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As of 20:06 CDT

Weather in Grand Tower, IL

82°Current weather

Grand Tower, Saturday, 8 August, 20:06

Clear. Feels like 89°. High 90°, low 72°.

Pressure30.03 inHg
Wind5.6 mph S
Humidity81%
Visibility6.2 mi
Dew point75°
Sun, 0993° / 72°0Clear
93 °Clear

Grand Tower, Sunday, 9 August

Clear. High 93°, low 72°.

Pressure30.03 inHg
Wind12.7 mph SW
Humidity56%
Visibility6.2 mi
Dew point71°
Mon, 1095° / 74°0Overcast
95 °Overcast

Grand Tower, Monday, 10 August

Overcast. High 95°, low 74°.

Pressure30.00 inHg
Wind14 mph SW
Humidity52%
Visibility6.2 mi
Dew point70°
Tue, 11100° / 75°0Clear
100 °Clear

Grand Tower, Tuesday, 11 August

Clear. High 100°, low 75°.

Pressure29.91 inHg
Wind15.2 mph SW
Humidity42%
Visibility6.2 mi
Dew point69°
Wed, 1292° / 76°0.09Light rain
92 °Light rain

Grand Tower, Wednesday, 12 August

Light rain. High 92°, low 76°.

Pressure29.88 inHg
Wind5.1 mph S
Humidity73%
Visibility6.2 mi
Dew point72°
Thu, 1386° / 72°1.52Heavy rain
86 °Heavy rain

Grand Tower, Thursday, 13 August

Heavy rain. High 86°, low 72°.

Pressure29.91 inHg
Wind12.2 mph E
Humidity79%
Visibility—
Dew point72°
Fri, 1486° / 71°0.3Rain
86 °Rain

Grand Tower, Friday, 14 August

Rain. High 86°, low 71°.

Pressure29.97 inHg
Wind13 mph NE
Humidity66%
Visibility—
Dew point72°
Sat, 1582° / 68°0.2Rain
82 °Rain

Grand Tower, Saturday, 15 August

Rain. High 82°, low 68°.

Pressure30.15 inHg
Wind12.8 mph SE
Humidity68%
Visibility—
Dew point69°
Sun, 1691° / 69°0.11Light rain
91 °Light rain

Grand Tower, Sunday, 16 August

Light rain. High 91°, low 69°.

Pressure30.03 inHg
Wind10 mph N
Humidity59%
Visibility—
Dew point71°
Mon, 1789° / 72°0.11Light rain
89 °Light rain

Grand Tower, Monday, 17 August

Light rain. High 89°, low 72°.

Pressure30.03 inHg
Wind7.1 mph NE
Humidity69%
Visibility—
Dew point73°
Tue, 1886° / 72°0.03Light rain
86 °Light rain

Grand Tower, Tuesday, 18 August

Light rain. High 86°, low 72°.

Pressure30.00 inHg
Wind8.2 mph SE
Humidity71%
Visibility—
Dew point74°
Wed, 1992° / 69°0Overcast
92 °Overcast

Grand Tower, Wednesday, 19 August

Overcast. High 92°, low 69°.

Pressure29.88 inHg
Wind12.1 mph N
Humidity49%
Visibility—
Dew point65°
Thu, 2081° / 64°0Clear
81 °Clear

Grand Tower, Thursday, 20 August

Clear. High 81°, low 64°.

Pressure30.00 inHg
Wind11.2 mph NE
Humidity46%
Visibility—
Dew point55°
Fri, 2178° / 62°0.11Light rain
78 °Light rain

Grand Tower, Friday, 21 August

Light rain. High 78°, low 62°.

Pressure30.03 inHg
Wind9.5 mph E
Humidity64%
Visibility—
Dew point57°
Sat, 2299° / 64°0.19Light rain
99 °Light rain

Grand Tower, Saturday, 22 August

Light rain. High 99°, low 64°.

Pressure29.83 inHg
Wind14.2 mph SW
Humidity49%
Visibility—
Dew point65°
Sun, 2394° / 72°0.08Light rain
94 °Light rain

Grand Tower, Sunday, 23 August

Light rain. High 94°, low 72°.

Pressure29.94 inHg
Wind14.8 mph SW
Humidity44%
Visibility—
Dew point66°

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 Grand Tower, 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 Grand Tower, 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.