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As of 00:43 CST

Weather in Jamestown, IL

45°Current weather

Jamestown, Thursday, 12 November, 00:43

Mostly clear. Feels like 42°. High 54°, low 37°.

Pressure29.88 inHg
Wind5.8 mph NW
Humidity84%
Visibility6.2 mi
Dew point40°
Fri, 1348° / 33°0Overcast
48 °Overcast

Jamestown, Friday, 13 November

Overcast. High 48°, low 33°.

Pressure30.09 inHg
Wind12.1 mph NW
Humidity59%
Visibility6.2 mi
Dew point24°
Sat, 1447° / 30°0Clear
47 °Clear

Jamestown, Saturday, 14 November

Clear. High 47°, low 30°.

Pressure30.33 inHg
Wind4.9 mph N
Humidity56%
Visibility6.2 mi
Dew point25°
Sun, 1550° / 29°0Partly cloudy
50 °Partly cloudy

Jamestown, Sunday, 15 November

Partly cloudy. High 50°, low 29°.

Pressure30.45 inHg
Wind0.2 mph W
Humidity51%
Visibility6.2 mi
Dew point28°
Mon, 1653° / 32°0Clear
53 °Clear

Jamestown, Monday, 16 November

Clear. High 53°, low 32°.

Pressure30.50 inHg
Wind5.6 mph S
Humidity46%
Visibility—
Dew point29°
Tue, 1756° / 34°0Partly cloudy
56 °Partly cloudy

Jamestown, Tuesday, 17 November

Partly cloudy. High 56°, low 34°.

Pressure30.45 inHg
Wind6.7 mph S
Humidity47%
Visibility—
Dew point32°
Wed, 1860° / 36°0Clear
60 °Clear

Jamestown, Wednesday, 18 November

Clear. High 60°, low 36°.

Pressure30.39 inHg
Wind9.1 mph S
Humidity32%
Visibility—
Dew point25°
Thu, 1962° / 38°0Overcast
62 °Overcast

Jamestown, Thursday, 19 November

Overcast. High 62°, low 38°.

Pressure30.27 inHg
Wind9.4 mph S
Humidity29%
Visibility—
Dew point24°
Fri, 2066° / 46°0Overcast
66 °Overcast

Jamestown, Friday, 20 November

Overcast. High 66°, low 46°.

Pressure30.15 inHg
Wind9.9 mph SW
Humidity37%
Visibility—
Dew point34°
Sat, 2161° / 46°0Partly cloudy
61 °Partly cloudy

Jamestown, Saturday, 21 November

Partly cloudy. High 61°, low 46°.

Pressure30.12 inHg
Wind6.8 mph NW
Humidity56%
Visibility—
Dew point43°
Sun, 2270° / 50°0Overcast
70 °Overcast

Jamestown, Sunday, 22 November

Overcast. High 70°, low 50°.

Pressure29.83 inHg
Wind18.8 mph SW
Humidity32%
Visibility—
Dew point34°
Mon, 2355° / 44°0.21Light rain
55 °Light rain

Jamestown, Monday, 23 November

Light rain. High 55°, low 44°.

Pressure30.00 inHg
Wind10.5 mph N
Humidity63%
Visibility—
Dew point37°
Tue, 2444° / 35°1.93Snow
44 °Snow

Jamestown, Tuesday, 24 November

Snow. High 44°, low 35°.

Pressure29.68 inHg
Wind21.6 mph N
Humidity92%
Visibility—
Dew point40°
Wed, 2538° / 29°0.07Snow
38 °Snow

Jamestown, Wednesday, 25 November

Snow. High 38°, low 29°.

Pressure30.15 inHg
Wind15.5 mph NW
Humidity67%
Visibility—
Dew point26°
Thu, 2639° / 27°0Overcast
39 °Overcast

Jamestown, Thursday, 26 November

Overcast. High 39°, low 27°.

Pressure30.53 inHg
Wind8.6 mph NW
Humidity48%
Visibility—
Dew point19°
Fri, 2738° / 28°0Overcast
38 °Overcast

Jamestown, Friday, 27 November

Overcast. High 38°, low 28°.

Pressure30.53 inHg
Wind5.7 mph NE
Humidity52%
Visibility—
Dew point21°

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.