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As of 13:29 CDT

Weather in St. David, IL

84°Current weather

St. David, Saturday, 8 August, 13:29

Partly cloudy. Feels like 90°. High 85°, low 70°.

Pressure30.06 inHg
Wind7.3 mph N
Humidity69%
Visibility6.2 mi
Dew point71°
Sun, 0995° / 69°0Overcast
95 °Overcast

St. David, Sunday, 9 August

Overcast. High 95°, low 69°.

Pressure29.88 inHg
Wind16.1 mph SW
Humidity48%
Visibility6.2 mi
Dew point70°
Mon, 1098° / 76°0Overcast
98 °Overcast

St. David, Monday, 10 August

Overcast. High 98°, low 76°.

Pressure29.88 inHg
Wind13.1 mph W
Humidity45%
Visibility6.2 mi
Dew point68°
Tue, 1195° / 73°0.02Light rain
95 °Light rain

St. David, Tuesday, 11 August

Light rain. High 95°, low 73°.

Pressure29.80 inHg
Wind16.8 mph SW
Humidity36%
Visibility6.2 mi
Dew point64°
Wed, 1286° / 71°0.27Rain
86 °Rain

St. David, Wednesday, 12 August

Rain. High 86°, low 71°.

Pressure29.85 inHg
Wind4.4 mph SW
Humidity75%
Visibility6.2 mi
Dew point69°
Thu, 1373° / 61°0.5Rain
73 °Rain

St. David, Thursday, 13 August

Rain. High 73°, low 61°.

Pressure29.91 inHg
Wind12.8 mph N
Humidity96%
Visibility—
Dew point65°
Fri, 1478° / 56°0Clear
78 °Clear

St. David, Friday, 14 August

Clear. High 78°, low 56°.

Pressure30.18 inHg
Wind5.8 mph N
Humidity43%
Visibility—
Dew point50°
Sat, 1581° / 58°0Overcast
81 °Overcast

St. David, Saturday, 15 August

Overcast. High 81°, low 58°.

Pressure30.18 inHg
Wind9.2 mph SE
Humidity48%
Visibility—
Dew point55°
Sun, 1667° / 63°0.15Light rain
67 °Light rain

St. David, Sunday, 16 August

Light rain. High 67°, low 63°.

Pressure30.09 inHg
Wind10.7 mph E
Humidity98%
Visibility—
Dew point64°
Mon, 1778° / 66°0.02Light rain
78 °Light rain

St. David, Monday, 17 August

Light rain. High 78°, low 66°.

Pressure29.97 inHg
Wind8.2 mph E
Humidity91%
Visibility—
Dew point67°
Tue, 1888° / 67°0.01Light rain
88 °Light rain

St. David, Tuesday, 18 August

Light rain. High 88°, low 67°.

Pressure29.88 inHg
Wind11.6 mph W
Humidity59%
Visibility—
Dew point68°
Wed, 1980° / 63°0.01Light rain
80 °Light rain

St. David, Wednesday, 19 August

Light rain. High 80°, low 63°.

Pressure29.97 inHg
Wind15.5 mph NE
Humidity62%
Visibility—
Dew point64°
Thu, 2072° / 51°0Partly cloudy
72 °Partly cloudy

St. David, Thursday, 20 August

Partly cloudy. High 72°, low 51°.

Pressure30.24 inHg
Wind12.6 mph N
Humidity45%
Visibility—
Dew point45°
Fri, 2175° / 50°0Clear
75 °Clear

St. David, Friday, 21 August

Clear. High 75°, low 50°.

Pressure30.24 inHg
Wind6.1 mph NE
Humidity36%
Visibility—
Dew point41°
Sat, 2280° / 52°0Clear
80 °Clear

St. David, Saturday, 22 August

Clear. High 80°, low 52°.

Pressure30.15 inHg
Wind6.4 mph S
Humidity36%
Visibility—
Dew point45°
Sun, 2383° / 55°0Clear
83 °Clear

St. David, Sunday, 23 August

Clear. High 83°, low 55°.

Pressure30.09 inHg
Wind9.1 mph SE
Humidity33%
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.