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As of 10:18 CDT

Weather in St. Charles, IA

58°Current weather

St. Charles, Thursday, 15 October, 10:18

Overcast. Feels like 59°. High 58°, low 52°.

Pressure29.97 inHg
Wind2.1 mph N
Humidity99%
Visibility2.0 mi
Dew point58°
Fri, 1653° / 41°0Overcast
53 °Overcast

St. Charles, Friday, 16 October

Overcast. High 53°, low 41°.

Pressure30.45 inHg
Wind22.7 mph N
Humidity55%
Visibility6.2 mi
Dew point35°
Sat, 1758° / 35°0Clear
58 °Clear

St. Charles, Saturday, 17 October

Clear. High 58°, low 35°.

Pressure30.53 inHg
Wind10 mph SW
Humidity44%
Visibility6.2 mi
Dew point33°
Sun, 1863° / 43°0Clear
63 °Clear

St. Charles, Sunday, 18 October

Clear. High 63°, low 43°.

Pressure30.30 inHg
Wind14.2 mph S
Humidity57%
Visibility6.2 mi
Dew point43°
Mon, 1961° / 48°0.08Light rain
61 °Light rain

St. Charles, Monday, 19 October

Light rain. High 61°, low 48°.

Pressure30.24 inHg
Wind10.9 mph S
Humidity58%
Visibility—
Dew point44°
Tue, 2066° / 48°0Clear
66 °Clear

St. Charles, Tuesday, 20 October

Clear. High 66°, low 48°.

Pressure30.21 inHg
Wind9.2 mph S
Humidity58%
Visibility—
Dew point48°
Wed, 2172° / 53°0Clear
72 °Clear

St. Charles, Wednesday, 21 October

Clear. High 72°, low 53°.

Pressure30.24 inHg
Wind12.4 mph S
Humidity56%
Visibility—
Dew point52°
Thu, 2272° / 60°0.09Light rain
72 °Light rain

St. Charles, Thursday, 22 October

Light rain. High 72°, low 60°.

Pressure30.09 inHg
Wind13.7 mph S
Humidity76%
Visibility—
Dew point56°
Fri, 2371° / 62°0Overcast
71 °Overcast

St. Charles, Friday, 23 October

Overcast. High 71°, low 62°.

Pressure30.00 inHg
Wind17.8 mph S
Humidity51%
Visibility—
Dew point51°
Sat, 2463° / 51°0.03Light rain
63 °Light rain

St. Charles, Saturday, 24 October

Light rain. High 63°, low 51°.

Pressure30.09 inHg
Wind20 mph S
Humidity76%
Visibility—
Dew point51°
Sun, 2563° / 46°0Clear
63 °Clear

St. Charles, Sunday, 25 October

Clear. High 63°, low 46°.

Pressure30.53 inHg
Wind8.2 mph SE
Humidity42%
Visibility—
Dew point37°
Mon, 2660° / 44°0.23Rain
60 °Rain

St. Charles, Monday, 26 October

Rain. High 60°, low 44°.

Pressure30.33 inHg
Wind15.8 mph S
Humidity62%
Visibility—
Dew point43°
Tue, 2762° / 59°0.21Light rain
62 °Light rain

St. Charles, Tuesday, 27 October

Light rain. High 62°, low 59°.

Pressure30.06 inHg
Wind15.9 mph S
Humidity77%
Visibility—
Dew point54°
Wed, 2866° / 54°0.17Light rain
66 °Light rain

St. Charles, Wednesday, 28 October

Light rain. High 66°, low 54°.

Pressure29.85 inHg
Wind19.7 mph S
Humidity86%
Visibility—
Dew point59°
Thu, 2968° / 53°0.07Light rain
68 °Light rain

St. Charles, Thursday, 29 October

Light rain. High 68°, low 53°.

Pressure29.83 inHg
Wind10.7 mph SW
Humidity74%
Visibility—
Dew point58°
Fri, 3062° / 45°0.03Light rain
62 °Light rain

St. Charles, Friday, 30 October

Light rain. High 62°, low 45°.

Pressure29.71 inHg
Wind25.3 mph W
Humidity86%
Visibility—
Dew point57°

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.