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As of 17:15 CDT

Weather in Rio, IL

83°Current weather

Rio, Saturday, 8 August, 17:15

Clear. Feels like 87°. High 83°, low 68°.

Pressure30.00 inHg
Wind1.8 mph NW
Humidity65%
Visibility6.2 mi
Dew point69°
Sun, 0991° / 66°0Overcast
91 °Overcast

Rio, Sunday, 9 August

Overcast. High 91°, low 66°.

Pressure29.88 inHg
Wind13.3 mph SW
Humidity66%
Visibility6.2 mi
Dew point73°
Mon, 1088° / 72°0.02Light rain
88 °Light rain

Rio, Monday, 10 August

Light rain. High 88°, low 72°.

Pressure29.88 inHg
Wind3.3 mph SW
Humidity78%
Visibility6.2 mi
Dew point73°
Tue, 1191° / 73°0Light rain
91 °Light rain

Rio, Tuesday, 11 August

Light rain. High 91°, low 73°.

Pressure29.77 inHg
Wind15 mph S
Humidity68%
Visibility6.2 mi
Dew point71°
Wed, 1278° / 70°0.06Light rain
78 °Light rain

Rio, Wednesday, 12 August

Light rain. High 78°, low 70°.

Pressure29.88 inHg
Wind7.9 mph E
Humidity79%
Visibility6.2 mi
Dew point70°
Thu, 1373° / 64°0.36Rain
73 °Rain

Rio, Thursday, 13 August

Rain. High 73°, low 64°.

Pressure29.91 inHg
Wind10.7 mph NE
Humidity87%
Visibility—
Dew point67°
Fri, 1476° / 56°0Clear
76 °Clear

Rio, Friday, 14 August

Clear. High 76°, low 56°.

Pressure30.18 inHg
Wind7.2 mph E
Humidity60%
Visibility—
Dew point57°
Sat, 1576° / 56°0Overcast
76 °Overcast

Rio, Saturday, 15 August

Overcast. High 76°, low 56°.

Pressure30.30 inHg
Wind8.7 mph SE
Humidity60%
Visibility—
Dew point57°
Sun, 1674° / 58°0Overcast
74 °Overcast

Rio, Sunday, 16 August

Overcast. High 74°, low 58°.

Pressure30.15 inHg
Wind12.1 mph SE
Humidity69%
Visibility—
Dew point59°
Mon, 1781° / 66°0.02Light rain
81 °Light rain

Rio, Monday, 17 August

Light rain. High 81°, low 66°.

Pressure29.94 inHg
Wind7.5 mph SE
Humidity82%
Visibility—
Dew point71°
Tue, 1885° / 71°0.02Light rain
85 °Light rain

Rio, Tuesday, 18 August

Light rain. High 85°, low 71°.

Pressure30.00 inHg
Wind7.7 mph SE
Humidity68%
Visibility—
Dew point70°
Wed, 1988° / 69°0.09Light rain
88 °Light rain

Rio, Wednesday, 19 August

Light rain. High 88°, low 69°.

Pressure29.88 inHg
Wind11.3 mph NE
Humidity64%
Visibility—
Dew point70°
Thu, 2080° / 66°0.49Rain
80 °Rain

Rio, Thursday, 20 August

Rain. High 80°, low 66°.

Pressure29.91 inHg
Wind12.3 mph NE
Humidity66%
Visibility—
Dew point66°
Fri, 2181° / 63°0Clear
81 °Clear

Rio, Friday, 21 August

Clear. High 81°, low 63°.

Pressure29.97 inHg
Wind6.8 mph NE
Humidity58%
Visibility—
Dew point61°
Sat, 2281° / 61°0.02Light rain
81 °Light rain

Rio, Saturday, 22 August

Light rain. High 81°, low 61°.

Pressure29.91 inHg
Wind18.1 mph NE
Humidity57%
Visibility—
Dew point62°
Sun, 2368° / 47°0Mostly clear
68 °Mostly clear

Rio, Sunday, 23 August

Mostly clear. High 68°, low 47°.

Pressure30.21 inHg
Wind13.1 mph E
Humidity48%
Visibility—
Dew point44°

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 Rio, 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 Rio, 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.