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As of 08:03 CDT

Weather in Rio, IL

57°Current weather

Rio, Friday, 9 October, 08:03

Rain. Feels like 57°. High 81°, low 55°.

Pressure30.09 inHg
Wind4.6 mph NW
Humidity95%
Visibility6.2 mi
Dew point55°
Sat, 1079° / 62°0Overcast
79 °Overcast

Rio, Saturday, 10 October

Overcast. High 79°, low 62°.

Pressure30.03 inHg
Wind9.3 mph S
Humidity55%
Visibility6.2 mi
Dew point57°
Sun, 1177° / 57°0Clear
77 °Clear

Rio, Sunday, 11 October

Clear. High 77°, low 57°.

Pressure29.91 inHg
Wind3.8 mph SE
Humidity58%
Visibility6.2 mi
Dew point57°
Mon, 1285° / 65°0Mostly clear
85 °Mostly clear

Rio, Monday, 12 October

Mostly clear. High 85°, low 65°.

Pressure29.80 inHg
Wind12.7 mph SW
Humidity55%
Visibility6.2 mi
Dew point63°
Tue, 1383° / 69°0.05Light rain
83 °Light rain

Rio, Tuesday, 13 October

Light rain. High 83°, low 69°.

Pressure29.80 inHg
Wind11.8 mph SW
Humidity63%
Visibility—
Dew point67°
Wed, 1474° / 64°0.34Rain
74 °Rain

Rio, Wednesday, 14 October

Rain. High 74°, low 64°.

Pressure29.83 inHg
Wind8.5 mph E
Humidity89%
Visibility—
Dew point69°
Thu, 1575° / 58°1.05Rain
75 °Rain

Rio, Thursday, 15 October

Rain. High 75°, low 58°.

Pressure29.71 inHg
Wind21.5 mph SW
Humidity93%
Visibility—
Dew point65°
Fri, 1656° / 45°0Clear
56 °Clear

Rio, Friday, 16 October

Clear. High 56°, low 45°.

Pressure30.06 inHg
Wind25 mph W
Humidity46%
Visibility—
Dew point31°
Sat, 1747° / 40°0Overcast
47 °Overcast

Rio, Saturday, 17 October

Overcast. High 47°, low 40°.

Pressure30.36 inHg
Wind15.1 mph NW
Humidity61%
Visibility—
Dew point32°
Sun, 1855° / 36°0Clear
55 °Clear

Rio, Sunday, 18 October

Clear. High 55°, low 36°.

Pressure30.33 inHg
Wind7.6 mph SW
Humidity49%
Visibility—
Dew point32°
Mon, 1961° / 42°0Overcast
61 °Overcast

Rio, Monday, 19 October

Overcast. High 61°, low 42°.

Pressure30.33 inHg
Wind7.2 mph SE
Humidity43%
Visibility—
Dew point34°
Tue, 2064° / 44°0Clear
64 °Clear

Rio, Tuesday, 20 October

Clear. High 64°, low 44°.

Pressure30.36 inHg
Wind8.5 mph SE
Humidity47%
Visibility—
Dew point39°
Wed, 2166° / 46°0Clear
66 °Clear

Rio, Wednesday, 21 October

Clear. High 66°, low 46°.

Pressure30.27 inHg
Wind7.3 mph SE
Humidity44%
Visibility—
Dew point40°
Thu, 2266° / 48°0Clear
66 °Clear

Rio, Thursday, 22 October

Clear. High 66°, low 48°.

Pressure30.27 inHg
Wind6.2 mph NE
Humidity45%
Visibility—
Dew point41°
Fri, 2365° / 47°0Clear
65 °Clear

Rio, Friday, 23 October

Clear. High 65°, low 47°.

Pressure30.21 inHg
Wind6.2 mph NE
Humidity42%
Visibility—
Dew point38°
Sat, 2466° / 47°0Clear
66 °Clear

Rio, Saturday, 24 October

Clear. High 66°, low 47°.

Pressure30.12 inHg
Wind5.6 mph NE
Humidity53%
Visibility—
Dew point45°

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.