As of 08:15 CDT

Weather in St. Elmo, IL

69°

St. Elmo, Tuesday, 13 October, 08:15

Clear. Feels like 69°. High 91°, low 68°.

Pressure29.88 inHg

Wind4 mph W

Humidity74%

Visibility6.2 mi

Dew point60°

See detailed hourly forecast

Wed, 1481° / 68°

0.21

81 °

St. Elmo, Wednesday, 14 October

Rain. High 81°, low 68°.

Pressure30.03 inHg

Wind5.3 mph SW

Humidity77%

Visibility3.0 mi

Dew point71°

Thu, 1583° / 67°

0.28

83 °

St. Elmo, Thursday, 15 October

Rain. High 83°, low 67°.

Pressure30.00 inHg

Wind12.1 mph SW

Humidity79%

Visibility6.2 mi

Dew point70°

Fri, 1671° / 52°

0.02

71 °

St. Elmo, Friday, 16 October

Light rain. High 71°, low 52°.

Pressure30.21 inHg

Wind20.5 mph NW

Humidity46%

Visibility6.2 mi

Dew point36°

Sat, 1760° / 42°

60 °

St. Elmo, Saturday, 17 October

Clear. High 60°, low 42°.

Pressure30.50 inHg

Wind10.7 mph N

Humidity46%

Visibility—

Dew point35°

Sun, 1865° / 44°

65 °

St. Elmo, Sunday, 18 October

Clear. High 65°, low 44°.

Pressure30.36 inHg

Wind8.4 mph S

Humidity38%

Visibility—

Dew point35°

Mon, 1967° / 52°

67 °

St. Elmo, Monday, 19 October

Overcast. High 67°, low 52°.

Pressure30.21 inHg

Wind7.6 mph W

Humidity37%

Visibility—

Dew point38°

Tue, 2066° / 55°

0.02

66 °

St. Elmo, Tuesday, 20 October

Light rain. High 66°, low 55°.

Pressure30.24 inHg

Wind8 mph E

Humidity82%

Visibility—

Dew point57°

Wed, 2168° / 61°

0.12

68 °

St. Elmo, Wednesday, 21 October

Light rain. High 68°, low 61°.

Pressure30.21 inHg

Wind10.5 mph SE

Humidity85%

Visibility—

Dew point62°

Thu, 2281° / 63°

81 °

St. Elmo, Thursday, 22 October

Overcast. High 81°, low 63°.

Pressure30.06 inHg

Wind20.4 mph S

Humidity46%

Visibility—

Dew point56°

Fri, 2380° / 65°

80 °

St. Elmo, Friday, 23 October

Mostly clear. High 80°, low 65°.

Pressure30.00 inHg

Wind23.8 mph SW

Humidity44%

Visibility—

Dew point54°

Sat, 2466° / 52°

66 °

St. Elmo, Saturday, 24 October

Overcast. High 66°, low 52°.

Pressure30.33 inHg

Wind10.1 mph N

Humidity29%

Visibility—

Dew point31°

Sun, 2565° / 51°

65 °

St. Elmo, Sunday, 25 October

Overcast. High 65°, low 51°.

Pressure30.27 inHg

Wind9.8 mph NW

Humidity34%

Visibility—

Dew point35°

Mon, 2658° / 46°

58 °

St. Elmo, Monday, 26 October

Overcast. High 58°, low 46°.

Pressure30.21 inHg

Wind14 mph NW

Humidity32%

Visibility—

Dew point26°

Tue, 2759° / 43°

59 °

St. Elmo, Tuesday, 27 October

Overcast. High 59°, low 43°.

Pressure30.24 inHg

Wind7.9 mph SE

Humidity36%

Visibility—

Dew point29°

Wed, 2865° / 48°

65 °

St. Elmo, Wednesday, 28 October

Overcast. High 65°, low 48°.

Pressure30.09 inHg

Wind12.5 mph S

Humidity31%

Visibility—

Dew point29°

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.