As of 22:16 CDT

Weather in St. Elmo, IL

77°

St. Elmo, Monday, 12 October, 22:16

Clear. Feels like 77°. High 90°, low 61°.

Pressure29.85 inHg

Wind6 mph W

Humidity61%

Visibility6.2 mi

Dew point62°

See detailed hourly forecast

Tue, 1392° / 68°

92 °

St. Elmo, Tuesday, 13 October

Clear. High 92°, low 68°.

Pressure29.91 inHg

Wind8.6 mph SW

Humidity52%

Visibility6.2 mi

Dew point65°

Wed, 1483° / 69°

0.3

83 °

St. Elmo, Wednesday, 14 October

Rain. High 83°, low 69°.

Pressure30.03 inHg

Wind3.7 mph NW

Humidity94%

Visibility5.1 mi

Dew point71°

Thu, 1581° / 70°

0.35

81 °

St. Elmo, Thursday, 15 October

Heavy rain. High 81°, low 70°.

Pressure30.00 inHg

Wind9.3 mph SW

Humidity94%

Visibility4.9 mi

Dew point72°

Fri, 1665° / 51°

0.13

65 °

St. Elmo, Friday, 16 October

Light rain. High 65°, low 51°.

Pressure30.27 inHg

Wind20.2 mph NW

Humidity43%

Visibility6.2 mi

Dew point35°

Sat, 1760° / 42°

60 °

St. Elmo, Saturday, 17 October

Clear. High 60°, low 42°.

Pressure30.50 inHg

Wind9.4 mph N

Humidity47%

Visibility—

Dew point36°

Sun, 1867° / 43°

67 °

St. Elmo, Sunday, 18 October

Mostly clear. High 67°, low 43°.

Pressure30.30 inHg

Wind9 mph S

Humidity37%

Visibility—

Dew point34°

Mon, 1971° / 50°

71 °

St. Elmo, Monday, 19 October

Overcast. High 71°, low 50°.

Pressure30.24 inHg

Wind10.5 mph S

Humidity47%

Visibility—

Dew point47°

Tue, 2073° / 60°

0.06

73 °

St. Elmo, Tuesday, 20 October

Light rain. High 73°, low 60°.

Pressure30.15 inHg

Wind11 mph SE

Humidity60%

Visibility—

Dew point57°

Wed, 2173° / 59°

73 °

St. Elmo, Wednesday, 21 October

Overcast. High 73°, low 59°.

Pressure30.18 inHg

Wind13 mph SE

Humidity60%

Visibility—

Dew point54°

Thu, 2281° / 61°

81 °

St. Elmo, Thursday, 22 October

Overcast. High 81°, low 61°.

Pressure30.06 inHg

Wind21.5 mph S

Humidity43%

Visibility—

Dew point53°

Fri, 2370° / 55°

0.22

70 °

St. Elmo, Friday, 23 October

Rain. High 70°, low 55°.

Pressure30.09 inHg

Wind21.4 mph S

Humidity66%

Visibility—

Dew point53°

Sat, 2466° / 49°

66 °

St. Elmo, Saturday, 24 October

Overcast. High 66°, low 49°.

Pressure30.33 inHg

Wind10 mph N

Humidity39%

Visibility—

Dew point38°

Sun, 2560° / 46°

60 °

St. Elmo, Sunday, 25 October

Overcast. High 60°, low 46°.

Pressure30.27 inHg

Wind14.2 mph NW

Humidity33%

Visibility—

Dew point30°

Mon, 2656° / 43°

0.01

56 °

St. Elmo, Monday, 26 October

Light rain. High 56°, low 43°.

Pressure30.12 inHg

Wind9.6 mph SW

Humidity47%

Visibility—

Dew point34°

Tue, 2766° / 42°

0.01

66 °

St. Elmo, Tuesday, 27 October

Light rain. High 66°, low 42°.

Pressure29.71 inHg

Wind17.2 mph W

Humidity42%

Visibility—

Dew point38°

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.