As of 01:18 CDT

Weather in St. David, IL

53°

St. David, Friday, 16 October, 01:18

Overcast. Feels like 52°. High 55°, low 47°.

Pressure30.00 inHg

Wind16.5 mph NW

Humidity87%

Visibility6.2 mi

Dew point49°

See detailed hourly forecast

Sat, 1757° / 38°

57 °

St. David, Saturday, 17 October

Clear. High 57°, low 38°.

Pressure30.59 inHg

Wind0.9 mph SW

Humidity45%

Visibility6.2 mi

Dew point29°

Sun, 1862° / 42°

62 °

St. David, Sunday, 18 October

Clear. High 62°, low 42°.

Pressure30.47 inHg

Wind11.1 mph S

Humidity50%

Visibility6.2 mi

Dew point40°

Mon, 1965° / 43°

65 °

St. David, Monday, 19 October

Clear. High 65°, low 43°.

Pressure30.36 inHg

Wind6.3 mph S

Humidity55%

Visibility6.2 mi

Dew point44°

Tue, 2068° / 47°

0.01

68 °

St. David, Tuesday, 20 October

Light rain. High 68°, low 47°.

Pressure30.33 inHg

Wind6 mph S

Humidity47%

Visibility—

Dew point43°

Wed, 2170° / 52°

70 °

St. David, Wednesday, 21 October

Partly cloudy. High 70°, low 52°.

Pressure30.30 inHg

Wind5.9 mph SE

Humidity47%

Visibility—

Dew point44°

Thu, 2276° / 54°

76 °

St. David, Thursday, 22 October

Partly cloudy. High 76°, low 54°.

Pressure30.24 inHg

Wind7.6 mph S

Humidity31%

Visibility—

Dew point38°

Fri, 2376° / 56°

76 °

St. David, Friday, 23 October

Partly cloudy. High 76°, low 56°.

Pressure30.15 inHg

Wind11.1 mph SE

Humidity28%

Visibility—

Dew point37°

Sat, 2477° / 58°

77 °

St. David, Saturday, 24 October

Overcast. High 77°, low 58°.

Pressure30.18 inHg

Wind9.4 mph S

Humidity30%

Visibility—

Dew point39°

Sun, 2573° / 55°

73 °

St. David, Sunday, 25 October

Overcast. High 73°, low 55°.

Pressure30.24 inHg

Wind7.8 mph E

Humidity34%

Visibility—

Dew point40°

Mon, 2673° / 58°

73 °

St. David, Monday, 26 October

Overcast. High 73°, low 58°.

Pressure30.00 inHg

Wind13 mph SE

Humidity30%

Visibility—

Dew point37°

Tue, 2763° / 45°

63 °

St. David, Tuesday, 27 October

Clear. High 63°, low 45°.

Pressure30.03 inHg

Wind11.7 mph W

Humidity55%

Visibility—

Dew point42°

Wed, 2856° / 48°

1.41

56 °

St. David, Wednesday, 28 October

Heavy rain. High 56°, low 48°.

Pressure29.62 inHg

Wind24 mph W

Humidity95%

Visibility—

Dew point54°

Thu, 2958° / 45°

0.08

58 °

St. David, Thursday, 29 October

Light rain. High 58°, low 45°.

Pressure29.94 inHg

Wind22.4 mph W

Humidity62%

Visibility—

Dew point43°

Fri, 3063° / 48°

63 °

St. David, Friday, 30 October

Mostly clear. High 63°, low 48°.

Pressure30.06 inHg

Wind9.1 mph NW

Humidity38%

Visibility—

Dew point35°

Sat, 3163° / 48°

63 °

St. David, Saturday, 31 October

Overcast. High 63°, low 48°.

Pressure29.94 inHg

Wind8.6 mph S

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. 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.