As of 03:20 CDT

Weather in St. Peter, IL

72°

St. Peter, Tuesday, 13 October, 03:20

Clear. Feels like 72°. High 91°, low 69°.

Pressure29.88 inHg

Wind9.7 mph SW

Humidity75%

Visibility6.2 mi

Dew point63°

See detailed hourly forecast

Wed, 1483° / 67°

0.37

83 °

St. Peter, Wednesday, 14 October

Rain. High 83°, low 67°.

Pressure30.00 inHg

Wind4 mph S

Humidity77%

Visibility6.2 mi

Dew point71°

Thu, 1582° / 70°

0.31

82 °

St. Peter, Thursday, 15 October

Heavy rain. High 82°, low 70°.

Pressure30.00 inHg

Wind10.1 mph SW

Humidity92%

Visibility1.8 mi

Dew point73°

Fri, 1672° / 52°

0.07

72 °

St. Peter, Friday, 16 October

Light rain. High 72°, low 52°.

Pressure30.24 inHg

Wind21.6 mph NW

Humidity42%

Visibility6.2 mi

Dew point35°

Sat, 1760° / 43°

60 °

St. Peter, Saturday, 17 October

Clear. High 60°, low 43°.

Pressure30.50 inHg

Wind10.7 mph N

Humidity48%

Visibility—

Dew point37°

Sun, 1867° / 43°

67 °

St. Peter, Sunday, 18 October

Mostly clear. High 67°, low 43°.

Pressure30.30 inHg

Wind8.8 mph S

Humidity37%

Visibility—

Dew point34°

Mon, 1971° / 50°

71 °

St. Peter, Monday, 19 October

Overcast. High 71°, low 50°.

Pressure30.24 inHg

Wind10.5 mph S

Humidity46%

Visibility—

Dew point47°

Tue, 2073° / 60°

0.02

73 °

St. Peter, Tuesday, 20 October

Light rain. High 73°, low 60°.

Pressure30.15 inHg

Wind10.4 mph SE

Humidity60%

Visibility—

Dew point57°

Wed, 2172° / 60°

72 °

St. Peter, Wednesday, 21 October

Overcast. High 72°, low 60°.

Pressure30.18 inHg

Wind12.7 mph SE

Humidity61%

Visibility—

Dew point54°

Thu, 2281° / 61°

81 °

St. Peter, Thursday, 22 October

Overcast. High 81°, low 61°.

Pressure30.06 inHg

Wind21.2 mph S

Humidity42%

Visibility—

Dew point53°

Fri, 2370° / 56°

0.21

70 °

St. Peter, Friday, 23 October

Rain. High 70°, low 56°.

Pressure30.09 inHg

Wind21.7 mph S

Humidity71%

Visibility—

Dew point55°

Sat, 2466° / 49°

66 °

St. Peter, Saturday, 24 October

Overcast. High 66°, low 49°.

Pressure30.33 inHg

Wind10 mph N

Humidity39%

Visibility—

Dew point38°

Sun, 2560° / 46°

60 °

St. Peter, Sunday, 25 October

Overcast. High 60°, low 46°.

Pressure30.27 inHg

Wind13.9 mph NW

Humidity33%

Visibility—

Dew point30°

Mon, 2656° / 42°

56 °

St. Peter, Monday, 26 October

Overcast. High 56°, low 42°.

Pressure30.12 inHg

Wind9.9 mph W

Humidity46%

Visibility—

Dew point34°

Tue, 2767° / 42°

0.01

67 °

St. Peter, Tuesday, 27 October

Light rain. High 67°, low 42°.

Pressure29.71 inHg

Wind17.3 mph W

Humidity41%

Visibility—

Dew point37°

Wed, 2859° / 45°

59 °

St. Peter, Wednesday, 28 October

Clear. High 59°, low 45°.

Pressure29.85 inHg

Wind15.1 mph NW

Humidity36%

Visibility—

Dew point30°

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.