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As of 02:53 CDT

Weather in Jamestown, IL

56°Current weather

Jamestown, Thursday, 22 October, 02:53

Clear. Feels like 55°. High 77°, low 49°.

Pressure30.21 inHg
Wind1.3 mph NW
Humidity82%
Visibility6.2 mi
Dew point51°
Fri, 2374° / 48°0Clear
74 °Clear

Jamestown, Friday, 23 October

Clear. High 74°, low 48°.

Pressure30.30 inHg
Wind5.9 mph SE
Humidity47%
Visibility6.2 mi
Dew point48°
Sat, 2472° / 50°0Overcast
72 °Overcast

Jamestown, Saturday, 24 October

Overcast. High 72°, low 50°.

Pressure30.36 inHg
Wind4.9 mph SE
Humidity50%
Visibility6.2 mi
Dew point49°
Sun, 2574° / 50°0Overcast
74 °Overcast

Jamestown, Sunday, 25 October

Overcast. High 74°, low 50°.

Pressure30.39 inHg
Wind3.4 mph SE
Humidity48%
Visibility6.2 mi
Dew point49°
Mon, 2673° / 52°0Overcast
73 °Overcast

Jamestown, Monday, 26 October

Overcast. High 73°, low 52°.

Pressure30.33 inHg
Wind4.8 mph E
Humidity40%
Visibility—
Dew point44°
Tue, 2772° / 51°0Overcast
72 °Overcast

Jamestown, Tuesday, 27 October

Overcast. High 72°, low 51°.

Pressure30.21 inHg
Wind12.4 mph W
Humidity39%
Visibility—
Dew point43°
Wed, 2856° / 43°0.07Light rain
56 °Light rain

Jamestown, Wednesday, 28 October

Light rain. High 56°, low 43°.

Pressure30.27 inHg
Wind15.1 mph NW
Humidity63%
Visibility—
Dew point39°
Thu, 2959° / 40°0.05Light rain
59 °Light rain

Jamestown, Thursday, 29 October

Light rain. High 59°, low 40°.

Pressure30.33 inHg
Wind11.2 mph N
Humidity34%
Visibility—
Dew point26°
Fri, 3065° / 40°0Partly cloudy
65 °Partly cloudy

Jamestown, Friday, 30 October

Partly cloudy. High 65°, low 40°.

Pressure30.21 inHg
Wind11.1 mph S
Humidity31%
Visibility—
Dew point28°
Sat, 3170° / 49°0Overcast
70 °Overcast

Jamestown, Saturday, 31 October

Overcast. High 70°, low 49°.

Pressure30.06 inHg
Wind18.9 mph S
Humidity42%
Visibility—
Dew point41°
Sun, 0163° / 53°0.49Rain
63 °Rain

Jamestown, Sunday, 1 November

Rain. High 63°, low 53°.

Pressure30.00 inHg
Wind16.7 mph S
Humidity91%
Visibility—
Dew point53°
Mon, 0261° / 45°0.09Light rain
61 °Light rain

Jamestown, Monday, 2 November

Light rain. High 61°, low 45°.

Pressure30.21 inHg
Wind20.4 mph NW
Humidity42%
Visibility—
Dew point37°
Tue, 0357° / 38°0Partly cloudy
57 °Partly cloudy

Jamestown, Tuesday, 3 November

Partly cloudy. High 57°, low 38°.

Pressure30.36 inHg
Wind9 mph NW
Humidity28%
Visibility—
Dew point20°
Wed, 0454° / 47°0.03Light rain
54 °Light rain

Jamestown, Wednesday, 4 November

Light rain. High 54°, low 47°.

Pressure29.94 inHg
Wind19.8 mph S
Humidity63%
Visibility—
Dew point42°
Thu, 0564° / 44°0.03Light rain
64 °Light rain

Jamestown, Thursday, 5 November

Light rain. High 64°, low 44°.

Pressure29.77 inHg
Wind19.2 mph SW
Humidity37%
Visibility—
Dew point36°
Fri, 0650° / 38°0Overcast
50 °Overcast

Jamestown, Friday, 6 November

Overcast. High 50°, low 38°.

Pressure30.09 inHg
Wind5.9 mph S
Humidity38%
Visibility—
Dew point24°

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.