As of 00:24 CDT

Weather in St. David, IL

46°

St. David, Monday, 19 October, 00:24

Clear. Feels like 43°. High 68°, low 41°.

Pressure30.36 inHg

Wind6 mph S

Humidity77%

Visibility6.2 mi

Dew point40°

See detailed hourly forecast

Tue, 2068° / 43°

68 °

St. David, Tuesday, 20 October

Clear. High 68°, low 43°.

Pressure30.36 inHg

Wind4.2 mph SE

Humidity49%

Visibility6.2 mi

Dew point45°

Wed, 2169° / 47°

69 °

St. David, Wednesday, 21 October

Clear. High 69°, low 47°.

Pressure30.30 inHg

Wind1.5 mph SW

Humidity53%

Visibility6.2 mi

Dew point49°

Thu, 2270° / 49°

70 °

St. David, Thursday, 22 October

Mostly clear. High 70°, low 49°.

Pressure30.33 inHg

Wind2.8 mph E

Humidity57%

Visibility6.2 mi

Dew point51°

Fri, 2367° / 49°

67 °

St. David, Friday, 23 October

Clear. High 67°, low 49°.

Pressure30.33 inHg

Wind7.2 mph SE

Humidity53%

Visibility—

Dew point46°

Sat, 2472° / 49°

72 °

St. David, Saturday, 24 October

Overcast. High 72°, low 49°.

Pressure30.33 inHg

Wind11.1 mph S

Humidity47%

Visibility—

Dew point45°

Sun, 2565° / 52°

65 °

St. David, Sunday, 25 October

Partly cloudy. High 65°, low 52°.

Pressure30.33 inHg

Wind12.1 mph SW

Humidity23%

Visibility—

Dew point25°

Mon, 2663° / 50°

63 °

St. David, Monday, 26 October

Overcast. High 63°, low 50°.

Pressure30.18 inHg

Wind15.1 mph S

Humidity42%

Visibility—

Dew point38°

Tue, 2764° / 55°

0.03

64 °

St. David, Tuesday, 27 October

Light rain. High 64°, low 55°.

Pressure30.12 inHg

Wind12.2 mph SW

Humidity64%

Visibility—

Dew point49°

Wed, 2856° / 55°

0.25

56 °

St. David, Wednesday, 28 October

Light rain. High 56°, low 55°.

Pressure30.15 inHg

Wind6.7 mph SE

Humidity91%

Visibility—

Dew point53°

Thu, 2969° / 54°

0.14

69 °

St. David, Thursday, 29 October

Light rain. High 69°, low 54°.

Pressure29.97 inHg

Wind13.3 mph S

Humidity87%

Visibility—

Dew point55°

Fri, 3071° / 56°

0.1

71 °

St. David, Friday, 30 October

Light rain. High 71°, low 56°.

Pressure29.80 inHg

Wind18.7 mph SW

Humidity73%

Visibility—

Dew point62°

Sat, 3163° / 53°

63 °

St. David, Saturday, 31 October

Overcast. High 63°, low 53°.

Pressure30.03 inHg

Wind12.4 mph SE

Humidity30%

Visibility—

Dew point30°

Sun, 0162° / 42°

0.16

62 °

St. David, Sunday, 1 November

Light rain. High 62°, low 42°.

Pressure29.91 inHg

Wind27 mph NW

Humidity48%

Visibility—

Dew point33°

Mon, 0261° / 42°

61 °

St. David, Monday, 2 November

Mostly clear. High 61°, low 42°.

Pressure30.03 inHg

Wind10.5 mph W

Humidity32%

Visibility—

Dew point26°

Tue, 0353° / 49°

0.39

53 °

St. David, Tuesday, 3 November

Rain. High 53°, low 49°.

Pressure29.91 inHg

Wind14.8 mph S

Humidity89%

Visibility—

Dew point46°

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.