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As of 01:59 CDT

Weather in St. Peter, IL

66°Current weather

St. Peter, Monday, 12 October, 01:59

Clear. Feels like 66°. High 90°, low 63°.

Pressure29.97 inHg
Wind8.2 mph SW
Humidity80%
Visibility6.2 mi
Dew point60°
Tue, 1389° / 65°0Clear
89 °Clear

St. Peter, Tuesday, 13 October

Clear. High 89°, low 65°.

Pressure29.91 inHg
Wind9.7 mph SW
Humidity51%
Visibility6.2 mi
Dew point64°
Wed, 1483° / 70°0.16Rain
83 °Rain

St. Peter, Wednesday, 14 October

Rain. High 83°, low 70°.

Pressure30.00 inHg
Wind3.4 mph SW
Humidity68%
Visibility6.2 mi
Dew point69°
Thu, 1578° / 70°0.48Rain
78 °Rain

St. Peter, Thursday, 15 October

Rain. High 78°, low 70°.

Pressure30.03 inHg
Wind9 mph SW
Humidity89%
Visibility5.9 mi
Dew point73°
Fri, 1671° / 53°0.03Light rain
71 °Light rain

St. Peter, Friday, 16 October

Light rain. High 71°, low 53°.

Pressure30.36 inHg
Wind18.1 mph NW
Humidity43%
Visibility—
Dew point37°
Sat, 1759° / 43°0Clear
59 °Clear

St. Peter, Saturday, 17 October

Clear. High 59°, low 43°.

Pressure30.50 inHg
Wind7.7 mph SE
Humidity42%
Visibility—
Dew point34°
Sun, 1865° / 36°0Clear
65 °Clear

St. Peter, Sunday, 18 October

Clear. High 65°, low 36°.

Pressure30.45 inHg
Wind11.7 mph S
Humidity20%
Visibility—
Dew point17°
Mon, 1971° / 47°0Overcast
71 °Overcast

St. Peter, Monday, 19 October

Overcast. High 71°, low 47°.

Pressure30.36 inHg
Wind13.1 mph S
Humidity40%
Visibility—
Dew point41°
Tue, 2077° / 55°0Overcast
77 °Overcast

St. Peter, Tuesday, 20 October

Overcast. High 77°, low 55°.

Pressure30.18 inHg
Wind12.1 mph S
Humidity49%
Visibility—
Dew point52°
Wed, 2180° / 61°0Light rain
80 °Light rain

St. Peter, Wednesday, 21 October

Light rain. High 80°, low 61°.

Pressure30.03 inHg
Wind18.1 mph S
Humidity47%
Visibility—
Dew point56°
Thu, 2270° / 54°0.51Rain
70 °Rain

St. Peter, Thursday, 22 October

Rain. High 70°, low 54°.

Pressure29.85 inHg
Wind21.8 mph S
Humidity54%
Visibility—
Dew point47°
Fri, 2357° / 46°0Clear
57 °Clear

St. Peter, Friday, 23 October

Clear. High 57°, low 46°.

Pressure30.03 inHg
Wind18.2 mph NW
Humidity38%
Visibility—
Dew point30°
Sat, 2458° / 38°0Mostly clear
58 °Mostly clear

St. Peter, Saturday, 24 October

Mostly clear. High 58°, low 38°.

Pressure30.15 inHg
Wind7.3 mph NW
Humidity34%
Visibility—
Dew point25°
Sun, 2566° / 49°0Overcast
66 °Overcast

St. Peter, Sunday, 25 October

Overcast. High 66°, low 49°.

Pressure29.74 inHg
Wind16.4 mph S
Humidity33%
Visibility—
Dew point33°
Mon, 2662° / 46°0Overcast
62 °Overcast

St. Peter, Monday, 26 October

Overcast. High 62°, low 46°.

Pressure29.97 inHg
Wind11.2 mph N
Humidity50%
Visibility—
Dew point40°
Tue, 2760° / 46°0Clear
60 °Clear

St. Peter, Tuesday, 27 October

Clear. High 60°, low 46°.

Pressure30.03 inHg
Wind13 mph NW
Humidity40%
Visibility—
Dew point34°

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.