As of 09:34 CDT

Weather in St. Charles, IA

50°Current weather

St. Charles, Sunday, 18 October, 09:34

Clear. Feels like 45°. High 64°, low 41°.

Pressure30.33 inHg
Wind12.2 mph S
Humidity75%
Visibility6.2 mi
Dew point42°
Mon, 1964° / 43°0Mostly clear
64 °Mostly clear

St. Charles, Monday, 19 October

Mostly clear. High 64°, low 43°.

Pressure30.33 inHg
Wind7.9 mph S
Humidity60%
Visibility6.2 mi
Dew point47°
Tue, 2067° / 43°0Clear
67 °Clear

St. Charles, Tuesday, 20 October

Clear. High 67°, low 43°.

Pressure30.33 inHg
Wind7.4 mph S
Humidity55%
Visibility6.2 mi
Dew point47°
Wed, 2170° / 49°0Clear
70 °Clear

St. Charles, Wednesday, 21 October

Clear. High 70°, low 49°.

Pressure30.24 inHg
Wind5 mph S
Humidity61%
Visibility6.2 mi
Dew point53°
Thu, 2270° / 49°0Clear
70 °Clear

St. Charles, Thursday, 22 October

Clear. High 70°, low 49°.

Pressure30.27 inHg
Wind7.7 mph SE
Humidity52%
Visibility—
Dew point48°
Fri, 2370° / 53°0Overcast
70 °Overcast

St. Charles, Friday, 23 October

Overcast. High 70°, low 53°.

Pressure30.18 inHg
Wind14.3 mph SE
Humidity55%
Visibility—
Dew point49°
Sat, 2473° / 55°0.26Rain
73 °Rain

St. Charles, Saturday, 24 October

Rain. High 73°, low 55°.

Pressure30.12 inHg
Wind16.5 mph SW
Humidity51%
Visibility—
Dew point52°
Sun, 2554° / 47°0Overcast
54 °Overcast

St. Charles, Sunday, 25 October

Overcast. High 54°, low 47°.

Pressure30.47 inHg
Wind9 mph NE
Humidity49%
Visibility—
Dew point34°
Mon, 2661° / 46°0.35Rain
61 °Rain

St. Charles, Monday, 26 October

Rain. High 61°, low 46°.

Pressure30.24 inHg
Wind7 mph SE
Humidity90%
Visibility—
Dew point49°
Tue, 2763° / 54°0.01Light rain
63 °Light rain

St. Charles, Tuesday, 27 October

Light rain. High 63°, low 54°.

Pressure30.15 inHg
Wind10 mph SE
Humidity57%
Visibility—
Dew point47°
Wed, 2863° / 52°0.15Light rain
63 °Light rain

St. Charles, Wednesday, 28 October

Light rain. High 63°, low 52°.

Pressure29.85 inHg
Wind13.6 mph S
Humidity91%
Visibility—
Dew point55°
Thu, 2966° / 52°0Clear
66 °Clear

St. Charles, Thursday, 29 October

Clear. High 66°, low 52°.

Pressure29.80 inHg
Wind7.4 mph NW
Humidity44%
Visibility—
Dew point41°
Fri, 3072° / 51°0Overcast
72 °Overcast

St. Charles, Friday, 30 October

Overcast. High 72°, low 51°.

Pressure29.50 inHg
Wind18.9 mph S
Humidity68%
Visibility—
Dew point56°
Sat, 3145° / 38°0Overcast
45 °Overcast

St. Charles, Saturday, 31 October

Overcast. High 45°, low 38°.

Pressure29.68 inHg
Wind25.4 mph W
Humidity54%
Visibility—
Dew point28°
Sun, 0150° / 33°0Clear
50 °Clear

St. Charles, Sunday, 1 November

Clear. High 50°, low 33°.

Pressure30.27 inHg
Wind16 mph W
Humidity45%
Visibility—
Dew point25°
Mon, 0259° / 38°0Overcast
59 °Overcast

St. Charles, Monday, 2 November

Overcast. High 59°, low 38°.

Pressure30.21 inHg
Wind19.3 mph S
Humidity42%
Visibility—
Dew point32°

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.