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As of 18:12 CDT

Weather in Grantfork, IL

90°Current weather

Grantfork, Saturday, 8 August, 18:12

Clear. Feels like 103°. High 90°, low 70°.

Pressure30.00 inHg
Wind1.7 mph S
Humidity65%
Visibility6.2 mi
Dew point77°
Sun, 0995° / 74°0Overcast
95 °Overcast

Grantfork, Sunday, 9 August

Overcast. High 95°, low 74°.

Pressure29.97 inHg
Wind13.3 mph S
Humidity69%
Visibility6.2 mi
Dew point74°
Mon, 1094° / 73°0Clear
94 °Clear

Grantfork, Monday, 10 August

Clear. High 94°, low 73°.

Pressure29.97 inHg
Wind12.2 mph SW
Humidity62%
Visibility6.2 mi
Dew point75°
Tue, 1194° / 74°0.04Light rain
94 °Light rain

Grantfork, Tuesday, 11 August

Light rain. High 94°, low 74°.

Pressure29.91 inHg
Wind9.9 mph W
Humidity58%
Visibility6.2 mi
Dew point74°
Wed, 1283° / 73°0.09Light rain
83 °Light rain

Grantfork, Wednesday, 12 August

Light rain. High 83°, low 73°.

Pressure29.85 inHg
Wind5.7 mph W
Humidity64%
Visibility6.2 mi
Dew point72°
Thu, 1378° / 70°0.53Rain
78 °Rain

Grantfork, Thursday, 13 August

Rain. High 78°, low 70°.

Pressure29.88 inHg
Wind7.7 mph NE
Humidity88%
Visibility—
Dew point73°
Fri, 1476° / 62°0.01Light rain
76 °Light rain

Grantfork, Friday, 14 August

Light rain. High 76°, low 62°.

Pressure30.15 inHg
Wind10.4 mph NE
Humidity55%
Visibility—
Dew point56°
Sat, 1576° / 56°0Mostly clear
76 °Mostly clear

Grantfork, Saturday, 15 August

Mostly clear. High 76°, low 56°.

Pressure30.30 inHg
Wind8.6 mph E
Humidity55%
Visibility—
Dew point55°
Sun, 1675° / 60°0.04Light rain
75 °Light rain

Grantfork, Sunday, 16 August

Light rain. High 75°, low 60°.

Pressure30.18 inHg
Wind9.8 mph SE
Humidity70%
Visibility—
Dew point63°
Mon, 1793° / 70°0.23Light rain
93 °Light rain

Grantfork, Monday, 17 August

Light rain. High 93°, low 70°.

Pressure29.94 inHg
Wind17.6 mph S
Humidity63%
Visibility—
Dew point71°
Tue, 1886° / 72°0Overcast
86 °Overcast

Grantfork, Tuesday, 18 August

Overcast. High 86°, low 72°.

Pressure29.97 inHg
Wind10.1 mph NE
Humidity67%
Visibility—
Dew point71°
Wed, 1989° / 71°0Overcast
89 °Overcast

Grantfork, Wednesday, 19 August

Overcast. High 89°, low 71°.

Pressure29.91 inHg
Wind7.2 mph E
Humidity65%
Visibility—
Dew point71°
Thu, 2083° / 73°2.01Heavy rain
83 °Heavy rain

Grantfork, Thursday, 20 August

Heavy rain. High 83°, low 73°.

Pressure29.88 inHg
Wind8.5 mph SE
Humidity72%
Visibility—
Dew point71°
Fri, 2181° / 69°0.06Light rain
81 °Light rain

Grantfork, Friday, 21 August

Light rain. High 81°, low 69°.

Pressure29.94 inHg
Wind9.5 mph NE
Humidity77%
Visibility—
Dew point68°
Sat, 2282° / 64°0Overcast
82 °Overcast

Grantfork, Saturday, 22 August

Overcast. High 82°, low 64°.

Pressure29.94 inHg
Wind13.1 mph NE
Humidity60%
Visibility—
Dew point64°
Sun, 2371° / 60°0.04Light rain
71 °Light rain

Grantfork, Sunday, 23 August

Light rain. High 71°, low 60°.

Pressure30.15 inHg
Wind14 mph NE
Humidity74%
Visibility—
Dew point56°

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 Grantfork, 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 Grantfork, 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.