As of 19:02 CDT

Weather in St. David, IL

51°

St. David, Friday, 16 October, 19:02

Clear. Feels like 50°. High 55°, low 47°.

Pressure30.33 inHg

Wind14.8 mph N

Humidity87%

Visibility6.2 mi

Dew point46°

See detailed hourly forecast

Sat, 1757° / 37°

57 °

St. David, Saturday, 17 October

Clear. High 57°, low 37°.

Pressure30.56 inHg

Wind1.8 mph SW

Humidity45%

Visibility6.2 mi

Dew point31°

Sun, 1863° / 42°

63 °

St. David, Sunday, 18 October

Clear. High 63°, low 42°.

Pressure30.47 inHg

Wind10.9 mph S

Humidity51%

Visibility6.2 mi

Dew point41°

Mon, 1965° / 43°

65 °

St. David, Monday, 19 October

Partly cloudy. High 65°, low 43°.

Pressure30.39 inHg

Wind5.5 mph S

Humidity54%

Visibility6.2 mi

Dew point44°

Tue, 2068° / 46°

68 °

St. David, Tuesday, 20 October

Clear. High 68°, low 46°.

Pressure30.33 inHg

Wind5.4 mph SE

Humidity53%

Visibility6.2 mi

Dew point46°

Wed, 2168° / 49°

0.03

68 °

St. David, Wednesday, 21 October

Light rain. High 68°, low 49°.

Pressure30.27 inHg

Wind6.7 mph S

Humidity57%

Visibility—

Dew point49°

Thu, 2275° / 52°

75 °

St. David, Thursday, 22 October

Clear. High 75°, low 52°.

Pressure30.18 inHg

Wind7.2 mph S

Humidity39%

Visibility—

Dew point43°

Fri, 2375° / 56°

75 °

St. David, Friday, 23 October

Overcast. High 75°, low 56°.

Pressure30.18 inHg

Wind7.2 mph SE

Humidity31%

Visibility—

Dew point38°

Sat, 2477° / 59°

77 °

St. David, Saturday, 24 October

Partly cloudy. High 77°, low 59°.

Pressure30.24 inHg

Wind9.1 mph S

Humidity31%

Visibility—

Dew point40°

Sun, 2578° / 57°

78 °

St. David, Sunday, 25 October

Overcast. High 78°, low 57°.

Pressure30.15 inHg

Wind11.9 mph S

Humidity33%

Visibility—

Dew point43°

Mon, 2663° / 43°

0.01

63 °

St. David, Monday, 26 October

Light rain. High 63°, low 43°.

Pressure30.24 inHg

Wind15.7 mph NW

Humidity48%

Visibility—

Dew point37°

Tue, 2758° / 38°

58 °

St. David, Tuesday, 27 October

Mostly clear. High 58°, low 38°.

Pressure30.36 inHg

Wind5.6 mph NW

Humidity34%

Visibility—

Dew point25°

Wed, 2866° / 48°

66 °

St. David, Wednesday, 28 October

Overcast. High 66°, low 48°.

Pressure30.18 inHg

Wind12.7 mph S

Humidity22%

Visibility—

Dew point22°

Thu, 2966° / 58°

0.01

66 °

St. David, Thursday, 29 October

Light rain. High 66°, low 58°.

Pressure29.74 inHg

Wind19.3 mph W

Humidity71%

Visibility—

Dew point54°

Fri, 3062° / 49°

62 °

St. David, Friday, 30 October

Mostly clear. High 62°, low 49°.

Pressure30.03 inHg

Wind17 mph NW

Humidity51%

Visibility—

Dew point41°

Sat, 3165° / 47°

0.05

65 °

St. David, Saturday, 31 October

Light rain. High 65°, low 47°.

Pressure29.94 inHg

Wind15.9 mph S

Humidity49%

Visibility—

Dew point42°

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. David, 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. David, 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.