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As of 08:40 CST

Weather in Jamestown, IL

58°Current weather

Jamestown, Wednesday, 11 November, 08:40

Clear. Feels like 57°. High 69°, low 44°.

Pressure29.85 inHg
Wind6.5 mph S
Humidity81%
Visibility6.2 mi
Dew point52°
Thu, 1254° / 38°0Overcast
54 °Overcast

Jamestown, Thursday, 12 November

Overcast. High 54°, low 38°.

Pressure29.97 inHg
Wind14.1 mph NW
Humidity53%
Visibility6.2 mi
Dew point32°
Fri, 1344° / 35°0Overcast
44 °Overcast

Jamestown, Friday, 13 November

Overcast. High 44°, low 35°.

Pressure30.09 inHg
Wind12.2 mph NW
Humidity59%
Visibility6.2 mi
Dew point25°
Sat, 1446° / 30°0Clear
46 °Clear

Jamestown, Saturday, 14 November

Clear. High 46°, low 30°.

Pressure30.30 inHg
Wind4.6 mph N
Humidity56%
Visibility6.2 mi
Dew point25°
Sun, 1550° / 30°0Overcast
50 °Overcast

Jamestown, Sunday, 15 November

Overcast. High 50°, low 30°.

Pressure30.39 inHg
Wind4.5 mph E
Humidity51%
Visibility—
Dew point29°
Mon, 1648° / 37°0Overcast
48 °Overcast

Jamestown, Monday, 16 November

Overcast. High 48°, low 37°.

Pressure30.47 inHg
Wind5.8 mph E
Humidity59%
Visibility—
Dew point31°
Tue, 1754° / 34°0Clear
54 °Clear

Jamestown, Tuesday, 17 November

Clear. High 54°, low 34°.

Pressure30.36 inHg
Wind6.8 mph NE
Humidity37%
Visibility—
Dew point24°
Wed, 1854° / 33°0Mostly clear
54 °Mostly clear

Jamestown, Wednesday, 18 November

Mostly clear. High 54°, low 33°.

Pressure30.27 inHg
Wind7.7 mph SE
Humidity38%
Visibility—
Dew point25°
Thu, 1961° / 35°0.01Light rain
61 °Light rain

Jamestown, Thursday, 19 November

Light rain. High 61°, low 35°.

Pressure30.00 inHg
Wind14.4 mph S
Humidity38%
Visibility—
Dew point25°
Fri, 2065° / 45°0.18Rain
65 °Rain

Jamestown, Friday, 20 November

Rain. High 65°, low 45°.

Pressure29.91 inHg
Wind15 mph S
Humidity43%
Visibility—
Dew point37°
Sat, 2162° / 41°0.13Light rain
62 °Light rain

Jamestown, Saturday, 21 November

Light rain. High 62°, low 41°.

Pressure29.85 inHg
Wind18.5 mph SW
Humidity66%
Visibility—
Dew point43°
Sun, 2244° / 33°0Mostly clear
44 °Mostly clear

Jamestown, Sunday, 22 November

Mostly clear. High 44°, low 33°.

Pressure30.24 inHg
Wind15.5 mph NW
Humidity52%
Visibility—
Dew point24°
Mon, 2348° / 32°0Clear
48 °Clear

Jamestown, Monday, 23 November

Clear. High 48°, low 32°.

Pressure30.30 inHg
Wind4.6 mph W
Humidity42%
Visibility—
Dew point23°
Tue, 2454° / 34°0Clear
54 °Clear

Jamestown, Tuesday, 24 November

Clear. High 54°, low 34°.

Pressure30.30 inHg
Wind11 mph SW
Humidity32%
Visibility—
Dew point20°
Wed, 2556° / 38°0Overcast
56 °Overcast

Jamestown, Wednesday, 25 November

Overcast. High 56°, low 38°.

Pressure30.09 inHg
Wind14.8 mph S
Humidity36%
Visibility—
Dew point25°
Thu, 2649° / 40°0Overcast
49 °Overcast

Jamestown, Thursday, 26 November

Overcast. High 49°, low 40°.

Pressure30.09 inHg
Wind13.4 mph NW
Humidity78%
Visibility—
Dew point36°

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 Jamestown, 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 Jamestown, 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.