Current weather

Port Jackson, Sunday, 9 August, 01:33

Clear. Feels like 75°. High 91°, low 73°.

Pressure30.03 inHg
Wind6.2 mph SW
Humidity92%
Visibility6.2 mi
Dew point71°
Mon, 1095° / 76°0.01Light rain
95 °Light rain

Port Jackson, Monday, 10 August

Light rain. High 95°, low 76°.

Pressure29.97 inHg
Wind15.3 mph SW
Humidity62%
Visibility6.2 mi
Dew point74°
Tue, 1195° / 73°0Overcast
95 °Overcast

Port Jackson, Tuesday, 11 August

Overcast. High 95°, low 73°.

Pressure29.91 inHg
Wind9.7 mph SW
Humidity73%
Visibility6.2 mi
Dew point74°
Wed, 1288° / 73°0.09Light rain
88 °Light rain

Port Jackson, Wednesday, 12 August

Light rain. High 88°, low 73°.

Pressure29.80 inHg
Wind2.7 mph W
Humidity71%
Visibility6.2 mi
Dew point73°
Thu, 1385° / 69°0.29Light rain
85 °Light rain

Port Jackson, Thursday, 13 August

Light rain. High 85°, low 69°.

Pressure29.94 inHg
Wind11.4 mph NE
Humidity64%
Visibility—
Dew point69°
Fri, 1475° / 65°0.26Light rain
75 °Light rain

Port Jackson, Friday, 14 August

Light rain. High 75°, low 65°.

Pressure30.09 inHg
Wind13.8 mph NE
Humidity74%
Visibility—
Dew point65°
Sat, 1580° / 64°0.15Light rain
80 °Light rain

Port Jackson, Saturday, 15 August

Light rain. High 80°, low 64°.

Pressure30.18 inHg
Wind11.1 mph E
Humidity72%
Visibility—
Dew point66°
Sun, 1683° / 66°0Overcast
83 °Overcast

Port Jackson, Sunday, 16 August

Overcast. High 83°, low 66°.

Pressure30.06 inHg
Wind8.2 mph SE
Humidity75%
Visibility—
Dew point69°
Mon, 1784° / 70°0Partly cloudy
84 °Partly cloudy

Port Jackson, Monday, 17 August

Partly cloudy. High 84°, low 70°.

Pressure30.06 inHg
Wind8.5 mph N
Humidity64%
Visibility—
Dew point68°
Tue, 1882° / 65°0Overcast
82 °Overcast

Port Jackson, Tuesday, 18 August

Overcast. High 82°, low 65°.

Pressure30.00 inHg
Wind6.9 mph NE
Humidity72%
Visibility—
Dew point70°
Wed, 1987° / 70°0Overcast
87 °Overcast

Port Jackson, Wednesday, 19 August

Overcast. High 87°, low 70°.

Pressure29.91 inHg
Wind12.1 mph N
Humidity71%
Visibility—
Dew point72°
Thu, 2075° / 56°0Clear
75 °Clear

Port Jackson, Thursday, 20 August

Clear. High 75°, low 56°.

Pressure30.03 inHg
Wind12.9 mph NE
Humidity64%
Visibility—
Dew point58°
Fri, 2175° / 56°0.01Light rain
75 °Light rain

Port Jackson, Friday, 21 August

Light rain. High 75°, low 56°.

Pressure30.06 inHg
Wind8.4 mph NE
Humidity57%
Visibility—
Dew point55°
Sat, 2285° / 61°0.05Light rain
85 °Light rain

Port Jackson, Saturday, 22 August

Light rain. High 85°, low 61°.

Pressure29.88 inHg
Wind12.7 mph S
Humidity66%
Visibility—
Dew point66°
Sun, 2390° / 71°0.01Light rain
90 °Light rain

Port Jackson, Sunday, 23 August

Light rain. High 90°, low 71°.

Pressure29.94 inHg
Wind7.8 mph NW
Humidity64%
Visibility—
Dew point72°
Mon, 2488° / 70°0.02Light rain
88 °Light rain

Port Jackson, Monday, 24 August

Light rain. High 88°, low 70°.

Pressure30.00 inHg
Wind7.4 mph SW
Humidity63%
Visibility—
Dew point72°

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 Port Jackson, 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 Port Jackson, 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.