As of 18:38 CDT

Weather in St. Charles, IA

64°Current weather

St. Charles, Tuesday, 20 October, 18:38

Clear. Feels like 63°. High 70°, low 42°.

Pressure30.21 inHg
Wind5.3 mph S
Humidity62%
Visibility6.2 mi
Dew point50°
Wed, 2173° / 49°0Clear
73 °Clear

St. Charles, Wednesday, 21 October

Clear. High 73°, low 49°.

Pressure30.21 inHg
Wind5.5 mph SW
Humidity57%
Visibility6.2 mi
Dew point53°
Thu, 2273° / 49°0Clear
73 °Clear

St. Charles, Thursday, 22 October

Clear. High 73°, low 49°.

Pressure30.24 inHg
Wind3.7 mph SE
Humidity56%
Visibility6.2 mi
Dew point54°
Fri, 2373° / 53°0Overcast
73 °Overcast

St. Charles, Friday, 23 October

Overcast. High 73°, low 53°.

Pressure30.21 inHg
Wind10.4 mph SE
Humidity54%
Visibility6.2 mi
Dew point52°
Sat, 2474° / 58°0Mostly clear
74 °Mostly clear

St. Charles, Saturday, 24 October

Mostly clear. High 74°, low 58°.

Pressure30.21 inHg
Wind11.4 mph S
Humidity56%
Visibility6.2 mi
Dew point52°
Sun, 2575° / 57°0Partly cloudy
75 °Partly cloudy

St. Charles, Sunday, 25 October

Partly cloudy. High 75°, low 57°.

Pressure30.27 inHg
Wind7.9 mph S
Humidity55%
Visibility—
Dew point54°
Mon, 2661° / 41°0.43Rain
61 °Rain

St. Charles, Monday, 26 October

Rain. High 61°, low 41°.

Pressure30.24 inHg
Wind14.4 mph N
Humidity94%
Visibility—
Dew point49°
Tue, 2741° / 38°0.08Light rain
41 °Light rain

St. Charles, Tuesday, 27 October

Light rain. High 41°, low 38°.

Pressure30.45 inHg
Wind15.1 mph N
Humidity83%
Visibility—
Dew point36°
Wed, 2847° / 31°0Light rain
47 °Light rain

St. Charles, Wednesday, 28 October

Light rain. High 47°, low 31°.

Pressure30.36 inHg
Wind12 mph NW
Humidity57%
Visibility—
Dew point28°
Thu, 2947° / 35°0Clear
47 °Clear

St. Charles, Thursday, 29 October

Clear. High 47°, low 35°.

Pressure30.36 inHg
Wind11.3 mph N
Humidity42%
Visibility—
Dew point23°
Fri, 3053° / 32°0Overcast
53 °Overcast

St. Charles, Friday, 30 October

Overcast. High 53°, low 32°.

Pressure30.12 inHg
Wind16.4 mph S
Humidity53%
Visibility—
Dew point31°
Sat, 3153° / 46°0.28Light rain
53 °Light rain

St. Charles, Saturday, 31 October

Light rain. High 53°, low 46°.

Pressure29.77 inHg
Wind19.1 mph S
Humidity89%
Visibility—
Dew point43°
Sun, 0161° / 48°0.01Light rain
61 °Light rain

St. Charles, Sunday, 1 November

Light rain. High 61°, low 48°.

Pressure29.62 inHg
Wind17.6 mph SW
Humidity82%
Visibility—
Dew point52°
Mon, 0251° / 40°0Clear
51 °Clear

St. Charles, Monday, 2 November

Clear. High 51°, low 40°.

Pressure30.33 inHg
Wind15.2 mph N
Humidity33%
Visibility—
Dew point22°
Tue, 0354° / 36°0Clear
54 °Clear

St. Charles, Tuesday, 3 November

Clear. High 54°, low 36°.

Pressure30.42 inHg
Wind13.3 mph S
Humidity35%
Visibility—
Dew point24°
Wed, 0453° / 40°0Overcast
53 °Overcast

St. Charles, Wednesday, 4 November

Overcast. High 53°, low 40°.

Pressure30.36 inHg
Wind10.1 mph NE
Humidity56%
Visibility—
Dew point35°

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. Charles, IA 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. Charles, IA 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.