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As of 08:19 CDT

Weather in Jamestown, IL

44°Current weather

Jamestown, Monday, 19 October, 08:19

Clear. Feels like 42°. High 69°, low 42°.

Pressure30.39 inHg
Wind3.6 mph SE
Humidity92%
Visibility6.2 mi
Dew point41°
Tue, 2072° / 43°0Clear
72 °Clear

Jamestown, Tuesday, 20 October

Clear. High 72°, low 43°.

Pressure30.36 inHg
Wind2.2 mph SE
Humidity52%
Visibility6.2 mi
Dew point48°
Wed, 2170° / 46°0Overcast
70 °Overcast

Jamestown, Wednesday, 21 October

Overcast. High 70°, low 46°.

Pressure30.30 inHg
Wind0.8 mph S
Humidity53%
Visibility6.2 mi
Dew point48°
Thu, 2271° / 49°0Clear
71 °Clear

Jamestown, Thursday, 22 October

Clear. High 71°, low 49°.

Pressure30.30 inHg
Wind5.8 mph NE
Humidity46%
Visibility6.2 mi
Dew point47°
Fri, 2368° / 49°0Clear
68 °Clear

Jamestown, Friday, 23 October

Clear. High 68°, low 49°.

Pressure30.30 inHg
Wind7.5 mph SE
Humidity52%
Visibility—
Dew point46°
Sat, 2467° / 49°0Overcast
67 °Overcast

Jamestown, Saturday, 24 October

Overcast. High 67°, low 49°.

Pressure30.39 inHg
Wind7.1 mph SE
Humidity47%
Visibility—
Dew point42°
Sun, 2577° / 54°0Overcast
77 °Overcast

Jamestown, Sunday, 25 October

Overcast. High 77°, low 54°.

Pressure30.33 inHg
Wind10 mph SW
Humidity25%
Visibility—
Dew point35°
Mon, 2674° / 59°0Overcast
74 °Overcast

Jamestown, Monday, 26 October

Overcast. High 74°, low 59°.

Pressure30.21 inHg
Wind9.8 mph S
Humidity32%
Visibility—
Dew point40°
Tue, 2771° / 47°0.16Rain
71 °Rain

Jamestown, Tuesday, 27 October

Rain. High 71°, low 47°.

Pressure30.00 inHg
Wind17.5 mph NW
Humidity33%
Visibility—
Dew point39°
Wed, 2848° / 35°0Light rain
48 °Light rain

Jamestown, Wednesday, 28 October

Light rain. High 48°, low 35°.

Pressure30.36 inHg
Wind18.3 mph NW
Humidity25%
Visibility—
Dew point11°
Thu, 2954° / 30°0Mostly clear
54 °Mostly clear

Jamestown, Thursday, 29 October

Mostly clear. High 54°, low 30°.

Pressure30.30 inHg
Wind7.6 mph S
Humidity22%
Visibility—
Dew point11°
Fri, 3054° / 38°0.02Light rain
54 °Light rain

Jamestown, Friday, 30 October

Light rain. High 54°, low 38°.

Pressure30.06 inHg
Wind10.7 mph S
Humidity21%
Visibility—
Dew point11°
Sat, 3149° / 45°0.56Rain
49 °Rain

Jamestown, Saturday, 31 October

Rain. High 49°, low 45°.

Pressure30.12 inHg
Wind11.8 mph SW
Humidity86%
Visibility—
Dew point42°
Sun, 0166° / 47°0.11Light rain
66 °Light rain

Jamestown, Sunday, 1 November

Light rain. High 66°, low 47°.

Pressure29.97 inHg
Wind16.5 mph NW
Humidity66%
Visibility—
Dew point50°
Mon, 0254° / 40°0Overcast
54 °Overcast

Jamestown, Monday, 2 November

Overcast. High 54°, low 40°.

Pressure30.15 inHg
Wind15.7 mph NW
Humidity42%
Visibility—
Dew point28°
Tue, 0347° / 38°0.02Light rain
47 °Light rain

Jamestown, Tuesday, 3 November

Light rain. High 47°, low 38°.

Pressure30.03 inHg
Wind6.6 mph NW
Humidity70%
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 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.