As of 12:12 CDT

Weather in St. Elmo, IL

68°

St. Elmo, Monday, 19 October, 12:12

Overcast. Feels like 67°. High 68°, low 39°.

Pressure30.42 inHg

Wind3 mph W

Humidity48%

Visibility6.2 mi

Dew point47°

See detailed hourly forecast

Tue, 2071° / 43°

71 °

St. Elmo, Tuesday, 20 October

Clear. High 71°, low 43°.

Pressure30.36 inHg

Wind1.3 mph E

Humidity49%

Visibility6.2 mi

Dew point46°

Wed, 2169° / 44°

69 °

St. Elmo, Wednesday, 21 October

Mostly clear. High 69°, low 44°.

Pressure30.30 inHg

Wind0.3 mph W

Humidity50%

Visibility6.2 mi

Dew point47°

Thu, 2270° / 48°

70 °

St. Elmo, Thursday, 22 October

Clear. High 70°, low 48°.

Pressure30.30 inHg

Wind5.7 mph NE

Humidity49%

Visibility6.2 mi

Dew point49°

Fri, 2367° / 48°

67 °

St. Elmo, Friday, 23 October

Clear. High 67°, low 48°.

Pressure30.33 inHg

Wind5.9 mph E

Humidity58%

Visibility6.2 mi

Dew point48°

Sat, 2467° / 47°

67 °

St. Elmo, Saturday, 24 October

Overcast. High 67°, low 47°.

Pressure30.39 inHg

Wind7 mph SE

Humidity43%

Visibility—

Dew point39°

Sun, 2576° / 52°

76 °

St. Elmo, Sunday, 25 October

Overcast. High 76°, low 52°.

Pressure30.33 inHg

Wind12.4 mph SW

Humidity26%

Visibility—

Dew point35°

Mon, 2673° / 58°

73 °

St. Elmo, Monday, 26 October

Overcast. High 73°, low 58°.

Pressure30.21 inHg

Wind9.2 mph S

Humidity32%

Visibility—

Dew point39°

Tue, 2772° / 47°

0.1

72 °

St. Elmo, Tuesday, 27 October

Light rain. High 72°, low 47°.

Pressure30.00 inHg

Wind18.3 mph NW

Humidity29%

Visibility—

Dew point36°

Wed, 2846° / 34°

46 °

St. Elmo, Wednesday, 28 October

Clear. High 46°, low 34°.

Pressure30.36 inHg

Wind18.3 mph NW

Humidity25%

Visibility—

Dew point10°

Thu, 2954° / 29°

54 °

St. Elmo, Thursday, 29 October

Clear. High 54°, low 29°.

Pressure30.30 inHg

Wind7.4 mph SW

Humidity22%

Visibility—

Dew point11°

Fri, 3054° / 37°

54 °

St. Elmo, Friday, 30 October

Overcast. High 54°, low 37°.

Pressure30.06 inHg

Wind11.4 mph S

Humidity21%

Visibility—

Dew point10°

Sat, 3149° / 43°

0.58

49 °

St. Elmo, Saturday, 31 October

Light rain. High 49°, low 43°.

Pressure30.12 inHg

Wind10.5 mph S

Humidity85%

Visibility—

Dew point42°

Sun, 0165° / 47°

0.11

65 °

St. Elmo, Sunday, 1 November

Light rain. High 65°, low 47°.

Pressure29.97 inHg

Wind17 mph NW

Humidity69%

Visibility—

Dew point49°

Mon, 0252° / 40°

52 °

St. Elmo, Monday, 2 November

Overcast. High 52°, low 40°.

Pressure30.15 inHg

Wind16.5 mph NW

Humidity42%

Visibility—

Dew point27°

Tue, 0348° / 37°

0.01

48 °

St. Elmo, Tuesday, 3 November

Light rain. High 48°, low 37°.

Pressure30.03 inHg

Wind6 mph N

Humidity62%

Visibility—

Dew point34°

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.