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As of 06:01 CDT

Weather in St. Peter, IL

52°Current weather

St. Peter, Sunday, 11 October, 06:01

Clear. Feels like 51°. High 82°, low 52°.

Pressure29.97 inHg
Wind3.8 mph NE
Humidity92%
Visibility6.2 mi
Dew point50°
Mon, 1290° / 60°0Clear
90 °Clear

St. Peter, Monday, 12 October

Clear. High 90°, low 60°.

Pressure29.94 inHg
Wind10.2 mph SW
Humidity47%
Visibility6.2 mi
Dew point60°
Tue, 1389° / 68°0Clear
89 °Clear

St. Peter, Tuesday, 13 October

Clear. High 89°, low 68°.

Pressure29.91 inHg
Wind9.8 mph SW
Humidity51%
Visibility6.2 mi
Dew point64°
Wed, 1483° / 71°0.23Rain
83 °Rain

St. Peter, Wednesday, 14 October

Rain. High 83°, low 71°.

Pressure30.00 inHg
Wind7.7 mph SW
Humidity79%
Visibility6.2 mi
Dew point70°
Thu, 1579° / 65°0.83Rain
79 °Rain

St. Peter, Thursday, 15 October

Rain. High 79°, low 65°.

Pressure30.06 inHg
Wind9.8 mph NE
Humidity94%
Visibility—
Dew point70°
Fri, 1670° / 46°0.4Rain
70 °Rain

St. Peter, Friday, 16 October

Rain. High 70°, low 46°.

Pressure30.33 inHg
Wind17.4 mph N
Humidity50%
Visibility—
Dew point45°
Sat, 1744° / 33°0Overcast
44 °Overcast

St. Peter, Saturday, 17 October

Overcast. High 44°, low 33°.

Pressure30.39 inHg
Wind21.6 mph NW
Humidity39%
Visibility—
Dew point18°
Sun, 1850° / 29°0Clear
50 °Clear

St. Peter, Sunday, 18 October

Clear. High 50°, low 29°.

Pressure30.56 inHg
Wind8.7 mph NW
Humidity30%
Visibility—
Dew point16°
Mon, 1960° / 35°0Mostly clear
60 °Mostly clear

St. Peter, Monday, 19 October

Mostly clear. High 60°, low 35°.

Pressure30.39 inHg
Wind13.5 mph SW
Humidity27%
Visibility—
Dew point21°
Tue, 2068° / 41°0Clear
68 °Clear

St. Peter, Tuesday, 20 October

Clear. High 68°, low 41°.

Pressure30.27 inHg
Wind12.7 mph S
Humidity22%
Visibility—
Dew point22°
Wed, 2170° / 45°0Overcast
70 °Overcast

St. Peter, Wednesday, 21 October

Overcast. High 70°, low 45°.

Pressure30.27 inHg
Wind12.7 mph S
Humidity28%
Visibility—
Dew point30°
Thu, 2267° / 52°0Overcast
67 °Overcast

St. Peter, Thursday, 22 October

Overcast. High 67°, low 52°.

Pressure30.33 inHg
Wind7.4 mph SW
Humidity46%
Visibility—
Dew point43°
Fri, 2373° / 51°0Clear
73 °Clear

St. Peter, Friday, 23 October

Clear. High 73°, low 51°.

Pressure30.30 inHg
Wind9.6 mph E
Humidity39%
Visibility—
Dew point42°
Sat, 2470° / 51°0Overcast
70 °Overcast

St. Peter, Saturday, 24 October

Overcast. High 70°, low 51°.

Pressure30.12 inHg
Wind16 mph NW
Humidity53%
Visibility—
Dew point50°
Sun, 2557° / 40°0Clear
57 °Clear

St. Peter, Sunday, 25 October

Clear. High 57°, low 40°.

Pressure30.39 inHg
Wind8.8 mph N
Humidity38%
Visibility—
Dew point29°
Mon, 2664° / 40°0Clear
64 °Clear

St. Peter, Monday, 26 October

Clear. High 64°, low 40°.

Pressure30.12 inHg
Wind12.6 mph W
Humidity36%
Visibility—
Dew point31°

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. Peter, 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. Peter, 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.