As of 01:04 CDT

Weather in St. David, IL

64°

St. David, Thursday, 15 October, 01:04

Overcast. Feels like 64°. High 70°, low 59°.

Pressure30.09 inHg

Wind9 mph E

Humidity84%

Visibility6.2 mi

Dew point58°

See detailed hourly forecast

Fri, 1657° / 47°

0.03

57 °

St. David, Friday, 16 October

Light rain. High 57°, low 47°.

Pressure30.15 inHg

Wind17.1 mph NW

Humidity62%

Visibility6.2 mi

Dew point41°

Sat, 1757° / 38°

57 °

St. David, Saturday, 17 October

Clear. High 57°, low 38°.

Pressure30.59 inHg

Wind1.1 mph W

Humidity47%

Visibility6.2 mi

Dew point32°

Sun, 1862° / 41°

62 °

St. David, Sunday, 18 October

Clear. High 62°, low 41°.

Pressure30.47 inHg

Wind9.3 mph S

Humidity50%

Visibility6.2 mi

Dew point39°

Mon, 1964° / 42°

64 °

St. David, Monday, 19 October

Overcast. High 64°, low 42°.

Pressure30.39 inHg

Wind5.6 mph S

Humidity47%

Visibility—

Dew point40°

Tue, 2071° / 47°

71 °

St. David, Tuesday, 20 October

Clear. High 71°, low 47°.

Pressure30.33 inHg

Wind6.1 mph SE

Humidity45%

Visibility—

Dew point43°

Wed, 2175° / 55°

75 °

St. David, Wednesday, 21 October

Mostly clear. High 75°, low 55°.

Pressure30.30 inHg

Wind10.3 mph S

Humidity45%

Visibility—

Dew point48°

Thu, 2279° / 57°

79 °

St. David, Thursday, 22 October

Clear. High 79°, low 57°.

Pressure30.18 inHg

Wind14.3 mph S

Humidity41%

Visibility—

Dew point48°

Fri, 2379° / 64°

0.13

79 °

St. David, Friday, 23 October

Light rain. High 79°, low 64°.

Pressure29.97 inHg

Wind20.4 mph S

Humidity51%

Visibility—

Dew point57°

Sat, 2470° / 64°

0.5

70 °

St. David, Saturday, 24 October

Rain. High 70°, low 64°.

Pressure30.15 inHg

Wind4.9 mph NE

Humidity90%

Visibility—

Dew point64°

Sun, 2563° / 50°

0.17

63 °

St. David, Sunday, 25 October

Light rain. High 63°, low 50°.

Pressure30.18 inHg

Wind14.6 mph NW

Humidity69%

Visibility—

Dew point47°

Mon, 2658° / 45°

0.94

58 °

St. David, Monday, 26 October

Heavy rain. High 58°, low 45°.

Pressure30.12 inHg

Wind17.9 mph NW

Humidity42%

Visibility—

Dew point32°

Tue, 2761° / 44°

61 °

St. David, Tuesday, 27 October

Mostly clear. High 61°, low 44°.

Pressure30.15 inHg

Wind5.7 mph W

Humidity45%

Visibility—

Dew point37°

Wed, 2862° / 47°

62 °

St. David, Wednesday, 28 October

Overcast. High 62°, low 47°.

Pressure29.91 inHg

Wind5.5 mph SW

Humidity46%

Visibility—

Dew point38°

Thu, 2962° / 48°

62 °

St. David, Thursday, 29 October

Clear. High 62°, low 48°.

Pressure30.03 inHg

Wind13.3 mph NW

Humidity46%

Visibility—

Dew point39°

Fri, 3062° / 44°

62 °

St. David, Friday, 30 October

Clear. High 62°, low 44°.

Pressure30.06 inHg

Wind15.5 mph S

Humidity38%

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. 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.