As of 14:35 CDT

Weather in Rio, IL

82°

Rio, Saturday, 10 October, 14:35

Overcast. Feels like 82°. High 82°, low 59°.

Pressure30.00 inHg

Wind10.4 mph S

Humidity45%

Visibility6.2 mi

Dew point59°

See detailed hourly forecast

Sun, 1179° / 54°

79 °

Rio, Sunday, 11 October

Clear. High 79°, low 54°.

Pressure29.97 inHg

Wind8 mph S

Humidity55%

Visibility6.2 mi

Dew point56°

Mon, 1284° / 65°

84 °

Rio, Monday, 12 October

Clear. High 84°, low 65°.

Pressure29.83 inHg

Wind12.4 mph SW

Humidity58%

Visibility6.2 mi

Dew point64°

Tue, 1377° / 66°

77 °

Rio, Tuesday, 13 October

Clear. High 77°, low 66°.

Pressure29.88 inHg

Wind7.7 mph W

Humidity67%

Visibility6.2 mi

Dew point63°

Wed, 1469° / 60°

0.03

69 °

Rio, Wednesday, 14 October

Light rain. High 69°, low 60°.

Pressure30.12 inHg

Wind9.4 mph NE

Humidity64%

Visibility6.2 mi

Dew point54°

Thu, 1557° / 53°

0.32

57 °

Rio, Thursday, 15 October

Light rain. High 57°, low 53°.

Pressure30.27 inHg

Wind11.7 mph E

Humidity86%

Visibility—

Dew point52°

Fri, 1658° / 38°

58 °

Rio, Friday, 16 October

Partly cloudy. High 58°, low 38°.

Pressure29.94 inHg

Wind27.4 mph W

Humidity46%

Visibility—

Dew point31°

Sat, 1741° / 32°

41 °

Rio, Saturday, 17 October

Overcast. High 41°, low 32°.

Pressure30.39 inHg

Wind22.7 mph NW

Humidity48%

Visibility—

Dew point21°

Sun, 1848° / 27°

48 °

Rio, Sunday, 18 October

Clear. High 48°, low 27°.

Pressure30.50 inHg

Wind8.1 mph S

Humidity37%

Visibility—

Dew point18°

Mon, 1959° / 36°

59 °

Rio, Monday, 19 October

Overcast. High 59°, low 36°.

Pressure30.33 inHg

Wind16.2 mph S

Humidity36%

Visibility—

Dew point27°

Tue, 2063° / 42°

63 °

Rio, Tuesday, 20 October

Overcast. High 63°, low 42°.

Pressure30.21 inHg

Wind17.6 mph S

Humidity34%

Visibility—

Dew point29°

Wed, 2157° / 47°

0.28

57 °

Rio, Wednesday, 21 October

Rain. High 57°, low 47°.

Pressure29.97 inHg

Wind16.3 mph W

Humidity94%

Visibility—

Dew point48°

Thu, 2267° / 42°

67 °

Rio, Thursday, 22 October

Clear. High 67°, low 42°.

Pressure30.09 inHg

Wind15.7 mph SW

Humidity43%

Visibility—

Dew point38°

Fri, 2358° / 42°

58 °

Rio, Friday, 23 October

Clear. High 58°, low 42°.

Pressure30.21 inHg

Wind9.3 mph N

Humidity43%

Visibility—

Dew point32°

Sat, 2457° / 48°

0.04

57 °

Rio, Saturday, 24 October

Light rain. High 57°, low 48°.

Pressure30.18 inHg

Wind9.6 mph SE

Humidity52%

Visibility—

Dew point35°

Sun, 2558° / 37°

0.3

58 °

Rio, Sunday, 25 October

Light rain. High 58°, low 37°.

Pressure29.83 inHg

Wind18 mph N

Humidity75%

Visibility—

Dew point47°

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.