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As of 17:57 CDT

Weather in St. Elmo, IL

80°Current weather

St. Elmo, Sunday, 11 October, 17:57

Clear. Feels like 80°. High 81°, low 54°.

Pressure29.94 inHg
Wind3.4 mph SW
Humidity52%
Visibility6.2 mi
Dew point61°
Mon, 1289° / 61°0Partly cloudy
89 °Partly cloudy

St. Elmo, Monday, 12 October

Partly cloudy. High 89°, low 61°.

Pressure29.94 inHg
Wind10.7 mph SW
Humidity49%
Visibility6.2 mi
Dew point61°
Tue, 1388° / 67°0Clear
88 °Clear

St. Elmo, Tuesday, 13 October

Clear. High 88°, low 67°.

Pressure29.91 inHg
Wind8.7 mph SW
Humidity53%
Visibility6.2 mi
Dew point65°
Wed, 1481° / 70°0.19Rain
81 °Rain

St. Elmo, Wednesday, 14 October

Rain. High 81°, low 70°.

Pressure30.00 inHg
Wind2.9 mph SW
Humidity88%
Visibility6.0 mi
Dew point72°
Thu, 1579° / 70°0.35Rain
79 °Rain

St. Elmo, Thursday, 15 October

Rain. High 79°, low 70°.

Pressure30.00 inHg
Wind9.6 mph SW
Humidity84%
Visibility4.0 mi
Dew point72°
Fri, 1670° / 53°0.73Rain
70 °Rain

St. Elmo, Friday, 16 October

Rain. High 70°, low 53°.

Pressure30.39 inHg
Wind17.4 mph N
Humidity45%
Visibility—
Dew point40°
Sat, 1753° / 40°0Clear
53 °Clear

St. Elmo, Saturday, 17 October

Clear. High 53°, low 40°.

Pressure30.59 inHg
Wind9.7 mph NE
Humidity32%
Visibility—
Dew point23°
Sun, 1862° / 35°0Clear
62 °Clear

St. Elmo, Sunday, 18 October

Clear. High 62°, low 35°.

Pressure30.53 inHg
Wind13 mph S
Humidity21%
Visibility—
Dew point16°
Mon, 1968° / 42°0Clear
68 °Clear

St. Elmo, Monday, 19 October

Clear. High 68°, low 42°.

Pressure30.45 inHg
Wind13.3 mph SW
Humidity22%
Visibility—
Dew point24°
Tue, 2071° / 49°0Overcast
71 °Overcast

St. Elmo, Tuesday, 20 October

Overcast. High 71°, low 49°.

Pressure30.33 inHg
Wind11.1 mph S
Humidity43%
Visibility—
Dew point44°
Wed, 2174° / 58°0Overcast
74 °Overcast

St. Elmo, Wednesday, 21 October

Overcast. High 74°, low 58°.

Pressure30.21 inHg
Wind15.5 mph S
Humidity46%
Visibility—
Dew point49°
Thu, 2269° / 63°0.01Light rain
69 °Light rain

St. Elmo, Thursday, 22 October

Light rain. High 69°, low 63°.

Pressure30.27 inHg
Wind12.7 mph S
Humidity87%
Visibility—
Dew point59°
Fri, 2377° / 61°0Overcast
77 °Overcast

St. Elmo, Friday, 23 October

Overcast. High 77°, low 61°.

Pressure30.12 inHg
Wind17.4 mph S
Humidity42%
Visibility—
Dew point50°
Sat, 2470° / 51°0.09Light rain
70 °Light rain

St. Elmo, Saturday, 24 October

Light rain. High 70°, low 51°.

Pressure30.06 inHg
Wind15 mph SW
Humidity89%
Visibility—
Dew point57°
Sun, 2554° / 44°0Overcast
54 °Overcast

St. Elmo, Sunday, 25 October

Overcast. High 54°, low 44°.

Pressure30.15 inHg
Wind12.7 mph NW
Humidity48%
Visibility—
Dew point34°
Mon, 2659° / 44°0Overcast
59 °Overcast

St. Elmo, Monday, 26 October

Overcast. High 59°, low 44°.

Pressure30.00 inHg
Wind15.6 mph NW
Humidity40%
Visibility—
Dew point32°

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.