As of 16:29 CDT

Weather in St. Elmo, IL

91°Current weather

St. Elmo, Saturday, 8 August, 16:29

Clear. Feels like 103°. High 91°, low 71°.

Pressure30.00 inHg
Wind6.7 mph SW
Humidity64%
Visibility6.2 mi
Dew point77°
Sun, 0992° / 73°0Partly cloudy
92 °Partly cloudy

St. Elmo, Sunday, 9 August

Partly cloudy. High 92°, low 73°.

Pressure30.00 inHg
Wind12.7 mph S
Humidity65%
Visibility6.2 mi
Dew point72°
Mon, 1094° / 74°0Partly cloudy
94 °Partly cloudy

St. Elmo, Monday, 10 August

Partly cloudy. High 94°, low 74°.

Pressure29.97 inHg
Wind14.5 mph SW
Humidity62%
Visibility6.2 mi
Dew point74°
Tue, 1190° / 75°0Partly cloudy
90 °Partly cloudy

St. Elmo, Tuesday, 11 August

Partly cloudy. High 90°, low 75°.

Pressure29.91 inHg
Wind14.9 mph SW
Humidity60%
Visibility6.2 mi
Dew point73°
Wed, 1287° / 70°0.29Rain
87 °Rain

St. Elmo, Wednesday, 12 August

Rain. High 87°, low 70°.

Pressure29.83 inHg
Wind4.2 mph NW
Humidity64%
Visibility6.2 mi
Dew point73°
Thu, 1380° / 70°0.65Rain
80 °Rain

St. Elmo, Thursday, 13 August

Rain. High 80°, low 70°.

Pressure29.88 inHg
Wind7.5 mph W
Humidity82%
Visibility
Dew point73°
Fri, 1475° / 62°0.02Light rain
75 °Light rain

St. Elmo, Friday, 14 August

Light rain. High 75°, low 62°.

Pressure30.15 inHg
Wind11.8 mph NE
Humidity53%
Visibility
Dew point55°
Sat, 1575° / 55°0Partly cloudy
75 °Partly cloudy

St. Elmo, Saturday, 15 August

Partly cloudy. High 75°, low 55°.

Pressure30.30 inHg
Wind7.3 mph E
Humidity58%
Visibility
Dew point55°
Sun, 1680° / 57°0.01Light rain
80 °Light rain

St. Elmo, Sunday, 16 August

Light rain. High 80°, low 57°.

Pressure30.21 inHg
Wind9.5 mph S
Humidity55%
Visibility
Dew point58°
Mon, 1789° / 68°0.13Light rain
89 °Light rain

St. Elmo, Monday, 17 August

Light rain. High 89°, low 68°.

Pressure29.94 inHg
Wind16.9 mph S
Humidity74%
Visibility
Dew point73°
Tue, 1885° / 72°0Overcast
85 °Overcast

St. Elmo, Tuesday, 18 August

Overcast. High 85°, low 72°.

Pressure29.97 inHg
Wind10.4 mph NE
Humidity66%
Visibility
Dew point71°
Wed, 1988° / 70°0Partly cloudy
88 °Partly cloudy

St. Elmo, Wednesday, 19 August

Partly cloudy. High 88°, low 70°.

Pressure29.91 inHg
Wind7.7 mph SE
Humidity64%
Visibility
Dew point70°
Thu, 2085° / 71°1Heavy rain
85 °Heavy rain

St. Elmo, Thursday, 20 August

Heavy rain. High 85°, low 71°.

Pressure29.88 inHg
Wind7.9 mph SE
Humidity68%
Visibility
Dew point69°
Fri, 2182° / 69°0.01Light rain
82 °Light rain

St. Elmo, Friday, 21 August

Light rain. High 82°, low 69°.

Pressure29.94 inHg
Wind8.5 mph NE
Humidity81%
Visibility
Dew point66°
Sat, 2284° / 64°0Overcast
84 °Overcast

St. Elmo, Saturday, 22 August

Overcast. High 84°, low 64°.

Pressure29.94 inHg
Wind15.6 mph NE
Humidity58%
Visibility
Dew point63°
Sun, 2373° / 59°0.03Light rain
73 °Light rain

St. Elmo, Sunday, 23 August

Light rain. High 73°, low 59°.

Pressure30.15 inHg
Wind13.6 mph E
Humidity60%
Visibility
Dew point54°

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 St. Elmo, 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 St. Elmo, 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.