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As of 16:14 CDT

Weather in St. Augustine, IL

84°Current weather

St. Augustine, Saturday, 8 August, 16:14

Clear. Feels like 89°. High 84°, low 69°.

Pressure30.03 inHg
Wind2.1 mph NW
Humidity64%
Visibility6.2 mi
Dew point72°
Sun, 0991° / 68°0Overcast
91 °Overcast

St. Augustine, Sunday, 9 August

Overcast. High 91°, low 68°.

Pressure29.88 inHg
Wind13.8 mph SW
Humidity73%
Visibility6.2 mi
Dew point73°
Mon, 1092° / 74°0.01Light rain
92 °Light rain

St. Augustine, Monday, 10 August

Light rain. High 92°, low 74°.

Pressure29.85 inHg
Wind10.5 mph SW
Humidity62%
Visibility6.2 mi
Dew point72°
Tue, 1190° / 75°0.02Light rain
90 °Light rain

St. Augustine, Tuesday, 11 August

Light rain. High 90°, low 75°.

Pressure29.80 inHg
Wind13.5 mph SW
Humidity62%
Visibility6.2 mi
Dew point72°
Wed, 1281° / 70°0.01Light rain
81 °Light rain

St. Augustine, Wednesday, 12 August

Light rain. High 81°, low 70°.

Pressure29.85 inHg
Wind11.5 mph NE
Humidity72%
Visibility6.2 mi
Dew point71°
Thu, 1372° / 67°0.56Rain
72 °Rain

St. Augustine, Thursday, 13 August

Rain. High 72°, low 67°.

Pressure29.91 inHg
Wind10.1 mph NE
Humidity96%
Visibility—
Dew point69°
Fri, 1477° / 56°0Clear
77 °Clear

St. Augustine, Friday, 14 August

Clear. High 77°, low 56°.

Pressure30.18 inHg
Wind7.5 mph NE
Humidity57%
Visibility—
Dew point56°
Sat, 1577° / 57°0Overcast
77 °Overcast

St. Augustine, Saturday, 15 August

Overcast. High 77°, low 57°.

Pressure30.27 inHg
Wind7.9 mph SE
Humidity57%
Visibility—
Dew point56°
Sun, 1678° / 59°0.02Light rain
78 °Light rain

St. Augustine, Sunday, 16 August

Light rain. High 78°, low 59°.

Pressure30.15 inHg
Wind12.8 mph S
Humidity60%
Visibility—
Dew point60°
Mon, 1783° / 67°0Overcast
83 °Overcast

St. Augustine, Monday, 17 August

Overcast. High 83°, low 67°.

Pressure29.94 inHg
Wind8.5 mph SE
Humidity80%
Visibility—
Dew point71°
Tue, 1885° / 71°0.01Light rain
85 °Light rain

St. Augustine, Tuesday, 18 August

Light rain. High 85°, low 71°.

Pressure30.00 inHg
Wind7.3 mph SE
Humidity68%
Visibility—
Dew point71°
Wed, 1989° / 70°0.02Light rain
89 °Light rain

St. Augustine, Wednesday, 19 August

Light rain. High 89°, low 70°.

Pressure29.88 inHg
Wind7.5 mph S
Humidity58%
Visibility—
Dew point69°
Thu, 2081° / 67°1.05Heavy rain
81 °Heavy rain

St. Augustine, Thursday, 20 August

Heavy rain. High 81°, low 67°.

Pressure29.91 inHg
Wind8.9 mph N
Humidity66%
Visibility—
Dew point67°
Fri, 2181° / 64°0Clear
81 °Clear

St. Augustine, Friday, 21 August

Clear. High 81°, low 64°.

Pressure29.97 inHg
Wind8 mph NE
Humidity58%
Visibility—
Dew point61°
Sat, 2283° / 62°0Light rain
83 °Light rain

St. Augustine, Saturday, 22 August

Light rain. High 83°, low 62°.

Pressure29.91 inHg
Wind18.1 mph NE
Humidity59%
Visibility—
Dew point64°
Sun, 2370° / 50°0Partly cloudy
70 °Partly cloudy

St. Augustine, Sunday, 23 August

Partly cloudy. High 70°, low 50°.

Pressure30.21 inHg
Wind13.1 mph E
Humidity47%
Visibility—
Dew point45°

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. Augustine, 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. Augustine, 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.